p took 125ms [ 74.139845][ T4039] gfs2: fsid=syz:syz.0: jid=0: Done [ 74.141247][ T4189] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 74.154820][ T4189] syz-executor375 (4189): drop_caches: 2 [ 74.190844][ T4190] loop3: detected capacity change from 0 to 32768 [ 74.246152][ T4190] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 74.248510][ T4190] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 74.304797][ T4190] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 74.312079][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 74.313926][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 74.417458][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 103ms [ 74.419697][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 74.421152][ T4190] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 74.428605][ T4190] syz-executor375 (4190): drop_caches: 2 executing program [ 74.574004][ T4191] loop1: detected capacity change from 0 to 32768 [ 74.666354][ T4191] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 74.668613][ T4191] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 74.678552][ T4191] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 74.681622][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 74.683412][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 74.747145][ T1960] cfg80211: failed to load regulatory.db [ 74.785137][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 101ms [ 74.788647][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 74.790034][ T4191] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 74.798971][ T4191] syz-executor375 (4191): drop_caches: 2 [ 74.875773][ T4192] loop4: detected capacity change from 0 to 32768 [ 74.908462][ T4193] loop2: detected capacity change from 0 to 32768 [ 74.927187][ T4193] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 74.929224][ T4193] CPU: 1 PID: 4193 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 74.931437][ T4193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 74.933997][ T4193] Call trace: [ 74.934786][ T4193] dump_backtrace+0x0/0x43c [ 74.935941][ T4193] show_stack+0x2c/0x3c [ 74.937016][ T4193] __dump_stack+0x30/0x40 [ 74.938146][ T4193] dump_stack_lvl+0xf8/0x160 [ 74.939364][ T4193] dump_stack+0x1c/0x5c [ 74.940487][ T4193] sysfs_create_dir_ns+0x22c/0x24c [ 74.941906][ T4193] kobject_add_internal+0x590/0xc54 [ 74.943314][ T4193] kobject_init_and_add+0x118/0x17c [ 74.944725][ T4193] gfs2_sys_fs_add+0x1dc/0x3d8 [ 74.946005][ T4193] gfs2_fill_super+0xdac/0x19e0 [ 74.947323][ T4193] get_tree_bdev+0x358/0x544 [ 74.948504][ T4193] gfs2_get_tree+0x54/0x1b4 [ 74.949703][ T4193] vfs_get_tree+0x90/0x274 [ 74.950842][ T4193] do_new_mount+0x228/0x810 [ 74.952057][ T4193] path_mount+0x5b4/0x1000 [ 74.953185][ T4193] __arm64_sys_mount+0x514/0x5e4 [ 74.954503][ T4193] invoke_syscall+0x98/0x2b8 [ 74.955720][ T4193] el0_svc_common+0x138/0x258 [ 74.957005][ T4193] do_el0_svc+0x58/0x14c [ 74.958102][ T4193] el0_svc+0x78/0x1e0 [ 74.959146][ T4193] el0t_64_sync_handler+0xcc/0xe4 [ 74.960475][ T4193] el0t_64_sync+0x1a0/0x1a4 [ 74.993668][ T4192] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 75.005106][ T4192] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 75.016540][ T4192] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 75.023913][ T4039] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 75.025818][ T4039] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 75.115638][ T4193] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 75.119059][ T4193] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 75.124744][ T4039] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 98ms [ 75.134515][ T4039] gfs2: fsid=syz:syz.0: jid=0: Done [ 75.141009][ T4192] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 75.143447][ T4193] syz-executor375 (4193): drop_caches: 2 executing program [ 75.173823][ T4192] syz-executor375 (4192): drop_caches: 2 executing program executing program [ 75.470471][ T4194] loop0: detected capacity change from 0 to 32768 [ 75.496202][ T4194] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 75.505639][ T4194] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 75.519681][ T4194] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 75.539527][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 75.541278][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 75.607743][ T4195] loop3: detected capacity change from 0 to 32768 [ 75.657049][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 115ms [ 75.659089][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 75.660435][ T4194] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 75.668620][ T4194] syz-executor375 (4194): drop_caches: 2 [ 75.698259][ T4195] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 75.700376][ T4195] CPU: 0 PID: 4195 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 75.702687][ T4195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 75.705416][ T4195] Call trace: [ 75.706231][ T4195] dump_backtrace+0x0/0x43c [ 75.707455][ T4195] show_stack+0x2c/0x3c [ 75.708640][ T4195] __dump_stack+0x30/0x40 [ 75.709695][ T4195] dump_stack_lvl+0xf8/0x160 [ 75.710888][ T4195] dump_stack+0x1c/0x5c [ 75.711989][ T4195] sysfs_create_dir_ns+0x22c/0x24c [ 75.713311][ T4195] kobject_add_internal+0x590/0xc54 [ 75.714680][ T4195] kobject_init_and_add+0x118/0x17c [ 75.716068][ T4195] gfs2_sys_fs_add+0x1dc/0x3d8 [ 75.717296][ T4195] gfs2_fill_super+0xdac/0x19e0 [ 75.718592][ T4195] get_tree_bdev+0x358/0x544 [ 75.719766][ T4195] gfs2_get_tree+0x54/0x1b4 [ 75.721012][ T4195] vfs_get_tree+0x90/0x274 [ 75.722118][ T4195] do_new_mount+0x228/0x810 [ 75.723214][ T4195] path_mount+0x5b4/0x1000 [ 75.724485][ T4195] __arm64_sys_mount+0x514/0x5e4 [ 75.725746][ T4195] invoke_syscall+0x98/0x2b8 [ 75.726963][ T4195] el0_svc_common+0x138/0x258 [ 75.728182][ T4195] do_el0_svc+0x58/0x14c [ 75.729296][ T4195] el0_svc+0x78/0x1e0 [ 75.730314][ T4195] el0t_64_sync_handler+0xcc/0xe4 [ 75.731610][ T4195] el0t_64_sync+0x1a0/0x1a4 executing program [ 75.905762][ T4195] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 75.909209][ T4195] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 75.911904][ T4195] syz-executor375 (4195): drop_caches: 2 executing program [ 76.218887][ T4196] loop1: detected capacity change from 0 to 32768 [ 76.296957][ T4196] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 76.299280][ T4196] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 76.304626][ T4196] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 76.333428][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 76.335241][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 76.391321][ T4197] loop2: detected capacity change from 0 to 32768 [ 76.417240][ T4197] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 76.419151][ T4197] CPU: 0 PID: 4197 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 76.421200][ T4197] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 76.423663][ T4197] Call trace: [ 76.424496][ T4197] dump_backtrace+0x0/0x43c [ 76.425633][ T4197] show_stack+0x2c/0x3c [ 76.426653][ T4197] __dump_stack+0x30/0x40 [ 76.427691][ T4197] dump_stack_lvl+0xf8/0x160 [ 76.428867][ T4197] dump_stack+0x1c/0x5c [ 76.429931][ T4197] sysfs_create_dir_ns+0x22c/0x24c [ 76.431191][ T4197] kobject_add_internal+0x590/0xc54 [ 76.432484][ T4197] kobject_init_and_add+0x118/0x17c [ 76.433774][ T4197] gfs2_sys_fs_add+0x1dc/0x3d8 [ 76.434958][ T4197] gfs2_fill_super+0xdac/0x19e0 [ 76.436150][ T4197] get_tree_bdev+0x358/0x544 [ 76.437296][ T4197] gfs2_get_tree+0x54/0x1b4 [ 76.438378][ T4197] vfs_get_tree+0x90/0x274 [ 76.439483][ T4197] do_new_mount+0x228/0x810 [ 76.440619][ T4197] path_mount+0x5b4/0x1000 [ 76.441750][ T4197] __arm64_sys_mount+0x514/0x5e4 [ 76.443027][ T4197] invoke_syscall+0x98/0x2b8 [ 76.444168][ T4197] el0_svc_common+0x138/0x258 [ 76.445299][ T4197] do_el0_svc+0x58/0x14c [ 76.446332][ T4197] el0_svc+0x78/0x1e0 [ 76.447301][ T4197] el0t_64_sync_handler+0xcc/0xe4 [ 76.448490][ T4197] el0t_64_sync+0x1a0/0x1a4 [ 76.450382][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 115ms [ 76.452400][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 76.453781][ T4196] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 76.483786][ T4196] syz-executor375 (4196): drop_caches: 2 [ 76.495076][ T4198] loop4: detected capacity change from 0 to 32768 [ 76.499690][ T4197] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 76.503353][ T4197] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 76.506913][ T4197] syz-executor375 (4197): drop_caches: 2 executing program [ 76.537309][ T4199] loop0: detected capacity change from 0 to 32768 [ 76.575691][ T4198] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 76.585441][ T4198] CPU: 1 PID: 4198 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 76.587798][ T4198] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 76.590401][ T4198] Call trace: [ 76.591226][ T4198] dump_backtrace+0x0/0x43c [ 76.592429][ T4198] show_stack+0x2c/0x3c [ 76.593516][ T4198] __dump_stack+0x30/0x40 executing program [ 76.594604][ T4198] dump_stack_lvl+0xf8/0x160 [ 76.595770][ T4198] dump_stack+0x1c/0x5c [ 76.596873][ T4198] sysfs_create_dir_ns+0x22c/0x24c [ 76.598201][ T4198] kobject_add_internal+0x590/0xc54 [ 76.599552][ T4198] kobject_init_and_add+0x118/0x17c [ 76.600992][ T4198] gfs2_sys_fs_add+0x1dc/0x3d8 [ 76.602260][ T4198] gfs2_fill_super+0xdac/0x19e0 [ 76.603508][ T4198] get_tree_bdev+0x358/0x544 [ 76.604710][ T4198] gfs2_get_tree+0x54/0x1b4 [ 76.605896][ T4198] vfs_get_tree+0x90/0x274 [ 76.607063][ T4198] do_new_mount+0x228/0x810 [ 76.608188][ T4198] path_mount+0x5b4/0x1000 [ 76.609369][ T4198] __arm64_sys_mount+0x514/0x5e4 [ 76.610699][ T4198] invoke_syscall+0x98/0x2b8 [ 76.611941][ T4198] el0_svc_common+0x138/0x258 [ 76.613154][ T4198] do_el0_svc+0x58/0x14c [ 76.614271][ T4198] el0_svc+0x78/0x1e0 [ 76.615309][ T4198] el0t_64_sync_handler+0xcc/0xe4 [ 76.616563][ T4198] el0t_64_sync+0x1a0/0x1a4 [ 76.685664][ T4198] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 76.689191][ T4198] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 76.691917][ T4198] syz-executor375 (4198): drop_caches: 2 executing program [ 76.824140][ T4199] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 76.826557][ T4199] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 76.855716][ T4199] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 76.866313][ T4039] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 76.868011][ T4039] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 76.966359][ T4039] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 98ms [ 76.968945][ T4039] gfs2: fsid=syz:syz.0: jid=0: Done [ 76.970230][ T4199] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 76.985170][ T4199] syz-executor375 (4199): drop_caches: 2 [ 77.039049][ T4200] loop3: detected capacity change from 0 to 32768 executing program [ 77.137824][ T4200] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 77.140002][ T4200] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 77.144783][ T4200] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 77.148196][ T4039] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 77.149943][ T4039] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 77.263508][ T4039] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 113ms [ 77.266012][ T4039] gfs2: fsid=syz:syz.0: jid=0: Done [ 77.267406][ T4200] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 77.275165][ T4200] syz-executor375 (4200): drop_caches: 2 executing program [ 77.669365][ T4202] loop1: detected capacity change from 0 to 32768 [ 77.688913][ T4201] loop2: detected capacity change from 0 to 32768 [ 77.748211][ T4201] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 77.750369][ T4201] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 77.776630][ T4201] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 77.778586][ T4202] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 77.779732][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 77.780696][ T4202] CPU: 1 PID: 4202 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 77.782453][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 77.784623][ T4202] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 77.789092][ T4202] Call trace: [ 77.789932][ T4202] dump_backtrace+0x0/0x43c [ 77.791090][ T4202] show_stack+0x2c/0x3c [ 77.792254][ T4202] __dump_stack+0x30/0x40 [ 77.793419][ T4202] dump_stack_lvl+0xf8/0x160 [ 77.794634][ T4202] dump_stack+0x1c/0x5c [ 77.795752][ T4202] sysfs_create_dir_ns+0x22c/0x24c [ 77.797077][ T4202] kobject_add_internal+0x590/0xc54 [ 77.798433][ T4202] kobject_init_and_add+0x118/0x17c [ 77.799813][ T4202] gfs2_sys_fs_add+0x1dc/0x3d8 [ 77.801081][ T4202] gfs2_fill_super+0xdac/0x19e0 [ 77.802450][ T4202] get_tree_bdev+0x358/0x544 [ 77.803620][ T4202] gfs2_get_tree+0x54/0x1b4 [ 77.804747][ T4202] vfs_get_tree+0x90/0x274 [ 77.805964][ T4202] do_new_mount+0x228/0x810 [ 77.807111][ T4202] path_mount+0x5b4/0x1000 [ 77.808286][ T4202] __arm64_sys_mount+0x514/0x5e4 [ 77.809555][ T4202] invoke_syscall+0x98/0x2b8 [ 77.810768][ T4202] el0_svc_common+0x138/0x258 [ 77.811985][ T4202] do_el0_svc+0x58/0x14c [ 77.813089][ T4202] el0_svc+0x78/0x1e0 [ 77.814124][ T4202] el0t_64_sync_handler+0xcc/0xe4 [ 77.815450][ T4202] el0t_64_sync+0x1a0/0x1a4 [ 77.853960][ T4203] loop4: detected capacity change from 0 to 32768 [ 77.897179][ T4202] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 77.902674][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 120ms [ 77.904724][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 77.911267][ T4202] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 77.931448][ T4201] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 77.941241][ T4201] syz-executor375 (4201): drop_caches: 2 [ 78.009940][ T4204] syz-executor375 (4204): drop_caches: 2 executing program [ 78.071198][ T4203] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 78.073504][ T4203] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 78.090197][ T4203] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 78.116890][ T4039] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 78.118773][ T4039] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 78.172976][ T4202] syz-executor375 (4202): drop_caches: 2 executing program [ 78.234288][ T4039] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 115ms [ 78.236567][ T4039] gfs2: fsid=syz:syz.0: jid=0: Done [ 78.238048][ T4203] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 78.251863][ T4203] syz-executor375 (4203): drop_caches: 2 executing program [ 78.363669][ T4205] loop3: detected capacity change from 0 to 32768 [ 78.438157][ T4205] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 78.440445][ T4205] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 78.464779][ T4205] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 78.477821][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 78.479644][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 78.553866][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 74ms [ 78.562800][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 78.564380][ T4205] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 78.593969][ T4205] syz-executor375 (4205): drop_caches: 2 executing program [ 79.009742][ T4206] loop0: detected capacity change from 0 to 32768 [ 79.046427][ T4207] loop1: detected capacity change from 0 to 32768 [ 79.068092][ T4206] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 79.070449][ T4206] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 79.075368][ T4206] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 79.085137][ T4207] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 79.087224][ T4207] CPU: 0 PID: 4207 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 79.089587][ T4207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 79.092208][ T4207] Call trace: [ 79.093040][ T4207] dump_backtrace+0x0/0x43c [ 79.094190][ T4207] show_stack+0x2c/0x3c [ 79.095237][ T4207] __dump_stack+0x30/0x40 [ 79.096387][ T4207] dump_stack_lvl+0xf8/0x160 [ 79.097643][ T4207] dump_stack+0x1c/0x5c [ 79.098752][ T4207] sysfs_create_dir_ns+0x22c/0x24c [ 79.100111][ T4207] kobject_add_internal+0x590/0xc54 [ 79.101440][ T4207] kobject_init_and_add+0x118/0x17c [ 79.102802][ T4207] gfs2_sys_fs_add+0x1dc/0x3d8 [ 79.104082][ T4207] gfs2_fill_super+0xdac/0x19e0 [ 79.105373][ T4207] get_tree_bdev+0x358/0x544 [ 79.106583][ T4207] gfs2_get_tree+0x54/0x1b4 [ 79.107745][ T4207] vfs_get_tree+0x90/0x274 [ 79.108980][ T4207] do_new_mount+0x228/0x810 [ 79.110216][ T4207] path_mount+0x5b4/0x1000 [ 79.111375][ T4207] __arm64_sys_mount+0x514/0x5e4 [ 79.112660][ T4207] invoke_syscall+0x98/0x2b8 [ 79.113858][ T4207] el0_svc_common+0x138/0x258 [ 79.115144][ T4207] do_el0_svc+0x58/0x14c [ 79.116292][ T4207] el0_svc+0x78/0x1e0 [ 79.117360][ T4207] el0t_64_sync_handler+0xcc/0xe4 [ 79.118684][ T4207] el0t_64_sync+0x1a0/0x1a4 [ 79.126655][ T4039] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 79.128460][ T4039] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 79.193300][ T4207] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 79.203518][ T4207] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 79.211257][ T4039] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 82ms [ 79.213352][ T4039] gfs2: fsid=syz:syz.0: jid=0: Done [ 79.214763][ T4206] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 79.228341][ T4206] syz-executor375 (4206): drop_caches: 2 [ 79.231659][ T4207] syz-executor375 (4207): drop_caches: 2 executing program executing program [ 79.345994][ T4208] loop2: detected capacity change from 0 to 32768 [ 79.422906][ T4208] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 79.425204][ T4208] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 79.456867][ T4208] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 79.460181][ T4039] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 79.461997][ T4039] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 79.540193][ T4211] loop3: detected capacity change from 0 to 32768 [ 79.583176][ T4039] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 121ms [ 79.585353][ T4039] gfs2: fsid=syz:syz.0: jid=0: Done [ 79.602818][ T4208] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 79.611214][ T4211] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 79.612015][ T4209] loop4: detected capacity change from 0 to 32768 [ 79.613283][ T4211] CPU: 1 PID: 4211 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 79.613299][ T4211] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 79.613306][ T4211] Call trace: [ 79.613309][ T4211] dump_backtrace+0x0/0x43c [ 79.613326][ T4211] show_stack+0x2c/0x3c [ 79.622952][ T4211] __dump_stack+0x30/0x40 [ 79.624126][ T4211] dump_stack_lvl+0xf8/0x160 [ 79.625368][ T4211] dump_stack+0x1c/0x5c [ 79.626460][ T4211] sysfs_create_dir_ns+0x22c/0x24c [ 79.627811][ T4211] kobject_add_internal+0x590/0xc54 [ 79.629197][ T4211] kobject_init_and_add+0x118/0x17c [ 79.630587][ T4211] gfs2_sys_fs_add+0x1dc/0x3d8 [ 79.631842][ T4211] gfs2_fill_super+0xdac/0x19e0 [ 79.633131][ T4211] get_tree_bdev+0x358/0x544 [ 79.634307][ T4211] gfs2_get_tree+0x54/0x1b4 [ 79.635510][ T4211] vfs_get_tree+0x90/0x274 [ 79.636663][ T4211] do_new_mount+0x228/0x810 [ 79.637833][ T4211] path_mount+0x5b4/0x1000 [ 79.639066][ T4211] __arm64_sys_mount+0x514/0x5e4 [ 79.640366][ T4211] invoke_syscall+0x98/0x2b8 [ 79.641610][ T4211] el0_svc_common+0x138/0x258 [ 79.642821][ T4211] do_el0_svc+0x58/0x14c [ 79.643908][ T4211] el0_svc+0x78/0x1e0 [ 79.644955][ T4211] el0t_64_sync_handler+0xcc/0xe4 [ 79.646277][ T4211] el0t_64_sync+0x1a0/0x1a4 [ 79.653972][ T4208] syz-executor375 (4208): drop_caches: 2 [ 79.699245][ T4211] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 79.724459][ T4211] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 79.747877][ T4209] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 79.749816][ T4209] CPU: 0 PID: 4209 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 79.752138][ T4209] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 79.754775][ T4209] Call trace: [ 79.755644][ T4209] dump_backtrace+0x0/0x43c [ 79.756836][ T4209] show_stack+0x2c/0x3c [ 79.758001][ T4209] __dump_stack+0x30/0x40 [ 79.759134][ T4209] dump_stack_lvl+0xf8/0x160 [ 79.760332][ T4209] dump_stack+0x1c/0x5c [ 79.761425][ T4209] sysfs_create_dir_ns+0x22c/0x24c [ 79.762784][ T4209] kobject_add_internal+0x590/0xc54 [ 79.764159][ T4209] kobject_init_and_add+0x118/0x17c [ 79.765495][ T4209] gfs2_sys_fs_add+0x1dc/0x3d8 [ 79.766781][ T4209] gfs2_fill_super+0xdac/0x19e0 [ 79.768122][ T4209] get_tree_bdev+0x358/0x544 [ 79.769339][ T4209] gfs2_get_tree+0x54/0x1b4 [ 79.770546][ T4209] vfs_get_tree+0x90/0x274 [ 79.771747][ T4209] do_new_mount+0x228/0x810 [ 79.773020][ T4209] path_mount+0x5b4/0x1000 [ 79.774183][ T4209] __arm64_sys_mount+0x514/0x5e4 [ 79.775479][ T4209] invoke_syscall+0x98/0x2b8 [ 79.776748][ T4209] el0_svc_common+0x138/0x258 [ 79.777994][ T4209] do_el0_svc+0x58/0x14c [ 79.779099][ T4209] el0_svc+0x78/0x1e0 [ 79.780148][ T4209] el0t_64_sync_handler+0xcc/0xe4 [ 79.781499][ T4209] el0t_64_sync+0x1a0/0x1a4 executing program [ 79.795678][ T4209] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 79.799157][ T4209] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 79.836606][ T4209] syz-executor375 (4209): drop_caches: 2 executing program [ 79.900240][ T4211] syz-executor375 (4211): drop_caches: 2 executing program [ 80.060256][ T4212] loop1: detected capacity change from 0 to 32768 [ 80.144976][ T4213] loop0: detected capacity change from 0 to 32768 [ 80.162410][ T4212] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 80.164665][ T4212] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 80.181965][ T4213] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 80.183924][ T4213] CPU: 1 PID: 4213 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 80.186198][ T4213] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 80.188883][ T4213] Call trace: [ 80.189704][ T4213] dump_backtrace+0x0/0x43c [ 80.190906][ T4213] show_stack+0x2c/0x3c [ 80.192039][ T4213] __dump_stack+0x30/0x40 [ 80.193147][ T4213] dump_stack_lvl+0xf8/0x160 [ 80.194342][ T4213] dump_stack+0x1c/0x5c [ 80.195417][ T4213] sysfs_create_dir_ns+0x22c/0x24c [ 80.196772][ T4213] kobject_add_internal+0x590/0xc54 [ 80.198141][ T4213] kobject_init_and_add+0x118/0x17c [ 80.199519][ T4213] gfs2_sys_fs_add+0x1dc/0x3d8 [ 80.200742][ T4213] gfs2_fill_super+0xdac/0x19e0 [ 80.202068][ T4213] get_tree_bdev+0x358/0x544 [ 80.203276][ T4213] gfs2_get_tree+0x54/0x1b4 [ 80.204488][ T4213] vfs_get_tree+0x90/0x274 [ 80.205611][ T4213] do_new_mount+0x228/0x810 [ 80.206772][ T4213] path_mount+0x5b4/0x1000 [ 80.207911][ T4213] __arm64_sys_mount+0x514/0x5e4 [ 80.209209][ T4213] invoke_syscall+0x98/0x2b8 [ 80.210462][ T4213] el0_svc_common+0x138/0x258 [ 80.211693][ T4213] do_el0_svc+0x58/0x14c [ 80.212875][ T4213] el0_svc+0x78/0x1e0 [ 80.213900][ T4213] el0t_64_sync_handler+0xcc/0xe4 [ 80.215173][ T4213] el0t_64_sync+0x1a0/0x1a4 [ 80.219492][ T4212] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 80.222710][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 80.224443][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 80.293750][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 69ms [ 80.296168][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 80.297603][ T4212] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 80.305859][ T4212] syz-executor375 (4212): drop_caches: 2 [ 80.315842][ T4213] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 80.319219][ T4213] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 80.540359][ T4213] syz-executor375 (4213): drop_caches: 2 executing program [ 80.644702][ T4214] loop2: detected capacity change from 0 to 32768 executing program [ 80.685252][ T4214] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 80.688148][ T4214] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 80.708715][ T4214] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 80.711840][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 80.713638][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 80.804725][ T4215] loop4: detected capacity change from 0 to 32768 [ 80.814874][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 101ms [ 80.827365][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 80.828834][ T4214] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 80.837720][ T4214] syz-executor375 (4214): drop_caches: 2 [ 80.893526][ T4216] loop3: detected capacity change from 0 to 32768 executing program [ 80.922621][ T4215] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 80.924843][ T4215] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 80.939845][ T4215] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 80.940144][ T4216] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 80.943792][ T4216] CPU: 0 PID: 4216 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 80.946052][ T4216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 80.948703][ T4216] Call trace: [ 80.949547][ T4216] dump_backtrace+0x0/0x43c [ 80.950730][ T4216] show_stack+0x2c/0x3c [ 80.951881][ T4216] __dump_stack+0x30/0x40 [ 80.953006][ T4216] dump_stack_lvl+0xf8/0x160 [ 80.954185][ T4216] dump_stack+0x1c/0x5c [ 80.955266][ T4216] sysfs_create_dir_ns+0x22c/0x24c [ 80.956595][ T4216] kobject_add_internal+0x590/0xc54 [ 80.957432][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 80.957998][ T4216] kobject_init_and_add+0x118/0x17c [ 80.959727][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 80.961067][ T4216] gfs2_sys_fs_add+0x1dc/0x3d8 [ 80.964020][ T4216] gfs2_fill_super+0xdac/0x19e0 [ 80.965297][ T4216] get_tree_bdev+0x358/0x544 [ 80.966486][ T4216] gfs2_get_tree+0x54/0x1b4 [ 80.967709][ T4216] vfs_get_tree+0x90/0x274 [ 80.968956][ T4216] do_new_mount+0x228/0x810 [ 80.970148][ T4216] path_mount+0x5b4/0x1000 [ 80.971285][ T4216] __arm64_sys_mount+0x514/0x5e4 [ 80.972634][ T4216] invoke_syscall+0x98/0x2b8 [ 80.973824][ T4216] el0_svc_common+0x138/0x258 [ 80.975038][ T4216] do_el0_svc+0x58/0x14c [ 80.976174][ T4216] el0_svc+0x78/0x1e0 [ 80.977205][ T4216] el0t_64_sync_handler+0xcc/0xe4 [ 80.978502][ T4216] el0t_64_sync+0x1a0/0x1a4 [ 81.059482][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 99ms [ 81.061643][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 81.074553][ T4215] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 81.083879][ T4215] syz-executor375 (4215): drop_caches: 2 [ 81.164614][ T4216] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 81.174729][ T4216] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 81.195450][ T4216] syz-executor375 (4216): drop_caches: 2 executing program [ 81.314599][ T4217] loop0: detected capacity change from 0 to 32768 executing program [ 81.408135][ T4217] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 81.410272][ T4217] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 81.452637][ T4217] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 81.455971][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 81.457881][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 81.534735][ T4218] loop1: detected capacity change from 0 to 32768 [ 81.569191][ T4218] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 81.571211][ T4218] CPU: 1 PID: 4218 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 81.573424][ T4218] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 81.576040][ T4218] Call trace: [ 81.576861][ T4218] dump_backtrace+0x0/0x43c [ 81.578016][ T4218] show_stack+0x2c/0x3c [ 81.579106][ T4218] __dump_stack+0x30/0x40 [ 81.580241][ T4218] dump_stack_lvl+0xf8/0x160 [ 81.581436][ T4218] dump_stack+0x1c/0x5c [ 81.582493][ T4218] sysfs_create_dir_ns+0x22c/0x24c [ 81.583821][ T4218] kobject_add_internal+0x590/0xc54 [ 81.585215][ T4218] kobject_init_and_add+0x118/0x17c [ 81.586578][ T4218] gfs2_sys_fs_add+0x1dc/0x3d8 [ 81.587833][ T4218] gfs2_fill_super+0xdac/0x19e0 [ 81.589045][ T4218] get_tree_bdev+0x358/0x544 [ 81.590236][ T4218] gfs2_get_tree+0x54/0x1b4 [ 81.591377][ T4218] vfs_get_tree+0x90/0x274 [ 81.592548][ T4218] do_new_mount+0x228/0x810 [ 81.593732][ T4218] path_mount+0x5b4/0x1000 [ 81.594922][ T4218] __arm64_sys_mount+0x514/0x5e4 [ 81.596166][ T4218] invoke_syscall+0x98/0x2b8 [ 81.597307][ T4218] el0_svc_common+0x138/0x258 [ 81.598481][ T4218] do_el0_svc+0x58/0x14c [ 81.599623][ T4218] el0_svc+0x78/0x1e0 [ 81.600682][ T4218] el0t_64_sync_handler+0xcc/0xe4 [ 81.602026][ T4218] el0t_64_sync+0x1a0/0x1a4 [ 81.616988][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 159ms [ 81.619152][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 81.620497][ T4217] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 81.629315][ T4217] syz-executor375 (4217): drop_caches: 2 [ 81.654846][ T4218] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 81.658263][ T4218] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 81.674122][ T4218] syz-executor375 (4218): drop_caches: 2 executing program executing program [ 81.965032][ T4219] loop2: detected capacity change from 0 to 32768 [ 82.030931][ T4219] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 82.033185][ T4219] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 82.039012][ T4219] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 82.052383][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 82.054249][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 82.139469][ T4220] loop3: detected capacity change from 0 to 32768 [ 82.160859][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 106ms [ 82.163027][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 82.164421][ T4219] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 82.173268][ T4219] syz-executor375 (4219): drop_caches: 2 [ 82.217237][ T4221] loop4: detected capacity change from 0 to 32768 [ 82.237683][ T4220] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 82.239630][ T4220] CPU: 0 PID: 4220 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 82.241917][ T4220] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 82.244485][ T4220] Call trace: [ 82.245376][ T4220] dump_backtrace+0x0/0x43c [ 82.246570][ T4220] show_stack+0x2c/0x3c [ 82.247651][ T4220] __dump_stack+0x30/0x40 [ 82.248791][ T4220] dump_stack_lvl+0xf8/0x160 [ 82.249984][ T4220] dump_stack+0x1c/0x5c [ 82.251057][ T4220] sysfs_create_dir_ns+0x22c/0x24c [ 82.252457][ T4220] kobject_add_internal+0x590/0xc54 [ 82.253806][ T4220] kobject_init_and_add+0x118/0x17c [ 82.255199][ T4220] gfs2_sys_fs_add+0x1dc/0x3d8 [ 82.256436][ T4220] gfs2_fill_super+0xdac/0x19e0 [ 82.257778][ T4220] get_tree_bdev+0x358/0x544 [ 82.259012][ T4220] gfs2_get_tree+0x54/0x1b4 [ 82.260226][ T4220] vfs_get_tree+0x90/0x274 [ 82.261364][ T4220] do_new_mount+0x228/0x810 [ 82.262526][ T4220] path_mount+0x5b4/0x1000 [ 82.263691][ T4220] __arm64_sys_mount+0x514/0x5e4 [ 82.264993][ T4220] invoke_syscall+0x98/0x2b8 [ 82.266185][ T4220] el0_svc_common+0x138/0x258 [ 82.267418][ T4220] do_el0_svc+0x58/0x14c [ 82.268531][ T4220] el0_svc+0x78/0x1e0 [ 82.269559][ T4220] el0t_64_sync_handler+0xcc/0xe4 [ 82.270902][ T4220] el0t_64_sync+0x1a0/0x1a4 executing program [ 82.346156][ T4221] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 82.346703][ T4220] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 82.348384][ T4221] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 82.366954][ T4220] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 82.381548][ T4221] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 82.392074][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 82.393890][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 82.466202][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 72ms [ 82.468259][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 82.469610][ T4221] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 82.477998][ T4221] syz-executor375 (4221): drop_caches: 2 executing program [ 82.638905][ T4225] loop1: detected capacity change from 0 to 32768 [ 82.657609][ T4225] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 82.659751][ T4225] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 82.693814][ T4225] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 82.697345][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 82.699103][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 82.737606][ T4220] syz-executor375 (4220): drop_caches: 2 executing program [ 82.792099][ T4226] loop0: detected capacity change from 0 to 32768 [ 82.801584][ T4226] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 82.803911][ T4226] CPU: 1 PID: 4226 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 82.806204][ T4226] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 82.808875][ T4226] Call trace: [ 82.809735][ T4226] dump_backtrace+0x0/0x43c [ 82.810938][ T4226] show_stack+0x2c/0x3c [ 82.812006][ T4226] __dump_stack+0x30/0x40 [ 82.813128][ T4226] dump_stack_lvl+0xf8/0x160 [ 82.814318][ T4226] dump_stack+0x1c/0x5c [ 82.815381][ T4226] sysfs_create_dir_ns+0x22c/0x24c [ 82.816708][ T4226] kobject_add_internal+0x590/0xc54 [ 82.818089][ T4226] kobject_init_and_add+0x118/0x17c [ 82.819419][ T4226] gfs2_sys_fs_add+0x1dc/0x3d8 [ 82.820645][ T4226] gfs2_fill_super+0xdac/0x19e0 [ 82.821906][ T4226] get_tree_bdev+0x358/0x544 [ 82.823172][ T4226] gfs2_get_tree+0x54/0x1b4 [ 82.824373][ T4226] vfs_get_tree+0x90/0x274 [ 82.825525][ T4226] do_new_mount+0x228/0x810 [ 82.826725][ T4226] path_mount+0x5b4/0x1000 [ 82.827878][ T4226] __arm64_sys_mount+0x514/0x5e4 [ 82.829180][ T4226] invoke_syscall+0x98/0x2b8 [ 82.830393][ T4226] el0_svc_common+0x138/0x258 [ 82.831597][ T4226] do_el0_svc+0x58/0x14c [ 82.832752][ T4226] el0_svc+0x78/0x1e0 [ 82.833809][ T4226] el0t_64_sync_handler+0xcc/0xe4 [ 82.835115][ T4226] el0t_64_sync+0x1a0/0x1a4 [ 82.837002][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 137ms [ 82.839068][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 82.840490][ T4225] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 82.855326][ T4225] syz-executor375 (4225): drop_caches: 2 executing program [ 82.971073][ T4226] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 82.974715][ T4226] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 82.978192][ T4226] syz-executor375 (4226): drop_caches: 2 executing program [ 83.090040][ T4227] loop2: detected capacity change from 0 to 32768 [ 83.187864][ T4227] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 83.190219][ T4227] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 83.210198][ T4227] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 83.223374][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 83.225242][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 83.351535][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 126ms [ 83.353733][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 83.355144][ T4227] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 83.368744][ T4227] syz-executor375 (4227): drop_caches: 2 executing program [ 83.612556][ T4229] loop4: detected capacity change from 0 to 32768 [ 83.649890][ T4229] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 83.652168][ T4229] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 83.675819][ T4229] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 83.679153][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 83.680794][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 83.732959][ T4230] loop3: detected capacity change from 0 to 32768 [ 83.777504][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 96ms [ 83.789943][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 83.791458][ T4229] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 83.808513][ T4229] syz-executor375 (4229): drop_caches: 2 [ 83.832275][ T4231] loop1: detected capacity change from 0 to 32768 [ 83.837275][ T4230] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 83.839203][ T4230] CPU: 0 PID: 4230 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 83.841556][ T4230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 83.844189][ T4230] Call trace: [ 83.845060][ T4230] dump_backtrace+0x0/0x43c [ 83.845771][ T4231] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 83.846234][ T4230] show_stack+0x2c/0x3c [ 83.849028][ T4230] __dump_stack+0x30/0x40 [ 83.850162][ T4230] dump_stack_lvl+0xf8/0x160 [ 83.851373][ T4230] dump_stack+0x1c/0x5c [ 83.852416][ T4230] sysfs_create_dir_ns+0x22c/0x24c [ 83.853759][ T4230] kobject_add_internal+0x590/0xc54 [ 83.855184][ T4230] kobject_init_and_add+0x118/0x17c [ 83.856549][ T4230] gfs2_sys_fs_add+0x1dc/0x3d8 [ 83.857791][ T4230] gfs2_fill_super+0xdac/0x19e0 [ 83.859051][ T4230] get_tree_bdev+0x358/0x544 [ 83.860267][ T4230] gfs2_get_tree+0x54/0x1b4 [ 83.861444][ T4230] vfs_get_tree+0x90/0x274 [ 83.862577][ T4230] do_new_mount+0x228/0x810 [ 83.863736][ T4230] path_mount+0x5b4/0x1000 [ 83.864898][ T4230] __arm64_sys_mount+0x514/0x5e4 [ 83.866254][ T4230] invoke_syscall+0x98/0x2b8 [ 83.867513][ T4230] el0_svc_common+0x138/0x258 [ 83.868795][ T4230] do_el0_svc+0x58/0x14c [ 83.869868][ T4230] el0_svc+0x78/0x1e0 [ 83.870937][ T4230] el0t_64_sync_handler+0xcc/0xe4 [ 83.872208][ T4230] el0t_64_sync+0x1a0/0x1a4 [ 83.873374][ T4231] CPU: 1 PID: 4231 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 83.875596][ T4231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 83.878075][ T4231] Call trace: [ 83.878886][ T4231] dump_backtrace+0x0/0x43c [ 83.880011][ T4231] show_stack+0x2c/0x3c [ 83.881013][ T4231] __dump_stack+0x30/0x40 [ 83.882108][ T4231] dump_stack_lvl+0xf8/0x160 [ 83.883263][ T4231] dump_stack+0x1c/0x5c [ 83.884241][ T4231] sysfs_create_dir_ns+0x22c/0x24c [ 83.885517][ T4231] kobject_add_internal+0x590/0xc54 [ 83.886842][ T4231] kobject_init_and_add+0x118/0x17c [ 83.888094][ T4231] gfs2_sys_fs_add+0x1dc/0x3d8 [ 83.889213][ T4231] gfs2_fill_super+0xdac/0x19e0 [ 83.890599][ T4231] get_tree_bdev+0x358/0x544 [ 83.891774][ T4231] gfs2_get_tree+0x54/0x1b4 [ 83.892881][ T4231] vfs_get_tree+0x90/0x274 [ 83.893988][ T4231] do_new_mount+0x228/0x810 [ 83.895057][ T4231] path_mount+0x5b4/0x1000 [ 83.896124][ T4231] __arm64_sys_mount+0x514/0x5e4 [ 83.897424][ T4231] invoke_syscall+0x98/0x2b8 [ 83.898675][ T4231] el0_svc_common+0x138/0x258 [ 83.899921][ T4231] do_el0_svc+0x58/0x14c [ 83.901053][ T4231] el0_svc+0x78/0x1e0 [ 83.902169][ T4231] el0t_64_sync_handler+0xcc/0xe4 [ 83.903510][ T4231] el0t_64_sync+0x1a0/0x1a4 [ 83.915653][ T4230] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 83.919216][ T4230] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 83.962671][ T4232] loop0: detected capacity change from 0 to 32768 [ 83.964840][ T4231] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 83.978505][ T4231] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 83.983763][ T4230] syz-executor375 (4230): drop_caches: 2 [ 84.007794][ T4232] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 84.010041][ T4232] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 84.018607][ T4232] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms executing program [ 84.038395][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 84.040122][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 84.142561][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 102ms [ 84.144684][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 84.152448][ T4232] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 84.168029][ T4232] syz-executor375 (4232): drop_caches: 2 [ 84.244602][ T4231] syz-executor375 (4231): drop_caches: 2 executing program executing program [ 84.562206][ T4233] loop2: detected capacity change from 0 to 32768 [ 84.678067][ T4233] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 84.680423][ T4233] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 84.698058][ T4233] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 84.717249][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 84.719210][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 84.832956][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 113ms [ 84.835138][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 84.865596][ T4233] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 84.873746][ T4233] syz-executor375 (4233): drop_caches: 2 [ 84.945988][ T4235] loop3: detected capacity change from 0 to 32768 [ 85.018259][ T4235] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 85.020420][ T4235] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... executing program [ 85.032948][ T4235] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 85.072122][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 85.074130][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 85.121562][ T4237] loop1: detected capacity change from 0 to 32768 [ 85.127673][ T4237] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 85.129654][ T4237] CPU: 0 PID: 4237 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 85.131911][ T4237] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 85.134429][ T4237] Call trace: [ 85.135279][ T4237] dump_backtrace+0x0/0x43c [ 85.136510][ T4237] show_stack+0x2c/0x3c [ 85.137593][ T4237] __dump_stack+0x30/0x40 [ 85.138745][ T4237] dump_stack_lvl+0xf8/0x160 [ 85.139952][ T4237] dump_stack+0x1c/0x5c [ 85.141043][ T4237] sysfs_create_dir_ns+0x22c/0x24c [ 85.142353][ T4237] kobject_add_internal+0x590/0xc54 [ 85.143696][ T4237] kobject_init_and_add+0x118/0x17c [ 85.145042][ T4237] gfs2_sys_fs_add+0x1dc/0x3d8 [ 85.146252][ T4237] gfs2_fill_super+0xdac/0x19e0 [ 85.147517][ T4237] get_tree_bdev+0x358/0x544 [ 85.148734][ T4237] gfs2_get_tree+0x54/0x1b4 [ 85.149862][ T4237] vfs_get_tree+0x90/0x274 [ 85.151024][ T4237] do_new_mount+0x228/0x810 [ 85.152186][ T4237] path_mount+0x5b4/0x1000 [ 85.153362][ T4237] __arm64_sys_mount+0x514/0x5e4 [ 85.154628][ T4237] invoke_syscall+0x98/0x2b8 [ 85.155891][ T4237] el0_svc_common+0x138/0x258 [ 85.157093][ T4237] do_el0_svc+0x58/0x14c [ 85.158231][ T4237] el0_svc+0x78/0x1e0 [ 85.159265][ T4237] el0t_64_sync_handler+0xcc/0xe4 [ 85.160574][ T4237] el0t_64_sync+0x1a0/0x1a4 [ 85.175737][ T4236] loop4: detected capacity change from 0 to 32768 [ 85.182480][ T4236] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 85.184921][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 110ms [ 85.191160][ T4236] CPU: 0 PID: 4236 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 85.193437][ T4236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 85.196185][ T4236] Call trace: [ 85.197056][ T4236] dump_backtrace+0x0/0x43c [ 85.198244][ T4236] show_stack+0x2c/0x3c [ 85.199333][ T4236] __dump_stack+0x30/0x40 [ 85.200456][ T4236] dump_stack_lvl+0xf8/0x160 [ 85.201700][ T4236] dump_stack+0x1c/0x5c [ 85.202802][ T4236] sysfs_create_dir_ns+0x22c/0x24c [ 85.204155][ T4236] kobject_add_internal+0x590/0xc54 [ 85.205548][ T4236] kobject_init_and_add+0x118/0x17c [ 85.206900][ T4236] gfs2_sys_fs_add+0x1dc/0x3d8 [ 85.208158][ T4236] gfs2_fill_super+0xdac/0x19e0 [ 85.209399][ T4236] get_tree_bdev+0x358/0x544 [ 85.210556][ T4236] gfs2_get_tree+0x54/0x1b4 [ 85.211686][ T4236] vfs_get_tree+0x90/0x274 [ 85.212798][ T4236] do_new_mount+0x228/0x810 [ 85.213962][ T4236] path_mount+0x5b4/0x1000 [ 85.215122][ T4236] __arm64_sys_mount+0x514/0x5e4 [ 85.216387][ T4236] invoke_syscall+0x98/0x2b8 [ 85.217563][ T4236] el0_svc_common+0x138/0x258 [ 85.218790][ T4236] do_el0_svc+0x58/0x14c [ 85.219890][ T4236] el0_svc+0x78/0x1e0 [ 85.220915][ T4236] el0t_64_sync_handler+0xcc/0xe4 [ 85.222228][ T4236] el0t_64_sync+0x1a0/0x1a4 [ 85.229957][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 85.231359][ T4235] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 85.241209][ T4235] syz-executor375 (4235): drop_caches: 2 [ 85.263123][ T4237] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 85.271308][ T4237] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 85.274716][ T4236] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 85.279468][ T4237] syz-executor375 (4237): drop_caches: 2 [ 85.284464][ T4236] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 85.298282][ T4236] syz-executor375 (4236): drop_caches: 2 executing program executing program [ 85.361971][ T4238] loop0: detected capacity change from 0 to 32768 executing program [ 85.423789][ T4238] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 85.429052][ T4238] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 85.441099][ T4238] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 85.456260][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 85.458162][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 85.566389][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 108ms [ 85.577222][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 85.585589][ T4238] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 85.610845][ T4238] syz-executor375 (4238): drop_caches: 2 executing program [ 86.081353][ T4243] loop3: detected capacity change from 0 to 32768 [ 86.120320][ T4240] loop2: detected capacity change from 0 to 32768 [ 86.137871][ T4242] loop4: detected capacity change from 0 to 32768 [ 86.147693][ T4243] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 86.149968][ T4243] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 86.165257][ T4243] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 86.181815][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 86.183623][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 86.206095][ T4241] loop1: detected capacity change from 0 to 32768 [ 86.227306][ T4240] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 86.229632][ T4240] CPU: 1 PID: 4240 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 86.232173][ T4240] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 86.234977][ T4240] Call trace: [ 86.235888][ T4240] dump_backtrace+0x0/0x43c [ 86.237214][ T4240] show_stack+0x2c/0x3c [ 86.238388][ T4240] __dump_stack+0x30/0x40 [ 86.239675][ T4240] dump_stack_lvl+0xf8/0x160 [ 86.240983][ T4240] dump_stack+0x1c/0x5c [ 86.242174][ T4240] sysfs_create_dir_ns+0x22c/0x24c [ 86.243612][ T4240] kobject_add_internal+0x590/0xc54 [ 86.245090][ T4240] kobject_init_and_add+0x118/0x17c [ 86.246528][ T4240] gfs2_sys_fs_add+0x1dc/0x3d8 [ 86.247857][ T4240] gfs2_fill_super+0xdac/0x19e0 [ 86.249288][ T4240] get_tree_bdev+0x358/0x544 [ 86.250647][ T4240] gfs2_get_tree+0x54/0x1b4 [ 86.251907][ T4240] vfs_get_tree+0x90/0x274 [ 86.253148][ T4240] do_new_mount+0x228/0x810 [ 86.254479][ T4240] path_mount+0x5b4/0x1000 [ 86.255797][ T4240] __arm64_sys_mount+0x514/0x5e4 [ 86.257314][ T4240] invoke_syscall+0x98/0x2b8 [ 86.258595][ T4240] el0_svc_common+0x138/0x258 [ 86.259921][ T4240] do_el0_svc+0x58/0x14c [ 86.261120][ T4240] el0_svc+0x78/0x1e0 [ 86.262209][ T4240] el0t_64_sync_handler+0xcc/0xe4 [ 86.263622][ T4240] el0t_64_sync+0x1a0/0x1a4 [ 86.269640][ T4242] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 86.271804][ T4242] CPU: 1 PID: 4242 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 86.274248][ T4242] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 86.276663][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 93ms [ 86.277104][ T4242] Call trace: [ 86.279196][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 86.279957][ T4242] dump_backtrace+0x0/0x43c [ 86.281294][ T4243] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 86.282637][ T4242] show_stack+0x2c/0x3c [ 86.285692][ T4242] __dump_stack+0x30/0x40 [ 86.286978][ T4242] dump_stack_lvl+0xf8/0x160 [ 86.288280][ T4242] dump_stack+0x1c/0x5c [ 86.289441][ T4242] sysfs_create_dir_ns+0x22c/0x24c [ 86.290937][ T4242] kobject_add_internal+0x590/0xc54 [ 86.292433][ T4242] kobject_init_and_add+0x118/0x17c [ 86.293977][ T4242] gfs2_sys_fs_add+0x1dc/0x3d8 [ 86.295376][ T4242] gfs2_fill_super+0xdac/0x19e0 [ 86.296759][ T4242] get_tree_bdev+0x358/0x544 [ 86.298121][ T4242] gfs2_get_tree+0x54/0x1b4 [ 86.299418][ T4242] vfs_get_tree+0x90/0x274 [ 86.300347][ T4243] syz-executor375 (4243): drop_caches: 2 [ 86.300717][ T4242] do_new_mount+0x228/0x810 [ 86.303518][ T4242] path_mount+0x5b4/0x1000 [ 86.304783][ T4242] __arm64_sys_mount+0x514/0x5e4 [ 86.306225][ T4242] invoke_syscall+0x98/0x2b8 [ 86.307560][ T4242] el0_svc_common+0x138/0x258 [ 86.308958][ T4242] do_el0_svc+0x58/0x14c [ 86.310190][ T4242] el0_svc+0x78/0x1e0 [ 86.311361][ T4242] el0t_64_sync_handler+0xcc/0xe4 [ 86.312869][ T4242] el0t_64_sync+0x1a0/0x1a4 [ 86.314471][ T4241] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 86.319707][ T4241] CPU: 1 PID: 4241 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 86.322173][ T4241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 86.325012][ T4241] Call trace: [ 86.325926][ T4241] dump_backtrace+0x0/0x43c [ 86.327201][ T4241] show_stack+0x2c/0x3c [ 86.328371][ T4241] __dump_stack+0x30/0x40 [ 86.329547][ T4241] dump_stack_lvl+0xf8/0x160 [ 86.330829][ T4241] dump_stack+0x1c/0x5c [ 86.331996][ T4241] sysfs_create_dir_ns+0x22c/0x24c [ 86.333428][ T4241] kobject_add_internal+0x590/0xc54 [ 86.334920][ T4241] kobject_init_and_add+0x118/0x17c [ 86.336384][ T4241] gfs2_sys_fs_add+0x1dc/0x3d8 [ 86.337772][ T4241] gfs2_fill_super+0xdac/0x19e0 [ 86.339113][ T4241] get_tree_bdev+0x358/0x544 [ 86.340348][ T4241] gfs2_get_tree+0x54/0x1b4 [ 86.341570][ T4241] vfs_get_tree+0x90/0x274 [ 86.342819][ T4241] do_new_mount+0x228/0x810 [ 86.344088][ T4241] path_mount+0x5b4/0x1000 [ 86.345318][ T4241] __arm64_sys_mount+0x514/0x5e4 [ 86.346696][ T4241] invoke_syscall+0x98/0x2b8 [ 86.348029][ T4241] el0_svc_common+0x138/0x258 [ 86.349327][ T4241] do_el0_svc+0x58/0x14c [ 86.350526][ T4241] el0_svc+0x78/0x1e0 [ 86.351680][ T4241] el0t_64_sync_handler+0xcc/0xe4 [ 86.353127][ T4241] el0t_64_sync+0x1a0/0x1a4 [ 86.367221][ T4240] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 86.370859][ T4240] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 86.372892][ T4241] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 86.381199][ T4240] syz-executor375 (4240): drop_caches: 2 [ 86.384142][ T4241] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 86.388813][ T4242] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 86.392741][ T4242] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 86.563695][ T4242] syz-executor375 (4242): drop_caches: 2 [ 86.578410][ T4241] syz-executor375 (4241): drop_caches: 2 [ 86.612434][ T4244] loop0: detected capacity change from 0 to 32768 executing program executing program [ 86.650704][ T4244] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 86.652964][ T4244] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 86.670413][ T4244] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 86.680277][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 86.682267][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 86.791390][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 109ms [ 86.793709][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 86.795165][ T4244] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 86.805875][ T4244] syz-executor375 (4244): drop_caches: 2 executing program [ 87.262595][ T4245] loop2: detected capacity change from 0 to 32768 [ 87.360290][ T4245] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 87.362702][ T4245] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 87.392044][ T4245] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 87.395355][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 87.397253][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 87.496322][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 99ms [ 87.505729][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 87.507216][ T4245] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 87.516529][ T4245] syz-executor375 (4245): drop_caches: 2 [ 87.627319][ T4247] loop4: detected capacity change from 0 to 32768 [ 87.652118][ T4247] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 87.653931][ T4246] loop1: detected capacity change from 0 to 32768 [ 87.654399][ T4247] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 87.668357][ T4247] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 87.671569][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 87.672864][ T4246] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 87.673416][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 87.675401][ T4246] CPU: 0 PID: 4246 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 87.679493][ T4246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 87.682203][ T4246] Call trace: [ 87.683076][ T4246] dump_backtrace+0x0/0x43c [ 87.684274][ T4246] show_stack+0x2c/0x3c [ 87.685392][ T4246] __dump_stack+0x30/0x40 [ 87.686484][ T4246] dump_stack_lvl+0xf8/0x160 [ 87.687725][ T4246] dump_stack+0x1c/0x5c [ 87.688827][ T4246] sysfs_create_dir_ns+0x22c/0x24c [ 87.690205][ T4246] kobject_add_internal+0x590/0xc54 [ 87.691623][ T4246] kobject_init_and_add+0x118/0x17c [ 87.693033][ T4246] gfs2_sys_fs_add+0x1dc/0x3d8 [ 87.694309][ T4246] gfs2_fill_super+0xdac/0x19e0 [ 87.695589][ T4246] get_tree_bdev+0x358/0x544 [ 87.696797][ T4246] gfs2_get_tree+0x54/0x1b4 [ 87.697988][ T4246] vfs_get_tree+0x90/0x274 [ 87.699147][ T4246] do_new_mount+0x228/0x810 [ 87.700350][ T4246] path_mount+0x5b4/0x1000 [ 87.701511][ T4246] __arm64_sys_mount+0x514/0x5e4 [ 87.702832][ T4246] invoke_syscall+0x98/0x2b8 [ 87.704060][ T4246] el0_svc_common+0x138/0x258 [ 87.705367][ T4246] do_el0_svc+0x58/0x14c [ 87.706526][ T4246] el0_svc+0x78/0x1e0 [ 87.707614][ T4246] el0t_64_sync_handler+0xcc/0xe4 [ 87.708949][ T4246] el0t_64_sync+0x1a0/0x1a4 [ 87.757857][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 84ms [ 87.760039][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 87.761466][ T4247] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 87.769801][ T4248] loop3: detected capacity change from 0 to 32768 [ 87.770492][ T4247] syz-executor375 (4247): drop_caches: 2 [ 87.806001][ T4246] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 87.826027][ T4248] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 87.827206][ T4246] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 87.828040][ T4248] CPU: 1 PID: 4248 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 87.832077][ T4248] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 87.833398][ T4249] loop0: detected capacity change from 0 to 32768 [ 87.834693][ T4248] Call trace: [ 87.837285][ T4248] dump_backtrace+0x0/0x43c [ 87.838348][ T4246] syz-executor375 (4246): drop_caches: 2 [ 87.838502][ T4248] show_stack+0x2c/0x3c [ 87.841075][ T4248] __dump_stack+0x30/0x40 [ 87.842217][ T4248] dump_stack_lvl+0xf8/0x160 [ 87.843424][ T4248] dump_stack+0x1c/0x5c [ 87.844563][ T4248] sysfs_create_dir_ns+0x22c/0x24c [ 87.845897][ T4248] kobject_add_internal+0x590/0xc54 [ 87.847272][ T4248] kobject_init_and_add+0x118/0x17c [ 87.848659][ T4248] gfs2_sys_fs_add+0x1dc/0x3d8 [ 87.849970][ T4248] gfs2_fill_super+0xdac/0x19e0 [ 87.851238][ T4248] get_tree_bdev+0x358/0x544 [ 87.852466][ T4248] gfs2_get_tree+0x54/0x1b4 [ 87.853728][ T4248] vfs_get_tree+0x90/0x274 [ 87.854903][ T4248] do_new_mount+0x228/0x810 [ 87.856148][ T4248] path_mount+0x5b4/0x1000 [ 87.857335][ T4248] __arm64_sys_mount+0x514/0x5e4 [ 87.858660][ T4248] invoke_syscall+0x98/0x2b8 [ 87.859927][ T4248] el0_svc_common+0x138/0x258 [ 87.861224][ T4248] do_el0_svc+0x58/0x14c [ 87.862324][ T4248] el0_svc+0x78/0x1e0 [ 87.863419][ T4248] el0t_64_sync_handler+0xcc/0xe4 executing program [ 87.864747][ T4248] el0t_64_sync+0x1a0/0x1a4 executing program executing program [ 87.920076][ T4249] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 87.922309][ T4249] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 87.947410][ T4249] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 87.951031][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 87.952937][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 88.027082][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 74ms [ 88.029275][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 88.030709][ T4249] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 88.040985][ T4249] syz-executor375 (4249): drop_caches: 2 [ 88.073655][ T4248] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 88.077421][ T4248] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 88.323582][ T4248] syz-executor375 (4248): drop_caches: 2 executing program [ 88.684194][ T4251] loop1: detected capacity change from 0 to 32768 [ 88.763863][ T4251] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 88.766152][ T4250] loop4: detected capacity change from 0 to 32768 [ 88.768016][ T4251] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 88.794457][ T4251] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 88.804181][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 88.806086][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 88.855900][ T4250] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 88.857927][ T4250] CPU: 0 PID: 4250 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 88.860308][ T4250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 88.862972][ T4250] Call trace: [ 88.863846][ T4250] dump_backtrace+0x0/0x43c [ 88.865085][ T4250] show_stack+0x2c/0x3c [ 88.866135][ T4250] __dump_stack+0x30/0x40 [ 88.867270][ T4250] dump_stack_lvl+0xf8/0x160 [ 88.868478][ T4250] dump_stack+0x1c/0x5c [ 88.869572][ T4250] sysfs_create_dir_ns+0x22c/0x24c [ 88.870897][ T4250] kobject_add_internal+0x590/0xc54 [ 88.872269][ T4250] kobject_init_and_add+0x118/0x17c [ 88.873620][ T4250] gfs2_sys_fs_add+0x1dc/0x3d8 [ 88.874906][ T4250] gfs2_fill_super+0xdac/0x19e0 [ 88.876182][ T4250] get_tree_bdev+0x358/0x544 [ 88.877389][ T4250] gfs2_get_tree+0x54/0x1b4 [ 88.878565][ T4250] vfs_get_tree+0x90/0x274 [ 88.879791][ T4250] do_new_mount+0x228/0x810 [ 88.880957][ T4250] path_mount+0x5b4/0x1000 [ 88.882126][ T4250] __arm64_sys_mount+0x514/0x5e4 [ 88.883384][ T4250] invoke_syscall+0x98/0x2b8 [ 88.884602][ T4250] el0_svc_common+0x138/0x258 [ 88.885764][ T4250] do_el0_svc+0x58/0x14c [ 88.886934][ T4250] el0_svc+0x78/0x1e0 [ 88.887985][ T4250] el0t_64_sync_handler+0xcc/0xe4 [ 88.889321][ T4250] el0t_64_sync+0x1a0/0x1a4 [ 88.919815][ T4252] loop2: detected capacity change from 0 to 32768 [ 88.921400][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 115ms [ 88.923816][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 88.925222][ T4251] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 88.933767][ T4251] syz-executor375 (4251): drop_caches: 2 [ 88.942753][ T4252] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 88.944693][ T4252] CPU: 0 PID: 4252 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 88.946901][ T4252] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 88.949600][ T4252] Call trace: [ 88.950483][ T4252] dump_backtrace+0x0/0x43c [ 88.951717][ T4252] show_stack+0x2c/0x3c [ 88.952814][ T4252] __dump_stack+0x30/0x40 [ 88.953970][ T4252] dump_stack_lvl+0xf8/0x160 [ 88.955247][ T4252] dump_stack+0x1c/0x5c [ 88.956329][ T4252] sysfs_create_dir_ns+0x22c/0x24c [ 88.957692][ T4252] kobject_add_internal+0x590/0xc54 [ 88.959030][ T4252] kobject_init_and_add+0x118/0x17c [ 88.960392][ T4252] gfs2_sys_fs_add+0x1dc/0x3d8 [ 88.961650][ T4252] gfs2_fill_super+0xdac/0x19e0 [ 88.963109][ T4252] get_tree_bdev+0x358/0x544 [ 88.964353][ T4252] gfs2_get_tree+0x54/0x1b4 [ 88.965607][ T4252] vfs_get_tree+0x90/0x274 [ 88.966817][ T4252] do_new_mount+0x228/0x810 [ 88.968062][ T4252] path_mount+0x5b4/0x1000 [ 88.969213][ T4252] __arm64_sys_mount+0x514/0x5e4 [ 88.970513][ T4252] invoke_syscall+0x98/0x2b8 [ 88.971787][ T4252] el0_svc_common+0x138/0x258 [ 88.973042][ T4252] do_el0_svc+0x58/0x14c [ 88.974157][ T4252] el0_svc+0x78/0x1e0 [ 88.975243][ T4252] el0t_64_sync_handler+0xcc/0xe4 [ 88.976613][ T4252] el0t_64_sync+0x1a0/0x1a4 [ 89.011166][ T4250] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 89.014856][ T4250] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 89.046866][ T4252] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 89.050387][ T4252] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 89.053187][ T4252] syz-executor375 (4252): drop_caches: 2 [ 89.059466][ T4253] loop0: detected capacity change from 0 to 32768 executing program [ 89.103110][ T4253] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 89.105305][ T4253] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 89.147200][ T4253] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 89.162289][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 89.164221][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 89.277549][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 113ms [ 89.282210][ T4250] syz-executor375 (4250): drop_caches: 2 [ 89.284553][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 89.293405][ T4253] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 89.300897][ T4253] syz-executor375 (4253): drop_caches: 2 executing program executing program [ 89.418081][ T4254] loop3: detected capacity change from 0 to 32768 [ 89.457773][ T4254] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 89.460159][ T4254] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 89.478777][ T4254] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 89.486715][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 89.488608][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 89.581213][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 92ms [ 89.585423][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 89.595464][ T4254] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 89.607568][ T4254] syz-executor375 (4254): drop_caches: 2 [ 89.794486][ T4256] loop1: detected capacity change from 0 to 32768 [ 89.818909][ T4256] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 89.821280][ T4256] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 89.841129][ T4256] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 89.863776][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use executing program [ 89.873317][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 89.984204][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 110ms [ 89.986521][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 89.987951][ T4256] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 90.021934][ T4256] syz-executor375 (4256): drop_caches: 2 executing program [ 90.280306][ T4255] loop2: detected capacity change from 0 to 32768 [ 90.287583][ T4255] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 90.290056][ T4255] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 90.342051][ T4255] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 90.347783][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 90.349571][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 90.465432][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 115ms [ 90.467908][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 90.469321][ T4255] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 90.480309][ T4258] loop0: detected capacity change from 0 to 32768 [ 90.483000][ T4255] syz-executor375 (4255): drop_caches: 2 [ 90.521663][ T4257] loop4: detected capacity change from 0 to 32768 [ 90.525065][ T4258] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 90.527837][ T4258] CPU: 1 PID: 4258 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 90.530168][ T4258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 90.532856][ T4258] Call trace: [ 90.533671][ T4258] dump_backtrace+0x0/0x43c [ 90.534867][ T4258] show_stack+0x2c/0x3c [ 90.535892][ T4258] __dump_stack+0x30/0x40 [ 90.537048][ T4258] dump_stack_lvl+0xf8/0x160 [ 90.538251][ T4258] dump_stack+0x1c/0x5c [ 90.539356][ T4258] sysfs_create_dir_ns+0x22c/0x24c [ 90.540755][ T4258] kobject_add_internal+0x590/0xc54 [ 90.542147][ T4258] kobject_init_and_add+0x118/0x17c [ 90.543502][ T4258] gfs2_sys_fs_add+0x1dc/0x3d8 [ 90.544745][ T4258] gfs2_fill_super+0xdac/0x19e0 [ 90.546062][ T4258] get_tree_bdev+0x358/0x544 [ 90.547339][ T4258] gfs2_get_tree+0x54/0x1b4 [ 90.548517][ T4258] vfs_get_tree+0x90/0x274 [ 90.549724][ T4258] do_new_mount+0x228/0x810 [ 90.550886][ T4258] path_mount+0x5b4/0x1000 [ 90.552035][ T4258] __arm64_sys_mount+0x514/0x5e4 [ 90.553335][ T4258] invoke_syscall+0x98/0x2b8 [ 90.554534][ T4258] el0_svc_common+0x138/0x258 [ 90.555755][ T4258] do_el0_svc+0x58/0x14c [ 90.556890][ T4258] el0_svc+0x78/0x1e0 [ 90.557959][ T4258] el0t_64_sync_handler+0xcc/0xe4 [ 90.559281][ T4258] el0t_64_sync+0x1a0/0x1a4 executing program [ 90.591471][ T4257] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 90.593664][ T4257] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 90.622961][ T4257] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 90.638009][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 90.639949][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 90.673802][ T4259] loop3: detected capacity change from 0 to 32768 [ 90.721825][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 81ms [ 90.724048][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 90.725462][ T4257] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 90.734678][ T4257] syz-executor375 (4257): drop_caches: 2 [ 90.738579][ T4258] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 90.743629][ T4258] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 90.752720][ T4259] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 90.754798][ T4259] CPU: 1 PID: 4259 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 90.757210][ T4259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 90.760115][ T4259] Call trace: [ 90.760983][ T4259] dump_backtrace+0x0/0x43c [ 90.762172][ T4259] show_stack+0x2c/0x3c [ 90.763235][ T4259] __dump_stack+0x30/0x40 [ 90.764415][ T4259] dump_stack_lvl+0xf8/0x160 [ 90.765622][ T4259] dump_stack+0x1c/0x5c [ 90.766717][ T4259] sysfs_create_dir_ns+0x22c/0x24c [ 90.768100][ T4259] kobject_add_internal+0x590/0xc54 [ 90.769438][ T4259] kobject_init_and_add+0x118/0x17c [ 90.770871][ T4259] gfs2_sys_fs_add+0x1dc/0x3d8 [ 90.772144][ T4259] gfs2_fill_super+0xdac/0x19e0 [ 90.773434][ T4259] get_tree_bdev+0x358/0x544 [ 90.774655][ T4259] gfs2_get_tree+0x54/0x1b4 [ 90.775831][ T4259] vfs_get_tree+0x90/0x274 [ 90.777096][ T4259] do_new_mount+0x228/0x810 [ 90.778281][ T4259] path_mount+0x5b4/0x1000 [ 90.779445][ T4259] __arm64_sys_mount+0x514/0x5e4 [ 90.780734][ T4259] invoke_syscall+0x98/0x2b8 [ 90.781973][ T4259] el0_svc_common+0x138/0x258 [ 90.783216][ T4259] do_el0_svc+0x58/0x14c [ 90.784332][ T4259] el0_svc+0x78/0x1e0 [ 90.785399][ T4259] el0t_64_sync_handler+0xcc/0xe4 [ 90.786696][ T4259] el0t_64_sync+0x1a0/0x1a4 [ 90.806683][ T4258] syz-executor375 (4258): drop_caches: 2 [ 90.831077][ T4259] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 90.840508][ T4259] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program executing program [ 90.866330][ T4259] syz-executor375 (4259): drop_caches: 2 executing program [ 91.212064][ T4260] loop1: detected capacity change from 0 to 32768 [ 91.280663][ T4260] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 91.283010][ T4260] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 91.318013][ T4260] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 91.321127][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 91.322886][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 91.443112][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 120ms [ 91.454671][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 91.462714][ T4260] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 91.470981][ T4260] syz-executor375 (4260): drop_caches: 2 [ 91.514732][ T4261] loop2: detected capacity change from 0 to 32768 [ 91.563360][ T4261] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 91.575160][ T4261] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... executing program [ 91.602959][ T4263] loop4: detected capacity change from 0 to 32768 [ 91.618014][ T4261] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 91.621336][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 91.623293][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 91.668579][ T4263] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 91.670583][ T4263] CPU: 0 PID: 4263 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 91.672829][ T4263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 91.675483][ T4263] Call trace: [ 91.676355][ T4263] dump_backtrace+0x0/0x43c [ 91.677530][ T4263] show_stack+0x2c/0x3c [ 91.678592][ T4263] __dump_stack+0x30/0x40 [ 91.679749][ T4263] dump_stack_lvl+0xf8/0x160 [ 91.680960][ T4263] dump_stack+0x1c/0x5c [ 91.682092][ T4263] sysfs_create_dir_ns+0x22c/0x24c [ 91.683462][ T4263] kobject_add_internal+0x590/0xc54 [ 91.684805][ T4263] kobject_init_and_add+0x118/0x17c [ 91.686151][ T4263] gfs2_sys_fs_add+0x1dc/0x3d8 [ 91.687454][ T4263] gfs2_fill_super+0xdac/0x19e0 [ 91.688713][ T4263] get_tree_bdev+0x358/0x544 [ 91.690022][ T4263] gfs2_get_tree+0x54/0x1b4 [ 91.691252][ T4263] vfs_get_tree+0x90/0x274 [ 91.692413][ T4263] do_new_mount+0x228/0x810 [ 91.693615][ T4263] path_mount+0x5b4/0x1000 [ 91.694758][ T4263] __arm64_sys_mount+0x514/0x5e4 [ 91.696081][ T4263] invoke_syscall+0x98/0x2b8 [ 91.697333][ T4263] el0_svc_common+0x138/0x258 [ 91.698559][ T4263] do_el0_svc+0x58/0x14c [ 91.699727][ T4263] el0_svc+0x78/0x1e0 [ 91.700765][ T4263] el0t_64_sync_handler+0xcc/0xe4 [ 91.702097][ T4263] el0t_64_sync+0x1a0/0x1a4 [ 91.733594][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 110ms [ 91.735763][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 91.742681][ T4261] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 91.757568][ T4261] syz-executor375 (4261): drop_caches: 2 [ 91.785758][ T4263] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 91.795536][ T4263] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 91.833782][ T4262] loop0: detected capacity change from 0 to 32768 executing program [ 91.872108][ T4264] loop3: detected capacity change from 0 to 32768 [ 91.909314][ T4262] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 91.911714][ T4262] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 91.919493][ T4264] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 91.921526][ T4264] CPU: 0 PID: 4264 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 91.923709][ T4264] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 91.926413][ T4264] Call trace: [ 91.927267][ T4264] dump_backtrace+0x0/0x43c [ 91.928422][ T4264] show_stack+0x2c/0x3c [ 91.929513][ T4264] __dump_stack+0x30/0x40 [ 91.930655][ T4264] dump_stack_lvl+0xf8/0x160 [ 91.931869][ T4264] dump_stack+0x1c/0x5c [ 91.932930][ T4264] sysfs_create_dir_ns+0x22c/0x24c [ 91.934267][ T4264] kobject_add_internal+0x590/0xc54 [ 91.935623][ T4264] kobject_init_and_add+0x118/0x17c [ 91.937069][ T4264] gfs2_sys_fs_add+0x1dc/0x3d8 [ 91.938367][ T4264] gfs2_fill_super+0xdac/0x19e0 [ 91.939628][ T4264] get_tree_bdev+0x358/0x544 [ 91.940875][ T4264] gfs2_get_tree+0x54/0x1b4 [ 91.942078][ T4264] vfs_get_tree+0x90/0x274 [ 91.943271][ T4264] do_new_mount+0x228/0x810 [ 91.944503][ T4264] path_mount+0x5b4/0x1000 [ 91.945664][ T4264] __arm64_sys_mount+0x514/0x5e4 [ 91.946927][ T4264] invoke_syscall+0x98/0x2b8 [ 91.948100][ T4264] el0_svc_common+0x138/0x258 [ 91.949379][ T4264] do_el0_svc+0x58/0x14c [ 91.950502][ T4264] el0_svc+0x78/0x1e0 [ 91.951550][ T4264] el0t_64_sync_handler+0xcc/0xe4 [ 91.952876][ T4264] el0t_64_sync+0x1a0/0x1a4 [ 91.974435][ T4262] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 91.978584][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 91.980389][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 92.065233][ T4263] syz-executor375 (4263): drop_caches: 2 [ 92.074500][ T4264] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 92.076044][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 95ms [ 92.078339][ T4264] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 92.092670][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 92.094151][ T4262] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 92.108611][ T4262] syz-executor375 (4262): drop_caches: 2 executing program [ 92.322157][ T4264] syz-executor375 (4264): drop_caches: 2 executing program [ 92.531274][ T4265] loop1: detected capacity change from 0 to 32768 [ 92.567690][ T4265] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 92.570048][ T4265] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 92.584392][ T4265] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 92.592350][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 92.593869][ T4266] loop2: detected capacity change from 0 to 32768 [ 92.594149][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 92.647903][ T4266] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 92.649932][ T4266] CPU: 1 PID: 4266 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 92.652064][ T4266] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 92.654643][ T4266] Call trace: [ 92.655471][ T4266] dump_backtrace+0x0/0x43c [ 92.656638][ T4266] show_stack+0x2c/0x3c [ 92.657727][ T4266] __dump_stack+0x30/0x40 [ 92.658864][ T4266] dump_stack_lvl+0xf8/0x160 [ 92.660081][ T4266] dump_stack+0x1c/0x5c [ 92.661190][ T4266] sysfs_create_dir_ns+0x22c/0x24c [ 92.662505][ T4266] kobject_add_internal+0x590/0xc54 [ 92.663913][ T4266] kobject_init_and_add+0x118/0x17c [ 92.665320][ T4266] gfs2_sys_fs_add+0x1dc/0x3d8 [ 92.666563][ T4266] gfs2_fill_super+0xdac/0x19e0 [ 92.667865][ T4266] get_tree_bdev+0x358/0x544 [ 92.669099][ T4266] gfs2_get_tree+0x54/0x1b4 [ 92.670302][ T4266] vfs_get_tree+0x90/0x274 [ 92.671494][ T4266] do_new_mount+0x228/0x810 [ 92.672655][ T4266] path_mount+0x5b4/0x1000 [ 92.673805][ T4266] __arm64_sys_mount+0x514/0x5e4 [ 92.675079][ T4266] invoke_syscall+0x98/0x2b8 [ 92.676242][ T4266] el0_svc_common+0x138/0x258 [ 92.677507][ T4266] do_el0_svc+0x58/0x14c [ 92.678595][ T4266] el0_svc+0x78/0x1e0 [ 92.679632][ T4266] el0t_64_sync_handler+0xcc/0xe4 [ 92.680966][ T4266] el0t_64_sync+0x1a0/0x1a4 [ 92.714055][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 119ms [ 92.719121][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 92.720567][ T4265] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 92.733603][ T4266] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 92.733637][ T4265] syz-executor375 (4265): drop_caches: 2 [ 92.738319][ T4266] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 92.947080][ T4266] syz-executor375 (4266): drop_caches: 2 executing program [ 93.092787][ T4267] loop4: detected capacity change from 0 to 32768 [ 93.126230][ T4267] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 93.128431][ T4267] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 93.142085][ T4268] loop0: detected capacity change from 0 to 32768 [ 93.177570][ T4268] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 93.179548][ T4268] CPU: 0 PID: 4268 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 93.181789][ T4268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 93.184524][ T4268] Call trace: [ 93.185398][ T4268] dump_backtrace+0x0/0x43c [ 93.186556][ T4268] show_stack+0x2c/0x3c [ 93.187630][ T4268] __dump_stack+0x30/0x40 [ 93.188874][ T4268] dump_stack_lvl+0xf8/0x160 [ 93.190109][ T4268] dump_stack+0x1c/0x5c [ 93.191190][ T4268] sysfs_create_dir_ns+0x22c/0x24c [ 93.192573][ T4268] kobject_add_internal+0x590/0xc54 [ 93.193920][ T4268] kobject_init_and_add+0x118/0x17c [ 93.195342][ T4268] gfs2_sys_fs_add+0x1dc/0x3d8 [ 93.196603][ T4268] gfs2_fill_super+0xdac/0x19e0 [ 93.197901][ T4268] get_tree_bdev+0x358/0x544 [ 93.199131][ T4268] gfs2_get_tree+0x54/0x1b4 [ 93.200333][ T4268] vfs_get_tree+0x90/0x274 [ 93.201504][ T4268] do_new_mount+0x228/0x810 [ 93.202705][ T4268] path_mount+0x5b4/0x1000 [ 93.203884][ T4268] __arm64_sys_mount+0x514/0x5e4 [ 93.205208][ T4268] invoke_syscall+0x98/0x2b8 [ 93.206523][ T4268] el0_svc_common+0x138/0x258 [ 93.207775][ T4268] do_el0_svc+0x58/0x14c [ 93.208962][ T4268] el0_svc+0x78/0x1e0 [ 93.209983][ T4268] el0t_64_sync_handler+0xcc/0xe4 [ 93.211432][ T4268] el0t_64_sync+0x1a0/0x1a4 [ 93.214201][ T4267] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 93.226634][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 93.228470][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 93.275412][ T4269] loop3: detected capacity change from 0 to 32768 [ 93.277367][ T4268] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 93.292827][ T4268] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 93.315655][ T4269] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 93.317620][ T4269] CPU: 0 PID: 4269 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 93.319895][ T4269] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 93.322486][ T4269] Call trace: [ 93.323376][ T4269] dump_backtrace+0x0/0x43c [ 93.324552][ T4269] show_stack+0x2c/0x3c [ 93.325662][ T4269] __dump_stack+0x30/0x40 [ 93.326794][ T4269] dump_stack_lvl+0xf8/0x160 [ 93.328045][ T4269] dump_stack+0x1c/0x5c [ 93.329177][ T4269] sysfs_create_dir_ns+0x22c/0x24c [ 93.330498][ T4269] kobject_add_internal+0x590/0xc54 [ 93.331065][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 102ms [ 93.331829][ T4269] kobject_init_and_add+0x118/0x17c [ 93.333933][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 93.335136][ T4269] gfs2_sys_fs_add+0x1dc/0x3d8 [ 93.335151][ T4269] gfs2_fill_super+0xdac/0x19e0 [ 93.335162][ T4269] get_tree_bdev+0x358/0x544 [ 93.335172][ T4269] gfs2_get_tree+0x54/0x1b4 [ 93.341330][ T4269] vfs_get_tree+0x90/0x274 [ 93.342468][ T4269] do_new_mount+0x228/0x810 [ 93.343647][ T4269] path_mount+0x5b4/0x1000 [ 93.344816][ T4269] __arm64_sys_mount+0x514/0x5e4 [ 93.346160][ T4269] invoke_syscall+0x98/0x2b8 [ 93.347381][ T4269] el0_svc_common+0x138/0x258 [ 93.348627][ T4269] do_el0_svc+0x58/0x14c [ 93.349772][ T4269] el0_svc+0x78/0x1e0 [ 93.350419][ T4267] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 93.350776][ T4269] el0t_64_sync_handler+0xcc/0xe4 [ 93.354007][ T4269] el0t_64_sync+0x1a0/0x1a4 [ 93.360754][ T4267] syz-executor375 (4267): drop_caches: 2 [ 93.430759][ T4269] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. executing program [ 93.473234][ T4269] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 93.496152][ T4269] syz-executor375 (4269): drop_caches: 2 executing program [ 93.588176][ T4268] syz-executor375 (4268): drop_caches: 2 executing program [ 93.693786][ T4270] loop1: detected capacity change from 0 to 32768 [ 93.763128][ T4270] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 93.765588][ T4270] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 93.770502][ T4270] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 93.783229][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 93.785073][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 93.842199][ T4271] loop2: detected capacity change from 0 to 32768 [ 93.882266][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 97ms [ 93.885278][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 93.886866][ T4270] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 93.894449][ T4270] syz-executor375 (4270): drop_caches: 2 [ 93.901968][ T4271] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 93.903933][ T4271] CPU: 0 PID: 4271 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 93.906070][ T4271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 93.908646][ T4271] Call trace: [ 93.909502][ T4271] dump_backtrace+0x0/0x43c [ 93.910649][ T4271] show_stack+0x2c/0x3c [ 93.911677][ T4271] __dump_stack+0x30/0x40 [ 93.912745][ T4271] dump_stack_lvl+0xf8/0x160 [ 93.913956][ T4271] dump_stack+0x1c/0x5c [ 93.915016][ T4271] sysfs_create_dir_ns+0x22c/0x24c [ 93.916285][ T4271] kobject_add_internal+0x590/0xc54 [ 93.917576][ T4271] kobject_init_and_add+0x118/0x17c [ 93.918891][ T4271] gfs2_sys_fs_add+0x1dc/0x3d8 [ 93.920131][ T4271] gfs2_fill_super+0xdac/0x19e0 [ 93.921375][ T4271] get_tree_bdev+0x358/0x544 [ 93.922508][ T4271] gfs2_get_tree+0x54/0x1b4 [ 93.923663][ T4271] vfs_get_tree+0x90/0x274 [ 93.924735][ T4271] do_new_mount+0x228/0x810 [ 93.925855][ T4271] path_mount+0x5b4/0x1000 [ 93.926950][ T4271] __arm64_sys_mount+0x514/0x5e4 [ 93.928179][ T4271] invoke_syscall+0x98/0x2b8 [ 93.929290][ T4271] el0_svc_common+0x138/0x258 [ 93.930473][ T4271] do_el0_svc+0x58/0x14c [ 93.931533][ T4271] el0_svc+0x78/0x1e0 [ 93.932546][ T4271] el0t_64_sync_handler+0xcc/0xe4 [ 93.933813][ T4271] el0t_64_sync+0x1a0/0x1a4 [ 93.965815][ T4271] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 93.990560][ T4271] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 93.993307][ T4271] syz-executor375 (4271): drop_caches: 2 executing program [ 94.158816][ T4272] loop4: detected capacity change from 0 to 32768 [ 94.223834][ T4272] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 94.226109][ T4272] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 94.241723][ T4272] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 6ms executing program [ 94.265013][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 94.267145][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 94.375959][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 108ms [ 94.378055][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 94.379307][ T4272] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 94.391506][ T4272] syz-executor375 (4272): drop_caches: 2 [ 94.540770][ T4273] loop3: detected capacity change from 0 to 32768 [ 94.582984][ T4273] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 94.585028][ T4273] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 94.614969][ T4273] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 94.625734][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 94.627431][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 94.664833][ T4274] loop0: detected capacity change from 0 to 32768 [ 94.732417][ T4274] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 94.734430][ T4274] CPU: 0 PID: 4274 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 94.736635][ T4274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 94.739213][ T4274] Call trace: [ 94.740064][ T4274] dump_backtrace+0x0/0x43c [ 94.741207][ T4274] show_stack+0x2c/0x3c [ 94.742298][ T4274] __dump_stack+0x30/0x40 [ 94.743395][ T4274] dump_stack_lvl+0xf8/0x160 [ 94.744578][ T4274] dump_stack+0x1c/0x5c [ 94.745699][ T4274] sysfs_create_dir_ns+0x22c/0x24c [ 94.747043][ T4274] kobject_add_internal+0x590/0xc54 [ 94.748385][ T4274] kobject_init_and_add+0x118/0x17c [ 94.749751][ T4274] gfs2_sys_fs_add+0x1dc/0x3d8 [ 94.750996][ T4274] gfs2_fill_super+0xdac/0x19e0 [ 94.752268][ T4274] get_tree_bdev+0x358/0x544 [ 94.753467][ T4274] gfs2_get_tree+0x54/0x1b4 [ 94.754654][ T4274] vfs_get_tree+0x90/0x274 [ 94.755778][ T4274] do_new_mount+0x228/0x810 [ 94.756956][ T4274] path_mount+0x5b4/0x1000 [ 94.758107][ T4274] __arm64_sys_mount+0x514/0x5e4 [ 94.759363][ T4274] invoke_syscall+0x98/0x2b8 [ 94.760553][ T4274] el0_svc_common+0x138/0x258 [ 94.761767][ T4274] do_el0_svc+0x58/0x14c [ 94.762879][ T4274] el0_svc+0x78/0x1e0 [ 94.763981][ T4274] el0t_64_sync_handler+0xcc/0xe4 [ 94.765274][ T4274] el0t_64_sync+0x1a0/0x1a4 executing program [ 94.776009][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 148ms [ 94.778085][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 94.779604][ T4273] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 94.799556][ T4273] syz-executor375 (4273): drop_caches: 2 [ 94.855721][ T4274] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 94.859164][ T4274] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 94.863905][ T4274] syz-executor375 (4274): drop_caches: 2 [ 94.879090][ T4275] loop2: detected capacity change from 0 to 32768 executing program executing program [ 95.007824][ T4275] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 95.010100][ T4275] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 95.047422][ T4275] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 95.066233][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 95.068100][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 95.153483][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 85ms [ 95.155726][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 95.157093][ T4275] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 95.186237][ T4275] syz-executor375 (4275): drop_caches: 2 [ 95.188420][ T4276] loop1: detected capacity change from 0 to 32768 [ 95.206583][ T4276] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 95.208586][ T4276] CPU: 0 PID: 4276 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 95.210901][ T4276] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 95.213504][ T4276] Call trace: [ 95.214582][ T4276] dump_backtrace+0x0/0x43c [ 95.215723][ T4276] show_stack+0x2c/0x3c [ 95.216839][ T4276] __dump_stack+0x30/0x40 [ 95.217986][ T4276] dump_stack_lvl+0xf8/0x160 [ 95.219187][ T4276] dump_stack+0x1c/0x5c [ 95.220311][ T4276] sysfs_create_dir_ns+0x22c/0x24c [ 95.221686][ T4276] kobject_add_internal+0x590/0xc54 [ 95.223034][ T4276] kobject_init_and_add+0x118/0x17c [ 95.224461][ T4276] gfs2_sys_fs_add+0x1dc/0x3d8 [ 95.225692][ T4276] gfs2_fill_super+0xdac/0x19e0 [ 95.227049][ T4276] get_tree_bdev+0x358/0x544 [ 95.228253][ T4276] gfs2_get_tree+0x54/0x1b4 [ 95.229435][ T4276] vfs_get_tree+0x90/0x274 [ 95.230596][ T4276] do_new_mount+0x228/0x810 [ 95.231781][ T4276] path_mount+0x5b4/0x1000 [ 95.232985][ T4276] __arm64_sys_mount+0x514/0x5e4 [ 95.234298][ T4276] invoke_syscall+0x98/0x2b8 [ 95.235483][ T4276] el0_svc_common+0x138/0x258 [ 95.236705][ T4276] do_el0_svc+0x58/0x14c [ 95.237797][ T4276] el0_svc+0x78/0x1e0 [ 95.238813][ T4276] el0t_64_sync_handler+0xcc/0xe4 [ 95.240114][ T4276] el0t_64_sync+0x1a0/0x1a4 [ 95.384218][ T4276] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. executing program [ 95.405111][ T4276] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 95.414524][ T4276] syz-executor375 (4276): drop_caches: 2 executing program [ 95.642283][ T4279] loop3: detected capacity change from 0 to 32768 [ 95.737735][ T4279] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 95.740010][ T4279] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 95.763419][ T4279] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 95.766793][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 95.768595][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 95.772459][ T4277] loop4: detected capacity change from 0 to 32768 [ 95.837500][ T4277] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 95.839561][ T4277] CPU: 0 PID: 4277 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 95.841832][ T4277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 95.844437][ T4277] Call trace: [ 95.845308][ T4277] dump_backtrace+0x0/0x43c [ 95.846490][ T4277] show_stack+0x2c/0x3c [ 95.847597][ T4277] __dump_stack+0x30/0x40 [ 95.848701][ T4277] dump_stack_lvl+0xf8/0x160 [ 95.849892][ T4277] dump_stack+0x1c/0x5c [ 95.851064][ T4277] sysfs_create_dir_ns+0x22c/0x24c [ 95.852431][ T4277] kobject_add_internal+0x590/0xc54 [ 95.853833][ T4277] kobject_init_and_add+0x118/0x17c [ 95.855208][ T4277] gfs2_sys_fs_add+0x1dc/0x3d8 [ 95.856471][ T4277] gfs2_fill_super+0xdac/0x19e0 [ 95.857747][ T4277] get_tree_bdev+0x358/0x544 [ 95.858966][ T4277] gfs2_get_tree+0x54/0x1b4 [ 95.860177][ T4277] vfs_get_tree+0x90/0x274 [ 95.861318][ T4277] do_new_mount+0x228/0x810 [ 95.862513][ T4277] path_mount+0x5b4/0x1000 [ 95.863651][ T4277] __arm64_sys_mount+0x514/0x5e4 [ 95.864962][ T4277] invoke_syscall+0x98/0x2b8 [ 95.866147][ T4277] el0_svc_common+0x138/0x258 [ 95.867405][ T4277] do_el0_svc+0x58/0x14c [ 95.867840][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 99ms [ 95.868522][ T4277] el0_svc+0x78/0x1e0 [ 95.871468][ T4277] el0t_64_sync_handler+0xcc/0xe4 [ 95.872810][ T4277] el0t_64_sync+0x1a0/0x1a4 [ 95.876140][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 95.877518][ T4279] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 95.898118][ T4279] syz-executor375 (4279): drop_caches: 2 [ 95.934622][ T4278] loop0: detected capacity change from 0 to 32768 [ 95.972161][ T4277] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 95.982274][ T4277] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 95.984961][ T4277] syz-executor375 (4277): drop_caches: 2 [ 95.993703][ T4278] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 95.995840][ T4278] CPU: 0 PID: 4278 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 95.998111][ T4278] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 96.000645][ T4278] Call trace: [ 96.001460][ T4278] dump_backtrace+0x0/0x43c [ 96.002642][ T4278] show_stack+0x2c/0x3c [ 96.003733][ T4278] __dump_stack+0x30/0x40 [ 96.004848][ T4278] dump_stack_lvl+0xf8/0x160 [ 96.006107][ T4278] dump_stack+0x1c/0x5c [ 96.007164][ T4278] sysfs_create_dir_ns+0x22c/0x24c [ 96.008513][ T4278] kobject_add_internal+0x590/0xc54 [ 96.009857][ T4278] kobject_init_and_add+0x118/0x17c [ 96.011236][ T4278] gfs2_sys_fs_add+0x1dc/0x3d8 [ 96.012518][ T4278] gfs2_fill_super+0xdac/0x19e0 [ 96.013761][ T4278] get_tree_bdev+0x358/0x544 [ 96.014939][ T4278] gfs2_get_tree+0x54/0x1b4 [ 96.016082][ T4278] vfs_get_tree+0x90/0x274 [ 96.017252][ T4278] do_new_mount+0x228/0x810 [ 96.018405][ T4278] path_mount+0x5b4/0x1000 [ 96.019564][ T4278] __arm64_sys_mount+0x514/0x5e4 [ 96.020876][ T4278] invoke_syscall+0x98/0x2b8 [ 96.022100][ T4278] el0_svc_common+0x138/0x258 [ 96.023263][ T4278] do_el0_svc+0x58/0x14c [ 96.024379][ T4278] el0_svc+0x78/0x1e0 [ 96.025427][ T4278] el0t_64_sync_handler+0xcc/0xe4 [ 96.026759][ T4278] el0t_64_sync+0x1a0/0x1a4 executing program [ 96.088967][ T4278] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 96.092444][ T4278] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 96.100002][ T4278] syz-executor375 (4278): drop_caches: 2 executing program [ 96.260329][ T4280] loop2: detected capacity change from 0 to 32768 executing program [ 96.283043][ T4280] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 96.292576][ T4280] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 96.329518][ T4280] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 96.333269][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 96.335265][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 96.432058][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 96ms [ 96.434274][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 96.450263][ T4280] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 96.461078][ T4280] syz-executor375 (4280): drop_caches: 2 [ 96.516709][ T4281] loop1: detected capacity change from 0 to 32768 executing program [ 96.635192][ T4281] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 96.637411][ T4281] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 96.646437][ T4281] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 96.649353][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 96.651026][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 96.746304][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 95ms [ 96.748500][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 96.749908][ T4281] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 96.763997][ T4281] syz-executor375 (4281): drop_caches: 2 [ 96.929666][ T4282] loop4: detected capacity change from 0 to 32768 executing program [ 97.010169][ T4283] loop0: detected capacity change from 0 to 32768 [ 97.065009][ T4282] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 97.067787][ T4282] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 97.070437][ T4283] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.072394][ T4283] CPU: 0 PID: 4283 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 97.074688][ T4283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 97.077380][ T4283] Call trace: [ 97.078255][ T4283] dump_backtrace+0x0/0x43c [ 97.079471][ T4283] show_stack+0x2c/0x3c [ 97.080626][ T4283] __dump_stack+0x30/0x40 [ 97.081839][ T4283] dump_stack_lvl+0xf8/0x160 [ 97.083072][ T4283] dump_stack+0x1c/0x5c [ 97.084197][ T4283] sysfs_create_dir_ns+0x22c/0x24c [ 97.085282][ T4282] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 97.085553][ T4283] kobject_add_internal+0x590/0xc54 [ 97.085569][ T4283] kobject_init_and_add+0x118/0x17c [ 97.085579][ T4283] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.085589][ T4283] gfs2_fill_super+0xdac/0x19e0 [ 97.085602][ T4283] get_tree_bdev+0x358/0x544 [ 97.094345][ T4283] gfs2_get_tree+0x54/0x1b4 [ 97.095573][ T4283] vfs_get_tree+0x90/0x274 [ 97.096775][ T4283] do_new_mount+0x228/0x810 [ 97.097975][ T4283] path_mount+0x5b4/0x1000 [ 97.099182][ T4283] __arm64_sys_mount+0x514/0x5e4 [ 97.100571][ T4283] invoke_syscall+0x98/0x2b8 [ 97.101838][ T4283] el0_svc_common+0x138/0x258 [ 97.103121][ T4283] do_el0_svc+0x58/0x14c [ 97.104308][ T4283] el0_svc+0x78/0x1e0 [ 97.105371][ T4283] el0t_64_sync_handler+0xcc/0xe4 [ 97.106016][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 97.106723][ T4283] el0t_64_sync+0x1a0/0x1a4 [ 97.108462][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 97.195225][ T4283] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.213339][ T4283] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.216612][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 108ms [ 97.218766][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 97.220125][ T4282] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 97.235888][ T4282] syz-executor375 (4282): drop_caches: 2 [ 97.248654][ T4284] loop3: detected capacity change from 0 to 32768 executing program [ 97.395787][ T4284] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 97.398055][ T4284] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 97.408656][ T4284] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 97.418511][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 97.420360][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 97.451966][ T4285] loop2: detected capacity change from 0 to 32768 [ 97.504467][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 84ms [ 97.506716][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 97.508072][ T4283] syz-executor375 (4283): drop_caches: 2 [ 97.508119][ T4284] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 97.542490][ T4284] syz-executor375 (4284): drop_caches: 2 executing program [ 97.632675][ T4285] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.634648][ T4285] CPU: 0 PID: 4285 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 97.636909][ T4285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 97.639515][ T4285] Call trace: [ 97.640376][ T4285] dump_backtrace+0x0/0x43c [ 97.641570][ T4285] show_stack+0x2c/0x3c [ 97.642706][ T4285] __dump_stack+0x30/0x40 [ 97.643836][ T4285] dump_stack_lvl+0xf8/0x160 [ 97.645036][ T4285] dump_stack+0x1c/0x5c [ 97.646144][ T4285] sysfs_create_dir_ns+0x22c/0x24c [ 97.647482][ T4285] kobject_add_internal+0x590/0xc54 [ 97.648826][ T4285] kobject_init_and_add+0x118/0x17c [ 97.650217][ T4285] gfs2_sys_fs_add+0x1dc/0x3d8 [ 97.651550][ T4285] gfs2_fill_super+0xdac/0x19e0 [ 97.652874][ T4285] get_tree_bdev+0x358/0x544 [ 97.654123][ T4285] gfs2_get_tree+0x54/0x1b4 [ 97.655288][ T4285] vfs_get_tree+0x90/0x274 [ 97.656421][ T4285] do_new_mount+0x228/0x810 [ 97.657601][ T4285] path_mount+0x5b4/0x1000 [ 97.658812][ T4285] __arm64_sys_mount+0x514/0x5e4 [ 97.660144][ T4285] invoke_syscall+0x98/0x2b8 [ 97.661323][ T4285] el0_svc_common+0x138/0x258 [ 97.662553][ T4285] do_el0_svc+0x58/0x14c [ 97.663669][ T4285] el0_svc+0x78/0x1e0 [ 97.664684][ T4285] el0t_64_sync_handler+0xcc/0xe4 [ 97.666010][ T4285] el0t_64_sync+0x1a0/0x1a4 executing program [ 97.775548][ T4285] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 97.778942][ T4285] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 97.904187][ T4287] loop4: detected capacity change from 0 to 32768 [ 97.948340][ T4286] loop1: detected capacity change from 0 to 32768 [ 97.978062][ T4287] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 97.978297][ T4286] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 97.980070][ T4287] CPU: 1 PID: 4287 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 97.982191][ T4286] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 97.984406][ T4287] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 97.984417][ T4287] Call trace: [ 97.984421][ T4287] dump_backtrace+0x0/0x43c [ 97.984437][ T4287] show_stack+0x2c/0x3c [ 97.984447][ T4287] __dump_stack+0x30/0x40 [ 97.991980][ T4285] syz-executor375 (4285): drop_caches: 2 [ 97.992905][ T4287] dump_stack_lvl+0xf8/0x160 [ 97.995490][ T4287] dump_stack+0x1c/0x5c [ 97.996612][ T4287] sysfs_create_dir_ns+0x22c/0x24c [ 97.997981][ T4287] kobject_add_internal+0x590/0xc54 [ 97.999335][ T4287] kobject_init_and_add+0x118/0x17c [ 98.000786][ T4287] gfs2_sys_fs_add+0x1dc/0x3d8 [ 98.002053][ T4287] gfs2_fill_super+0xdac/0x19e0 [ 98.003356][ T4287] get_tree_bdev+0x358/0x544 [ 98.004548][ T4287] gfs2_get_tree+0x54/0x1b4 [ 98.005755][ T4287] vfs_get_tree+0x90/0x274 [ 98.006917][ T4287] do_new_mount+0x228/0x810 [ 98.008130][ T4287] path_mount+0x5b4/0x1000 [ 98.009297][ T4287] __arm64_sys_mount+0x514/0x5e4 [ 98.010583][ T4287] invoke_syscall+0x98/0x2b8 [ 98.011817][ T4287] el0_svc_common+0x138/0x258 [ 98.013094][ T4287] do_el0_svc+0x58/0x14c [ 98.014231][ T4287] el0_svc+0x78/0x1e0 [ 98.015291][ T4287] el0t_64_sync_handler+0xcc/0xe4 [ 98.016607][ T4287] el0t_64_sync+0x1a0/0x1a4 [ 98.033857][ T4286] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms executing program [ 98.043080][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 98.045013][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 98.105329][ T4287] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 98.109239][ T4287] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 98.153094][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 108ms [ 98.171677][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 98.173160][ T4286] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 98.180292][ T4288] loop0: detected capacity change from 0 to 32768 [ 98.192781][ T4286] syz-executor375 (4286): drop_caches: 2 executing program [ 98.278892][ T4288] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 98.281064][ T4288] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 98.315790][ T4288] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 98.325955][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 98.327743][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 98.435356][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 107ms [ 98.445916][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 98.446101][ T4287] syz-executor375 (4287): drop_caches: 2 [ 98.447412][ T4288] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 98.464674][ T4288] syz-executor375 (4288): drop_caches: 2 executing program [ 98.566487][ T4289] loop3: detected capacity change from 0 to 32768 executing program [ 98.627875][ T4289] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 98.630243][ T4289] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 98.638074][ T4289] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 98.643329][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 98.645115][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 98.727612][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 82ms [ 98.729735][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 98.731131][ T4289] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 98.748773][ T4289] syz-executor375 (4289): drop_caches: 2 executing program [ 98.988209][ T4290] loop2: detected capacity change from 0 to 32768 [ 99.037732][ T4290] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 99.039950][ T4290] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 99.063614][ T4290] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 99.074096][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 99.076073][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 99.157184][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 81ms [ 99.159395][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 99.182558][ T4290] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 99.195636][ T4290] syz-executor375 (4290): drop_caches: 2 [ 99.341754][ T4291] loop1: detected capacity change from 0 to 32768 executing program [ 99.388062][ T4291] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 99.390296][ T4291] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 99.415211][ T4291] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 99.426620][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 99.428513][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 99.470820][ T4293] loop0: detected capacity change from 0 to 32768 [ 99.514423][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 85ms [ 99.521640][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 99.523041][ T4291] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 99.530982][ T4291] syz-executor375 (4291): drop_caches: 2 executing program [ 99.622478][ T4292] loop4: detected capacity change from 0 to 32768 [ 99.643995][ T4293] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 99.648679][ T4293] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 99.680642][ T4293] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 99.683712][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 99.685606][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 99.743679][ T4294] loop3: detected capacity change from 0 to 32768 [ 99.753701][ T4292] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 99.756414][ T4292] CPU: 1 PID: 4292 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 99.758662][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 99.761233][ T4292] Call trace: [ 99.762032][ T4292] dump_backtrace+0x0/0x43c [ 99.763209][ T4292] show_stack+0x2c/0x3c [ 99.764247][ T4292] __dump_stack+0x30/0x40 [ 99.765307][ T4292] dump_stack_lvl+0xf8/0x160 [ 99.766511][ T4292] dump_stack+0x1c/0x5c [ 99.767583][ T4292] sysfs_create_dir_ns+0x22c/0x24c [ 99.768901][ T4292] kobject_add_internal+0x590/0xc54 [ 99.770261][ T4292] kobject_init_and_add+0x118/0x17c [ 99.771666][ T4292] gfs2_sys_fs_add+0x1dc/0x3d8 [ 99.772896][ T4292] gfs2_fill_super+0xdac/0x19e0 [ 99.774166][ T4292] get_tree_bdev+0x358/0x544 [ 99.775388][ T4292] gfs2_get_tree+0x54/0x1b4 [ 99.776636][ T4292] vfs_get_tree+0x90/0x274 [ 99.777761][ T4292] do_new_mount+0x228/0x810 [ 99.778940][ T4292] path_mount+0x5b4/0x1000 [ 99.780110][ T4292] __arm64_sys_mount+0x514/0x5e4 [ 99.781409][ T4292] invoke_syscall+0x98/0x2b8 [ 99.782617][ T4292] el0_svc_common+0x138/0x258 [ 99.783802][ T4292] do_el0_svc+0x58/0x14c [ 99.784892][ T4292] el0_svc+0x78/0x1e0 [ 99.785895][ T4292] el0t_64_sync_handler+0xcc/0xe4 [ 99.787187][ T4292] el0t_64_sync+0x1a0/0x1a4 [ 99.802328][ T4292] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 99.806733][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 121ms [ 99.809916][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 99.811325][ T4293] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 99.820749][ T4293] syz-executor375 (4293): drop_caches: 2 [ 99.823719][ T4292] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 99.826397][ T4292] syz-executor375 (4292): drop_caches: 2 executing program [ 99.890068][ T4294] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 99.892043][ T4294] CPU: 1 PID: 4294 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 99.894239][ T4294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 99.896808][ T4294] Call trace: [ 99.897658][ T4294] dump_backtrace+0x0/0x43c [ 99.898824][ T4294] show_stack+0x2c/0x3c [ 99.899920][ T4294] __dump_stack+0x30/0x40 [ 99.901046][ T4294] dump_stack_lvl+0xf8/0x160 [ 99.902251][ T4294] dump_stack+0x1c/0x5c [ 99.903324][ T4294] sysfs_create_dir_ns+0x22c/0x24c [ 99.904687][ T4294] kobject_add_internal+0x590/0xc54 [ 99.906053][ T4294] kobject_init_and_add+0x118/0x17c [ 99.907416][ T4294] gfs2_sys_fs_add+0x1dc/0x3d8 [ 99.908669][ T4294] gfs2_fill_super+0xdac/0x19e0 [ 99.909926][ T4294] get_tree_bdev+0x358/0x544 [ 99.911147][ T4294] gfs2_get_tree+0x54/0x1b4 [ 99.912335][ T4294] vfs_get_tree+0x90/0x274 [ 99.913476][ T4294] do_new_mount+0x228/0x810 [ 99.914624][ T4294] path_mount+0x5b4/0x1000 [ 99.915753][ T4294] __arm64_sys_mount+0x514/0x5e4 [ 99.917045][ T4294] invoke_syscall+0x98/0x2b8 [ 99.918258][ T4294] el0_svc_common+0x138/0x258 [ 99.919441][ T4294] do_el0_svc+0x58/0x14c [ 99.920588][ T4294] el0_svc+0x78/0x1e0 [ 99.921652][ T4294] el0t_64_sync_handler+0xcc/0xe4 [ 99.922994][ T4294] el0t_64_sync+0x1a0/0x1a4 executing program [ 99.927320][ T4294] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 99.930686][ T4294] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 99.933810][ T4294] syz-executor375 (4294): drop_caches: 2 executing program [ 100.272549][ T4296] loop1: detected capacity change from 0 to 32768 [ 100.317926][ T4296] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 100.320281][ T4296] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 100.328568][ T4296] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 100.338030][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 100.339899][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 100.413633][ T4295] loop2: detected capacity change from 0 to 32768 [ 100.434406][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 94ms [ 100.436615][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 100.438044][ T4296] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 100.449028][ T4296] syz-executor375 (4296): drop_caches: 2 [ 100.457960][ T4295] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 100.459896][ T4295] CPU: 0 PID: 4295 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 100.462197][ T4295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 100.464829][ T4295] Call trace: [ 100.465637][ T4295] dump_backtrace+0x0/0x43c [ 100.466834][ T4295] show_stack+0x2c/0x3c [ 100.467930][ T4295] __dump_stack+0x30/0x40 [ 100.469060][ T4295] dump_stack_lvl+0xf8/0x160 [ 100.470216][ T4295] dump_stack+0x1c/0x5c [ 100.471292][ T4295] sysfs_create_dir_ns+0x22c/0x24c [ 100.472633][ T4295] kobject_add_internal+0x590/0xc54 [ 100.473994][ T4295] kobject_init_and_add+0x118/0x17c [ 100.475364][ T4295] gfs2_sys_fs_add+0x1dc/0x3d8 [ 100.476665][ T4295] gfs2_fill_super+0xdac/0x19e0 [ 100.477925][ T4295] get_tree_bdev+0x358/0x544 [ 100.479127][ T4295] gfs2_get_tree+0x54/0x1b4 [ 100.480332][ T4295] vfs_get_tree+0x90/0x274 [ 100.481458][ T4295] do_new_mount+0x228/0x810 [ 100.482629][ T4295] path_mount+0x5b4/0x1000 [ 100.483783][ T4295] __arm64_sys_mount+0x514/0x5e4 [ 100.485101][ T4295] invoke_syscall+0x98/0x2b8 [ 100.486300][ T4295] el0_svc_common+0x138/0x258 [ 100.487499][ T4295] do_el0_svc+0x58/0x14c [ 100.488597][ T4295] el0_svc+0x78/0x1e0 [ 100.489597][ T4295] el0t_64_sync_handler+0xcc/0xe4 [ 100.490943][ T4295] el0t_64_sync+0x1a0/0x1a4 [ 100.545658][ T4295] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 100.549198][ T4295] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 100.632371][ T4297] loop4: detected capacity change from 0 to 32768 executing program [ 100.677067][ T4297] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 100.679292][ T4297] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 100.689208][ T4297] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 100.697355][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 100.699167][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 100.806156][ T4295] syz-executor375 (4295): drop_caches: 2 [ 100.818961][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 119ms [ 100.821214][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 100.822585][ T4297] gfs2: fsid=syz:syz.0: first mount done, others may mount executing program [ 100.854717][ T4297] syz-executor375 (4297): drop_caches: 2 [ 101.030377][ T4299] loop3: detected capacity change from 0 to 32768 [ 101.082526][ T4298] loop0: detected capacity change from 0 to 32768 [ 101.088168][ T4299] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 101.090454][ T4299] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 101.098703][ T4299] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 101.107298][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 101.109209][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 101.115742][ T4298] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 101.117736][ T4298] CPU: 1 PID: 4298 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 101.119914][ T4298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 101.122504][ T4298] Call trace: [ 101.123341][ T4298] dump_backtrace+0x0/0x43c [ 101.124579][ T4298] show_stack+0x2c/0x3c [ 101.125624][ T4298] __dump_stack+0x30/0x40 [ 101.126732][ T4298] dump_stack_lvl+0xf8/0x160 [ 101.127953][ T4298] dump_stack+0x1c/0x5c [ 101.129082][ T4298] sysfs_create_dir_ns+0x22c/0x24c [ 101.130412][ T4298] kobject_add_internal+0x590/0xc54 [ 101.131832][ T4298] kobject_init_and_add+0x118/0x17c [ 101.133167][ T4298] gfs2_sys_fs_add+0x1dc/0x3d8 [ 101.134382][ T4298] gfs2_fill_super+0xdac/0x19e0 [ 101.135610][ T4298] get_tree_bdev+0x358/0x544 [ 101.136789][ T4298] gfs2_get_tree+0x54/0x1b4 [ 101.137951][ T4298] vfs_get_tree+0x90/0x274 [ 101.139203][ T4298] do_new_mount+0x228/0x810 [ 101.140379][ T4298] path_mount+0x5b4/0x1000 [ 101.141559][ T4298] __arm64_sys_mount+0x514/0x5e4 [ 101.142869][ T4298] invoke_syscall+0x98/0x2b8 [ 101.144091][ T4298] el0_svc_common+0x138/0x258 [ 101.145319][ T4298] do_el0_svc+0x58/0x14c [ 101.146415][ T4298] el0_svc+0x78/0x1e0 [ 101.147425][ T4298] el0t_64_sync_handler+0xcc/0xe4 [ 101.148764][ T4298] el0t_64_sync+0x1a0/0x1a4 executing program [ 101.222258][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 113ms [ 101.224456][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 101.244876][ T4299] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 101.252207][ T4298] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 101.257239][ T4299] syz-executor375 (4299): drop_caches: 2 [ 101.285688][ T4298] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 101.290425][ T4298] syz-executor375 (4298): drop_caches: 2 executing program executing program [ 101.493814][ T4300] loop1: detected capacity change from 0 to 32768 [ 101.558759][ T4300] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 101.560942][ T4300] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 101.587336][ T4300] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 101.590509][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 101.592301][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 101.677832][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 85ms [ 101.695691][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 101.697096][ T4300] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 101.707441][ T4300] syz-executor375 (4300): drop_caches: 2 [ 101.715394][ T4301] loop2: detected capacity change from 0 to 32768 [ 101.730182][ T4301] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 101.732152][ T4301] CPU: 1 PID: 4301 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 101.734336][ T4301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 101.736977][ T4301] Call trace: [ 101.737804][ T4301] dump_backtrace+0x0/0x43c [ 101.738991][ T4301] show_stack+0x2c/0x3c [ 101.740087][ T4301] __dump_stack+0x30/0x40 [ 101.741212][ T4301] dump_stack_lvl+0xf8/0x160 [ 101.742430][ T4301] dump_stack+0x1c/0x5c [ 101.743617][ T4301] sysfs_create_dir_ns+0x22c/0x24c [ 101.745010][ T4301] kobject_add_internal+0x590/0xc54 [ 101.746310][ T4301] kobject_init_and_add+0x118/0x17c [ 101.747654][ T4301] gfs2_sys_fs_add+0x1dc/0x3d8 [ 101.748911][ T4301] gfs2_fill_super+0xdac/0x19e0 [ 101.750169][ T4301] get_tree_bdev+0x358/0x544 [ 101.751373][ T4301] gfs2_get_tree+0x54/0x1b4 [ 101.752544][ T4301] vfs_get_tree+0x90/0x274 [ 101.753682][ T4301] do_new_mount+0x228/0x810 [ 101.754900][ T4301] path_mount+0x5b4/0x1000 [ 101.756102][ T4301] __arm64_sys_mount+0x514/0x5e4 [ 101.757463][ T4301] invoke_syscall+0x98/0x2b8 [ 101.758596][ T4301] el0_svc_common+0x138/0x258 [ 101.759830][ T4301] do_el0_svc+0x58/0x14c [ 101.760970][ T4301] el0_svc+0x78/0x1e0 [ 101.762037][ T4301] el0t_64_sync_handler+0xcc/0xe4 [ 101.763335][ T4301] el0t_64_sync+0x1a0/0x1a4 [ 101.825721][ T4301] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 101.829232][ T4301] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 102.075415][ T4301] syz-executor375 (4301): drop_caches: 2 [ 102.124334][ T4302] loop4: detected capacity change from 0 to 32768 executing program [ 102.149048][ T4302] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 102.151239][ T4302] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 102.180481][ T4303] loop0: detected capacity change from 0 to 32768 [ 102.186775][ T4302] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 102.189893][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 102.191749][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 102.263414][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 71ms [ 102.282130][ T4303] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 102.284209][ T4303] CPU: 0 PID: 4303 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 102.286513][ T4303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 102.289184][ T4303] Call trace: [ 102.290023][ T4303] dump_backtrace+0x0/0x43c [ 102.291238][ T4303] show_stack+0x2c/0x3c [ 102.292303][ T4303] __dump_stack+0x30/0x40 [ 102.293385][ T4303] dump_stack_lvl+0xf8/0x160 [ 102.294562][ T4303] dump_stack+0x1c/0x5c [ 102.295686][ T4303] sysfs_create_dir_ns+0x22c/0x24c [ 102.296986][ T4303] kobject_add_internal+0x590/0xc54 [ 102.298322][ T4303] kobject_init_and_add+0x118/0x17c [ 102.299630][ T4303] gfs2_sys_fs_add+0x1dc/0x3d8 [ 102.300866][ T4303] gfs2_fill_super+0xdac/0x19e0 [ 102.301468][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 102.302114][ T4303] get_tree_bdev+0x358/0x544 [ 102.303503][ T4302] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 102.304638][ T4303] gfs2_get_tree+0x54/0x1b4 [ 102.307650][ T4303] vfs_get_tree+0x90/0x274 [ 102.308806][ T4303] do_new_mount+0x228/0x810 [ 102.309966][ T4303] path_mount+0x5b4/0x1000 [ 102.311105][ T4303] __arm64_sys_mount+0x514/0x5e4 [ 102.312391][ T4303] invoke_syscall+0x98/0x2b8 [ 102.313597][ T4303] el0_svc_common+0x138/0x258 [ 102.314781][ T4303] do_el0_svc+0x58/0x14c [ 102.315882][ T4303] el0_svc+0x78/0x1e0 [ 102.316887][ T4303] el0t_64_sync_handler+0xcc/0xe4 [ 102.318200][ T4303] el0t_64_sync+0x1a0/0x1a4 [ 102.323688][ T4302] syz-executor375 (4302): drop_caches: 2 [ 102.355602][ T4303] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 102.359169][ T4303] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 102.542478][ T4304] loop3: detected capacity change from 0 to 32768 [ 102.549718][ T4303] syz-executor375 (4303): drop_caches: 2 [ 102.552808][ T4304] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 102.555005][ T4304] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 102.569232][ T4304] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 102.582994][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 102.584781][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 102.653338][ T4305] loop1: detected capacity change from 0 to 32768 [ 102.698918][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 114ms [ 102.701156][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 102.702725][ T4304] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 102.716121][ T4304] syz-executor375 (4304): drop_caches: 2 [ 102.717036][ T4305] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 102.719661][ T4305] CPU: 0 PID: 4305 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 102.721908][ T4305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 102.724550][ T4305] Call trace: [ 102.725415][ T4305] dump_backtrace+0x0/0x43c [ 102.726573][ T4305] show_stack+0x2c/0x3c [ 102.727653][ T4305] __dump_stack+0x30/0x40 [ 102.728791][ T4305] dump_stack_lvl+0xf8/0x160 [ 102.730001][ T4305] dump_stack+0x1c/0x5c [ 102.731095][ T4305] sysfs_create_dir_ns+0x22c/0x24c [ 102.732411][ T4305] kobject_add_internal+0x590/0xc54 [ 102.733776][ T4305] kobject_init_and_add+0x118/0x17c [ 102.735100][ T4305] gfs2_sys_fs_add+0x1dc/0x3d8 [ 102.736382][ T4305] gfs2_fill_super+0xdac/0x19e0 [ 102.737634][ T4305] get_tree_bdev+0x358/0x544 [ 102.738885][ T4305] gfs2_get_tree+0x54/0x1b4 [ 102.740053][ T4305] vfs_get_tree+0x90/0x274 [ 102.741222][ T4305] do_new_mount+0x228/0x810 [ 102.742395][ T4305] path_mount+0x5b4/0x1000 [ 102.743547][ T4305] __arm64_sys_mount+0x514/0x5e4 [ 102.744819][ T4305] invoke_syscall+0x98/0x2b8 [ 102.746048][ T4305] el0_svc_common+0x138/0x258 [ 102.747294][ T4305] do_el0_svc+0x58/0x14c [ 102.748424][ T4305] el0_svc+0x78/0x1e0 [ 102.749474][ T4305] el0t_64_sync_handler+0xcc/0xe4 [ 102.750793][ T4305] el0t_64_sync+0x1a0/0x1a4 [ 102.799078][ T4305] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 102.802679][ T4305] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 103.073664][ T4307] loop4: detected capacity change from 0 to 32768 [ 103.131253][ T4305] ================================================================== [ 103.133612][ T4305] BUG: KASAN: use-after-free in gfs2_qd_shrink_scan+0x56c/0x7b0 [ 103.135626][ T4305] Write of size 4 at addr ffff0000d75a0a70 by task syz-executor375/4305 [ 103.137762][ T4305] [ 103.138333][ T4305] CPU: 0 PID: 4305 Comm: syz-executor375 Not tainted 5.15.185-syzkaller #0 [ 103.140595][ T4305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 103.143266][ T4305] Call trace: [ 103.144119][ T4305] dump_backtrace+0x0/0x43c [ 103.145327][ T4305] show_stack+0x2c/0x3c [ 103.146410][ T4305] __dump_stack+0x30/0x40 [ 103.147529][ T4305] dump_stack_lvl+0xf8/0x160 [ 103.148746][ T4305] print_address_description+0x78/0x30c [ 103.150185][ T4305] kasan_report+0xec/0x15c [ 103.151288][ T4305] kasan_check_range+0x270/0x2b0 [ 103.152546][ T4305] __kasan_check_write+0x44/0x54 [ 103.152964][ T4306] loop2: detected capacity change from 0 to 32768 [ 103.153859][ T4305] gfs2_qd_shrink_scan+0x56c/0x7b0 [ 103.153901][ T4305] do_shrink_slab+0x4c0/0xfb8 [ 103.158040][ T4305] shrink_slab+0x190/0x6fc [ 103.159190][ T4305] drop_slab_node+0xcc/0x170 [ 103.160425][ T4305] drop_slab+0x84/0xf8 [ 103.161471][ T4305] drop_caches_sysctl_handler+0x16c/0x2fc [ 103.162934][ T4305] proc_sys_call_handler+0x3fc/0x69c [ 103.164320][ T4305] proc_sys_write+0x2c/0x3c [ 103.165482][ T4305] do_iter_readv_writev+0x3a0/0x4f8 [ 103.166887][ T4305] do_iter_write+0x1c4/0x670 [ 103.168096][ T4305] do_writev+0x1e0/0x380 [ 103.169172][ T4305] __arm64_sys_writev+0x80/0x94 [ 103.170435][ T4305] invoke_syscall+0x98/0x2b8 [ 103.171650][ T4305] el0_svc_common+0x138/0x258 [ 103.172948][ T4305] do_el0_svc+0x58/0x14c [ 103.174033][ T4305] el0_svc+0x78/0x1e0 [ 103.175087][ T4305] el0t_64_sync_handler+0xcc/0xe4 [ 103.176415][ T4305] el0t_64_sync+0x1a0/0x1a4 [ 103.177596][ T4305] [ 103.178198][ T4305] Allocated by task 4304: [ 103.179316][ T4305] __kasan_kmalloc+0xb0/0xf0 [ 103.180510][ T4305] kmem_cache_alloc_trace+0x274/0x3fc [ 103.181975][ T4305] gfs2_fill_super+0x118/0x19e0 [ 103.183303][ T4305] get_tree_bdev+0x358/0x544 [ 103.184561][ T4305] gfs2_get_tree+0x54/0x1b4 [ 103.185757][ T4305] vfs_get_tree+0x90/0x274 [ 103.186968][ T4305] do_new_mount+0x228/0x810 [ 103.188164][ T4305] path_mount+0x5b4/0x1000 [ 103.189334][ T4305] __arm64_sys_mount+0x514/0x5e4 [ 103.190628][ T4305] invoke_syscall+0x98/0x2b8 [ 103.191989][ T4305] el0_svc_common+0x138/0x258 [ 103.193230][ T4305] do_el0_svc+0x58/0x14c [ 103.194349][ T4305] el0_svc+0x78/0x1e0 [ 103.195394][ T4305] el0t_64_sync_handler+0xcc/0xe4 [ 103.196737][ T4305] el0t_64_sync+0x1a0/0x1a4 [ 103.198002][ T4305] [ 103.198597][ T4305] Freed by task 4035: [ 103.199629][ T4305] kasan_set_track+0x4c/0x84 [ 103.200817][ T4305] kasan_set_free_info+0x28/0x4c [ 103.202170][ T4305] ____kasan_slab_free+0x118/0x164 [ 103.203503][ T4305] __kasan_slab_free+0x18/0x28 [ 103.204728][ T4305] slab_free_freelist_hook+0x128/0x1e8 [ 103.206171][ T4305] kfree+0x170/0x40c [ 103.207212][ T4305] free_sbd+0x5c/0x6c [ 103.208235][ T4305] gfs2_put_super+0x63c/0x6bc [ 103.209397][ T4305] generic_shutdown_super+0x130/0x2f0 [ 103.210845][ T4305] kill_block_super+0x70/0xdc [ 103.212120][ T4305] gfs2_kill_sb+0xc0/0xd4 [ 103.213211][ T4305] deactivate_locked_super+0xb8/0x13c [ 103.214631][ T4305] deactivate_super+0xf8/0x118 [ 103.215869][ T4305] cleanup_mnt+0x3a4/0x458 [ 103.217039][ T4305] __cleanup_mnt+0x20/0x30 [ 103.218187][ T4305] task_work_run+0x12c/0x1e0 [ 103.219389][ T4305] do_notify_resume+0x24b4/0x3128 [ 103.220717][ T4305] el0_svc+0xf0/0x1e0 [ 103.221750][ T4305] el0t_64_sync_handler+0xcc/0xe4 [ 103.223086][ T4305] el0t_64_sync+0x1a0/0x1a4 [ 103.224241][ T4305] [ 103.224832][ T4305] The buggy address belongs to the object at ffff0000d75a0000 [ 103.224832][ T4305] which belongs to the cache kmalloc-8k of size 8192 [ 103.228629][ T4305] The buggy address is located 2672 bytes inside of [ 103.228629][ T4305] 8192-byte region [ffff0000d75a0000, ffff0000d75a2000) [ 103.232198][ T4305] The buggy address belongs to the page: [ 103.233636][ T4305] page:00000000590ddd11 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1175a0 [ 103.236353][ T4305] head:00000000590ddd11 order:3 compound_mapcount:0 compound_pincount:0 [ 103.238541][ T4305] flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) [ 103.240623][ T4305] raw: 05ffc00000010200 0000000000000000 0000000100000001 ffff0000c0002c00 [ 103.242871][ T4305] raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000 [ 103.245111][ T4305] page dumped because: kasan: bad access detected [ 103.246763][ T4305] [ 103.247380][ T4305] Memory state around the buggy address: [ 103.248825][ T4305] ffff0000d75a0900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 103.250898][ T4305] ffff0000d75a0980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 103.252994][ T4305] >ffff0000d75a0a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 103.255071][ T4305] ^ [ 103.257133][ T4305] ffff0000d75a0a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 103.259253][ T4305] ffff0000d75a0b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 103.261336][ T4305] ================================================================== [ 103.263456][ T4305] Disabling lock debugging due to kernel taint executing program [ 103.344150][ T4308] loop0: detected capacity change from 0 to 32768 [ 103.436245][ T4305] syz-executor375 (4305): drop_caches: 2 [ 103.437147][ T4307] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 103.439994][ T4307] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 103.441847][ T4308] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 103.443792][ T4308] CPU: 1 PID: 4308 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 103.446429][ T4308] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 103.449132][ T4308] Call trace: [ 103.449978][ T4308] dump_backtrace+0x0/0x43c [ 103.451167][ T4308] show_stack+0x2c/0x3c [ 103.452251][ T4308] __dump_stack+0x30/0x40 [ 103.453396][ T4308] dump_stack_lvl+0xf8/0x160 [ 103.454594][ T4308] dump_stack+0x1c/0x5c [ 103.455679][ T4308] sysfs_create_dir_ns+0x22c/0x24c [ 103.457022][ T4308] kobject_add_internal+0x590/0xc54 [ 103.458335][ T4308] kobject_init_and_add+0x118/0x17c [ 103.459717][ T4308] gfs2_sys_fs_add+0x1dc/0x3d8 [ 103.460982][ T4308] gfs2_fill_super+0xdac/0x19e0 [ 103.462194][ T4308] get_tree_bdev+0x358/0x544 [ 103.463404][ T4308] gfs2_get_tree+0x54/0x1b4 [ 103.464588][ T4308] vfs_get_tree+0x90/0x274 [ 103.465728][ T4308] do_new_mount+0x228/0x810 [ 103.466912][ T4308] path_mount+0x5b4/0x1000 [ 103.468051][ T4308] __arm64_sys_mount+0x514/0x5e4 [ 103.469355][ T4308] invoke_syscall+0x98/0x2b8 [ 103.470555][ T4308] el0_svc_common+0x138/0x258 [ 103.471739][ T4308] do_el0_svc+0x58/0x14c [ 103.472899][ T4308] el0_svc+0x78/0x1e0 [ 103.473924][ T4308] el0t_64_sync_handler+0xcc/0xe4 [ 103.475261][ T4308] el0t_64_sync+0x1a0/0x1a4 executing program [ 103.488879][ T4306] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 103.490893][ T4306] CPU: 1 PID: 4306 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 103.493409][ T4306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 103.496034][ T4306] Call trace: [ 103.496896][ T4306] dump_backtrace+0x0/0x43c [ 103.498061][ T4306] show_stack+0x2c/0x3c [ 103.499109][ T4306] __dump_stack+0x30/0x40 [ 103.500196][ T4306] dump_stack_lvl+0xf8/0x160 [ 103.501247][ T4309] loop3: detected capacity change from 0 to 32768 [ 103.501431][ T4306] dump_stack+0x1c/0x5c [ 103.504234][ T4306] sysfs_create_dir_ns+0x22c/0x24c [ 103.505572][ T4306] kobject_add_internal+0x590/0xc54 [ 103.506916][ T4306] kobject_init_and_add+0x118/0x17c [ 103.508253][ T4306] gfs2_sys_fs_add+0x1dc/0x3d8 [ 103.509514][ T4306] gfs2_fill_super+0xdac/0x19e0 [ 103.510764][ T4306] get_tree_bdev+0x358/0x544 [ 103.511952][ T4306] gfs2_get_tree+0x54/0x1b4 [ 103.513099][ T4306] vfs_get_tree+0x90/0x274 [ 103.514224][ T4306] do_new_mount+0x228/0x810 [ 103.515377][ T4306] path_mount+0x5b4/0x1000 [ 103.516512][ T4306] __arm64_sys_mount+0x514/0x5e4 [ 103.517793][ T4306] invoke_syscall+0x98/0x2b8 [ 103.518988][ T4306] el0_svc_common+0x138/0x258 [ 103.520194][ T4306] do_el0_svc+0x58/0x14c [ 103.521309][ T4306] el0_svc+0x78/0x1e0 [ 103.522350][ T4306] el0t_64_sync_handler+0xcc/0xe4 [ 103.523693][ T4306] el0t_64_sync+0x1a0/0x1a4 [ 103.527662][ T4308] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 103.531005][ T4308] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 103.535655][ T4307] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 103.537339][ T4306] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 103.541354][ T4306] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 103.542279][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 103.544746][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 103.550801][ T4308] syz-executor375 (4308): drop_caches: 2 executing program [ 103.586841][ T4309] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 103.588893][ T4309] CPU: 0 PID: 4309 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 103.591508][ T4309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 103.594153][ T4309] Call trace: [ 103.594987][ T4309] dump_backtrace+0x0/0x43c [ 103.596156][ T4309] show_stack+0x2c/0x3c [ 103.597224][ T4309] __dump_stack+0x30/0x40 [ 103.598369][ T4309] dump_stack_lvl+0xf8/0x160 [ 103.599575][ T4309] dump_stack+0x1c/0x5c [ 103.600678][ T4309] sysfs_create_dir_ns+0x22c/0x24c [ 103.602050][ T4309] kobject_add_internal+0x590/0xc54 [ 103.603355][ T4309] kobject_init_and_add+0x118/0x17c [ 103.604692][ T4309] gfs2_sys_fs_add+0x1dc/0x3d8 [ 103.605981][ T4309] gfs2_fill_super+0xdac/0x19e0 [ 103.607232][ T4309] get_tree_bdev+0x358/0x544 [ 103.608427][ T4309] gfs2_get_tree+0x54/0x1b4 [ 103.609580][ T4309] vfs_get_tree+0x90/0x274 [ 103.610725][ T4309] do_new_mount+0x228/0x810 [ 103.611903][ T4309] path_mount+0x5b4/0x1000 [ 103.613051][ T4309] __arm64_sys_mount+0x514/0x5e4 [ 103.614342][ T4309] invoke_syscall+0x98/0x2b8 [ 103.615544][ T4309] el0_svc_common+0x138/0x258 [ 103.616754][ T4309] do_el0_svc+0x58/0x14c [ 103.617867][ T4309] el0_svc+0x78/0x1e0 [ 103.618902][ T4309] el0t_64_sync_handler+0xcc/0xe4 [ 103.620210][ T4309] el0t_64_sync+0x1a0/0x1a4 [ 103.629781][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 85ms [ 103.636594][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 103.638031][ T4307] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 103.645936][ T4307] syz-executor375 (4307): drop_caches: 2 [ 103.659275][ T4309] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 103.662959][ T4309] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 103.842372][ T4306] syz-executor375 (4306): drop_caches: 2 executing program [ 103.893168][ T4309] syz-executor375 (4309): drop_caches: 2 [ 103.925058][ T4310] loop1: detected capacity change from 0 to 32768 executing program [ 104.002557][ T4310] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 104.004825][ T4310] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 104.013006][ T4310] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 104.023249][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 104.025139][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 104.086074][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 60ms [ 104.088153][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 104.089523][ T4310] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 104.095462][ T4310] syz-executor375 (4310): drop_caches: 2 [ 104.124985][ T4311] loop0: detected capacity change from 0 to 32768 executing program [ 104.149303][ T4311] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 104.151501][ T4311] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 104.163865][ T4311] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 104.173920][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 104.175873][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 104.218801][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 42ms [ 104.220833][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 104.222188][ T4311] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 104.228736][ T4311] syz-executor375 (4311): drop_caches: 2 [ 104.234373][ T4312] loop4: detected capacity change from 0 to 32768 [ 104.319627][ T4312] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 104.321928][ T4312] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 104.326576][ T4312] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 104.344121][ T4077] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 104.346137][ T4077] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 104.402696][ T4314] loop3: detected capacity change from 0 to 32768 [ 104.405363][ T4077] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 59ms [ 104.413059][ T4077] gfs2: fsid=syz:syz.0: jid=0: Done [ 104.414521][ T4312] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 104.420565][ T4312] syz-executor375 (4312): drop_caches: 2 [ 104.451280][ T4314] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 104.453455][ T4314] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 104.477505][ T4314] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 104.480368][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 104.482178][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 104.505311][ T4313] loop2: detected capacity change from 0 to 32768 [ 104.549684][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 67ms [ 104.551805][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 104.553277][ T4314] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 104.563439][ T4313] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 104.565447][ T4313] CPU: 0 PID: 4313 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 104.568086][ T4313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 104.570748][ T4313] Call trace: [ 104.571575][ T4313] dump_backtrace+0x0/0x43c [ 104.572830][ T4313] show_stack+0x2c/0x3c [ 104.573958][ T4313] __dump_stack+0x30/0x40 [ 104.575070][ T4313] dump_stack_lvl+0xf8/0x160 [ 104.576393][ T4313] dump_stack+0x1c/0x5c [ 104.577589][ T4313] sysfs_create_dir_ns+0x22c/0x24c [ 104.578938][ T4313] kobject_add_internal+0x590/0xc54 [ 104.580360][ T4313] kobject_init_and_add+0x118/0x17c [ 104.581705][ T4313] gfs2_sys_fs_add+0x1dc/0x3d8 [ 104.582954][ T4313] gfs2_fill_super+0xdac/0x19e0 [ 104.584194][ T4313] get_tree_bdev+0x358/0x544 [ 104.585416][ T4313] gfs2_get_tree+0x54/0x1b4 [ 104.586593][ T4313] vfs_get_tree+0x90/0x274 [ 104.587735][ T4313] do_new_mount+0x228/0x810 [ 104.588989][ T4313] path_mount+0x5b4/0x1000 [ 104.590119][ T4313] __arm64_sys_mount+0x514/0x5e4 [ 104.591371][ T4313] invoke_syscall+0x98/0x2b8 [ 104.592574][ T4313] el0_svc_common+0x138/0x258 [ 104.593815][ T4313] do_el0_svc+0x58/0x14c [ 104.594970][ T4313] el0_svc+0x78/0x1e0 executing program [ 104.595979][ T4313] el0t_64_sync_handler+0xcc/0xe4 [ 104.597299][ T4313] el0t_64_sync+0x1a0/0x1a4 [ 104.607699][ T4314] syz-executor375 (4314): drop_caches: 2 executing program [ 104.679989][ T4313] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 104.682759][ T4315] loop1: detected capacity change from 0 to 32768 [ 104.683471][ T4313] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 104.762069][ T4315] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 104.764394][ T4315] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 104.781607][ T4315] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 104.789155][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 104.790982][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 104.846832][ T4313] syz-executor375 (4313): drop_caches: 2 [ 104.854575][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 63ms [ 104.860905][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 104.862367][ T4315] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 104.872432][ T4315] syz-executor375 (4315): drop_caches: 2 executing program [ 104.915267][ T4316] loop0: detected capacity change from 0 to 32768 executing program [ 104.977693][ T4316] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 104.979840][ T4316] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 104.983742][ T4316] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 104.996863][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 104.998729][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 105.039622][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 40ms [ 105.041797][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 105.053343][ T4316] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 105.062128][ T4316] syz-executor375 (4316): drop_caches: 2 executing program [ 105.273903][ T4317] loop4: detected capacity change from 0 to 32768 [ 105.294016][ T4320] loop1: detected capacity change from 0 to 32768 [ 105.316308][ T4317] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 105.318479][ T4317] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 105.322399][ T4317] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 105.331159][ T4320] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 105.333129][ T4320] CPU: 1 PID: 4320 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 105.335713][ T4320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 105.338364][ T4320] Call trace: [ 105.339198][ T4320] dump_backtrace+0x0/0x43c [ 105.340377][ T4320] show_stack+0x2c/0x3c [ 105.341449][ T4320] __dump_stack+0x30/0x40 [ 105.342579][ T4320] dump_stack_lvl+0xf8/0x160 [ 105.343775][ T4320] dump_stack+0x1c/0x5c [ 105.344898][ T4320] sysfs_create_dir_ns+0x22c/0x24c [ 105.346255][ T4320] kobject_add_internal+0x590/0xc54 [ 105.347581][ T4320] kobject_init_and_add+0x118/0x17c [ 105.348936][ T4320] gfs2_sys_fs_add+0x1dc/0x3d8 [ 105.350195][ T4320] gfs2_fill_super+0xdac/0x19e0 [ 105.351522][ T4320] get_tree_bdev+0x358/0x544 [ 105.352722][ T4320] gfs2_get_tree+0x54/0x1b4 [ 105.353887][ T4320] vfs_get_tree+0x90/0x274 [ 105.355043][ T4320] do_new_mount+0x228/0x810 [ 105.356249][ T4320] path_mount+0x5b4/0x1000 [ 105.357381][ T4320] __arm64_sys_mount+0x514/0x5e4 [ 105.358671][ T4320] invoke_syscall+0x98/0x2b8 [ 105.359828][ T4320] el0_svc_common+0x138/0x258 [ 105.361055][ T4320] do_el0_svc+0x58/0x14c [ 105.362179][ T4320] el0_svc+0x78/0x1e0 [ 105.363224][ T4320] el0t_64_sync_handler+0xcc/0xe4 [ 105.364556][ T4320] el0t_64_sync+0x1a0/0x1a4 [ 105.366603][ T4318] loop3: detected capacity change from 0 to 32768 [ 105.371280][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 105.373065][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 105.379577][ T4318] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 105.381586][ T4318] CPU: 0 PID: 4318 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 105.384155][ T4318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 105.386761][ T4318] Call trace: [ 105.387584][ T4318] dump_backtrace+0x0/0x43c [ 105.388747][ T4318] show_stack+0x2c/0x3c [ 105.389841][ T4318] __dump_stack+0x30/0x40 [ 105.390986][ T4318] dump_stack_lvl+0xf8/0x160 [ 105.392125][ T4318] dump_stack+0x1c/0x5c [ 105.393180][ T4318] sysfs_create_dir_ns+0x22c/0x24c [ 105.394513][ T4318] kobject_add_internal+0x590/0xc54 [ 105.395848][ T4318] kobject_init_and_add+0x118/0x17c [ 105.397205][ T4318] gfs2_sys_fs_add+0x1dc/0x3d8 [ 105.398442][ T4318] gfs2_fill_super+0xdac/0x19e0 [ 105.399682][ T4318] get_tree_bdev+0x358/0x544 [ 105.400462][ T4320] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 105.400863][ T4318] gfs2_get_tree+0x54/0x1b4 [ 105.404237][ T4320] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 105.405352][ T4318] vfs_get_tree+0x90/0x274 [ 105.408193][ T4318] do_new_mount+0x228/0x810 [ 105.409350][ T4318] path_mount+0x5b4/0x1000 [ 105.410509][ T4318] __arm64_sys_mount+0x514/0x5e4 [ 105.411783][ T4318] invoke_syscall+0x98/0x2b8 [ 105.412992][ T4318] el0_svc_common+0x138/0x258 [ 105.414172][ T4318] do_el0_svc+0x58/0x14c [ 105.415258][ T4318] el0_svc+0x78/0x1e0 [ 105.416272][ T4318] el0t_64_sync_handler+0xcc/0xe4 [ 105.417529][ T4318] el0t_64_sync+0x1a0/0x1a4 [ 105.466358][ T4318] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 105.466998][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 93ms [ 105.469847][ T4318] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 105.471836][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 105.474707][ T4317] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 105.483217][ T4317] syz-executor375 (4317): drop_caches: 2 [ 105.484886][ T4318] syz-executor375 (4318): drop_caches: 2 executing program executing program [ 105.550129][ T4319] loop2: detected capacity change from 0 to 32768 [ 105.574391][ T4320] syz-executor375 (4320): drop_caches: 2 executing program [ 105.615647][ T4319] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 105.617877][ T4319] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 105.634744][ T4319] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 105.641198][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 105.643040][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 105.694486][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 51ms [ 105.700866][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 105.705764][ T4319] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 105.711667][ T4319] syz-executor375 (4319): drop_caches: 2 executing program [ 105.804634][ T4321] loop0: detected capacity change from 0 to 32768 [ 105.856798][ T4321] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 105.859082][ T4321] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 105.874532][ T4321] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 105.886171][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 105.888075][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 105.974445][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 86ms [ 105.976639][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 105.978034][ T4321] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 105.983465][ T4321] syz-executor375 (4321): drop_caches: 2 executing program [ 106.121043][ T4323] loop4: detected capacity change from 0 to 32768 [ 106.121579][ T4324] loop1: detected capacity change from 0 to 32768 [ 106.179655][ T4324] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 106.180474][ T4323] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 106.181523][ T4324] CPU: 1 PID: 4324 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 106.183699][ T4323] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 106.186183][ T4324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 106.186194][ T4324] Call trace: [ 106.186197][ T4324] dump_backtrace+0x0/0x43c [ 106.186214][ T4324] show_stack+0x2c/0x3c [ 106.186224][ T4324] __dump_stack+0x30/0x40 [ 106.186233][ T4324] dump_stack_lvl+0xf8/0x160 [ 106.186242][ T4324] dump_stack+0x1c/0x5c [ 106.186250][ T4324] sysfs_create_dir_ns+0x22c/0x24c [ 106.186260][ T4324] kobject_add_internal+0x590/0xc54 [ 106.186270][ T4324] kobject_init_and_add+0x118/0x17c [ 106.186278][ T4324] gfs2_sys_fs_add+0x1dc/0x3d8 [ 106.186287][ T4324] gfs2_fill_super+0xdac/0x19e0 [ 106.186297][ T4324] get_tree_bdev+0x358/0x544 [ 106.186306][ T4324] gfs2_get_tree+0x54/0x1b4 [ 106.205172][ T4324] vfs_get_tree+0x90/0x274 [ 106.206275][ T4324] do_new_mount+0x228/0x810 [ 106.207351][ T4324] path_mount+0x5b4/0x1000 [ 106.208410][ T4324] __arm64_sys_mount+0x514/0x5e4 [ 106.209754][ T4324] invoke_syscall+0x98/0x2b8 [ 106.211006][ T4324] el0_svc_common+0x138/0x258 [ 106.211470][ T4322] loop3: detected capacity change from 0 to 32768 [ 106.212215][ T4324] do_el0_svc+0x58/0x14c [ 106.214936][ T4324] el0_svc+0x78/0x1e0 [ 106.215988][ T4324] el0t_64_sync_handler+0xcc/0xe4 [ 106.217365][ T4324] el0t_64_sync+0x1a0/0x1a4 [ 106.226587][ T4323] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 106.229393][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 106.231215][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 106.266639][ T4322] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 106.268700][ T4322] CPU: 0 PID: 4322 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 106.271281][ T4322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 106.273994][ T4322] Call trace: [ 106.274819][ T4322] dump_backtrace+0x0/0x43c [ 106.275999][ T4322] show_stack+0x2c/0x3c [ 106.277112][ T4322] __dump_stack+0x30/0x40 [ 106.278178][ T4322] dump_stack_lvl+0xf8/0x160 [ 106.279349][ T4322] dump_stack+0x1c/0x5c [ 106.280446][ T4322] sysfs_create_dir_ns+0x22c/0x24c [ 106.281783][ T4322] kobject_add_internal+0x590/0xc54 [ 106.283176][ T4322] kobject_init_and_add+0x118/0x17c [ 106.284559][ T4322] gfs2_sys_fs_add+0x1dc/0x3d8 [ 106.285771][ T4322] gfs2_fill_super+0xdac/0x19e0 [ 106.287052][ T4322] get_tree_bdev+0x358/0x544 [ 106.288284][ T4322] gfs2_get_tree+0x54/0x1b4 [ 106.289453][ T4322] vfs_get_tree+0x90/0x274 [ 106.290599][ T4322] do_new_mount+0x228/0x810 [ 106.291789][ T4322] path_mount+0x5b4/0x1000 [ 106.292959][ T4322] __arm64_sys_mount+0x514/0x5e4 [ 106.294283][ T4322] invoke_syscall+0x98/0x2b8 [ 106.295445][ T4322] el0_svc_common+0x138/0x258 [ 106.296664][ T4322] do_el0_svc+0x58/0x14c [ 106.297765][ T4322] el0_svc+0x78/0x1e0 [ 106.298857][ T4322] el0t_64_sync_handler+0xcc/0xe4 [ 106.299031][ T4324] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 106.300197][ T4322] el0t_64_sync+0x1a0/0x1a4 [ 106.304646][ T4324] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 106.315679][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 84ms [ 106.317805][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 106.319176][ T4323] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 106.319356][ T4324] syz-executor375 (4324): drop_caches: 2 [ 106.326183][ T4323] syz-executor375 (4323): drop_caches: 2 [ 106.339044][ T4322] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 106.342303][ T4322] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 106.344948][ T4322] syz-executor375 (4322): drop_caches: 2 executing program [ 106.405225][ T4325] loop2: detected capacity change from 0 to 32768 executing program [ 106.519748][ T4325] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 106.522032][ T4325] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 106.542171][ T4325] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 106.546570][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 106.548380][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 106.605634][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 57ms [ 106.607828][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 106.609217][ T4325] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 106.615537][ T4325] syz-executor375 (4325): drop_caches: 2 executing program [ 106.698081][ T4326] loop0: detected capacity change from 0 to 32768 [ 106.768328][ T4326] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 106.770654][ T4326] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 106.776425][ T4326] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 106.786649][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 106.788592][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 106.840716][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 52ms [ 106.842702][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 106.844109][ T4326] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 106.850642][ T4326] syz-executor375 (4326): drop_caches: 2 executing program [ 106.890341][ T4328] loop3: detected capacity change from 0 to 32768 [ 106.912038][ T4329] loop4: detected capacity change from 0 to 32768 [ 106.940269][ T4328] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 106.942541][ T4328] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 106.955404][ T4328] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 106.957418][ T4327] loop1: detected capacity change from 0 to 32768 [ 106.975218][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 106.977230][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 106.996535][ T4329] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 106.998540][ T4329] CPU: 0 PID: 4329 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 107.001199][ T4329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 107.003836][ T4329] Call trace: [ 107.004636][ T4329] dump_backtrace+0x0/0x43c [ 107.005785][ T4329] show_stack+0x2c/0x3c [ 107.006849][ T4329] __dump_stack+0x30/0x40 [ 107.008002][ T4329] dump_stack_lvl+0xf8/0x160 [ 107.009280][ T4329] dump_stack+0x1c/0x5c [ 107.010347][ T4329] sysfs_create_dir_ns+0x22c/0x24c [ 107.011671][ T4329] kobject_add_internal+0x590/0xc54 [ 107.013082][ T4329] kobject_init_and_add+0x118/0x17c [ 107.014424][ T4329] gfs2_sys_fs_add+0x1dc/0x3d8 [ 107.015656][ T4329] gfs2_fill_super+0xdac/0x19e0 [ 107.016944][ T4329] get_tree_bdev+0x358/0x544 [ 107.018122][ T4329] gfs2_get_tree+0x54/0x1b4 [ 107.019296][ T4329] vfs_get_tree+0x90/0x274 [ 107.020418][ T4329] do_new_mount+0x228/0x810 [ 107.021585][ T4329] path_mount+0x5b4/0x1000 [ 107.022696][ T4329] __arm64_sys_mount+0x514/0x5e4 [ 107.024001][ T4329] invoke_syscall+0x98/0x2b8 [ 107.025205][ T4329] el0_svc_common+0x138/0x258 [ 107.026437][ T4329] do_el0_svc+0x58/0x14c [ 107.027590][ T4329] el0_svc+0x78/0x1e0 [ 107.028651][ T4329] el0t_64_sync_handler+0xcc/0xe4 [ 107.029952][ T4329] el0t_64_sync+0x1a0/0x1a4 [ 107.045988][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 68ms [ 107.048082][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 107.049421][ T4328] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 107.055367][ T4328] syz-executor375 (4328): drop_caches: 2 [ 107.075534][ T4329] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 107.078974][ T4329] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 107.097764][ T4327] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 107.099969][ T4327] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 107.110465][ T4327] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 107.130363][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 107.132195][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 107.185233][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 53ms [ 107.195623][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 107.197023][ T4327] gfs2: fsid=syz:syz.0: first mount done, others may mount executing program [ 107.202986][ T4327] syz-executor375 (4327): drop_caches: 2 [ 107.221901][ T4329] syz-executor375 (4329): drop_caches: 2 executing program executing program [ 107.316990][ T4330] loop2: detected capacity change from 0 to 32768 [ 107.362074][ T4330] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 107.364244][ T4330] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 107.371665][ T4330] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 107.387518][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 107.389396][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 107.429099][ T4331] loop0: detected capacity change from 0 to 32768 [ 107.446983][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 57ms [ 107.449069][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 107.459660][ T4330] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 107.466087][ T4330] syz-executor375 (4330): drop_caches: 2 [ 107.506833][ T4331] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 107.508880][ T4331] CPU: 1 PID: 4331 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 107.511527][ T4331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 107.514167][ T4331] Call trace: [ 107.515032][ T4331] dump_backtrace+0x0/0x43c [ 107.516223][ T4331] show_stack+0x2c/0x3c [ 107.517332][ T4331] __dump_stack+0x30/0x40 [ 107.518501][ T4331] dump_stack_lvl+0xf8/0x160 [ 107.519694][ T4331] dump_stack+0x1c/0x5c [ 107.520753][ T4331] sysfs_create_dir_ns+0x22c/0x24c [ 107.522054][ T4331] kobject_add_internal+0x590/0xc54 [ 107.523406][ T4331] kobject_init_and_add+0x118/0x17c [ 107.524786][ T4331] gfs2_sys_fs_add+0x1dc/0x3d8 [ 107.526037][ T4331] gfs2_fill_super+0xdac/0x19e0 [ 107.527302][ T4331] get_tree_bdev+0x358/0x544 [ 107.528557][ T4331] gfs2_get_tree+0x54/0x1b4 [ 107.529724][ T4331] vfs_get_tree+0x90/0x274 [ 107.530922][ T4331] do_new_mount+0x228/0x810 [ 107.532100][ T4331] path_mount+0x5b4/0x1000 [ 107.533301][ T4331] __arm64_sys_mount+0x514/0x5e4 [ 107.534608][ T4331] invoke_syscall+0x98/0x2b8 [ 107.535786][ T4331] el0_svc_common+0x138/0x258 [ 107.536998][ T4331] do_el0_svc+0x58/0x14c [ 107.538074][ T4331] el0_svc+0x78/0x1e0 [ 107.539125][ T4331] el0t_64_sync_handler+0xcc/0xe4 [ 107.540460][ T4331] el0t_64_sync+0x1a0/0x1a4 executing program [ 107.695573][ T4331] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 107.699043][ T4331] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 107.720104][ T4331] syz-executor375 (4331): drop_caches: 2 executing program [ 107.786743][ T4333] loop1: detected capacity change from 0 to 32768 [ 107.790103][ T4332] loop3: detected capacity change from 0 to 32768 [ 107.806074][ T4332] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 107.808334][ T4332] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 107.820867][ T4334] loop4: detected capacity change from 0 to 32768 [ 107.824173][ T4332] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 107.826561][ T4334] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 107.826635][ T4333] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 107.830221][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 107.830506][ T4333] CPU: 0 PID: 4333 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 107.832252][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 107.834671][ T4333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 107.834682][ T4333] Call trace: [ 107.834685][ T4333] dump_backtrace+0x0/0x43c [ 107.834702][ T4333] show_stack+0x2c/0x3c [ 107.842070][ T4333] __dump_stack+0x30/0x40 [ 107.843214][ T4333] dump_stack_lvl+0xf8/0x160 [ 107.844469][ T4333] dump_stack+0x1c/0x5c [ 107.845638][ T4333] sysfs_create_dir_ns+0x22c/0x24c [ 107.846958][ T4333] kobject_add_internal+0x590/0xc54 [ 107.848308][ T4333] kobject_init_and_add+0x118/0x17c [ 107.849649][ T4333] gfs2_sys_fs_add+0x1dc/0x3d8 [ 107.850936][ T4333] gfs2_fill_super+0xdac/0x19e0 [ 107.852200][ T4333] get_tree_bdev+0x358/0x544 [ 107.853380][ T4333] gfs2_get_tree+0x54/0x1b4 [ 107.854526][ T4333] vfs_get_tree+0x90/0x274 [ 107.855689][ T4333] do_new_mount+0x228/0x810 [ 107.856902][ T4333] path_mount+0x5b4/0x1000 [ 107.858009][ T4333] __arm64_sys_mount+0x514/0x5e4 [ 107.859291][ T4333] invoke_syscall+0x98/0x2b8 [ 107.860457][ T4333] el0_svc_common+0x138/0x258 [ 107.861702][ T4333] do_el0_svc+0x58/0x14c [ 107.862767][ T4333] el0_svc+0x78/0x1e0 [ 107.863822][ T4333] el0t_64_sync_handler+0xcc/0xe4 [ 107.865174][ T4333] el0t_64_sync+0x1a0/0x1a4 [ 107.868174][ T4334] CPU: 0 PID: 4334 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 107.870713][ T4334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 107.873267][ T4334] Call trace: [ 107.874143][ T4334] dump_backtrace+0x0/0x43c [ 107.875259][ T4334] show_stack+0x2c/0x3c [ 107.876293][ T4334] __dump_stack+0x30/0x40 [ 107.877410][ T4334] dump_stack_lvl+0xf8/0x160 [ 107.878607][ T4334] dump_stack+0x1c/0x5c [ 107.879711][ T4334] sysfs_create_dir_ns+0x22c/0x24c [ 107.881039][ T4334] kobject_add_internal+0x590/0xc54 [ 107.882365][ T4334] kobject_init_and_add+0x118/0x17c [ 107.883734][ T4334] gfs2_sys_fs_add+0x1dc/0x3d8 [ 107.884979][ T4334] gfs2_fill_super+0xdac/0x19e0 [ 107.886250][ T4334] get_tree_bdev+0x358/0x544 [ 107.887494][ T4334] gfs2_get_tree+0x54/0x1b4 [ 107.888666][ T4334] vfs_get_tree+0x90/0x274 [ 107.889840][ T4334] do_new_mount+0x228/0x810 [ 107.891003][ T4334] path_mount+0x5b4/0x1000 [ 107.892160][ T4334] __arm64_sys_mount+0x514/0x5e4 [ 107.893440][ T4334] invoke_syscall+0x98/0x2b8 [ 107.894626][ T4334] el0_svc_common+0x138/0x258 [ 107.895830][ T4334] do_el0_svc+0x58/0x14c [ 107.896951][ T4334] el0_svc+0x78/0x1e0 [ 107.897964][ T4334] el0t_64_sync_handler+0xcc/0xe4 [ 107.899248][ T4334] el0t_64_sync+0x1a0/0x1a4 [ 107.900571][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 68ms [ 107.905716][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 107.907096][ T4332] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 107.912864][ T4332] syz-executor375 (4332): drop_caches: 2 executing program [ 107.982216][ T4334] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 108.002413][ T4334] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 108.004780][ T4334] syz-executor375 (4334): drop_caches: 2 [ 108.019826][ T4333] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 108.031994][ T4333] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 108.072953][ T4335] loop2: detected capacity change from 0 to 32768 [ 108.161172][ T4335] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 108.163328][ T4335] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 108.182392][ T4335] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 108.185254][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 108.187213][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 108.245978][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 58ms [ 108.247970][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 108.249372][ T4335] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 108.255946][ T4335] syz-executor375 (4335): drop_caches: 2 [ 108.260436][ T4333] syz-executor375 (4333): drop_caches: 2 executing program executing program [ 108.337434][ T4336] loop0: detected capacity change from 0 to 32768 [ 108.369438][ T4336] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 108.371563][ T4336] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 108.395648][ T4336] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 108.409781][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 108.411669][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 108.463141][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 51ms [ 108.469918][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 108.471313][ T4336] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 108.477434][ T4336] syz-executor375 (4336): drop_caches: 2 [ 108.505628][ T4337] loop3: detected capacity change from 0 to 32768 executing program [ 108.568346][ T4338] loop4: detected capacity change from 0 to 32768 [ 108.570768][ T4337] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 108.572959][ T4337] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 108.606400][ T4338] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 108.608272][ T4338] CPU: 0 PID: 4338 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 108.610884][ T4338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 108.613493][ T4338] Call trace: [ 108.614326][ T4338] dump_backtrace+0x0/0x43c [ 108.615449][ T4338] show_stack+0x2c/0x3c [ 108.616563][ T4338] __dump_stack+0x30/0x40 [ 108.617757][ T4338] dump_stack_lvl+0xf8/0x160 [ 108.618988][ T4338] dump_stack+0x1c/0x5c [ 108.620091][ T4338] sysfs_create_dir_ns+0x22c/0x24c [ 108.621403][ T4338] kobject_add_internal+0x590/0xc54 [ 108.622758][ T4338] kobject_init_and_add+0x118/0x17c [ 108.624122][ T4338] gfs2_sys_fs_add+0x1dc/0x3d8 [ 108.625388][ T4338] gfs2_fill_super+0xdac/0x19e0 [ 108.626651][ T4338] get_tree_bdev+0x358/0x544 [ 108.627873][ T4338] gfs2_get_tree+0x54/0x1b4 [ 108.629049][ T4338] vfs_get_tree+0x90/0x274 [ 108.630215][ T4338] do_new_mount+0x228/0x810 [ 108.631362][ T4338] path_mount+0x5b4/0x1000 [ 108.632489][ T4338] __arm64_sys_mount+0x514/0x5e4 [ 108.633768][ T4338] invoke_syscall+0x98/0x2b8 [ 108.634983][ T4338] el0_svc_common+0x138/0x258 [ 108.636218][ T4338] do_el0_svc+0x58/0x14c [ 108.637325][ T4338] el0_svc+0x78/0x1e0 [ 108.638376][ T4338] el0t_64_sync_handler+0xcc/0xe4 [ 108.639688][ T4338] el0t_64_sync+0x1a0/0x1a4 [ 108.646724][ T4337] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 108.655756][ T4338] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 108.659354][ T4338] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 108.663139][ T4338] syz-executor375 (4338): drop_caches: 2 [ 108.667735][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 108.669783][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 108.739943][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 70ms [ 108.742181][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 108.743533][ T4337] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 108.758261][ T4337] syz-executor375 (4337): drop_caches: 2 [ 108.772339][ T4340] loop1: detected capacity change from 0 to 32768 executing program [ 108.809349][ T4340] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 108.821723][ T4340] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 108.851219][ T4340] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 108.889465][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 108.891340][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 108.893711][ T4339] loop2: detected capacity change from 0 to 32768 [ 108.965245][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 73ms [ 108.974896][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 108.977028][ T4340] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 108.982517][ T4340] syz-executor375 (4340): drop_caches: 2 [ 108.989407][ T4339] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 108.991402][ T4339] CPU: 1 PID: 4339 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 108.994091][ T4339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 108.996701][ T4339] Call trace: [ 108.997553][ T4339] dump_backtrace+0x0/0x43c [ 108.998706][ T4339] show_stack+0x2c/0x3c [ 108.999815][ T4339] __dump_stack+0x30/0x40 [ 109.000945][ T4339] dump_stack_lvl+0xf8/0x160 [ 109.002146][ T4339] dump_stack+0x1c/0x5c [ 109.003224][ T4339] sysfs_create_dir_ns+0x22c/0x24c [ 109.004570][ T4339] kobject_add_internal+0x590/0xc54 [ 109.006017][ T4339] kobject_init_and_add+0x118/0x17c [ 109.007384][ T4339] gfs2_sys_fs_add+0x1dc/0x3d8 [ 109.008621][ T4339] gfs2_fill_super+0xdac/0x19e0 [ 109.009870][ T4339] get_tree_bdev+0x358/0x544 [ 109.011102][ T4339] gfs2_get_tree+0x54/0x1b4 [ 109.012285][ T4339] vfs_get_tree+0x90/0x274 [ 109.013449][ T4339] do_new_mount+0x228/0x810 [ 109.014598][ T4339] path_mount+0x5b4/0x1000 [ 109.015732][ T4339] __arm64_sys_mount+0x514/0x5e4 [ 109.017158][ T4339] invoke_syscall+0x98/0x2b8 [ 109.018365][ T4339] el0_svc_common+0x138/0x258 [ 109.019628][ T4339] do_el0_svc+0x58/0x14c [ 109.020754][ T4339] el0_svc+0x78/0x1e0 [ 109.021780][ T4339] el0t_64_sync_handler+0xcc/0xe4 [ 109.023136][ T4339] el0t_64_sync+0x1a0/0x1a4 executing program [ 109.055678][ T4339] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 109.059176][ T4339] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 109.166937][ T4342] loop4: detected capacity change from 0 to 32768 [ 109.207132][ T4342] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 109.209352][ T4342] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 109.220252][ T4342] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 109.226577][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 109.228413][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 109.239376][ T4339] syz-executor375 (4339): drop_caches: 2 executing program [ 109.303582][ T4341] loop0: detected capacity change from 0 to 32768 [ 109.308371][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 79ms [ 109.311284][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 109.312656][ T4342] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 109.318841][ T4342] syz-executor375 (4342): drop_caches: 2 [ 109.322640][ T4343] loop3: detected capacity change from 0 to 32768 [ 109.376048][ T4343] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 109.378228][ T4343] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... executing program [ 109.407801][ T4341] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 109.409702][ T4341] CPU: 0 PID: 4341 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 109.412210][ T4341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 109.414708][ T4341] Call trace: [ 109.415533][ T4341] dump_backtrace+0x0/0x43c [ 109.416700][ T4341] show_stack+0x2c/0x3c [ 109.417809][ T4341] __dump_stack+0x30/0x40 [ 109.418925][ T4341] dump_stack_lvl+0xf8/0x160 [ 109.420097][ T4341] dump_stack+0x1c/0x5c [ 109.421179][ T4341] sysfs_create_dir_ns+0x22c/0x24c [ 109.422510][ T4341] kobject_add_internal+0x590/0xc54 [ 109.423848][ T4341] kobject_init_and_add+0x118/0x17c [ 109.425209][ T4341] gfs2_sys_fs_add+0x1dc/0x3d8 [ 109.426438][ T4341] gfs2_fill_super+0xdac/0x19e0 [ 109.427706][ T4341] get_tree_bdev+0x358/0x544 [ 109.428901][ T4341] gfs2_get_tree+0x54/0x1b4 [ 109.430066][ T4341] vfs_get_tree+0x90/0x274 [ 109.431198][ T4341] do_new_mount+0x228/0x810 [ 109.432356][ T4341] path_mount+0x5b4/0x1000 [ 109.433485][ T4341] __arm64_sys_mount+0x514/0x5e4 [ 109.434794][ T4341] invoke_syscall+0x98/0x2b8 [ 109.435959][ T4341] el0_svc_common+0x138/0x258 [ 109.437178][ T4341] do_el0_svc+0x58/0x14c [ 109.438263][ T4343] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 109.438286][ T4341] el0_svc+0x78/0x1e0 [ 109.441010][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 109.441305][ T4341] el0t_64_sync_handler+0xcc/0xe4 [ 109.443035][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 109.444291][ T4341] el0t_64_sync+0x1a0/0x1a4 [ 109.482785][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 39ms [ 109.484892][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 109.486577][ T4343] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 109.495153][ T4343] syz-executor375 (4343): drop_caches: 2 executing program [ 109.533429][ T4341] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 109.555700][ T4341] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 109.558118][ T4341] syz-executor375 (4341): drop_caches: 2 [ 109.576955][ T4344] loop1: detected capacity change from 0 to 32768 executing program [ 109.618311][ T4344] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 109.620601][ T4344] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 109.643152][ T4344] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 109.646412][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 109.648296][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 109.720151][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 71ms [ 109.722371][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 109.723845][ T4344] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 109.730589][ T4344] syz-executor375 (4344): drop_caches: 2 executing program [ 109.885429][ T4345] loop2: detected capacity change from 0 to 32768 [ 109.929870][ T4345] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 109.932023][ T4345] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 109.944884][ T4345] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 109.955256][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 109.957390][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 110.039678][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 82ms [ 110.042359][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 110.043754][ T4345] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 110.052459][ T4345] syz-executor375 (4345): drop_caches: 2 executing program [ 110.094703][ T4346] loop4: detected capacity change from 0 to 32768 [ 110.126984][ T4347] loop3: detected capacity change from 0 to 32768 [ 110.160338][ T4347] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 110.162546][ T4347] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 110.170068][ T4347] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 110.176405][ T4045] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 110.178211][ T4045] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 110.196286][ T4346] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 110.198241][ T4346] CPU: 1 PID: 4346 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 110.200798][ T4346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 110.203501][ T4346] Call trace: [ 110.204338][ T4346] dump_backtrace+0x0/0x43c [ 110.205483][ T4346] show_stack+0x2c/0x3c [ 110.206601][ T4346] __dump_stack+0x30/0x40 [ 110.207827][ T4346] dump_stack_lvl+0xf8/0x160 [ 110.208983][ T4346] dump_stack+0x1c/0x5c [ 110.210063][ T4346] sysfs_create_dir_ns+0x22c/0x24c [ 110.211456][ T4346] kobject_add_internal+0x590/0xc54 [ 110.212798][ T4346] kobject_init_and_add+0x118/0x17c [ 110.214196][ T4346] gfs2_sys_fs_add+0x1dc/0x3d8 [ 110.215421][ T4346] gfs2_fill_super+0xdac/0x19e0 [ 110.216706][ T4346] get_tree_bdev+0x358/0x544 [ 110.217899][ T4346] gfs2_get_tree+0x54/0x1b4 [ 110.219093][ T4346] vfs_get_tree+0x90/0x274 [ 110.220277][ T4346] do_new_mount+0x228/0x810 [ 110.221448][ T4346] path_mount+0x5b4/0x1000 [ 110.222598][ T4346] __arm64_sys_mount+0x514/0x5e4 [ 110.223881][ T4346] invoke_syscall+0x98/0x2b8 [ 110.225119][ T4346] el0_svc_common+0x138/0x258 [ 110.226348][ T4346] do_el0_svc+0x58/0x14c [ 110.227478][ T4346] el0_svc+0x78/0x1e0 [ 110.228538][ T4346] el0t_64_sync_handler+0xcc/0xe4 [ 110.229848][ T4346] el0t_64_sync+0x1a0/0x1a4 [ 110.243300][ T4348] loop0: detected capacity change from 0 to 32768 [ 110.259957][ T4045] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 81ms [ 110.268075][ T4349] loop1: detected capacity change from 0 to 32768 [ 110.269148][ T4045] gfs2: fsid=syz:syz.0: jid=0: Done [ 110.271229][ T4347] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 110.277260][ T4347] syz-executor375 (4347): drop_caches: 2 [ 110.291701][ T4348] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 110.293724][ T4348] CPU: 0 PID: 4348 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 110.296409][ T4348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 110.299151][ T4348] Call trace: [ 110.299979][ T4348] dump_backtrace+0x0/0x43c [ 110.301200][ T4348] show_stack+0x2c/0x3c [ 110.302331][ T4348] __dump_stack+0x30/0x40 [ 110.303472][ T4348] dump_stack_lvl+0xf8/0x160 [ 110.304697][ T4348] dump_stack+0x1c/0x5c [ 110.305764][ T4348] sysfs_create_dir_ns+0x22c/0x24c [ 110.307101][ T4348] kobject_add_internal+0x590/0xc54 [ 110.308469][ T4348] kobject_init_and_add+0x118/0x17c [ 110.309811][ T4348] gfs2_sys_fs_add+0x1dc/0x3d8 [ 110.311054][ T4348] gfs2_fill_super+0xdac/0x19e0 [ 110.312340][ T4348] get_tree_bdev+0x358/0x544 [ 110.313514][ T4348] gfs2_get_tree+0x54/0x1b4 [ 110.314697][ T4348] vfs_get_tree+0x90/0x274 [ 110.315840][ T4348] do_new_mount+0x228/0x810 [ 110.316533][ T4346] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 110.317072][ T4348] path_mount+0x5b4/0x1000 [ 110.321673][ T4348] __arm64_sys_mount+0x514/0x5e4 [ 110.322951][ T4348] invoke_syscall+0x98/0x2b8 [ 110.324129][ T4348] el0_svc_common+0x138/0x258 [ 110.324547][ T4346] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 110.325419][ T4348] do_el0_svc+0x58/0x14c [ 110.328222][ T4348] el0_svc+0x78/0x1e0 [ 110.329264][ T4348] el0t_64_sync_handler+0xcc/0xe4 [ 110.330612][ T4348] el0t_64_sync+0x1a0/0x1a4 [ 110.333097][ T4346] syz-executor375 (4346): drop_caches: 2 [ 110.337671][ T4349] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 110.339794][ T4349] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... executing program [ 110.352461][ T4349] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 110.359054][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 110.360925][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 110.419860][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 58ms [ 110.424585][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 110.426316][ T4349] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 110.432895][ T4349] syz-executor375 (4349): drop_caches: 2 [ 110.475599][ T4348] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. executing program [ 110.479056][ T4348] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 110.481406][ T4348] syz-executor375 (4348): drop_caches: 2 executing program executing program [ 110.750357][ T4350] loop2: detected capacity change from 0 to 32768 [ 110.786984][ T4350] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 110.789198][ T4350] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 110.797354][ T4350] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 110.813297][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 110.815355][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 110.883331][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 67ms [ 110.898580][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 110.900092][ T4350] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 110.911409][ T4350] syz-executor375 (4350): drop_caches: 2 [ 110.943964][ T4351] loop4: detected capacity change from 0 to 32768 [ 110.965892][ T4351] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 110.975737][ T4351] CPU: 0 PID: 4351 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 110.978472][ T4351] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 110.981414][ T4351] Call trace: [ 110.982289][ T4351] dump_backtrace+0x0/0x43c [ 110.983518][ T4351] show_stack+0x2c/0x3c [ 110.984661][ T4351] __dump_stack+0x30/0x40 [ 110.985826][ T4351] dump_stack_lvl+0xf8/0x160 [ 110.987068][ T4351] dump_stack+0x1c/0x5c [ 110.988175][ T4351] sysfs_create_dir_ns+0x22c/0x24c [ 110.989579][ T4351] kobject_add_internal+0x590/0xc54 [ 110.990956][ T4351] kobject_init_and_add+0x118/0x17c [ 110.992341][ T4351] gfs2_sys_fs_add+0x1dc/0x3d8 [ 110.993592][ T4351] gfs2_fill_super+0xdac/0x19e0 [ 110.994866][ T4351] get_tree_bdev+0x358/0x544 [ 110.996142][ T4351] gfs2_get_tree+0x54/0x1b4 [ 110.997321][ T4351] vfs_get_tree+0x90/0x274 [ 110.998448][ T4351] do_new_mount+0x228/0x810 [ 110.999670][ T4351] path_mount+0x5b4/0x1000 [ 111.000878][ T4351] __arm64_sys_mount+0x514/0x5e4 [ 111.002241][ T4351] invoke_syscall+0x98/0x2b8 [ 111.003437][ T4351] el0_svc_common+0x138/0x258 [ 111.004708][ T4351] do_el0_svc+0x58/0x14c [ 111.005884][ T4351] el0_svc+0x78/0x1e0 [ 111.006365][ T4353] loop0: detected capacity change from 0 to 32768 [ 111.006982][ T4351] el0t_64_sync_handler+0xcc/0xe4 [ 111.009994][ T4351] el0t_64_sync+0x1a0/0x1a4 [ 111.037643][ T4353] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 111.039873][ T4353] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 111.048143][ T4353] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 111.058088][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 111.059927][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 111.102401][ T4352] loop3: detected capacity change from 0 to 32768 [ 111.106458][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 46ms [ 111.110040][ T4352] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' executing program [ 111.112067][ T4352] CPU: 0 PID: 4352 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 111.113731][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 111.114657][ T4352] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 111.116180][ T4353] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 111.118669][ T4352] Call trace: [ 111.118676][ T4352] dump_backtrace+0x0/0x43c [ 111.122635][ T4352] show_stack+0x2c/0x3c [ 111.123766][ T4352] __dump_stack+0x30/0x40 [ 111.124969][ T4352] dump_stack_lvl+0xf8/0x160 [ 111.126203][ T4352] dump_stack+0x1c/0x5c [ 111.127331][ T4352] sysfs_create_dir_ns+0x22c/0x24c [ 111.127871][ T4353] syz-executor375 (4353): drop_caches: 2 [ 111.128807][ T4352] kobject_add_internal+0x590/0xc54 [ 111.131908][ T4352] kobject_init_and_add+0x118/0x17c [ 111.133391][ T4352] gfs2_sys_fs_add+0x1dc/0x3d8 [ 111.134751][ T4352] gfs2_fill_super+0xdac/0x19e0 [ 111.136108][ T4352] get_tree_bdev+0x358/0x544 [ 111.137412][ T4352] gfs2_get_tree+0x54/0x1b4 [ 111.138749][ T4352] vfs_get_tree+0x90/0x274 [ 111.139987][ T4352] do_new_mount+0x228/0x810 [ 111.141197][ T4352] path_mount+0x5b4/0x1000 [ 111.142378][ T4352] __arm64_sys_mount+0x514/0x5e4 [ 111.143722][ T4352] invoke_syscall+0x98/0x2b8 [ 111.144989][ T4352] el0_svc_common+0x138/0x258 [ 111.146267][ T4352] do_el0_svc+0x58/0x14c [ 111.147448][ T4352] el0_svc+0x78/0x1e0 [ 111.148494][ T4352] el0t_64_sync_handler+0xcc/0xe4 [ 111.149850][ T4352] el0t_64_sync+0x1a0/0x1a4 [ 111.163204][ T4351] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 111.172219][ T4351] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 111.174763][ T4351] syz-executor375 (4351): drop_caches: 2 executing program executing program [ 111.230756][ T4354] loop1: detected capacity change from 0 to 32768 [ 111.232717][ T4352] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 111.237997][ T4352] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 111.241552][ T4352] syz-executor375 (4352): drop_caches: 2 executing program [ 111.279628][ T4354] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 111.281902][ T4354] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 111.288676][ T4354] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 111.300534][ T1960] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 111.302407][ T1960] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 111.362078][ T1960] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 59ms [ 111.372165][ T1960] gfs2: fsid=syz:syz.0: jid=0: Done [ 111.373564][ T4354] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 111.382808][ T4354] syz-executor375 (4354): drop_caches: 2 executing program [ 111.714810][ T4355] loop2: detected capacity change from 0 to 32768 [ 111.747120][ T4355] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 111.749296][ T4355] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 111.767592][ T4355] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 111.779423][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 111.781265][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 111.804110][ T4356] loop0: detected capacity change from 0 to 32768 [ 111.829526][ T4358] loop3: detected capacity change from 0 to 32768 [ 111.833750][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 52ms [ 111.839305][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 111.846662][ T4356] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 111.848611][ T4356] CPU: 0 PID: 4356 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 111.851234][ T4356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 111.853879][ T4356] Call trace: [ 111.854675][ T4356] dump_backtrace+0x0/0x43c [ 111.855827][ T4356] show_stack+0x2c/0x3c [ 111.856910][ T4356] __dump_stack+0x30/0x40 [ 111.858023][ T4356] dump_stack_lvl+0xf8/0x160 [ 111.859215][ T4356] dump_stack+0x1c/0x5c [ 111.860292][ T4356] sysfs_create_dir_ns+0x22c/0x24c [ 111.861610][ T4356] kobject_add_internal+0x590/0xc54 [ 111.862989][ T4356] kobject_init_and_add+0x118/0x17c [ 111.864334][ T4356] gfs2_sys_fs_add+0x1dc/0x3d8 [ 111.865601][ T4356] gfs2_fill_super+0xdac/0x19e0 [ 111.866889][ T4356] get_tree_bdev+0x358/0x544 [ 111.868170][ T4356] gfs2_get_tree+0x54/0x1b4 [ 111.869372][ T4356] vfs_get_tree+0x90/0x274 [ 111.870511][ T4356] do_new_mount+0x228/0x810 [ 111.871721][ T4356] path_mount+0x5b4/0x1000 [ 111.872883][ T4356] __arm64_sys_mount+0x514/0x5e4 [ 111.874179][ T4356] invoke_syscall+0x98/0x2b8 [ 111.875346][ T4356] el0_svc_common+0x138/0x258 [ 111.876633][ T4356] do_el0_svc+0x58/0x14c [ 111.877740][ T4356] el0_svc+0x78/0x1e0 [ 111.878771][ T4356] el0t_64_sync_handler+0xcc/0xe4 [ 111.880081][ T4356] el0t_64_sync+0x1a0/0x1a4 [ 111.883252][ T4355] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 111.886999][ T4358] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 111.888957][ T4358] CPU: 1 PID: 4358 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 111.890481][ T4355] syz-executor375 (4355): drop_caches: 2 [ 111.891535][ T4358] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 111.895612][ T4358] Call trace: [ 111.896481][ T4358] dump_backtrace+0x0/0x43c [ 111.897699][ T4358] show_stack+0x2c/0x3c [ 111.898772][ T4358] __dump_stack+0x30/0x40 [ 111.899915][ T4358] dump_stack_lvl+0xf8/0x160 [ 111.901098][ T4358] dump_stack+0x1c/0x5c [ 111.902203][ T4358] sysfs_create_dir_ns+0x22c/0x24c [ 111.903547][ T4358] kobject_add_internal+0x590/0xc54 [ 111.904943][ T4358] kobject_init_and_add+0x118/0x17c [ 111.906303][ T4358] gfs2_sys_fs_add+0x1dc/0x3d8 [ 111.907613][ T4358] gfs2_fill_super+0xdac/0x19e0 [ 111.908859][ T4358] get_tree_bdev+0x358/0x544 [ 111.910081][ T4358] gfs2_get_tree+0x54/0x1b4 [ 111.911266][ T4358] vfs_get_tree+0x90/0x274 [ 111.912429][ T4358] do_new_mount+0x228/0x810 [ 111.913610][ T4358] path_mount+0x5b4/0x1000 [ 111.914797][ T4358] __arm64_sys_mount+0x514/0x5e4 [ 111.916133][ T4358] invoke_syscall+0x98/0x2b8 [ 111.917324][ T4358] el0_svc_common+0x138/0x258 [ 111.918520][ T4358] do_el0_svc+0x58/0x14c [ 111.919676][ T4358] el0_svc+0x78/0x1e0 [ 111.920723][ T4358] el0t_64_sync_handler+0xcc/0xe4 [ 111.922068][ T4358] el0t_64_sync+0x1a0/0x1a4 [ 111.923558][ T4356] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 111.927600][ T4356] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 111.934976][ T4357] loop4: detected capacity change from 0 to 32768 executing program [ 111.955811][ T4358] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 111.960340][ T4358] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 111.997007][ T4359] loop1: detected capacity change from 0 to 32768 [ 111.997232][ T4357] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 112.001134][ T4357] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 112.035096][ T4357] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 112.047177][ T4359] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 112.049133][ T4359] CPU: 1 PID: 4359 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 112.051734][ T4359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 112.054404][ T4359] Call trace: [ 112.055290][ T4359] dump_backtrace+0x0/0x43c [ 112.056444][ T4359] show_stack+0x2c/0x3c [ 112.057535][ T4359] __dump_stack+0x30/0x40 [ 112.058642][ T4359] dump_stack_lvl+0xf8/0x160 [ 112.059826][ T4359] dump_stack+0x1c/0x5c [ 112.060902][ T4359] sysfs_create_dir_ns+0x22c/0x24c [ 112.062237][ T4359] kobject_add_internal+0x590/0xc54 [ 112.063618][ T4359] kobject_init_and_add+0x118/0x17c [ 112.065016][ T4359] gfs2_sys_fs_add+0x1dc/0x3d8 [ 112.066261][ T4359] gfs2_fill_super+0xdac/0x19e0 [ 112.067592][ T4359] get_tree_bdev+0x358/0x544 [ 112.068734][ T4359] gfs2_get_tree+0x54/0x1b4 [ 112.069910][ T4359] vfs_get_tree+0x90/0x274 [ 112.071045][ T4359] do_new_mount+0x228/0x810 [ 112.072247][ T4359] path_mount+0x5b4/0x1000 [ 112.073409][ T4359] __arm64_sys_mount+0x514/0x5e4 [ 112.074764][ T4359] invoke_syscall+0x98/0x2b8 [ 112.076017][ T4359] el0_svc_common+0x138/0x258 [ 112.077257][ T4359] do_el0_svc+0x58/0x14c [ 112.078409][ T4359] el0_svc+0x78/0x1e0 [ 112.079475][ T4359] el0t_64_sync_handler+0xcc/0xe4 [ 112.080767][ T4359] el0t_64_sync+0x1a0/0x1a4 [ 112.096395][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 112.098302][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 112.117758][ T4356] syz-executor375 (4356): drop_caches: 2 [ 112.127194][ T4358] syz-executor375 (4358): drop_caches: 2 [ 112.129723][ T4359] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 112.133221][ T4359] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 112.148480][ T4359] syz-executor375 (4359): drop_caches: 2 executing program executing program [ 112.160671][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 62ms [ 112.162965][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 112.164403][ T4357] gfs2: fsid=syz:syz.0: first mount done, others may mount executing program [ 112.171120][ T4357] syz-executor375 (4357): drop_caches: 2 executing program [ 112.600318][ T4361] loop3: detected capacity change from 0 to 32768 [ 112.636527][ T4360] loop2: detected capacity change from 0 to 32768 [ 112.641156][ T4361] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 112.643372][ T4361] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 112.651297][ T4361] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 112.659115][ T4078] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 112.660958][ T4078] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 112.676391][ T4360] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 112.678362][ T4360] CPU: 1 PID: 4360 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 112.680949][ T4360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 112.683766][ T4360] Call trace: [ 112.684606][ T4360] dump_backtrace+0x0/0x43c [ 112.685786][ T4360] show_stack+0x2c/0x3c [ 112.686844][ T4360] __dump_stack+0x30/0x40 [ 112.688058][ T4360] dump_stack_lvl+0xf8/0x160 [ 112.689261][ T4360] dump_stack+0x1c/0x5c [ 112.690332][ T4360] sysfs_create_dir_ns+0x22c/0x24c [ 112.691638][ T4360] kobject_add_internal+0x590/0xc54 [ 112.692987][ T4360] kobject_init_and_add+0x118/0x17c [ 112.694349][ T4360] gfs2_sys_fs_add+0x1dc/0x3d8 [ 112.695602][ T4360] gfs2_fill_super+0xdac/0x19e0 [ 112.696843][ T4360] get_tree_bdev+0x358/0x544 [ 112.698029][ T4360] gfs2_get_tree+0x54/0x1b4 [ 112.699191][ T4360] vfs_get_tree+0x90/0x274 [ 112.700382][ T4360] do_new_mount+0x228/0x810 [ 112.701561][ T4360] path_mount+0x5b4/0x1000 [ 112.702734][ T4360] __arm64_sys_mount+0x514/0x5e4 [ 112.704024][ T4360] invoke_syscall+0x98/0x2b8 [ 112.705189][ T4360] el0_svc_common+0x138/0x258 [ 112.706402][ T4360] do_el0_svc+0x58/0x14c [ 112.707485][ T4360] el0_svc+0x78/0x1e0 [ 112.708483][ T4360] el0t_64_sync_handler+0xcc/0xe4 [ 112.709807][ T4360] el0t_64_sync+0x1a0/0x1a4 [ 112.726840][ T4078] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 65ms [ 112.728935][ T4078] gfs2: fsid=syz:syz.0: jid=0: Done [ 112.740845][ T4361] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 112.749769][ T4361] syz-executor375 (4361): drop_caches: 2 [ 112.764673][ T4362] loop0: detected capacity change from 0 to 32768 [ 112.785874][ T4360] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 112.789414][ T4360] gfs2: fsid=syz:syz: error -17 adding sysfs files executing program [ 112.802240][ T4363] loop1: detected capacity change from 0 to 32768 [ 112.803014][ T4360] syz-executor375 (4360): drop_caches: 2 [ 112.805144][ T4363] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 112.808256][ T4362] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 112.809990][ T4363] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 112.810273][ T4362] CPU: 0 PID: 4362 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 112.814702][ T4362] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 112.814980][ T4363] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 112.817357][ T4362] Call trace: [ 112.817364][ T4362] dump_backtrace+0x0/0x43c [ 112.817383][ T4362] show_stack+0x2c/0x3c [ 112.817392][ T4362] __dump_stack+0x30/0x40 [ 112.817402][ T4362] dump_stack_lvl+0xf8/0x160 [ 112.817410][ T4362] dump_stack+0x1c/0x5c [ 112.817418][ T4362] sysfs_create_dir_ns+0x22c/0x24c [ 112.817428][ T4362] kobject_add_internal+0x590/0xc54 [ 112.817438][ T4362] kobject_init_and_add+0x118/0x17c [ 112.817447][ T4362] gfs2_sys_fs_add+0x1dc/0x3d8 [ 112.817456][ T4362] gfs2_fill_super+0xdac/0x19e0 [ 112.827641][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 112.828683][ T4362] get_tree_bdev+0x358/0x544 [ 112.830070][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 112.831278][ T4362] gfs2_get_tree+0x54/0x1b4 [ 112.838457][ T4362] vfs_get_tree+0x90/0x274 [ 112.839626][ T4362] do_new_mount+0x228/0x810 [ 112.840798][ T4362] path_mount+0x5b4/0x1000 [ 112.841948][ T4362] __arm64_sys_mount+0x514/0x5e4 [ 112.843235][ T4362] invoke_syscall+0x98/0x2b8 [ 112.844425][ T4362] el0_svc_common+0x138/0x258 [ 112.845667][ T4362] do_el0_svc+0x58/0x14c [ 112.846798][ T4362] el0_svc+0x78/0x1e0 [ 112.847850][ T4362] el0t_64_sync_handler+0xcc/0xe4 [ 112.849174][ T4362] el0t_64_sync+0x1a0/0x1a4 [ 112.855378][ T4364] loop4: detected capacity change from 0 to 32768 [ 112.871377][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms executing program [ 112.879640][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 112.881106][ T4363] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 112.887518][ T4363] syz-executor375 (4363): drop_caches: 2 [ 112.898788][ T4364] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 112.900742][ T4364] CPU: 1 PID: 4364 Comm: syz-executor375 Tainted: G B 5.15.185-syzkaller #0 [ 112.903395][ T4364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 112.906017][ T4364] Call trace: [ 112.906846][ T4364] dump_backtrace+0x0/0x43c [ 112.908000][ T4364] show_stack+0x2c/0x3c [ 112.909060][ T4364] __dump_stack+0x30/0x40 [ 112.910204][ T4364] dump_stack_lvl+0xf8/0x160 [ 112.911354][ T4364] dump_stack+0x1c/0x5c [ 112.912434][ T4364] sysfs_create_dir_ns+0x22c/0x24c [ 112.913748][ T4364] kobject_add_internal+0x590/0xc54 [ 112.915098][ T4364] kobject_init_and_add+0x118/0x17c [ 112.916458][ T4364] gfs2_sys_fs_add+0x1dc/0x3d8 [ 112.917723][ T4364] gfs2_fill_super+0xdac/0x19e0 [ 112.919047][ T4364] get_tree_bdev+0x358/0x544 [ 112.920233][ T4364] gfs2_get_tree+0x54/0x1b4 [ 112.921431][ T4364] vfs_get_tree+0x90/0x274 [ 112.922574][ T4364] do_new_mount+0x228/0x810 [ 112.923805][ T4364] path_mount+0x5b4/0x1000 [ 112.924991][ T4364] __arm64_sys_mount+0x514/0x5e4 [ 112.926218][ T4364] invoke_syscall+0x98/0x2b8 [ 112.927429][ T4364] el0_svc_common+0x138/0x258 [ 112.928659][ T4364] do_el0_svc+0x58/0x14c [ 112.929814][ T4364] el0_svc+0x78/0x1e0 [ 112.930848][ T4364] el0t_64_sync_handler+0xcc/0xe4 [ 112.932175][ T4364] el0t_64_sync+0x1a0/0x1a4 executing program [ 112.948104][ T4362] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 112.951488][ T4362] gfs2: fsid=syz:syz: error -17 adding sysfs files [ 112.954267][ T4362] syz-executor375 (4362): drop_caches: 2 executing program [ 113.130715][ T4364] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. [ 113.134353][ T4364] gfs2: fsid=syz:syz: error -17 adding sysfs files