fs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 81.860485][ T4379] CPU: 1 PID: 4379 Comm: syz.1.28 Not tainted syzkaller #0
[ 81.867800][ T4379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 81.877880][ T4379] Call Trace:
[ 81.881182][ T4379]
[ 81.884128][ T4379] dump_stack_lvl+0x188/0x250
[ 81.888949][ T4379] ? show_regs_print_info+0x20/0x20
[ 81.894373][ T4379] ? load_image+0x400/0x400
[ 81.899173][ T4379] sysfs_create_dir_ns+0x26a/0x290
[ 81.904779][ T4379] ? sysfs_warn_dup+0xa0/0xa0
[ 81.909504][ T4379] ? do_raw_spin_unlock+0x11d/0x230
[ 81.914736][ T4379] kobject_add_internal+0x6e0/0xd90
[ 81.919976][ T4379] kobject_init_and_add+0x128/0x190
[ 81.925209][ T4379] ? lockdep_softirqs_off+0x430/0x430
[ 81.930641][ T4379] ? kobject_add+0x230/0x230
[ 81.935274][ T4379] ? __init_swait_queue_head+0xa5/0x150
[ 81.940856][ T4379] gfs2_sys_fs_add+0x24f/0x4b0
[ 81.945734][ T4379] ? gfs2_recover_set+0x240/0x240
[ 81.950974][ T4379] ? snprintf+0xe5/0x140
[ 81.955364][ T4379] ? __free_pages+0x95/0x1a0
[ 81.960076][ T4379] ? vscnprintf+0x80/0x80
[ 81.964441][ T4379] gfs2_fill_super+0x120f/0x1f00
[ 81.969509][ T4379] ? gfs2_reconfigure+0xd30/0xd30
[ 81.974834][ T4379] ? sb_set_blocksize+0xa5/0xe0
[ 81.979704][ T4379] get_tree_bdev+0x3f1/0x610
[ 81.984322][ T4379] ? gfs2_reconfigure+0xd30/0xd30
[ 81.989386][ T4379] gfs2_get_tree+0x4d/0x1e0
[ 81.994022][ T4379] vfs_get_tree+0x88/0x270
[ 81.998470][ T4379] do_new_mount+0x24a/0xa40
[ 82.003283][ T4379] __se_sys_mount+0x2e3/0x3d0
[ 82.008257][ T4379] ? __x64_sys_mount+0xc0/0xc0
[ 82.013237][ T4379] ? lockdep_hardirqs_on+0x94/0x140
[ 82.018554][ T4379] ? __x64_sys_mount+0x1c/0xc0
[ 82.023355][ T4379] do_syscall_64+0x4c/0xa0
[ 82.027813][ T4379] ? clear_bhb_loop+0x30/0x80
[ 82.032612][ T4379] ? clear_bhb_loop+0x30/0x80
[ 82.037530][ T4379] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 82.043720][ T4379] RIP: 0033:0x7f8eb29c4a8a
[ 82.048163][ T4379] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 82.067978][ T4379] RSP: 002b:00007f8eb2024e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 82.076447][ T4379] RAX: ffffffffffffffda RBX: 00007f8eb2024ee0 RCX: 00007f8eb29c4a8a
[ 82.084716][ T4379] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eb2024ea0
[ 82.092806][ T4379] RBP: 00002000000124c0 R08: 00007f8eb2024ee0 R09: 0000000000000000
[ 82.100903][ T4379] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 82.109081][ T4379] R13: 00007f8eb2024ea0 R14: 0000000000012616 R15: 0000200000000140
[ 82.117210][ T4379]
[ 82.124416][ T4379] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 82.138024][ T4379] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 82.138884][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 82.265693][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready
[ 82.274645][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 82.283901][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
[ 82.294903][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 82.303657][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
[ 82.315818][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 82.397900][ T4377] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 82.416656][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 82.465696][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 82.521364][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 82.556137][ T4390] loop1: detected capacity change from 0 to 32768
[ 82.572686][ T4302] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 82.593687][ T4296] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 82.625482][ T4302] CPU: 0 PID: 4302 Comm: syz-executor Not tainted syzkaller #0
[ 82.625921][ T4296] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 82.633257][ T4302] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 82.633271][ T4302] Call Trace:
[ 82.633279][ T4302]
[ 82.633288][ T4302] dump_stack_lvl+0x188/0x250
[ 82.633315][ T4302] ? show_regs_print_info+0x20/0x20
[ 82.633340][ T4302] ? load_image+0x400/0x400
[ 82.633365][ T4302] ? do_raw_spin_unlock+0x11d/0x230
[ 82.633391][ T4302] gfs2_assert_warn_i+0x18f/0x2c0
[ 82.633421][ T4302] gfs2_quota_cleanup+0x4b4/0x6a0
[ 82.633455][ T4302] gfs2_make_fs_ro+0x523/0x620
[ 82.633479][ T4302] ? gfs2_dinode_out+0xb00/0xb00
[ 82.633499][ T4302] ? gfs2_put_super+0x189/0x7d0
[ 82.633524][ T4302] ? __lock_acquire+0x7d10/0x7d10
[ 82.633548][ T4302] ? __rwlock_init+0x140/0x140
[ 82.633567][ T4302] ? hook_inode_free_security+0xa0/0xa0
[ 82.633591][ T4302] ? do_raw_spin_unlock+0x11d/0x230
[ 82.633616][ T4302] gfs2_put_super+0x1d2/0x7d0
[ 82.633640][ T4302] ? gfs2_evict_inode+0x1240/0x1240
[ 82.633659][ T4302] generic_shutdown_super+0x130/0x300
[ 82.633683][ T4302] kill_block_super+0x7c/0xe0
[ 82.633705][ T4302] deactivate_locked_super+0x93/0xf0
[ 82.633729][ T4302] cleanup_mnt+0x42d/0x4e0
[ 82.633752][ T4302] ? lockdep_hardirqs_on+0x94/0x140
[ 82.694821][ T4296] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 82.699224][ T4302] task_work_run+0x125/0x1a0
[ 82.704079][ T4296] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 82.709198][ T4302] exit_to_user_mode_loop+0x10f/0x130
[ 82.709222][ T4302] exit_to_user_mode_prepare+0xee/0x180
[ 82.791177][ T4307] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 82.793341][ T4302] syscall_exit_to_user_mode+0x16/0x40
[ 82.805753][ T4302] do_syscall_64+0x58/0xa0
[ 82.810284][ T4302] ? clear_bhb_loop+0x30/0x80
[ 82.815072][ T4302] ? clear_bhb_loop+0x30/0x80
[ 82.819874][ T4302] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 82.825896][ T4302] RIP: 0033:0x7f62e47f7a57
[ 82.830433][ T4302] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 82.850410][ T4302] RSP: 002b:00007fff1a8e4ad8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 82.858852][ T4302] RAX: 0000000000000000 RBX: 00007f62e488c048 RCX: 00007f62e47f7a57
[ 82.866941][ T4302] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1a8e4b90
[ 82.868982][ T4307] device veth0_vlan entered promiscuous mode
[ 82.875203][ T4302] RBP: 00007fff1a8e4b90 R08: 00007fff1a8e5b90 R09: 00000000ffffffff
[ 82.875223][ T4302] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1a8e5c20
[ 82.875236][ T4302] R13: 00007f62e488c048 R14: 0000000000013cf5 R15: 00007fff1a8e5c60
[ 82.875264][ T4302]
[ 82.926682][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 82.934226][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 82.963314][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 83.010580][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 83.020587][ T4390] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 83.028861][ T4390] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 83.045799][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
[ 83.054426][ T4390] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[ 83.064011][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 83.074531][ T4287] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 83.082746][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
[ 83.093075][ T4287] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 83.125491][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 83.198054][ T4308] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 83.367534][ T4287] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 274ms
[ 83.372885][ T4392] loop2: detected capacity change from 0 to 32768
[ 83.388628][ T4287] gfs2: fsid=syz:syz.0: jid=0: Done
[ 83.394062][ T4390] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 83.438963][ T4392] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 83.446757][ T4392] CPU: 0 PID: 4392 Comm: syz.2.30 Not tainted syzkaller #0
[ 83.454357][ T4392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 83.464528][ T4392] Call Trace:
[ 83.467840][ T4392]
[ 83.470796][ T4392] dump_stack_lvl+0x188/0x250
[ 83.475510][ T4392] ? show_regs_print_info+0x20/0x20
[ 83.480731][ T4392] ? load_image+0x400/0x400
[ 83.485264][ T4392] sysfs_create_dir_ns+0x26a/0x290
[ 83.490494][ T4392] ? sysfs_warn_dup+0xa0/0xa0
[ 83.495206][ T4392] ? do_raw_spin_unlock+0x11d/0x230
[ 83.500514][ T4392] kobject_add_internal+0x6e0/0xd90
[ 83.505740][ T4392] kobject_init_and_add+0x128/0x190
[ 83.510965][ T4392] ? lockdep_softirqs_off+0x430/0x430
[ 83.516499][ T4392] ? kobject_add+0x230/0x230
[ 83.521128][ T4392] ? __init_swait_queue_head+0xa5/0x150
[ 83.526903][ T4392] gfs2_sys_fs_add+0x24f/0x4b0
[ 83.531709][ T4392] ? gfs2_recover_set+0x240/0x240
[ 83.536756][ T4392] ? snprintf+0xe5/0x140
[ 83.541071][ T4392] ? __free_pages+0x95/0x1a0
[ 83.545810][ T4392] ? vscnprintf+0x80/0x80
[ 83.550275][ T4392] gfs2_fill_super+0x120f/0x1f00
[ 83.555451][ T4392] ? gfs2_reconfigure+0xd30/0xd30
[ 83.560705][ T4392] ? sb_set_blocksize+0xa5/0xe0
[ 83.565593][ T4392] get_tree_bdev+0x3f1/0x610
[ 83.570565][ T4392] ? gfs2_reconfigure+0xd30/0xd30
[ 83.575706][ T4392] gfs2_get_tree+0x4d/0x1e0
[ 83.580360][ T4392] vfs_get_tree+0x88/0x270
[ 83.584826][ T4392] do_new_mount+0x24a/0xa40
[ 83.589368][ T4392] __se_sys_mount+0x2e3/0x3d0
[ 83.594168][ T4392] ? __x64_sys_mount+0xc0/0xc0
[ 83.598959][ T4392] ? lockdep_hardirqs_on+0x94/0x140
[ 83.604187][ T4392] ? __x64_sys_mount+0x1c/0xc0
[ 83.608984][ T4392] do_syscall_64+0x4c/0xa0
[ 83.613449][ T4392] ? clear_bhb_loop+0x30/0x80
[ 83.618251][ T4392] ? clear_bhb_loop+0x30/0x80
[ 83.622961][ T4392] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 83.628985][ T4392] RIP: 0033:0x7f62e47f7a8a
[ 83.633435][ T4392] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 83.653327][ T4392] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 83.661890][ T4392] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 83.670126][ T4392] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 83.678129][ T4392] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 83.686126][ T4392] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 83.694227][ T4392] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 83.702333][ T4392]
[ 83.707094][ T4392] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 83.720825][ T4392] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 83.769236][ T4307] device veth1_vlan entered promiscuous mode
[ 83.786656][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 83.795338][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 83.799789][ T4390] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 84.025878][ T4304] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 84.113284][ T4304] CPU: 1 PID: 4304 Comm: syz-executor Not tainted syzkaller #0
[ 84.120900][ T4304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 84.131177][ T4304] Call Trace:
[ 84.134480][ T4304]
[ 84.137613][ T4304] dump_stack_lvl+0x188/0x250
[ 84.142346][ T4304] ? show_regs_print_info+0x20/0x20
[ 84.147685][ T4304] ? load_image+0x400/0x400
[ 84.152252][ T4304] ? do_raw_spin_unlock+0x11d/0x230
[ 84.157588][ T4304] gfs2_assert_warn_i+0x18f/0x2c0
[ 84.162666][ T4304] gfs2_quota_cleanup+0x4b4/0x6a0
[ 84.167833][ T4304] gfs2_make_fs_ro+0x523/0x620
[ 84.172798][ T4304] ? gfs2_dinode_out+0xb00/0xb00
[ 84.177777][ T4304] ? gfs2_put_super+0x189/0x7d0
[ 84.182672][ T4304] ? __lock_acquire+0x7d10/0x7d10
[ 84.187738][ T4304] ? __rwlock_init+0x140/0x140
[ 84.192541][ T4304] ? hook_inode_free_security+0xa0/0xa0
[ 84.198303][ T4304] ? do_raw_spin_unlock+0x11d/0x230
[ 84.203787][ T4304] gfs2_put_super+0x1d2/0x7d0
[ 84.208506][ T4304] ? gfs2_evict_inode+0x1240/0x1240
[ 84.213847][ T4304] generic_shutdown_super+0x130/0x300
[ 84.219353][ T4304] kill_block_super+0x7c/0xe0
[ 84.224157][ T4304] deactivate_locked_super+0x93/0xf0
[ 84.229478][ T4304] cleanup_mnt+0x42d/0x4e0
[ 84.234048][ T4304] ? lockdep_hardirqs_on+0x94/0x140
[ 84.239308][ T4304] task_work_run+0x125/0x1a0
[ 84.244032][ T4304] exit_to_user_mode_loop+0x10f/0x130
[ 84.249438][ T4304] exit_to_user_mode_prepare+0xee/0x180
[ 84.255098][ T4304] syscall_exit_to_user_mode+0x16/0x40
[ 84.260594][ T4304] do_syscall_64+0x58/0xa0
[ 84.265139][ T4304] ? clear_bhb_loop+0x30/0x80
[ 84.270035][ T4304] ? clear_bhb_loop+0x30/0x80
[ 84.274906][ T4304] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 84.281000][ T4304] RIP: 0033:0x7f8eb29c4a57
[ 84.285645][ T4304] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 84.293180][ T4399] loop2: detected capacity change from 0 to 32768
[ 84.305644][ T4304] RSP: 002b:00007ffda18309b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 84.305675][ T4304] RAX: 0000000000000000 RBX: 00007f8eb2a59048 RCX: 00007f8eb29c4a57
[ 84.305689][ T4304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda1830a70
[ 84.305701][ T4304] RBP: 00007ffda1830a70 R08: 00007ffda1831a70 R09: 00000000ffffffff
[ 84.305714][ T4304] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffda1831b00
[ 84.305727][ T4304] R13: 00007f8eb2a59048 R14: 0000000000014134 R15: 00007ffda1831b40
[ 84.355565][ T4399] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 84.361493][ T4304]
[ 84.372088][ T4399] CPU: 0 PID: 4399 Comm: syz.2.31 Not tainted syzkaller #0
[ 84.379501][ T4399] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 84.389770][ T4399] Call Trace:
[ 84.393168][ T4399]
[ 84.396142][ T4399] dump_stack_lvl+0x188/0x250
[ 84.400878][ T4399] ? show_regs_print_info+0x20/0x20
[ 84.406103][ T4399] ? load_image+0x400/0x400
[ 84.410641][ T4399] sysfs_create_dir_ns+0x26a/0x290
[ 84.415914][ T4399] ? sysfs_warn_dup+0xa0/0xa0
[ 84.420631][ T4399] ? do_raw_spin_unlock+0x11d/0x230
[ 84.425858][ T4399] kobject_add_internal+0x6e0/0xd90
[ 84.431094][ T4399] kobject_init_and_add+0x128/0x190
[ 84.436675][ T4399] ? lockdep_softirqs_off+0x430/0x430
[ 84.442153][ T4399] ? kobject_add+0x230/0x230
[ 84.447048][ T4399] ? __init_swait_queue_head+0xa5/0x150
[ 84.452699][ T4399] gfs2_sys_fs_add+0x24f/0x4b0
[ 84.457499][ T4399] ? gfs2_recover_set+0x240/0x240
[ 84.462646][ T4399] ? snprintf+0xe5/0x140
[ 84.466904][ T4399] ? __free_pages+0x95/0x1a0
[ 84.471617][ T4399] ? vscnprintf+0x80/0x80
[ 84.475975][ T4399] gfs2_fill_super+0x120f/0x1f00
[ 84.480940][ T4399] ? gfs2_reconfigure+0xd30/0xd30
[ 84.486335][ T4399] ? sb_set_blocksize+0xa5/0xe0
[ 84.491206][ T4399] get_tree_bdev+0x3f1/0x610
[ 84.495811][ T4399] ? gfs2_reconfigure+0xd30/0xd30
[ 84.500850][ T4399] gfs2_get_tree+0x4d/0x1e0
[ 84.505360][ T4399] vfs_get_tree+0x88/0x270
[ 84.509821][ T4399] do_new_mount+0x24a/0xa40
[ 84.514334][ T4399] __se_sys_mount+0x2e3/0x3d0
[ 84.519021][ T4399] ? __x64_sys_mount+0xc0/0xc0
[ 84.523795][ T4399] ? lockdep_hardirqs_on+0x94/0x140
[ 84.529002][ T4399] ? __x64_sys_mount+0x1c/0xc0
[ 84.534056][ T4399] do_syscall_64+0x4c/0xa0
[ 84.538483][ T4399] ? clear_bhb_loop+0x30/0x80
[ 84.543163][ T4399] ? clear_bhb_loop+0x30/0x80
[ 84.548128][ T4399] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 84.554070][ T4399] RIP: 0033:0x7f62e47f7a8a
[ 84.558534][ T4399] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 84.578236][ T4399] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 84.586745][ T4399] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 84.594872][ T4399] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 84.602848][ T4399] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 84.610924][ T4399] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 84.618928][ T4399] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 84.626931][ T4399]
[ 84.631034][ T4399] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 84.644455][ T4399] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 84.661663][ T4307] device veth0_macvtap entered promiscuous mode
[ 84.792906][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
[ 84.818168][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 84.864031][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 85.155998][ T3088] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 85.163877][ T3088] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 85.190249][ T4363] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 85.199581][ T4363] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 85.368141][ T4308] device veth0_vlan entered promiscuous mode
[ 85.377598][ T4405] loop1: detected capacity change from 0 to 32768
[ 85.410196][ T4307] device veth1_macvtap entered promiscuous mode
[ 85.428671][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 85.446014][ T4405] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 85.455408][ T4405] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 85.491555][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[ 85.516248][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
[ 85.539013][ T4405] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[ 85.548122][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 85.557128][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 85.565502][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 85.574238][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
[ 85.661513][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 85.766393][ T4408] loop2: detected capacity change from 0 to 32768
[ 85.776583][ T4408] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 85.784000][ T4408] CPU: 1 PID: 4408 Comm: syz.2.34 Not tainted syzkaller #0
[ 85.791492][ T4408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 85.792712][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 235ms
[ 85.801695][ T4408] Call Trace:
[ 85.801705][ T4408]
[ 85.801714][ T4408] dump_stack_lvl+0x188/0x250
[ 85.801742][ T4408] ? show_regs_print_info+0x20/0x20
[ 85.801765][ T4408] ? load_image+0x400/0x400
[ 85.801796][ T4408] sysfs_create_dir_ns+0x26a/0x290
[ 85.801820][ T4408] ? sysfs_warn_dup+0xa0/0xa0
[ 85.801843][ T4408] ? do_raw_spin_unlock+0x11d/0x230
[ 85.801869][ T4408] kobject_add_internal+0x6e0/0xd90
[ 85.801898][ T4408] kobject_init_and_add+0x128/0x190
[ 85.856164][ T4408] ? lockdep_softirqs_off+0x430/0x430
[ 85.861591][ T4408] ? kobject_add+0x230/0x230
[ 85.862146][ T7] gfs2: fsid=syz:syz.0: jid=0: Done
[ 85.866236][ T4408] ? __init_swait_queue_head+0xa5/0x150
[ 85.866269][ T4408] gfs2_sys_fs_add+0x24f/0x4b0
[ 85.866293][ T4408] ? gfs2_recover_set+0x240/0x240
[ 85.866314][ T4408] ? snprintf+0xe5/0x140
[ 85.866332][ T4408] ? __free_pages+0x95/0x1a0
[ 85.866358][ T4408] ? vscnprintf+0x80/0x80
[ 85.866387][ T4408] gfs2_fill_super+0x120f/0x1f00
[ 85.905177][ T4408] ? gfs2_reconfigure+0xd30/0xd30
[ 85.908725][ T4405] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 85.910255][ T4408] ? sb_set_blocksize+0xa5/0xe0
[ 85.910282][ T4408] get_tree_bdev+0x3f1/0x610
[ 85.910307][ T4408] ? gfs2_reconfigure+0xd30/0xd30
[ 85.910333][ T4408] gfs2_get_tree+0x4d/0x1e0
[ 85.910357][ T4408] vfs_get_tree+0x88/0x270
[ 85.910380][ T4408] do_new_mount+0x24a/0xa40
[ 85.910408][ T4408] __se_sys_mount+0x2e3/0x3d0
[ 85.910435][ T4408] ? __x64_sys_mount+0xc0/0xc0
[ 85.955978][ T4408] ? lockdep_hardirqs_on+0x94/0x140
[ 85.961307][ T4408] ? __x64_sys_mount+0x1c/0xc0
[ 85.966103][ T4408] do_syscall_64+0x4c/0xa0
[ 85.970799][ T4408] ? clear_bhb_loop+0x30/0x80
[ 85.975500][ T4408] ? clear_bhb_loop+0x30/0x80
[ 85.980411][ T4408] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 85.986451][ T4408] RIP: 0033:0x7f62e47f7a8a
[ 85.990908][ T4408] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 86.010764][ T4408] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 86.019216][ T4408] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 86.027351][ T4408] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 86.035359][ T4408] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 86.043538][ T4408] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 86.051630][ T4408] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 86.059653][ T4408]
[ 86.062814][ T4408] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 86.076604][ T4408] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 86.102297][ T4308] device veth1_vlan entered promiscuous mode
[ 86.118989][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 86.138480][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 86.175559][ T3088] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 86.212938][ T4405] gfs2: fsid=syz:syz.0: found 1 quota changes
2026/04/05 23:04:40 executed programs: 26
[ 86.337271][ T4304] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 86.552753][ T4412] loop2: detected capacity change from 0 to 32768
[ 86.591840][ T4304] CPU: 1 PID: 4304 Comm: syz-executor Not tainted syzkaller #0
[ 86.599546][ T4304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 86.609725][ T4304] Call Trace:
[ 86.613119][ T4304]
[ 86.616083][ T4304] dump_stack_lvl+0x188/0x250
[ 86.620804][ T4304] ? show_regs_print_info+0x20/0x20
[ 86.626040][ T4304] ? load_image+0x400/0x400
[ 86.630580][ T4304] ? do_raw_spin_unlock+0x11d/0x230
[ 86.636115][ T4304] gfs2_assert_warn_i+0x18f/0x2c0
[ 86.641261][ T4304] gfs2_quota_cleanup+0x4b4/0x6a0
[ 86.646323][ T4304] gfs2_make_fs_ro+0x523/0x620
[ 86.651114][ T4304] ? gfs2_dinode_out+0xb00/0xb00
[ 86.656077][ T4304] ? gfs2_put_super+0x189/0x7d0
[ 86.661049][ T4304] ? __lock_acquire+0x7d10/0x7d10
[ 86.666380][ T4304] ? __rwlock_init+0x140/0x140
[ 86.671169][ T4304] ? hook_inode_free_security+0xa0/0xa0
[ 86.676825][ T4304] ? do_raw_spin_unlock+0x11d/0x230
[ 86.682048][ T4304] gfs2_put_super+0x1d2/0x7d0
[ 86.686755][ T4304] ? gfs2_evict_inode+0x1240/0x1240
[ 86.689739][ T4414] loop0: detected capacity change from 0 to 32768
[ 86.691975][ T4304] generic_shutdown_super+0x130/0x300
[ 86.703778][ T4304] kill_block_super+0x7c/0xe0
[ 86.708492][ T4304] deactivate_locked_super+0x93/0xf0
[ 86.713051][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 86.713809][ T4304] cleanup_mnt+0x42d/0x4e0
[ 86.728949][ T4304] ? lockdep_hardirqs_on+0x94/0x140
[ 86.734195][ T4304] task_work_run+0x125/0x1a0
[ 86.739044][ T4304] exit_to_user_mode_loop+0x10f/0x130
[ 86.744616][ T4304] exit_to_user_mode_prepare+0xee/0x180
[ 86.744932][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 86.750201][ T4304] syscall_exit_to_user_mode+0x16/0x40
[ 86.750230][ T4304] do_syscall_64+0x58/0xa0
[ 86.770092][ T4304] ? clear_bhb_loop+0x30/0x80
[ 86.774893][ T4304] ? clear_bhb_loop+0x30/0x80
[ 86.779657][ T4304] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 86.780634][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 86.785653][ T4304] RIP: 0033:0x7f8eb29c4a57
[ 86.785677][ T4304] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 86.785694][ T4304] RSP: 002b:00007ffda18309b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 86.785719][ T4304] RAX: 0000000000000000 RBX: 00007f8eb2a59048 RCX: 00007f8eb29c4a57
[ 86.785733][ T4304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda1830a70
[ 86.785744][ T4304] RBP: 00007ffda1830a70 R08: 00007ffda1831a70 R09: 00000000ffffffff
[ 86.785758][ T4304] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffda1831b00
[ 86.785771][ T4304] R13: 00007f8eb2a59048 R14: 0000000000015097 R15: 00007ffda1831b40
[ 86.804677][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 86.820451][ T4304]
[ 86.884258][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 86.894928][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 86.904884][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 86.915721][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 86.929443][ T4307] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 86.938371][ T4414] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 86.938392][ T4414] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 86.948236][ T4414] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[ 86.960259][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 86.965934][ T4220] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 86.986716][ T4412] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 86.994617][ T4412] CPU: 1 PID: 4412 Comm: syz.2.35 Not tainted syzkaller #0
[ 87.001953][ T4412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 87.006852][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 87.012242][ T4412] Call Trace:
[ 87.012256][ T4412]
[ 87.028865][ T4412] dump_stack_lvl+0x188/0x250
[ 87.033676][ T4412] ? show_regs_print_info+0x20/0x20
[ 87.039009][ T4412] ? load_image+0x400/0x400
[ 87.043570][ T4412] sysfs_create_dir_ns+0x26a/0x290
[ 87.048734][ T4412] ? sysfs_warn_dup+0xa0/0xa0
[ 87.053454][ T4412] ? do_raw_spin_unlock+0x11d/0x230
[ 87.054091][ T4220] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 87.059050][ T4412] kobject_add_internal+0x6e0/0xd90
[ 87.059094][ T4412] kobject_init_and_add+0x128/0x190
[ 87.059114][ T4412] ? lockdep_softirqs_off+0x430/0x430
[ 87.059142][ T4412] ? kobject_add+0x230/0x230
[ 87.059167][ T4412] ? __init_swait_queue_head+0xa5/0x150
[ 87.092189][ T4412] gfs2_sys_fs_add+0x24f/0x4b0
[ 87.097001][ T4412] ? gfs2_recover_set+0x240/0x240
[ 87.102149][ T4412] ? snprintf+0xe5/0x140
[ 87.106427][ T4412] ? __free_pages+0x95/0x1a0
[ 87.111149][ T4412] ? vscnprintf+0x80/0x80
[ 87.115530][ T4412] gfs2_fill_super+0x120f/0x1f00
[ 87.120779][ T4412] ? gfs2_reconfigure+0xd30/0xd30
[ 87.125463][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 87.125955][ T4412] ? sb_set_blocksize+0xa5/0xe0
[ 87.141408][ T4412] get_tree_bdev+0x3f1/0x610
[ 87.146054][ T4412] ? gfs2_reconfigure+0xd30/0xd30
[ 87.151125][ T4412] gfs2_get_tree+0x4d/0x1e0
[ 87.155676][ T4412] vfs_get_tree+0x88/0x270
[ 87.160235][ T4412] do_new_mount+0x24a/0xa40
[ 87.164884][ T4412] __se_sys_mount+0x2e3/0x3d0
[ 87.169713][ T4412] ? __x64_sys_mount+0xc0/0xc0
[ 87.174616][ T4412] ? lockdep_hardirqs_on+0x94/0x140
[ 87.179847][ T4412] ? __x64_sys_mount+0x1c/0xc0
[ 87.184656][ T4412] do_syscall_64+0x4c/0xa0
[ 87.189190][ T4412] ? clear_bhb_loop+0x30/0x80
[ 87.194030][ T4412] ? clear_bhb_loop+0x30/0x80
[ 87.198761][ T4412] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 87.203801][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 87.204687][ T4412] RIP: 0033:0x7f62e47f7a8a
[ 87.219020][ T4412] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 87.238658][ T4412] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 87.247394][ T4412] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 87.255490][ T4412] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 87.263687][ T4412] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 87.271867][ T4412] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 87.280026][ T4412] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 87.284805][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 87.288248][ T4412]
[ 87.289679][ T4412] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 87.315996][ T4412] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 87.339764][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 87.350984][ T4307] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 87.361921][ T4307] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 87.373634][ T4307] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 87.419875][ T4220] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 365ms
[ 87.741900][ T4416] loop1: detected capacity change from 0 to 32768
[ 87.748861][ T4220] gfs2: fsid=syz:syz.0: jid=0: Done
[ 87.754318][ T4414] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 87.768674][ T4308] device veth0_macvtap entered promiscuous mode
[ 87.792952][ T4308] device veth1_macvtap entered promiscuous mode
[ 87.824062][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 87.852856][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 87.937816][ T4418] loop2: detected capacity change from 0 to 32768
[ 87.947362][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 87.960728][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 87.977915][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 87.989289][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 88.002643][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 88.018841][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 88.024119][ T4414] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 88.032417][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[ 88.045863][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 88.061157][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 88.072939][ T4296] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 88.082145][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 88.087337][ T4416] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 88.098881][ T4296] CPU: 1 PID: 4296 Comm: syz-executor Not tainted syzkaller #0
[ 88.110510][ T4296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 88.121323][ T4296] Call Trace:
[ 88.124892][ T4296]
[ 88.128016][ T4296] dump_stack_lvl+0x188/0x250
[ 88.132715][ T4296] ? show_regs_print_info+0x20/0x20
[ 88.137924][ T4296] ? load_image+0x400/0x400
[ 88.142525][ T4296] ? do_raw_spin_unlock+0x11d/0x230
[ 88.147995][ T4296] gfs2_assert_warn_i+0x18f/0x2c0
[ 88.153732][ T4296] gfs2_quota_cleanup+0x4b4/0x6a0
[ 88.158958][ T4296] gfs2_make_fs_ro+0x523/0x620
[ 88.163731][ T4296] ? gfs2_dinode_out+0xb00/0xb00
[ 88.168794][ T4296] ? gfs2_put_super+0x189/0x7d0
[ 88.173666][ T4296] ? __lock_acquire+0x7d10/0x7d10
[ 88.178829][ T4296] ? __rwlock_init+0x140/0x140
[ 88.183691][ T4296] ? hook_inode_free_security+0xa0/0xa0
[ 88.189558][ T4296] ? do_raw_spin_unlock+0x11d/0x230
[ 88.194963][ T4296] gfs2_put_super+0x1d2/0x7d0
[ 88.199652][ T4296] ? gfs2_evict_inode+0x1240/0x1240
[ 88.204859][ T4296] generic_shutdown_super+0x130/0x300
[ 88.210247][ T4296] kill_block_super+0x7c/0xe0
[ 88.214939][ T4296] deactivate_locked_super+0x93/0xf0
[ 88.220239][ T4296] cleanup_mnt+0x42d/0x4e0
[ 88.224669][ T4296] ? lockdep_hardirqs_on+0x94/0x140
[ 88.229877][ T4296] task_work_run+0x125/0x1a0
[ 88.234582][ T4296] exit_to_user_mode_loop+0x10f/0x130
[ 88.240051][ T4296] exit_to_user_mode_prepare+0xee/0x180
[ 88.245690][ T4296] syscall_exit_to_user_mode+0x16/0x40
[ 88.251157][ T4296] do_syscall_64+0x58/0xa0
[ 88.255577][ T4296] ? clear_bhb_loop+0x30/0x80
[ 88.260266][ T4296] ? clear_bhb_loop+0x30/0x80
[ 88.264946][ T4296] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 88.270932][ T4296] RIP: 0033:0x7fd8ff296a57
[ 88.275359][ T4296] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 88.295075][ T4296] RSP: 002b:00007ffc26182c28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 88.303792][ T4296] RAX: 0000000000000000 RBX: 00007fd8ff32b048 RCX: 00007fd8ff296a57
[ 88.311894][ T4296] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc26182ce0
[ 88.319874][ T4296] RBP: 00007ffc26182ce0 R08: 00007ffc26183ce0 R09: 00000000ffffffff
[ 88.327939][ T4296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc26183d70
[ 88.335988][ T4296] R13: 00007fd8ff32b048 R14: 000000000001528e R15: 00007ffc26183db0
[ 88.344068][ T4296]
[ 88.347097][ T4416] CPU: 0 PID: 4416 Comm: syz.1.36 Not tainted syzkaller #0
[ 88.354424][ T4416] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 88.356889][ T4418] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 88.364497][ T4416] Call Trace:
[ 88.364507][ T4416]
[ 88.364515][ T4416] dump_stack_lvl+0x188/0x250
[ 88.364543][ T4416] ? show_regs_print_info+0x20/0x20
[ 88.364567][ T4416] ? load_image+0x400/0x400
[ 88.364600][ T4416] sysfs_create_dir_ns+0x26a/0x290
[ 88.364623][ T4416] ? sysfs_warn_dup+0xa0/0xa0
[ 88.364642][ T4416] ? do_raw_spin_unlock+0x11d/0x230
[ 88.364664][ T4416] kobject_add_internal+0x6e0/0xd90
[ 88.364694][ T4416] kobject_init_and_add+0x128/0x190
[ 88.364715][ T4416] ? lockdep_softirqs_off+0x430/0x430
[ 88.364739][ T4416] ? kobject_add+0x230/0x230
[ 88.364764][ T4416] ? __init_swait_queue_head+0xa5/0x150
[ 88.364788][ T4416] gfs2_sys_fs_add+0x24f/0x4b0
[ 88.364811][ T4416] ? gfs2_recover_set+0x240/0x240
[ 88.364833][ T4416] ? snprintf+0xe5/0x140
[ 88.364851][ T4416] ? __free_pages+0x95/0x1a0
[ 88.364877][ T4416] ? vscnprintf+0x80/0x80
[ 88.364909][ T4416] gfs2_fill_super+0x120f/0x1f00
[ 88.364946][ T4416] ? gfs2_reconfigure+0xd30/0xd30
[ 88.364987][ T4416] ? sb_set_blocksize+0xa5/0xe0
[ 88.365018][ T4416] get_tree_bdev+0x3f1/0x610
[ 88.365042][ T4416] ? gfs2_reconfigure+0xd30/0xd30
[ 88.365066][ T4416] gfs2_get_tree+0x4d/0x1e0
[ 88.365090][ T4416] vfs_get_tree+0x88/0x270
[ 88.365112][ T4416] do_new_mount+0x24a/0xa40
[ 88.365137][ T4416] __se_sys_mount+0x2e3/0x3d0
[ 88.365161][ T4416] ? __x64_sys_mount+0xc0/0xc0
[ 88.365187][ T4416] ? lockdep_hardirqs_on+0x94/0x140
[ 88.365206][ T4416] ? __x64_sys_mount+0x1c/0xc0
[ 88.365228][ T4416] do_syscall_64+0x4c/0xa0
[ 88.365247][ T4416] ? clear_bhb_loop+0x30/0x80
[ 88.365265][ T4416] ? clear_bhb_loop+0x30/0x80
[ 88.365286][ T4416] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 88.365306][ T4416] RIP: 0033:0x7f8eb29c4a8a
[ 88.365327][ T4416] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 88.365343][ T4416] RSP: 002b:00007f8eb2024e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 88.365368][ T4416] RAX: ffffffffffffffda RBX: 00007f8eb2024ee0 RCX: 00007f8eb29c4a8a
[ 88.365382][ T4416] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eb2024ea0
[ 88.365397][ T4416] RBP: 00002000000124c0 R08: 00007f8eb2024ee0 R09: 0000000000000000
[ 88.365411][ T4416] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 88.365425][ T4416] R13: 00007f8eb2024ea0 R14: 0000000000012616 R15: 0000200000000140
[ 88.365456][ T4416]
[ 88.365516][ T4416] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 88.365532][ T4416] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 88.442726][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 88.445414][ T4418] CPU: 1 PID: 4418 Comm: syz.2.37 Not tainted syzkaller #0
[ 88.445441][ T4418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 88.445453][ T4418] Call Trace:
[ 88.445460][ T4418]
[ 88.445469][ T4418] dump_stack_lvl+0x188/0x250
[ 88.445500][ T4418] ? show_regs_print_info+0x20/0x20
[ 88.445525][ T4418] ? load_image+0x400/0x400
[ 88.445555][ T4418] sysfs_create_dir_ns+0x26a/0x290
[ 88.445579][ T4418] ? sysfs_warn_dup+0xa0/0xa0
[ 88.445599][ T4418] ? do_raw_spin_unlock+0x11d/0x230
[ 88.445622][ T4418] kobject_add_internal+0x6e0/0xd90
[ 88.445653][ T4418] kobject_init_and_add+0x128/0x190
[ 88.445672][ T4418] ? lockdep_softirqs_off+0x430/0x430
[ 88.445699][ T4418] ? kobject_add+0x230/0x230
[ 88.445726][ T4418] ? __init_swait_queue_head+0xa5/0x150
[ 88.445754][ T4418] gfs2_sys_fs_add+0x24f/0x4b0
[ 88.445780][ T4418] ? gfs2_recover_set+0x240/0x240
[ 88.445802][ T4418] ? snprintf+0xe5/0x140
[ 88.445820][ T4418] ? __free_pages+0x95/0x1a0
[ 88.445844][ T4418] ? vscnprintf+0x80/0x80
[ 88.445876][ T4418] gfs2_fill_super+0x120f/0x1f00
[ 88.445912][ T4418] ? gfs2_reconfigure+0xd30/0xd30
[ 88.445949][ T4418] ? sb_set_blocksize+0xa5/0xe0
[ 88.445969][ T4418] get_tree_bdev+0x3f1/0x610
[ 88.445991][ T4418] ? gfs2_reconfigure+0xd30/0xd30
[ 88.446010][ T4418] gfs2_get_tree+0x4d/0x1e0
[ 88.446034][ T4418] vfs_get_tree+0x88/0x270
[ 88.446058][ T4418] do_new_mount+0x24a/0xa40
[ 88.446088][ T4418] __se_sys_mount+0x2e3/0x3d0
[ 88.446114][ T4418] ? __x64_sys_mount+0xc0/0xc0
[ 88.485513][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 88.488813][ T4418] ? lockdep_hardirqs_on+0x94/0x140
[ 88.557031][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 88.561740][ T4418] ? __x64_sys_mount+0x1c/0xc0
[ 88.818923][ T4418] do_syscall_64+0x4c/0xa0
[ 88.823361][ T4418] ? clear_bhb_loop+0x30/0x80
[ 88.828133][ T4418] ? clear_bhb_loop+0x30/0x80
[ 88.833016][ T4418] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 88.839009][ T4418] RIP: 0033:0x7f62e47f7a8a
[ 88.843521][ T4418] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 88.863500][ T4418] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 88.872113][ T4418] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 88.880096][ T4418] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 88.888157][ T4418] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 88.896219][ T4418] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 88.904378][ T4418] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 88.912471][ T4418]
[ 88.915558][ T4418] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 88.928717][ T4418] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 88.943650][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
[ 88.953301][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 88.963551][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
[ 88.973499][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 89.305469][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 89.314453][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 89.322800][ T4423] loop1: detected capacity change from 0 to 32768
[ 89.348493][ T4307] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 89.366122][ T4423] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 89.374336][ T4423] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 89.384981][ T4423] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[ 89.395458][ T4286] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 89.402260][ T4286] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 89.450680][ T4307] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 89.552355][ T4307] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 89.574751][ C1] sched: RT throttling activated
[ 89.580420][ T4307] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 89.610573][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 89.631625][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 89.648753][ T4424] loop0: detected capacity change from 0 to 32768
[ 89.681629][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 89.721419][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 89.753249][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 89.787390][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 89.789581][ T4426] loop2: detected capacity change from 0 to 32768
[ 89.824959][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 89.836769][ T4286] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 434ms
[ 89.844431][ T4286] gfs2: fsid=syz:syz.0: jid=0: Done
[ 89.849886][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 89.860238][ T4423] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 89.861175][ T4308] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[ 89.878491][ T4308] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[ 89.892356][ T4308] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 89.902114][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 89.911083][ T4351] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 89.943911][ T4426] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 89.951459][ T4426] CPU: 0 PID: 4426 Comm: syz.2.40 Not tainted syzkaller #0
[ 89.958792][ T4426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 89.969401][ T4426] Call Trace:
[ 89.972712][ T4426]
[ 89.975670][ T4426] dump_stack_lvl+0x188/0x250
[ 89.980564][ T4426] ? show_regs_print_info+0x20/0x20
[ 89.985801][ T4426] ? load_image+0x400/0x400
[ 89.990352][ T4426] sysfs_create_dir_ns+0x26a/0x290
[ 89.995499][ T4426] ? sysfs_warn_dup+0xa0/0xa0
[ 90.000293][ T4426] ? do_raw_spin_unlock+0x11d/0x230
[ 90.005533][ T4426] kobject_add_internal+0x6e0/0xd90
[ 90.010864][ T4426] kobject_init_and_add+0x128/0x190
[ 90.016098][ T4426] ? lockdep_softirqs_off+0x430/0x430
[ 90.021597][ T4426] ? kobject_add+0x230/0x230
[ 90.026237][ T4426] ? __init_swait_queue_head+0xa5/0x150
[ 90.031820][ T4426] gfs2_sys_fs_add+0x24f/0x4b0
[ 90.036616][ T4426] ? gfs2_recover_set+0x240/0x240
[ 90.041757][ T4426] ? snprintf+0xe5/0x140
[ 90.046057][ T4426] ? __free_pages+0x95/0x1a0
[ 90.050685][ T4426] ? vscnprintf+0x80/0x80
[ 90.055051][ T4426] gfs2_fill_super+0x120f/0x1f00
[ 90.060048][ T4426] ? gfs2_reconfigure+0xd30/0xd30
[ 90.065461][ T4426] ? sb_set_blocksize+0xa5/0xe0
[ 90.070356][ T4426] get_tree_bdev+0x3f1/0x610
[ 90.074984][ T4426] ? gfs2_reconfigure+0xd30/0xd30
[ 90.080127][ T4426] gfs2_get_tree+0x4d/0x1e0
[ 90.084680][ T4426] vfs_get_tree+0x88/0x270
[ 90.089138][ T4426] do_new_mount+0x24a/0xa40
[ 90.093685][ T4426] __se_sys_mount+0x2e3/0x3d0
[ 90.098399][ T4426] ? __x64_sys_mount+0xc0/0xc0
[ 90.103483][ T4426] ? lockdep_hardirqs_on+0x94/0x140
[ 90.108774][ T4426] ? __x64_sys_mount+0x1c/0xc0
[ 90.113666][ T4426] do_syscall_64+0x4c/0xa0
[ 90.118112][ T4426] ? clear_bhb_loop+0x30/0x80
[ 90.122824][ T4426] ? clear_bhb_loop+0x30/0x80
[ 90.127540][ T4426] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 90.133571][ T4426] RIP: 0033:0x7f62e47f7a8a
[ 90.138016][ T4426] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 90.158044][ T4426] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 90.166742][ T4426] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 90.174839][ T4426] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 90.182995][ T4426] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 90.191006][ T4426] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 90.199005][ T4426] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 90.207177][ T4426]
[ 90.210490][ T4426] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 90.223765][ T4426] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 90.244641][ T4424] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 90.252417][ T4424] CPU: 0 PID: 4424 Comm: syz.0.38 Not tainted syzkaller #0
[ 90.259903][ T4424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 90.270329][ T4424] Call Trace:
[ 90.273808][ T4424]
[ 90.276800][ T4424] dump_stack_lvl+0x188/0x250
[ 90.281544][ T4424] ? show_regs_print_info+0x20/0x20
[ 90.286779][ T4424] ? load_image+0x400/0x400
[ 90.291399][ T4424] sysfs_create_dir_ns+0x26a/0x290
[ 90.296522][ T4424] ? sysfs_warn_dup+0xa0/0xa0
[ 90.301267][ T4424] ? do_raw_spin_unlock+0x11d/0x230
[ 90.306513][ T4424] kobject_add_internal+0x6e0/0xd90
[ 90.311738][ T4424] kobject_init_and_add+0x128/0x190
[ 90.316946][ T4424] ? lockdep_softirqs_off+0x430/0x430
[ 90.322549][ T4424] ? kobject_add+0x230/0x230
[ 90.327246][ T4424] ? __init_swait_queue_head+0xa5/0x150
[ 90.332811][ T4424] gfs2_sys_fs_add+0x24f/0x4b0
[ 90.337585][ T4424] ? gfs2_recover_set+0x240/0x240
[ 90.342624][ T4424] ? snprintf+0xe5/0x140
[ 90.346956][ T4424] ? __free_pages+0x95/0x1a0
[ 90.351653][ T4424] ? vscnprintf+0x80/0x80
[ 90.356301][ T4424] gfs2_fill_super+0x120f/0x1f00
[ 90.361530][ T4424] ? gfs2_reconfigure+0xd30/0xd30
[ 90.366777][ T4424] ? sb_set_blocksize+0xa5/0xe0
[ 90.371637][ T4424] get_tree_bdev+0x3f1/0x610
[ 90.376341][ T4424] ? gfs2_reconfigure+0xd30/0xd30
[ 90.381460][ T4424] gfs2_get_tree+0x4d/0x1e0
[ 90.385970][ T4424] vfs_get_tree+0x88/0x270
[ 90.390414][ T4424] do_new_mount+0x24a/0xa40
[ 90.395018][ T4424] __se_sys_mount+0x2e3/0x3d0
[ 90.399814][ T4424] ? __x64_sys_mount+0xc0/0xc0
[ 90.404587][ T4424] ? lockdep_hardirqs_on+0x94/0x140
[ 90.410313][ T4424] ? __x64_sys_mount+0x1c/0xc0
[ 90.415084][ T4424] do_syscall_64+0x4c/0xa0
[ 90.419517][ T4424] ? clear_bhb_loop+0x30/0x80
[ 90.424211][ T4424] ? clear_bhb_loop+0x30/0x80
[ 90.429050][ T4424] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 90.435130][ T4424] RIP: 0033:0x7fd8ff296a8a
[ 90.439898][ T4424] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 90.459590][ T4424] RSP: 002b:00007fd8fe8f6e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 90.468010][ T4424] RAX: ffffffffffffffda RBX: 00007fd8fe8f6ee0 RCX: 00007fd8ff296a8a
[ 90.476353][ T4424] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fd8fe8f6ea0
[ 90.484340][ T4424] RBP: 00002000000124c0 R08: 00007fd8fe8f6ee0 R09: 0000000000000000
[ 90.492311][ T4424] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 90.500374][ T4424] R13: 00007fd8fe8f6ea0 R14: 0000000000012616 R15: 0000200000000140
[ 90.508633][ T4424]
[ 90.512056][ T4424] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 90.525396][ T4424] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 90.557705][ T4308] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 90.567274][ T4308] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 90.578400][ T4308] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 90.586671][ T4423] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 90.674817][ T4308] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 90.916164][ T4430] loop0: detected capacity change from 0 to 32768
[ 90.995378][ T4304] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 91.012072][ T4430] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 91.020073][ T4430] CPU: 1 PID: 4430 Comm: syz.0.42 Not tainted syzkaller #0
[ 91.027321][ T4430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 91.038087][ T4430] Call Trace:
[ 91.041441][ T4430]
[ 91.044402][ T4430] dump_stack_lvl+0x188/0x250
[ 91.049246][ T4430] ? show_regs_print_info+0x20/0x20
[ 91.054571][ T4430] ? load_image+0x400/0x400
[ 91.059220][ T4430] sysfs_create_dir_ns+0x26a/0x290
[ 91.064465][ T4430] ? sysfs_warn_dup+0xa0/0xa0
[ 91.069372][ T4430] ? do_raw_spin_unlock+0x11d/0x230
[ 91.074605][ T4430] kobject_add_internal+0x6e0/0xd90
[ 91.080095][ T4430] kobject_init_and_add+0x128/0x190
[ 91.085487][ T4430] ? lockdep_softirqs_off+0x430/0x430
[ 91.090997][ T4430] ? kobject_add+0x230/0x230
[ 91.095631][ T4430] ? __init_swait_queue_head+0xa5/0x150
[ 91.101220][ T4430] gfs2_sys_fs_add+0x24f/0x4b0
[ 91.106020][ T4430] ? gfs2_recover_set+0x240/0x240
[ 91.111082][ T4430] ? snprintf+0xe5/0x140
[ 91.115441][ T4430] ? __free_pages+0x95/0x1a0
[ 91.120143][ T4430] ? vscnprintf+0x80/0x80
[ 91.124545][ T4430] gfs2_fill_super+0x120f/0x1f00
[ 91.129528][ T4430] ? gfs2_reconfigure+0xd30/0xd30
[ 91.134701][ T4430] ? sb_set_blocksize+0xa5/0xe0
[ 91.139582][ T4430] get_tree_bdev+0x3f1/0x610
[ 91.144214][ T4430] ? gfs2_reconfigure+0xd30/0xd30
[ 91.149350][ T4430] gfs2_get_tree+0x4d/0x1e0
[ 91.153885][ T4430] vfs_get_tree+0x88/0x270
[ 91.158330][ T4430] do_new_mount+0x24a/0xa40
[ 91.163026][ T4430] __se_sys_mount+0x2e3/0x3d0
[ 91.167832][ T4430] ? __x64_sys_mount+0xc0/0xc0
[ 91.172784][ T4430] ? lockdep_hardirqs_on+0x94/0x140
[ 91.178027][ T4430] ? __x64_sys_mount+0x1c/0xc0
[ 91.182945][ T4430] do_syscall_64+0x4c/0xa0
[ 91.187395][ T4430] ? clear_bhb_loop+0x30/0x80
[ 91.192198][ T4430] ? clear_bhb_loop+0x30/0x80
[ 91.196908][ T4430] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 91.202933][ T4430] RIP: 0033:0x7fd8ff296a8a
[ 91.207499][ T4430] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 91.227145][ T4430] RSP: 002b:00007fd8fe8f6e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 91.235604][ T4430] RAX: ffffffffffffffda RBX: 00007fd8fe8f6ee0 RCX: 00007fd8ff296a8a
[ 91.243613][ T4430] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fd8fe8f6ea0
[ 91.251706][ T4430] RBP: 00002000000124c0 R08: 00007fd8fe8f6ee0 R09: 0000000000000000
[ 91.259714][ T4430] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 91.267719][ T4430] R13: 00007fd8fe8f6ea0 R14: 0000000000012616 R15: 0000200000000140
[ 91.275744][ T4430]
[ 91.280899][ T4430] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 91.294266][ T4430] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 91.331759][ T4304] CPU: 1 PID: 4304 Comm: syz-executor Not tainted syzkaller #0
[ 91.339374][ T4304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 91.349474][ T4304] Call Trace:
[ 91.353273][ T4304]
[ 91.356248][ T4304] dump_stack_lvl+0x188/0x250
[ 91.361183][ T4304] ? show_regs_print_info+0x20/0x20
[ 91.366620][ T4304] ? load_image+0x400/0x400
[ 91.371286][ T4304] ? do_raw_spin_unlock+0x11d/0x230
[ 91.376614][ T4304] gfs2_assert_warn_i+0x18f/0x2c0
[ 91.381775][ T4304] gfs2_quota_cleanup+0x4b4/0x6a0
[ 91.386984][ T4304] gfs2_make_fs_ro+0x523/0x620
[ 91.391960][ T4304] ? gfs2_dinode_out+0xb00/0xb00
[ 91.396943][ T4304] ? gfs2_put_super+0x189/0x7d0
[ 91.401893][ T4304] ? __lock_acquire+0x7d10/0x7d10
[ 91.407057][ T4304] ? __rwlock_init+0x140/0x140
[ 91.412254][ T4304] ? hook_inode_free_security+0xa0/0xa0
[ 91.417926][ T4304] ? do_raw_spin_unlock+0x11d/0x230
[ 91.423265][ T4304] gfs2_put_super+0x1d2/0x7d0
[ 91.428073][ T4304] ? gfs2_evict_inode+0x1240/0x1240
[ 91.433297][ T4304] generic_shutdown_super+0x130/0x300
[ 91.438782][ T4304] kill_block_super+0x7c/0xe0
[ 91.443624][ T4304] deactivate_locked_super+0x93/0xf0
[ 91.449023][ T4304] cleanup_mnt+0x42d/0x4e0
[ 91.451405][ T4432] loop2: detected capacity change from 0 to 32768
[ 91.453657][ T4304] ? lockdep_hardirqs_on+0x94/0x140
[ 91.465585][ T4304] task_work_run+0x125/0x1a0
[ 91.470289][ T4304] exit_to_user_mode_loop+0x10f/0x130
[ 91.475939][ T4304] exit_to_user_mode_prepare+0xee/0x180
[ 91.481491][ T4304] syscall_exit_to_user_mode+0x16/0x40
[ 91.487045][ T4304] do_syscall_64+0x58/0xa0
[ 91.491462][ T4304] ? clear_bhb_loop+0x30/0x80
[ 91.496155][ T4304] ? clear_bhb_loop+0x30/0x80
[ 91.500837][ T4304] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 91.506908][ T4304] RIP: 0033:0x7f8eb29c4a57
[ 91.511337][ T4304] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 91.531141][ T4304] RSP: 002b:00007ffda18309b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 91.539825][ T4304] RAX: 0000000000000000 RBX: 00007f8eb2a59048 RCX: 00007f8eb29c4a57
[ 91.547908][ T4304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda1830a70
[ 91.556015][ T4304] RBP: 00007ffda1830a70 R08: 00007ffda1831a70 R09: 00000000ffffffff
[ 91.563996][ T4304] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffda1831b00
[ 91.572032][ T4304] R13: 00007f8eb2a59048 R14: 0000000000015b62 R15: 00007ffda1831b40
[ 91.580030][ T4304]
[ 91.616178][ T4432] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 91.623614][ T4432] CPU: 0 PID: 4432 Comm: syz.2.41 Not tainted syzkaller #0
[ 91.630839][ T4432] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 91.640926][ T4432] Call Trace:
[ 91.644244][ T4432]
[ 91.647326][ T4432] dump_stack_lvl+0x188/0x250
[ 91.652032][ T4432] ? show_regs_print_info+0x20/0x20
[ 91.657259][ T4432] ? load_image+0x400/0x400
[ 91.661805][ T4432] sysfs_create_dir_ns+0x26a/0x290
[ 91.667123][ T4432] ? sysfs_warn_dup+0xa0/0xa0
[ 91.671916][ T4432] ? do_raw_spin_unlock+0x11d/0x230
[ 91.677142][ T4432] kobject_add_internal+0x6e0/0xd90
[ 91.682381][ T4432] kobject_init_and_add+0x128/0x190
[ 91.687793][ T4432] ? lockdep_softirqs_off+0x430/0x430
[ 91.693200][ T4432] ? kobject_add+0x230/0x230
[ 91.697847][ T4432] ? __init_swait_queue_head+0xa5/0x150
[ 91.703524][ T4432] gfs2_sys_fs_add+0x24f/0x4b0
[ 91.708343][ T4432] ? gfs2_recover_set+0x240/0x240
[ 91.713488][ T4432] ? snprintf+0xe5/0x140
[ 91.717762][ T4432] ? __free_pages+0x95/0x1a0
[ 91.722450][ T4432] ? vscnprintf+0x80/0x80
[ 91.726797][ T4432] gfs2_fill_super+0x120f/0x1f00
[ 91.732186][ T4432] ? gfs2_reconfigure+0xd30/0xd30
[ 91.737252][ T4432] ? sb_set_blocksize+0xa5/0xe0
[ 91.742111][ T4432] get_tree_bdev+0x3f1/0x610
[ 91.746734][ T4432] ? gfs2_reconfigure+0xd30/0xd30
[ 91.751764][ T4432] gfs2_get_tree+0x4d/0x1e0
[ 91.756436][ T4432] vfs_get_tree+0x88/0x270
[ 91.761214][ T4432] do_new_mount+0x24a/0xa40
[ 91.765729][ T4432] __se_sys_mount+0x2e3/0x3d0
[ 91.770601][ T4432] ? __x64_sys_mount+0xc0/0xc0
[ 91.775376][ T4432] ? lockdep_hardirqs_on+0x94/0x140
[ 91.780588][ T4432] ? __x64_sys_mount+0x1c/0xc0
[ 91.785389][ T4432] do_syscall_64+0x4c/0xa0
[ 91.789836][ T4432] ? clear_bhb_loop+0x30/0x80
[ 91.794634][ T4432] ? clear_bhb_loop+0x30/0x80
[ 91.799326][ T4432] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 91.805313][ T4432] RIP: 0033:0x7f62e47f7a8a
[ 91.809749][ T4432] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 91.829738][ T4432] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 91.838164][ T4432] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 91.846158][ T4432] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 91.854217][ T4432] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 91.862295][ T4432] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 91.870815][ T4432] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 91.878803][ T4432]
[ 91.882503][ T4432] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 91.896063][ T4432] gfs2: fsid=syz:syz: error -17 adding sysfs files
2026/04/05 23:04:46 executed programs: 35
[ 92.206069][ T4351] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 92.221612][ T4351] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 92.324381][ T3088] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 92.352842][ T3088] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 92.366873][ T4435] loop0: detected capacity change from 0 to 32768
[ 92.380033][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 92.415612][ T4363] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 92.446469][ T4435] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 92.454685][ T4435] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 92.467971][ T4435] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[ 92.509842][ T4286] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 92.518909][ T4363] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 92.547818][ T4286] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 92.581698][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 92.605868][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[ 92.692428][ T4439] loop1: detected capacity change from 0 to 32768
[ 92.715190][ T4363] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 92.729597][ T4363] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 92.795569][ T4439] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 92.803024][ T4439] CPU: 0 PID: 4439 Comm: syz.1.43 Not tainted syzkaller #0
[ 92.810562][ T4439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 92.820751][ T4439] Call Trace:
[ 92.824107][ T4439]
[ 92.827112][ T4439] dump_stack_lvl+0x188/0x250
[ 92.832038][ T4439] ? show_regs_print_info+0x20/0x20
[ 92.837288][ T4439] ? load_image+0x400/0x400
[ 92.841845][ T4439] sysfs_create_dir_ns+0x26a/0x290
[ 92.847093][ T4439] ? sysfs_warn_dup+0xa0/0xa0
[ 92.851816][ T4439] ? do_raw_spin_unlock+0x11d/0x230
[ 92.857188][ T4439] kobject_add_internal+0x6e0/0xd90
[ 92.862687][ T4439] kobject_init_and_add+0x128/0x190
[ 92.867950][ T4439] ? lockdep_softirqs_off+0x430/0x430
[ 92.873549][ T4439] ? kobject_add+0x230/0x230
[ 92.878197][ T4439] ? __init_swait_queue_head+0xa5/0x150
[ 92.883871][ T4439] gfs2_sys_fs_add+0x24f/0x4b0
[ 92.888717][ T4439] ? gfs2_recover_set+0x240/0x240
[ 92.893773][ T4439] ? snprintf+0xe5/0x140
[ 92.898431][ T4439] ? __free_pages+0x95/0x1a0
[ 92.903079][ T4439] ? vscnprintf+0x80/0x80
[ 92.907535][ T4439] gfs2_fill_super+0x120f/0x1f00
[ 92.912704][ T4439] ? gfs2_reconfigure+0xd30/0xd30
[ 92.917777][ T4439] ? sb_set_blocksize+0xa5/0xe0
[ 92.922662][ T4439] get_tree_bdev+0x3f1/0x610
[ 92.927369][ T4439] ? gfs2_reconfigure+0xd30/0xd30
[ 92.932525][ T4439] gfs2_get_tree+0x4d/0x1e0
[ 92.937301][ T4439] vfs_get_tree+0x88/0x270
[ 92.941760][ T4439] do_new_mount+0x24a/0xa40
[ 92.946304][ T4439] __se_sys_mount+0x2e3/0x3d0
[ 92.951361][ T4439] ? __x64_sys_mount+0xc0/0xc0
[ 92.956151][ T4439] ? lockdep_hardirqs_on+0x94/0x140
[ 92.961372][ T4439] ? __x64_sys_mount+0x1c/0xc0
[ 92.966379][ T4439] do_syscall_64+0x4c/0xa0
[ 92.970822][ T4439] ? clear_bhb_loop+0x30/0x80
[ 92.975633][ T4439] ? clear_bhb_loop+0x30/0x80
[ 92.980450][ T4439] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 92.986378][ T4439] RIP: 0033:0x7f8eb29c4a8a
[ 92.990843][ T4439] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 93.011036][ T4439] RSP: 002b:00007f8eb2024e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 93.019695][ T4439] RAX: ffffffffffffffda RBX: 00007f8eb2024ee0 RCX: 00007f8eb29c4a8a
[ 93.027714][ T4439] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eb2024ea0
[ 93.035915][ T4439] RBP: 00002000000124c0 R08: 00007f8eb2024ee0 R09: 0000000000000000
[ 93.044052][ T4439] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 93.052058][ T4439] R13: 00007f8eb2024ea0 R14: 0000000000012616 R15: 0000200000000140
[ 93.060348][ T4439]
[ 93.064325][ T4439] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 93.077703][ T4439] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 93.125707][ T4441] loop3: detected capacity change from 0 to 32768
[ 93.147055][ T4286] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 599ms
[ 93.155016][ T4286] gfs2: fsid=syz:syz.0: jid=0: Done
[ 93.160486][ T4435] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 93.242322][ T4441] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 93.250103][ T4441] CPU: 1 PID: 4441 Comm: syz.3.20 Not tainted syzkaller #0
[ 93.257330][ T4441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 93.267855][ T4441] Call Trace:
[ 93.271269][ T4441]
[ 93.274401][ T4441] dump_stack_lvl+0x188/0x250
[ 93.279112][ T4441] ? show_regs_print_info+0x20/0x20
[ 93.284609][ T4441] ? load_image+0x400/0x400
[ 93.289159][ T4441] sysfs_create_dir_ns+0x26a/0x290
[ 93.294402][ T4441] ? sysfs_warn_dup+0xa0/0xa0
[ 93.299206][ T4441] ? do_raw_spin_unlock+0x11d/0x230
[ 93.304440][ T4441] kobject_add_internal+0x6e0/0xd90
[ 93.309767][ T4441] kobject_init_and_add+0x128/0x190
[ 93.315010][ T4441] ? lockdep_softirqs_off+0x430/0x430
[ 93.320422][ T4441] ? kobject_add+0x230/0x230
[ 93.325336][ T4441] ? __init_swait_queue_head+0xa5/0x150
[ 93.331150][ T4441] gfs2_sys_fs_add+0x24f/0x4b0
[ 93.336229][ T4441] ? gfs2_recover_set+0x240/0x240
[ 93.342040][ T4441] ? snprintf+0xe5/0x140
[ 93.346323][ T4441] ? __free_pages+0x95/0x1a0
[ 93.351064][ T4441] ? vscnprintf+0x80/0x80
[ 93.355445][ T4441] gfs2_fill_super+0x120f/0x1f00
[ 93.360928][ T4441] ? gfs2_reconfigure+0xd30/0xd30
[ 93.366445][ T4441] ? sb_set_blocksize+0xa5/0xe0
[ 93.371336][ T4441] get_tree_bdev+0x3f1/0x610
[ 93.376245][ T4441] ? gfs2_reconfigure+0xd30/0xd30
[ 93.381314][ T4441] gfs2_get_tree+0x4d/0x1e0
[ 93.385859][ T4441] vfs_get_tree+0x88/0x270
[ 93.390398][ T4441] do_new_mount+0x24a/0xa40
[ 93.394939][ T4441] __se_sys_mount+0x2e3/0x3d0
[ 93.399656][ T4441] ? __x64_sys_mount+0xc0/0xc0
[ 93.404636][ T4441] ? lockdep_hardirqs_on+0x94/0x140
[ 93.409947][ T4441] ? __x64_sys_mount+0x1c/0xc0
[ 93.414826][ T4441] do_syscall_64+0x4c/0xa0
[ 93.419276][ T4441] ? clear_bhb_loop+0x30/0x80
[ 93.423973][ T4441] ? clear_bhb_loop+0x30/0x80
[ 93.428674][ T4441] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 93.434595][ T4441] RIP: 0033:0x7f71380ffa8a
[ 93.439041][ T4441] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 93.459019][ T4441] RSP: 002b:00007f713775fe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 93.467655][ T4441] RAX: ffffffffffffffda RBX: 00007f713775fee0 RCX: 00007f71380ffa8a
[ 93.475741][ T4441] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f713775fea0
[ 93.483649][ T4384] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[ 93.483731][ T4441] RBP: 00002000000124c0 R08: 00007f713775fee0 R09: 0000000000000000
[ 93.499203][ T4441] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 93.507212][ T4441] R13: 00007f713775fea0 R14: 0000000000012616 R15: 0000200000000140
[ 93.515361][ T4441]
[ 93.518489][ T4441] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 93.531984][ T4441] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 94.108457][ T4435] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 94.243277][ T4296] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 94.394800][ T4296] CPU: 1 PID: 4296 Comm: syz-executor Not tainted syzkaller #0
[ 94.402516][ T4296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 94.412701][ T4296] Call Trace:
[ 94.416010][ T4296]
[ 94.418962][ T4296] dump_stack_lvl+0x188/0x250
[ 94.423858][ T4296] ? show_regs_print_info+0x20/0x20
[ 94.429185][ T4296] ? load_image+0x400/0x400
[ 94.433729][ T4296] ? do_raw_spin_unlock+0x11d/0x230
[ 94.438979][ T4296] gfs2_assert_warn_i+0x18f/0x2c0
[ 94.444060][ T4296] gfs2_quota_cleanup+0x4b4/0x6a0
[ 94.449143][ T4296] gfs2_make_fs_ro+0x523/0x620
[ 94.453958][ T4296] ? gfs2_dinode_out+0xb00/0xb00
[ 94.459067][ T4296] ? gfs2_put_super+0x189/0x7d0
[ 94.463961][ T4296] ? __lock_acquire+0x7d10/0x7d10
[ 94.469035][ T4296] ? __rwlock_init+0x140/0x140
[ 94.473941][ T4296] ? hook_inode_free_security+0xa0/0xa0
[ 94.479532][ T4296] ? do_raw_spin_unlock+0x11d/0x230
[ 94.484767][ T4296] gfs2_put_super+0x1d2/0x7d0
[ 94.489480][ T4296] ? gfs2_evict_inode+0x1240/0x1240
[ 94.494801][ T4296] generic_shutdown_super+0x130/0x300
[ 94.500300][ T4296] kill_block_super+0x7c/0xe0
[ 94.505024][ T4296] deactivate_locked_super+0x93/0xf0
[ 94.510344][ T4296] cleanup_mnt+0x42d/0x4e0
[ 94.514799][ T4296] ? lockdep_hardirqs_on+0x94/0x140
[ 94.520030][ T4296] task_work_run+0x125/0x1a0
[ 94.524659][ T4296] exit_to_user_mode_loop+0x10f/0x130
[ 94.530167][ T4296] exit_to_user_mode_prepare+0xee/0x180
[ 94.535757][ T4296] syscall_exit_to_user_mode+0x16/0x40
[ 94.541335][ T4296] do_syscall_64+0x58/0xa0
[ 94.545789][ T4296] ? clear_bhb_loop+0x30/0x80
[ 94.550500][ T4296] ? clear_bhb_loop+0x30/0x80
[ 94.555234][ T4296] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 94.561239][ T4296] RIP: 0033:0x7fd8ff296a57
[ 94.565769][ T4296] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 94.585582][ T4296] RSP: 002b:00007ffc26182c28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 94.594034][ T4296] RAX: 0000000000000000 RBX: 00007fd8ff32b048 RCX: 00007fd8ff296a57
[ 94.602229][ T4296] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc26182ce0
[ 94.610228][ T4296] RBP: 00007ffc26182ce0 R08: 00007ffc26183ce0 R09: 00000000ffffffff
[ 94.618234][ T4296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc26183d70
[ 94.626236][ T4296] R13: 00007fd8ff32b048 R14: 00000000000167ba R15: 00007ffc26183db0
[ 94.634515][ T4296]
[ 94.653312][ T4453] loop4: detected capacity change from 0 to 32768
[ 94.653319][ T4455] loop3: detected capacity change from 0 to 32768
[ 94.710928][ T4453] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 94.711003][ T4455] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 94.719253][ T4453] CPU: 1 PID: 4453 Comm: syz.4.21 Not tainted syzkaller #0
[ 94.733394][ T4453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 94.743455][ T4453] Call Trace:
[ 94.746828][ T4453]
[ 94.749763][ T4453] dump_stack_lvl+0x188/0x250
[ 94.754484][ T4453] ? show_regs_print_info+0x20/0x20
[ 94.759779][ T4453] ? load_image+0x400/0x400
[ 94.764304][ T4453] sysfs_create_dir_ns+0x26a/0x290
[ 94.769428][ T4453] ? sysfs_warn_dup+0xa0/0xa0
[ 94.774214][ T4453] ? do_raw_spin_unlock+0x11d/0x230
[ 94.779433][ T4453] kobject_add_internal+0x6e0/0xd90
[ 94.784645][ T4453] kobject_init_and_add+0x128/0x190
[ 94.789898][ T4453] ? lockdep_softirqs_off+0x430/0x430
[ 94.795887][ T4453] ? kobject_add+0x230/0x230
[ 94.800513][ T4453] ? __init_swait_queue_head+0xa5/0x150
[ 94.806168][ T4453] gfs2_sys_fs_add+0x24f/0x4b0
[ 94.810972][ T4453] ? gfs2_recover_set+0x240/0x240
[ 94.816109][ T4453] ? snprintf+0xe5/0x140
[ 94.820533][ T4453] ? __free_pages+0x95/0x1a0
[ 94.825139][ T4453] ? vscnprintf+0x80/0x80
[ 94.829486][ T4453] gfs2_fill_super+0x120f/0x1f00
[ 94.834441][ T4453] ? gfs2_reconfigure+0xd30/0xd30
[ 94.839484][ T4453] ? sb_set_blocksize+0xa5/0xe0
[ 94.844378][ T4453] get_tree_bdev+0x3f1/0x610
[ 94.849073][ T4453] ? gfs2_reconfigure+0xd30/0xd30
[ 94.854106][ T4453] gfs2_get_tree+0x4d/0x1e0
[ 94.858641][ T4453] vfs_get_tree+0x88/0x270
[ 94.863157][ T4453] do_new_mount+0x24a/0xa40
[ 94.867759][ T4453] __se_sys_mount+0x2e3/0x3d0
[ 94.872451][ T4453] ? __x64_sys_mount+0xc0/0xc0
[ 94.877226][ T4453] ? lockdep_hardirqs_on+0x94/0x140
[ 94.882661][ T4453] ? __x64_sys_mount+0x1c/0xc0
[ 94.887520][ T4453] do_syscall_64+0x4c/0xa0
[ 94.891960][ T4453] ? clear_bhb_loop+0x30/0x80
[ 94.896654][ T4453] ? clear_bhb_loop+0x30/0x80
[ 94.901348][ T4453] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 94.907252][ T4453] RIP: 0033:0x7f8eef173a8a
[ 94.911873][ T4453] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 94.931498][ T4453] RSP: 002b:00007f8eee7d3e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 94.940072][ T4453] RAX: ffffffffffffffda RBX: 00007f8eee7d3ee0 RCX: 00007f8eef173a8a
[ 94.948067][ T4453] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eee7d3ea0
[ 94.956138][ T4453] RBP: 00002000000124c0 R08: 00007f8eee7d3ee0 R09: 0000000000000000
[ 94.964123][ T4453] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 94.972302][ T4453] R13: 00007f8eee7d3ea0 R14: 0000000000012616 R15: 0000200000000140
[ 94.980399][ T4453]
[ 94.983432][ T4455] CPU: 0 PID: 4455 Comm: syz.3.49 Not tainted syzkaller #0
[ 94.984454][ T4453] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 94.990743][ T4455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 94.990757][ T4455] Call Trace:
[ 94.990765][ T4455]
[ 94.990774][ T4455] dump_stack_lvl+0x188/0x250
[ 95.004625][ T4453] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 95.014778][ T4455] ? show_regs_print_info+0x20/0x20
[ 95.037593][ T4455] ? load_image+0x400/0x400
[ 95.042150][ T4455] sysfs_create_dir_ns+0x26a/0x290
[ 95.047286][ T4455] ? sysfs_warn_dup+0xa0/0xa0
[ 95.051992][ T4455] ? do_raw_spin_unlock+0x11d/0x230
[ 95.057399][ T4455] kobject_add_internal+0x6e0/0xd90
[ 95.062640][ T4455] kobject_init_and_add+0x128/0x190
[ 95.067915][ T4455] ? lockdep_softirqs_off+0x430/0x430
[ 95.073424][ T4455] ? kobject_add+0x230/0x230
[ 95.078264][ T4455] ? __init_swait_queue_head+0xa5/0x150
[ 95.083851][ T4455] gfs2_sys_fs_add+0x24f/0x4b0
[ 95.088649][ T4455] ? gfs2_recover_set+0x240/0x240
[ 95.093706][ T4455] ? snprintf+0xe5/0x140
[ 95.097978][ T4455] ? __free_pages+0x95/0x1a0
[ 95.102613][ T4455] ? vscnprintf+0x80/0x80
[ 95.106982][ T4455] gfs2_fill_super+0x120f/0x1f00
[ 95.112105][ T4455] ? gfs2_reconfigure+0xd30/0xd30
[ 95.117271][ T4455] ? sb_set_blocksize+0xa5/0xe0
[ 95.122168][ T4455] get_tree_bdev+0x3f1/0x610
[ 95.126798][ T4455] ? gfs2_reconfigure+0xd30/0xd30
[ 95.131939][ T4455] gfs2_get_tree+0x4d/0x1e0
[ 95.136652][ T4455] vfs_get_tree+0x88/0x270
[ 95.141139][ T4455] do_new_mount+0x24a/0xa40
[ 95.145686][ T4455] __se_sys_mount+0x2e3/0x3d0
[ 95.150399][ T4455] ? __x64_sys_mount+0xc0/0xc0
[ 95.155377][ T4455] ? lockdep_hardirqs_on+0x94/0x140
[ 95.160690][ T4455] ? __x64_sys_mount+0x1c/0xc0
[ 95.165483][ T4455] do_syscall_64+0x4c/0xa0
[ 95.170121][ T4455] ? clear_bhb_loop+0x30/0x80
[ 95.174908][ T4455] ? clear_bhb_loop+0x30/0x80
[ 95.179624][ T4455] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 95.185537][ T4455] RIP: 0033:0x7f71380ffa8a
[ 95.189979][ T4455] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 95.209880][ T4455] RSP: 002b:00007f713775fe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 95.218339][ T4455] RAX: ffffffffffffffda RBX: 00007f713775fee0 RCX: 00007f71380ffa8a
[ 95.226340][ T4455] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f713775fea0
[ 95.234350][ T4455] RBP: 00002000000124c0 R08: 00007f713775fee0 R09: 0000000000000000
[ 95.242459][ T4455] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 95.250670][ T4455] R13: 00007f713775fea0 R14: 0000000000012616 R15: 0000200000000140
[ 95.258730][ T4455]
[ 95.264616][ T4455] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 95.277898][ T4455] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 95.873339][ T4459] loop0: detected capacity change from 0 to 32768
[ 96.055846][ T4461] loop4: detected capacity change from 0 to 32768
[ 96.176040][ T4459] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 96.184421][ T4459] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 96.197130][ T4459] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[ 96.208208][ T4461] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 96.215699][ T4461] CPU: 0 PID: 4461 Comm: syz.4.52 Not tainted syzkaller #0
[ 96.223033][ T4461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 96.233259][ T4461] Call Trace:
[ 96.236670][ T4461]
[ 96.239692][ T4461] dump_stack_lvl+0x188/0x250
[ 96.244407][ T4461] ? show_regs_print_info+0x20/0x20
[ 96.249634][ T4461] ? load_image+0x400/0x400
[ 96.254462][ T4461] sysfs_create_dir_ns+0x26a/0x290
[ 96.259618][ T4461] ? sysfs_warn_dup+0xa0/0xa0
[ 96.264510][ T4461] ? do_raw_spin_unlock+0x11d/0x230
[ 96.269834][ T4461] kobject_add_internal+0x6e0/0xd90
[ 96.275080][ T4461] kobject_init_and_add+0x128/0x190
[ 96.280569][ T4461] ? lockdep_softirqs_off+0x430/0x430
[ 96.286082][ T4461] ? kobject_add+0x230/0x230
[ 96.290715][ T4461] ? __init_swait_queue_head+0xa5/0x150
[ 96.296387][ T4461] gfs2_sys_fs_add+0x24f/0x4b0
[ 96.301186][ T4461] ? gfs2_recover_set+0x240/0x240
[ 96.306247][ T4461] ? snprintf+0xe5/0x140
[ 96.310830][ T4461] ? __free_pages+0x95/0x1a0
[ 96.315456][ T4461] ? vscnprintf+0x80/0x80
[ 96.319833][ T4461] gfs2_fill_super+0x120f/0x1f00
[ 96.324911][ T4461] ? gfs2_reconfigure+0xd30/0xd30
[ 96.329988][ T4461] ? sb_set_blocksize+0xa5/0xe0
[ 96.334869][ T4461] get_tree_bdev+0x3f1/0x610
[ 96.339505][ T4461] ? gfs2_reconfigure+0xd30/0xd30
[ 96.344822][ T4461] gfs2_get_tree+0x4d/0x1e0
[ 96.349409][ T4461] vfs_get_tree+0x88/0x270
[ 96.354024][ T4461] do_new_mount+0x24a/0xa40
[ 96.358567][ T4461] __se_sys_mount+0x2e3/0x3d0
[ 96.363282][ T4461] ? __x64_sys_mount+0xc0/0xc0
[ 96.364606][ T4463] loop3: detected capacity change from 0 to 32768
[ 96.368157][ T4461] ? lockdep_hardirqs_on+0x94/0x140
[ 96.368182][ T4461] ? __x64_sys_mount+0x1c/0xc0
[ 96.381383][ T4283] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 96.384886][ T4461] do_syscall_64+0x4c/0xa0
[ 96.384914][ T4461] ? clear_bhb_loop+0x30/0x80
[ 96.391763][ T4283] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 96.396271][ T4461] ? clear_bhb_loop+0x30/0x80
[ 96.396297][ T4461] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 96.396318][ T4461] RIP: 0033:0x7f8eef173a8a
[ 96.396339][ T4461] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 96.443101][ T4461] RSP: 002b:00007f8eee7d3e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 96.446234][ T4283] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 54ms
[ 96.451644][ T4461] RAX: ffffffffffffffda RBX: 00007f8eee7d3ee0 RCX: 00007f8eef173a8a
[ 96.451664][ T4461] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eee7d3ea0
[ 96.451678][ T4461] RBP: 00002000000124c0 R08: 00007f8eee7d3ee0 R09: 0000000000000000
[ 96.460835][ T4283] gfs2: fsid=syz:syz.0: jid=0: Done
[ 96.467247][ T4461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 96.467265][ T4461] R13: 00007f8eee7d3ea0 R14: 0000000000012616 R15: 0000200000000140
[ 96.467296][ T4461]
[ 96.468082][ T4461] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 96.521708][ T4461] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 96.548721][ T4463] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 96.556313][ T4463] CPU: 1 PID: 4463 Comm: syz.3.53 Not tainted syzkaller #0
[ 96.563550][ T4463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 96.573633][ T4463] Call Trace:
[ 96.577040][ T4463]
[ 96.580001][ T4463] dump_stack_lvl+0x188/0x250
[ 96.585933][ T4463] ? show_regs_print_info+0x20/0x20
[ 96.591364][ T4463] ? load_image+0x400/0x400
[ 96.595905][ T4463] sysfs_create_dir_ns+0x26a/0x290
[ 96.601148][ T4463] ? sysfs_warn_dup+0xa0/0xa0
[ 96.605889][ T4463] ? do_raw_spin_unlock+0x11d/0x230
[ 96.611125][ T4463] kobject_add_internal+0x6e0/0xd90
[ 96.612117][ T4448] loop1: detected capacity change from 0 to 32768
[ 96.616384][ T4463] kobject_init_and_add+0x128/0x190
[ 96.616409][ T4463] ? lockdep_softirqs_off+0x430/0x430
[ 96.616435][ T4463] ? kobject_add+0x230/0x230
[ 96.638195][ T4463] ? __init_swait_queue_head+0xa5/0x150
[ 96.643773][ T4463] gfs2_sys_fs_add+0x24f/0x4b0
[ 96.648565][ T4463] ? gfs2_recover_set+0x240/0x240
[ 96.653617][ T4463] ? snprintf+0xe5/0x140
[ 96.657970][ T4463] ? __free_pages+0x95/0x1a0
[ 96.662596][ T4463] ? vscnprintf+0x80/0x80
[ 96.666969][ T4463] gfs2_fill_super+0x120f/0x1f00
[ 96.672034][ T4463] ? gfs2_reconfigure+0xd30/0xd30
[ 96.677201][ T4463] ? sb_set_blocksize+0xa5/0xe0
[ 96.682258][ T4463] get_tree_bdev+0x3f1/0x610
[ 96.686889][ T4463] ? gfs2_reconfigure+0xd30/0xd30
[ 96.691959][ T4463] gfs2_get_tree+0x4d/0x1e0
[ 96.696496][ T4463] vfs_get_tree+0x88/0x270
[ 96.700944][ T4463] do_new_mount+0x24a/0xa40
[ 96.705500][ T4463] __se_sys_mount+0x2e3/0x3d0
[ 96.710218][ T4463] ? __x64_sys_mount+0xc0/0xc0
[ 96.715030][ T4463] ? lockdep_hardirqs_on+0x94/0x140
[ 96.720253][ T4463] ? __x64_sys_mount+0x1c/0xc0
[ 96.725112][ T4463] do_syscall_64+0x4c/0xa0
[ 96.729827][ T4463] ? clear_bhb_loop+0x30/0x80
[ 96.734722][ T4463] ? clear_bhb_loop+0x30/0x80
[ 96.739471][ T4463] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 96.745586][ T4463] RIP: 0033:0x7f71380ffa8a
[ 96.750222][ T4463] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 96.770067][ T4463] RSP: 002b:00007f713775fe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 96.778611][ T4463] RAX: ffffffffffffffda RBX: 00007f713775fee0 RCX: 00007f71380ffa8a
[ 96.786621][ T4463] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f713775fea0
[ 96.794625][ T4463] RBP: 00002000000124c0 R08: 00007f713775fee0 R09: 0000000000000000
[ 96.802759][ T4463] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 96.810856][ T4463] R13: 00007f713775fea0 R14: 0000000000012616 R15: 0000200000000140
[ 96.818887][ T4463]
[ 96.821986][ T4463] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 96.835246][ T4463] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 96.848877][ T4459] gfs2: fsid=syz:syz.0: first mount done, others may mount
2026/04/05 23:04:51 executed programs: 48
[ 96.991324][ T4465] loop2: detected capacity change from 0 to 32768
[ 97.396274][ T4470] loop4: detected capacity change from 0 to 32768
[ 97.455814][ T4465] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 97.463247][ T4465] CPU: 0 PID: 4465 Comm: syz.2.54 Not tainted syzkaller #0
[ 97.470781][ T4465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 97.480947][ T4465] Call Trace:
[ 97.484249][ T4465]
[ 97.487223][ T4465] dump_stack_lvl+0x188/0x250
[ 97.492018][ T4465] ? show_regs_print_info+0x20/0x20
[ 97.497240][ T4465] ? load_image+0x400/0x400
[ 97.501792][ T4465] sysfs_create_dir_ns+0x26a/0x290
[ 97.506940][ T4465] ? sysfs_warn_dup+0xa0/0xa0
[ 97.511672][ T4465] ? do_raw_spin_unlock+0x11d/0x230
[ 97.516901][ T4465] kobject_add_internal+0x6e0/0xd90
[ 97.522140][ T4465] kobject_init_and_add+0x128/0x190
[ 97.527487][ T4465] ? lockdep_softirqs_off+0x430/0x430
[ 97.532904][ T4465] ? kobject_add+0x230/0x230
[ 97.537537][ T4465] ? __init_swait_queue_head+0xa5/0x150
[ 97.543224][ T4465] gfs2_sys_fs_add+0x24f/0x4b0
[ 97.548115][ T4465] ? gfs2_recover_set+0x240/0x240
[ 97.553196][ T4465] ? snprintf+0xe5/0x140
[ 97.557905][ T4465] ? __free_pages+0x95/0x1a0
[ 97.562614][ T4465] ? vscnprintf+0x80/0x80
[ 97.567072][ T4465] gfs2_fill_super+0x120f/0x1f00
[ 97.572057][ T4465] ? gfs2_reconfigure+0xd30/0xd30
[ 97.577226][ T4465] ? sb_set_blocksize+0xa5/0xe0
[ 97.582371][ T4465] get_tree_bdev+0x3f1/0x610
[ 97.587006][ T4465] ? gfs2_reconfigure+0xd30/0xd30
[ 97.592096][ T4465] gfs2_get_tree+0x4d/0x1e0
[ 97.596737][ T4465] vfs_get_tree+0x88/0x270
[ 97.601187][ T4465] do_new_mount+0x24a/0xa40
[ 97.605735][ T4465] __se_sys_mount+0x2e3/0x3d0
[ 97.610448][ T4465] ? __x64_sys_mount+0xc0/0xc0
[ 97.615249][ T4465] ? lockdep_hardirqs_on+0x94/0x140
[ 97.620568][ T4465] ? __x64_sys_mount+0x1c/0xc0
[ 97.625375][ T4465] do_syscall_64+0x4c/0xa0
[ 97.629841][ T4465] ? clear_bhb_loop+0x30/0x80
[ 97.634524][ T4465] ? clear_bhb_loop+0x30/0x80
[ 97.639208][ T4465] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 97.645302][ T4465] RIP: 0033:0x7f62e47f7a8a
[ 97.649723][ T4465] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 97.669433][ T4465] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 97.677859][ T4465] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 97.685944][ T4465] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 97.694016][ T4465] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 97.702017][ T4465] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 97.710175][ T4465] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 97.718195][ T4465]
[ 97.723084][ T4465] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 97.736437][ T4465] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 97.764885][ T144] device hsr_slave_0 left promiscuous mode
[ 97.782613][ T144] device hsr_slave_1 left promiscuous mode
[ 97.792112][ T4470] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 97.800470][ T4470] CPU: 1 PID: 4470 Comm: syz.4.56 Not tainted syzkaller #0
[ 97.807702][ T4470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 97.817788][ T4470] Call Trace:
[ 97.821094][ T4470]
[ 97.824054][ T4470] dump_stack_lvl+0x188/0x250
[ 97.829026][ T4470] ? show_regs_print_info+0x20/0x20
[ 97.834275][ T4470] ? load_image+0x400/0x400
[ 97.838824][ T4470] sysfs_create_dir_ns+0x26a/0x290
[ 97.844019][ T4470] ? sysfs_warn_dup+0xa0/0xa0
[ 97.848813][ T4470] ? do_raw_spin_unlock+0x11d/0x230
[ 97.854052][ T4470] kobject_add_internal+0x6e0/0xd90
[ 97.859404][ T4470] kobject_init_and_add+0x128/0x190
[ 97.864738][ T4470] ? lockdep_softirqs_off+0x430/0x430
[ 97.870308][ T4470] ? kobject_add+0x230/0x230
[ 97.874941][ T4470] ? __init_swait_queue_head+0xa5/0x150
[ 97.880537][ T4470] gfs2_sys_fs_add+0x24f/0x4b0
[ 97.885336][ T4470] ? gfs2_recover_set+0x240/0x240
[ 97.890381][ T4470] ? snprintf+0xe5/0x140
[ 97.894797][ T4470] ? __free_pages+0x95/0x1a0
[ 97.899686][ T4470] ? vscnprintf+0x80/0x80
[ 97.904058][ T4470] gfs2_fill_super+0x120f/0x1f00
[ 97.909138][ T4470] ? gfs2_reconfigure+0xd30/0xd30
[ 97.914219][ T4470] ? sb_set_blocksize+0xa5/0xe0
[ 97.919104][ T4470] get_tree_bdev+0x3f1/0x610
[ 97.923729][ T4470] ? gfs2_reconfigure+0xd30/0xd30
[ 97.928787][ T4470] gfs2_get_tree+0x4d/0x1e0
[ 97.933328][ T4470] vfs_get_tree+0x88/0x270
[ 97.937775][ T4470] do_new_mount+0x24a/0xa40
[ 97.942311][ T4470] __se_sys_mount+0x2e3/0x3d0
[ 97.947020][ T4470] ? __x64_sys_mount+0xc0/0xc0
[ 97.951824][ T4470] ? lockdep_hardirqs_on+0x94/0x140
[ 97.957056][ T4470] ? __x64_sys_mount+0x1c/0xc0
[ 97.961893][ T4470] do_syscall_64+0x4c/0xa0
[ 97.966341][ T4470] ? clear_bhb_loop+0x30/0x80
[ 97.971137][ T4470] ? clear_bhb_loop+0x30/0x80
[ 97.975847][ T4470] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 97.981878][ T4470] RIP: 0033:0x7f8eef173a8a
[ 97.986530][ T4470] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 98.006269][ T4470] RSP: 002b:00007f8eee7d3e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 98.014725][ T4470] RAX: ffffffffffffffda RBX: 00007f8eee7d3ee0 RCX: 00007f8eef173a8a
[ 98.023158][ T4470] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eee7d3ea0
[ 98.031162][ T4470] RBP: 00002000000124c0 R08: 00007f8eee7d3ee0 R09: 0000000000000000
[ 98.039196][ T4470] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 98.047294][ T4470] R13: 00007f8eee7d3ea0 R14: 0000000000012616 R15: 0000200000000140
[ 98.055407][ T4470]
[ 98.067252][ T4470] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 98.067420][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[ 98.081587][ T4470] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 98.502737][ T4474] loop1: detected capacity change from 0 to 32768
[ 98.594928][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0
[ 98.668263][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[ 98.678282][ T4459] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 98.844150][ T4477] loop2: detected capacity change from 0 to 32768
[ 98.871101][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1
[ 98.891073][ T4296] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 99.126471][ T4296] CPU: 0 PID: 4296 Comm: syz-executor Not tainted syzkaller #0
[ 99.134095][ T4296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 99.144543][ T4296] Call Trace:
[ 99.147861][ T4296]
[ 99.150818][ T4296] dump_stack_lvl+0x188/0x250
[ 99.155530][ T4296] ? show_regs_print_info+0x20/0x20
[ 99.160772][ T4296] ? load_image+0x400/0x400
[ 99.165311][ T4296] ? do_raw_spin_unlock+0x11d/0x230
[ 99.170733][ T4296] gfs2_assert_warn_i+0x18f/0x2c0
[ 99.175795][ T4296] gfs2_quota_cleanup+0x4b4/0x6a0
[ 99.180863][ T4296] gfs2_make_fs_ro+0x523/0x620
[ 99.185662][ T4296] ? gfs2_dinode_out+0xb00/0xb00
[ 99.190633][ T4296] ? gfs2_put_super+0x189/0x7d0
[ 99.195519][ T4296] ? __lock_acquire+0x7d10/0x7d10
[ 99.200576][ T4296] ? __rwlock_init+0x140/0x140
[ 99.205368][ T4296] ? hook_inode_free_security+0xa0/0xa0
[ 99.210952][ T4296] ? do_raw_spin_unlock+0x11d/0x230
[ 99.216269][ T4296] gfs2_put_super+0x1d2/0x7d0
[ 99.220980][ T4296] ? gfs2_evict_inode+0x1240/0x1240
[ 99.226206][ T4296] generic_shutdown_super+0x130/0x300
[ 99.231804][ T4296] kill_block_super+0x7c/0xe0
[ 99.236662][ T4296] deactivate_locked_super+0x93/0xf0
[ 99.241990][ T4296] cleanup_mnt+0x42d/0x4e0
[ 99.246531][ T4296] ? lockdep_hardirqs_on+0x94/0x140
[ 99.251774][ T4296] task_work_run+0x125/0x1a0
[ 99.256404][ T4296] exit_to_user_mode_loop+0x10f/0x130
[ 99.261920][ T4296] exit_to_user_mode_prepare+0xee/0x180
[ 99.267502][ T4296] syscall_exit_to_user_mode+0x16/0x40
[ 99.273020][ T4296] do_syscall_64+0x58/0xa0
[ 99.277470][ T4296] ? clear_bhb_loop+0x30/0x80
[ 99.282264][ T4296] ? clear_bhb_loop+0x30/0x80
[ 99.286960][ T4296] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 99.292882][ T4296] RIP: 0033:0x7fd8ff296a57
[ 99.297415][ T4296] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 99.298345][ T144] device bridge_slave_1 left promiscuous mode
[ 99.317307][ T4296] RSP: 002b:00007ffc26182c28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 99.317344][ T4296] RAX: 0000000000000000 RBX: 00007fd8ff32b048 RCX: 00007fd8ff296a57
[ 99.317360][ T4296] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc26182ce0
[ 99.348288][ T4296] RBP: 00007ffc26182ce0 R08: 00007ffc26183ce0 R09: 00000000ffffffff
[ 99.356364][ T4296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc26183d70
[ 99.364429][ T4296] R13: 00007fd8ff32b048 R14: 000000000001750a R15: 00007ffc26183db0
[ 99.372418][ T4296]
[ 99.383022][ T4477] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 99.390936][ T4477] CPU: 1 PID: 4477 Comm: syz.2.59 Not tainted syzkaller #0
[ 99.397983][ T4474] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 99.398224][ T4477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 99.415756][ T4477] Call Trace:
[ 99.419050][ T4477]
[ 99.421992][ T4477] dump_stack_lvl+0x188/0x250
[ 99.426789][ T4477] ? show_regs_print_info+0x20/0x20
[ 99.432187][ T4477] ? load_image+0x400/0x400
[ 99.436806][ T4477] sysfs_create_dir_ns+0x26a/0x290
[ 99.442048][ T4477] ? sysfs_warn_dup+0xa0/0xa0
[ 99.446819][ T4477] ? do_raw_spin_unlock+0x11d/0x230
[ 99.452118][ T4477] kobject_add_internal+0x6e0/0xd90
[ 99.457425][ T4477] kobject_init_and_add+0x128/0x190
[ 99.462717][ T4477] ? lockdep_softirqs_off+0x430/0x430
[ 99.468102][ T4477] ? kobject_add+0x230/0x230
[ 99.472700][ T4477] ? __init_swait_queue_head+0xa5/0x150
[ 99.478380][ T4477] gfs2_sys_fs_add+0x24f/0x4b0
[ 99.483243][ T4477] ? gfs2_recover_set+0x240/0x240
[ 99.488381][ T4477] ? snprintf+0xe5/0x140
[ 99.492633][ T4477] ? __free_pages+0x95/0x1a0
[ 99.497495][ T4477] ? vscnprintf+0x80/0x80
[ 99.501914][ T4477] gfs2_fill_super+0x120f/0x1f00
[ 99.506964][ T4477] ? gfs2_reconfigure+0xd30/0xd30
[ 99.512013][ T4477] ? sb_set_blocksize+0xa5/0xe0
[ 99.517053][ T4477] get_tree_bdev+0x3f1/0x610
[ 99.521748][ T4477] ? gfs2_reconfigure+0xd30/0xd30
[ 99.526791][ T4477] gfs2_get_tree+0x4d/0x1e0
[ 99.531317][ T4477] vfs_get_tree+0x88/0x270
[ 99.536279][ T4477] do_new_mount+0x24a/0xa40
[ 99.540798][ T4477] __se_sys_mount+0x2e3/0x3d0
[ 99.545490][ T4477] ? __x64_sys_mount+0xc0/0xc0
[ 99.550261][ T4477] ? lockdep_hardirqs_on+0x94/0x140
[ 99.555564][ T4477] ? __x64_sys_mount+0x1c/0xc0
[ 99.560334][ T4477] do_syscall_64+0x4c/0xa0
[ 99.564841][ T4477] ? clear_bhb_loop+0x30/0x80
[ 99.569522][ T4477] ? clear_bhb_loop+0x30/0x80
[ 99.574308][ T4477] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 99.580422][ T4477] RIP: 0033:0x7f62e47f7a8a
[ 99.584881][ T4477] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 99.604590][ T4477] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 99.613013][ T4477] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 99.621089][ T4477] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 99.629500][ T4477] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 99.637577][ T4477] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 99.645743][ T4477] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 99.653729][ T4477]
[ 99.656751][ T4474] CPU: 0 PID: 4474 Comm: syz.1.57 Not tainted syzkaller #0
[ 99.657948][ T4477] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 99.663971][ T4474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 99.677548][ T4477] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 99.687667][ T4474] Call Trace:
[ 99.687677][ T4474]
[ 99.687685][ T4474] dump_stack_lvl+0x188/0x250
[ 99.705192][ T4474] ? show_regs_print_info+0x20/0x20
[ 99.710521][ T4474] ? load_image+0x400/0x400
[ 99.715070][ T4474] sysfs_create_dir_ns+0x26a/0x290
[ 99.720236][ T4474] ? sysfs_warn_dup+0xa0/0xa0
[ 99.725137][ T4474] ? do_raw_spin_unlock+0x11d/0x230
[ 99.730373][ T4474] kobject_add_internal+0x6e0/0xd90
[ 99.735610][ T4474] kobject_init_and_add+0x128/0x190
[ 99.740989][ T4474] ? lockdep_softirqs_off+0x430/0x430
[ 99.744012][ T144] bridge0: port 2(bridge_slave_1) entered disabled state
[ 99.746592][ T4474] ? kobject_add+0x230/0x230
[ 99.746629][ T4474] ? __init_swait_queue_head+0xa5/0x150
[ 99.746659][ T4474] gfs2_sys_fs_add+0x24f/0x4b0
[ 99.768905][ T4474] ? gfs2_recover_set+0x240/0x240
[ 99.774068][ T4474] ? snprintf+0xe5/0x140
[ 99.778348][ T4474] ? __free_pages+0x95/0x1a0
[ 99.783077][ T4474] ? vscnprintf+0x80/0x80
[ 99.787628][ T4474] gfs2_fill_super+0x120f/0x1f00
[ 99.792628][ T4474] ? gfs2_reconfigure+0xd30/0xd30
[ 99.797797][ T4474] ? sb_set_blocksize+0xa5/0xe0
[ 99.802855][ T4474] get_tree_bdev+0x3f1/0x610
[ 99.807501][ T4474] ? gfs2_reconfigure+0xd30/0xd30
[ 99.812745][ T4474] gfs2_get_tree+0x4d/0x1e0
[ 99.817288][ T4474] vfs_get_tree+0x88/0x270
[ 99.821827][ T4474] do_new_mount+0x24a/0xa40
[ 99.826378][ T4474] __se_sys_mount+0x2e3/0x3d0
[ 99.831310][ T4474] ? __x64_sys_mount+0xc0/0xc0
[ 99.836195][ T4474] ? lockdep_hardirqs_on+0x94/0x140
[ 99.841437][ T4474] ? __x64_sys_mount+0x1c/0xc0
[ 99.846349][ T4474] do_syscall_64+0x4c/0xa0
[ 99.850791][ T4474] ? clear_bhb_loop+0x30/0x80
[ 99.855659][ T4474] ? clear_bhb_loop+0x30/0x80
[ 99.860414][ T4474] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 99.866337][ T4474] RIP: 0033:0x7f8eb29c4a8a
[ 99.870980][ T4474] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 99.891067][ T4474] RSP: 002b:00007f8eb2024e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 99.899598][ T4474] RAX: ffffffffffffffda RBX: 00007f8eb2024ee0 RCX: 00007f8eb29c4a8a
[ 99.907589][ T4474] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eb2024ea0
[ 99.915704][ T4474] RBP: 00002000000124c0 R08: 00007f8eb2024ee0 R09: 0000000000000000
[ 99.923807][ T4474] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 99.931813][ T4474] R13: 00007f8eb2024ea0 R14: 0000000000012616 R15: 0000200000000140
[ 99.939832][ T4474]
[ 99.943094][ T4474] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 99.956354][ T4474] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 100.055875][ T4483] loop3: detected capacity change from 0 to 32768
[ 100.060760][ T144] device bridge_slave_0 left promiscuous mode
[ 100.235195][ T144] bridge0: port 1(bridge_slave_0) entered disabled state
[ 100.247116][ T4483] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 100.255931][ T4483] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 100.283458][ T4483] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[ 100.293195][ T4291] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 100.333391][ T4291] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 100.466109][ T4485] loop4: detected capacity change from 0 to 32768
[ 100.752667][ T4489] loop2: detected capacity change from 0 to 32768
[ 100.880945][ T4485] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 100.888565][ T4485] CPU: 1 PID: 4485 Comm: syz.4.64 Not tainted syzkaller #0
[ 100.895796][ T4485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 100.906137][ T4485] Call Trace:
[ 100.909440][ T4485]
[ 100.912396][ T4485] dump_stack_lvl+0x188/0x250
[ 100.915143][ T4490] loop1: detected capacity change from 0 to 32768
[ 100.917102][ T4485] ? show_regs_print_info+0x20/0x20
[ 100.928349][ T4489] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 100.929087][ T4485] ? load_image+0x400/0x400
[ 100.940966][ T4485] sysfs_create_dir_ns+0x26a/0x290
[ 100.946187][ T4485] ? sysfs_warn_dup+0xa0/0xa0
[ 100.950873][ T4485] ? do_raw_spin_unlock+0x11d/0x230
[ 100.956084][ T4485] kobject_add_internal+0x6e0/0xd90
[ 100.961295][ T4485] kobject_init_and_add+0x128/0x190
[ 100.966761][ T4485] ? lockdep_softirqs_off+0x430/0x430
[ 100.972181][ T4485] ? kobject_add+0x230/0x230
[ 100.976782][ T4485] ? __init_swait_queue_head+0xa5/0x150
[ 100.982340][ T4485] gfs2_sys_fs_add+0x24f/0x4b0
[ 100.987211][ T4485] ? gfs2_recover_set+0x240/0x240
[ 100.992265][ T4485] ? snprintf+0xe5/0x140
[ 100.996549][ T4485] ? __free_pages+0x95/0x1a0
[ 101.001371][ T4485] ? vscnprintf+0x80/0x80
[ 101.005756][ T4485] gfs2_fill_super+0x120f/0x1f00
[ 101.010735][ T4485] ? gfs2_reconfigure+0xd30/0xd30
[ 101.015792][ T4485] ? sb_set_blocksize+0xa5/0xe0
[ 101.020832][ T4485] get_tree_bdev+0x3f1/0x610
[ 101.025433][ T4485] ? gfs2_reconfigure+0xd30/0xd30
[ 101.030470][ T4485] gfs2_get_tree+0x4d/0x1e0
[ 101.035073][ T4485] vfs_get_tree+0x88/0x270
[ 101.039503][ T4485] do_new_mount+0x24a/0xa40
[ 101.044191][ T4485] __se_sys_mount+0x2e3/0x3d0
[ 101.048912][ T4485] ? __x64_sys_mount+0xc0/0xc0
[ 101.053701][ T4485] ? lockdep_hardirqs_on+0x94/0x140
[ 101.059394][ T4485] ? __x64_sys_mount+0x1c/0xc0
[ 101.064193][ T4485] do_syscall_64+0x4c/0xa0
[ 101.068630][ T4485] ? clear_bhb_loop+0x30/0x80
[ 101.073369][ T4485] ? clear_bhb_loop+0x30/0x80
[ 101.078063][ T4485] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 101.084057][ T4485] RIP: 0033:0x7f8eef173a8a
[ 101.088569][ T4485] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 101.108271][ T4485] RSP: 002b:00007f8eee7d3e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 101.116879][ T4485] RAX: ffffffffffffffda RBX: 00007f8eee7d3ee0 RCX: 00007f8eef173a8a
[ 101.125510][ T4485] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eee7d3ea0
[ 101.133505][ T4485] RBP: 00002000000124c0 R08: 00007f8eee7d3ee0 R09: 0000000000000000
[ 101.141575][ T4485] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 101.149640][ T4485] R13: 00007f8eee7d3ea0 R14: 0000000000012616 R15: 0000200000000140
[ 101.157747][ T4485]
[ 101.160770][ T4489] CPU: 0 PID: 4489 Comm: syz.2.65 Not tainted syzkaller #0
[ 101.163936][ T4485] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 101.168164][ T4489] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 101.168186][ T4489] Call Trace:
[ 101.168194][ T4489]
[ 101.168203][ T4489] dump_stack_lvl+0x188/0x250
[ 101.168233][ T4489] ? show_regs_print_info+0x20/0x20
[ 101.168259][ T4489] ? load_image+0x400/0x400
[ 101.168291][ T4489] sysfs_create_dir_ns+0x26a/0x290
[ 101.168316][ T4489] ? sysfs_warn_dup+0xa0/0xa0
[ 101.168338][ T4489] ? do_raw_spin_unlock+0x11d/0x230
[ 101.168365][ T4489] kobject_add_internal+0x6e0/0xd90
[ 101.168395][ T4489] kobject_init_and_add+0x128/0x190
[ 101.168417][ T4489] ? lockdep_softirqs_off+0x430/0x430
[ 101.168446][ T4489] ? kobject_add+0x230/0x230
[ 101.168472][ T4489] ? __init_swait_queue_head+0xa5/0x150
[ 101.168500][ T4489] gfs2_sys_fs_add+0x24f/0x4b0
[ 101.168526][ T4489] ? gfs2_recover_set+0x240/0x240
[ 101.168548][ T4489] ? snprintf+0xe5/0x140
[ 101.168566][ T4489] ? __free_pages+0x95/0x1a0
[ 101.168592][ T4489] ? vscnprintf+0x80/0x80
[ 101.168625][ T4489] gfs2_fill_super+0x120f/0x1f00
[ 101.168662][ T4489] ? gfs2_reconfigure+0xd30/0xd30
[ 101.168704][ T4489] ? sb_set_blocksize+0xa5/0xe0
[ 101.168728][ T4489] get_tree_bdev+0x3f1/0x610
[ 101.168753][ T4489] ? gfs2_reconfigure+0xd30/0xd30
[ 101.168777][ T4489] gfs2_get_tree+0x4d/0x1e0
[ 101.168803][ T4489] vfs_get_tree+0x88/0x270
[ 101.168826][ T4489] do_new_mount+0x24a/0xa40
[ 101.168856][ T4489] __se_sys_mount+0x2e3/0x3d0
[ 101.168884][ T4489] ? __x64_sys_mount+0xc0/0xc0
[ 101.168911][ T4489] ? lockdep_hardirqs_on+0x94/0x140
[ 101.168932][ T4489] ? __x64_sys_mount+0x1c/0xc0
[ 101.168957][ T4489] do_syscall_64+0x4c/0xa0
[ 101.168975][ T4489] ? clear_bhb_loop+0x30/0x80
[ 101.168996][ T4489] ? clear_bhb_loop+0x30/0x80
[ 101.169019][ T4489] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 101.169039][ T4489] RIP: 0033:0x7f62e47f7a8a
[ 101.182327][ T4485] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 101.192447][ T4489] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 101.192466][ T4489] RSP: 002b:00007f62e3e57e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 101.192489][ T4489] RAX: ffffffffffffffda RBX: 00007f62e3e57ee0 RCX: 00007f62e47f7a8a
[ 101.192504][ T4489] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f62e3e57ea0
[ 101.310233][ T4291] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 976ms
[ 101.312171][ T4489] RBP: 00002000000124c0 R08: 00007f62e3e57ee0 R09: 0000000000000000
[ 101.428648][ T4489] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 101.436645][ T4489] R13: 00007f62e3e57ea0 R14: 0000000000012616 R15: 0000200000000140
[ 101.444748][ T4489]
[ 101.448439][ T4489] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 101.461875][ T4489] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 101.685811][ T4291] gfs2: fsid=syz:syz.0: jid=0: Done
[ 101.691231][ T4483] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 101.735356][ T4490] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 101.742946][ T4490] CPU: 1 PID: 4490 Comm: syz.1.66 Not tainted syzkaller #0
[ 101.750315][ T4490] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 101.760580][ T4490] Call Trace:
[ 101.763903][ T4490]
[ 101.766874][ T4490] dump_stack_lvl+0x188/0x250
[ 101.771593][ T4490] ? show_regs_print_info+0x20/0x20
[ 101.776861][ T4490] ? load_image+0x400/0x400
[ 101.781424][ T4490] sysfs_create_dir_ns+0x26a/0x290
[ 101.786668][ T4490] ? sysfs_warn_dup+0xa0/0xa0
[ 101.791393][ T4490] ? do_raw_spin_unlock+0x11d/0x230
[ 101.796716][ T4490] kobject_add_internal+0x6e0/0xd90
[ 101.801957][ T4490] kobject_init_and_add+0x128/0x190
[ 101.807273][ T4490] ? lockdep_softirqs_off+0x430/0x430
[ 101.812790][ T4490] ? kobject_add+0x230/0x230
[ 101.817432][ T4490] ? __init_swait_queue_head+0xa5/0x150
[ 101.823037][ T4490] gfs2_sys_fs_add+0x24f/0x4b0
[ 101.827945][ T4490] ? gfs2_recover_set+0x240/0x240
[ 101.833138][ T4490] ? snprintf+0xe5/0x140
[ 101.837415][ T4490] ? __free_pages+0x95/0x1a0
[ 101.842133][ T4490] ? vscnprintf+0x80/0x80
[ 101.846512][ T4490] gfs2_fill_super+0x120f/0x1f00
[ 101.851493][ T4490] ? gfs2_reconfigure+0xd30/0xd30
[ 101.856565][ T4490] ? sb_set_blocksize+0xa5/0xe0
[ 101.861442][ T4490] get_tree_bdev+0x3f1/0x610
[ 101.866069][ T4490] ? gfs2_reconfigure+0xd30/0xd30
[ 101.871271][ T4490] gfs2_get_tree+0x4d/0x1e0
[ 101.875977][ T4490] vfs_get_tree+0x88/0x270
[ 101.880700][ T4490] do_new_mount+0x24a/0xa40
[ 101.885438][ T4490] __se_sys_mount+0x2e3/0x3d0
[ 101.890601][ T4490] ? __x64_sys_mount+0xc0/0xc0
[ 101.895399][ T4490] ? lockdep_hardirqs_on+0x94/0x140
[ 101.900715][ T4490] ? __x64_sys_mount+0x1c/0xc0
[ 101.905505][ T4490] do_syscall_64+0x4c/0xa0
[ 101.910041][ T4490] ? clear_bhb_loop+0x30/0x80
[ 101.914752][ T4490] ? clear_bhb_loop+0x30/0x80
[ 101.919467][ T4490] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 101.925397][ T4490] RIP: 0033:0x7f8eb29c4a8a
[ 101.930054][ T4490] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 101.950260][ T4490] RSP: 002b:00007f8eb2024e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 101.958717][ T4490] RAX: ffffffffffffffda RBX: 00007f8eb2024ee0 RCX: 00007f8eb29c4a8a
[ 101.966810][ T4490] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eb2024ea0
[ 101.974910][ T4490] RBP: 00002000000124c0 R08: 00007f8eb2024ee0 R09: 0000000000000000
[ 101.983062][ T4490] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 101.991162][ T4490] R13: 00007f8eb2024ea0 R14: 0000000000012616 R15: 0000200000000140
[ 101.999555][ T4490]
[ 102.004444][ T4490] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 102.017993][ T4490] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 102.021754][ T4483] gfs2: fsid=syz:syz.0: found 1 quota changes
2026/04/05 23:04:56 executed programs: 62
[ 102.053636][ T144] device veth1_macvtap left promiscuous mode
[ 102.057556][ T4499] gfs2: fsid=syz:syz.0: gfs2_quotad: sync error -57
[ 102.060866][ T144] device veth0_macvtap left promiscuous mode
[ 102.136495][ T144] device veth1_vlan left promiscuous mode
[ 102.464692][ T4503] loop0: detected capacity change from 0 to 32768
[ 102.914370][ T4307] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 102.989746][ T4509] loop1: detected capacity change from 0 to 32768
[ 102.999119][ T144] device veth0_vlan left promiscuous mode
[ 103.006012][ T4307] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[ 103.025494][ T4503] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 103.032964][ T4503] CPU: 0 PID: 4503 Comm: syz.0.60 Not tainted syzkaller #0
[ 103.040370][ T4503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 103.050489][ T4503] Call Trace:
[ 103.053792][ T4503]
[ 103.056750][ T4503] dump_stack_lvl+0x188/0x250
[ 103.061570][ T4503] ? show_regs_print_info+0x20/0x20
[ 103.066908][ T4503] ? load_image+0x400/0x400
[ 103.071457][ T4503] sysfs_create_dir_ns+0x26a/0x290
[ 103.076601][ T4503] ? sysfs_warn_dup+0xa0/0xa0
[ 103.081406][ T4503] ? do_raw_spin_unlock+0x11d/0x230
[ 103.086775][ T4503] kobject_add_internal+0x6e0/0xd90
[ 103.091996][ T4503] kobject_init_and_add+0x128/0x190
[ 103.097317][ T4503] ? lockdep_softirqs_off+0x430/0x430
[ 103.102729][ T4503] ? kobject_add+0x230/0x230
[ 103.107570][ T4503] ? __init_swait_queue_head+0xa5/0x150
[ 103.113168][ T4503] gfs2_sys_fs_add+0x24f/0x4b0
[ 103.118065][ T4503] ? gfs2_recover_set+0x240/0x240
[ 103.123224][ T4503] ? snprintf+0xe5/0x140
[ 103.127502][ T4503] ? __free_pages+0x95/0x1a0
[ 103.132127][ T4503] ? vscnprintf+0x80/0x80
[ 103.136504][ T4503] gfs2_fill_super+0x120f/0x1f00
[ 103.137406][ T4509] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 103.141575][ T4503] ? gfs2_reconfigure+0xd30/0xd30
[ 103.141621][ T4503] ? sb_set_blocksize+0xa5/0xe0
[ 103.159075][ T4503] get_tree_bdev+0x3f1/0x610
[ 103.163684][ T4503] ? gfs2_reconfigure+0xd30/0xd30
[ 103.168721][ T4503] gfs2_get_tree+0x4d/0x1e0
[ 103.173336][ T4503] vfs_get_tree+0x88/0x270
[ 103.177896][ T4503] do_new_mount+0x24a/0xa40
[ 103.182459][ T4503] __se_sys_mount+0x2e3/0x3d0
[ 103.187162][ T4503] ? __x64_sys_mount+0xc0/0xc0
[ 103.191953][ T4503] ? lockdep_hardirqs_on+0x94/0x140
[ 103.197256][ T4503] ? __x64_sys_mount+0x1c/0xc0
[ 103.202036][ T4503] do_syscall_64+0x4c/0xa0
[ 103.206460][ T4503] ? clear_bhb_loop+0x30/0x80
[ 103.211230][ T4503] ? clear_bhb_loop+0x30/0x80
[ 103.215915][ T4503] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 103.221829][ T4503] RIP: 0033:0x7fd8ff296a8a
[ 103.226250][ T4503] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 103.246011][ T4503] RSP: 002b:00007fd8fe8f6e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 103.254664][ T4503] RAX: ffffffffffffffda RBX: 00007fd8fe8f6ee0 RCX: 00007fd8ff296a8a
[ 103.262825][ T4503] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fd8fe8f6ea0
[ 103.270817][ T4503] RBP: 00002000000124c0 R08: 00007fd8fe8f6ee0 R09: 0000000000000000
[ 103.279083][ T4503] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 103.287174][ T4503] R13: 00007fd8fe8f6ea0 R14: 0000000000012616 R15: 0000200000000140
[ 103.295284][ T4503]
[ 103.298402][ T4509] CPU: 1 PID: 4509 Comm: syz.1.72 Not tainted syzkaller #0
[ 103.300259][ T4503] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 103.305708][ T4509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 103.305722][ T4509] Call Trace:
[ 103.305730][ T4509]
[ 103.305738][ T4509] dump_stack_lvl+0x188/0x250
[ 103.305767][ T4509] ? show_regs_print_info+0x20/0x20
[ 103.318987][ T4503] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 103.329008][ T4509] ? load_image+0x400/0x400
[ 103.329043][ T4509] sysfs_create_dir_ns+0x26a/0x290
[ 103.361736][ T4509] ? sysfs_warn_dup+0xa0/0xa0
[ 103.366543][ T4509] ? do_raw_spin_unlock+0x11d/0x230
[ 103.371978][ T4509] kobject_add_internal+0x6e0/0xd90
[ 103.377613][ T4509] kobject_init_and_add+0x128/0x190
[ 103.382856][ T4509] ? lockdep_softirqs_off+0x430/0x430
[ 103.388587][ T4509] ? kobject_add+0x230/0x230
[ 103.393306][ T4509] ? __init_swait_queue_head+0xa5/0x150
[ 103.398918][ T4509] gfs2_sys_fs_add+0x24f/0x4b0
[ 103.403724][ T4509] ? gfs2_recover_set+0x240/0x240
[ 103.408994][ T4509] ? snprintf+0xe5/0x140
[ 103.413267][ T4509] ? __free_pages+0x95/0x1a0
[ 103.418067][ T4509] ? vscnprintf+0x80/0x80
[ 103.422457][ T4509] gfs2_fill_super+0x120f/0x1f00
[ 103.427462][ T4509] ? gfs2_reconfigure+0xd30/0xd30
[ 103.432559][ T4509] ? sb_set_blocksize+0xa5/0xe0
[ 103.437460][ T4509] get_tree_bdev+0x3f1/0x610
[ 103.442269][ T4509] ? gfs2_reconfigure+0xd30/0xd30
[ 103.447714][ T4509] gfs2_get_tree+0x4d/0x1e0
[ 103.452446][ T4509] vfs_get_tree+0x88/0x270
[ 103.456904][ T4509] do_new_mount+0x24a/0xa40
[ 103.461462][ T4509] __se_sys_mount+0x2e3/0x3d0
[ 103.466187][ T4509] ? __x64_sys_mount+0xc0/0xc0
[ 103.471179][ T4509] ? lockdep_hardirqs_on+0x94/0x140
[ 103.476424][ T4509] ? __x64_sys_mount+0x1c/0xc0
[ 103.481242][ T4509] do_syscall_64+0x4c/0xa0
[ 103.485782][ T4509] ? clear_bhb_loop+0x30/0x80
[ 103.490728][ T4509] ? clear_bhb_loop+0x30/0x80
[ 103.495451][ T4509] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 103.501388][ T4509] RIP: 0033:0x7f8eb29c4a8a
[ 103.505845][ T4509] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 103.525900][ T4509] RSP: 002b:00007f8eb2024e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 103.534731][ T4509] RAX: ffffffffffffffda RBX: 00007f8eb2024ee0 RCX: 00007f8eb29c4a8a
[ 103.542739][ T4509] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eb2024ea0
[ 103.550940][ T4509] RBP: 00002000000124c0 R08: 00007f8eb2024ee0 R09: 0000000000000000
[ 103.559033][ T4509] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 103.567063][ T4509] R13: 00007f8eb2024ea0 R14: 0000000000012616 R15: 0000200000000140
[ 103.575255][ T4509]
[ 103.580655][ T4509] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 103.595073][ T4509] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 103.644802][ T4307] CPU: 1 PID: 4307 Comm: syz-executor Not tainted syzkaller #0
[ 103.652627][ T4307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 103.662728][ T4307] Call Trace:
[ 103.666053][ T4307]
[ 103.669026][ T4307] dump_stack_lvl+0x188/0x250
[ 103.673738][ T4307] ? show_regs_print_info+0x20/0x20
[ 103.679114][ T4307] ? load_image+0x400/0x400
[ 103.683654][ T4307] ? do_raw_spin_unlock+0x11d/0x230
[ 103.688975][ T4307] gfs2_assert_warn_i+0x18f/0x2c0
[ 103.694088][ T4307] gfs2_quota_cleanup+0x4b4/0x6a0
[ 103.699165][ T4307] gfs2_make_fs_ro+0x440/0x620
[ 103.703987][ T4307] ? __might_sleep+0xf0/0xf0
[ 103.708723][ T4307] ? gfs2_dinode_out+0xb00/0xb00
[ 103.713838][ T4307] ? _raw_spin_unlock+0x24/0x40
[ 103.718725][ T4307] ? gfs2_glock_nq+0xcb0/0x1550
[ 103.723637][ T4307] gfs2_withdraw+0x610/0x1490
[ 103.728445][ T4307] ? gfs2_lm+0x240/0x240
[ 103.732720][ T4307] ? rwsem_write_trylock+0x135/0x1c0
[ 103.738056][ T4307] ? gfs2_freeze_lock+0x52/0xc0
[ 103.742942][ T4307] ? up_write+0x1bb/0x420
[ 103.747310][ T4307] gfs2_log_flush+0x1e1a/0x2600
[ 103.752218][ T4307] ? gfs2_ail_empty_tr+0x2f0/0x2f0
[ 103.757451][ T4307] ? do_sync+0x955/0xc40
[ 103.761827][ T4307] ? kfree+0xef/0x2a0
[ 103.765838][ T4307] do_sync+0x9b0/0xc40
[ 103.769950][ T4307] ? slot_put+0x1e0/0x1e0
[ 103.774313][ T4307] ? __lock_acquire+0x7d10/0x7d10
[ 103.779362][ T4307] ? do_raw_spin_lock+0x128/0x2f0
[ 103.784509][ T4307] ? do_raw_spin_unlock+0x11d/0x230
[ 103.789822][ T4307] gfs2_quota_sync+0x32c/0x700
[ 103.794635][ T4307] gfs2_sync_fs+0x48/0xb0
[ 103.799087][ T4307] sync_filesystem+0xe6/0x220
[ 103.803882][ T4307] generic_shutdown_super+0x6b/0x300
[ 103.809206][ T4307] kill_block_super+0x7c/0xe0
[ 103.814109][ T4307] deactivate_locked_super+0x93/0xf0
[ 103.819431][ T4307] cleanup_mnt+0x42d/0x4e0
[ 103.824066][ T4307] ? lockdep_hardirqs_on+0x94/0x140
[ 103.829555][ T4307] task_work_run+0x125/0x1a0
[ 103.834356][ T4307] exit_to_user_mode_loop+0x10f/0x130
[ 103.840283][ T4307] exit_to_user_mode_prepare+0xee/0x180
[ 103.846463][ T4307] syscall_exit_to_user_mode+0x16/0x40
[ 103.851951][ T4307] do_syscall_64+0x58/0xa0
[ 103.856587][ T4307] ? clear_bhb_loop+0x30/0x80
[ 103.861299][ T4307] ? clear_bhb_loop+0x30/0x80
[ 103.866009][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 103.871946][ T4307] RIP: 0033:0x7f71380ffa57
[ 103.876489][ T4307] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 103.896822][ T4307] RSP: 002b:00007ffee1582658 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 103.905277][ T4307] RAX: 0000000000000000 RBX: 00007f7138194048 RCX: 00007f71380ffa57
[ 103.913366][ T4307] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffee1582710
[ 103.921439][ T4307] RBP: 00007ffee1582710 R08: 00007ffee1583710 R09: 00000000ffffffff
[ 103.929429][ T4307] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffee15837a0
[ 103.937667][ T4307] R13: 00007f7138194048 R14: 0000000000018e61 R15: 00007ffee15837e0
[ 103.945900][ T4307]
[ 104.395417][ T4307] gfs2: fsid=syz:syz.0: Journal recovery skipped for jid 0 until next mount.
[ 104.404663][ T4307] gfs2: fsid=syz:syz.0: Glock dequeues delayed: 0
[ 104.412526][ T4307] gfs2: fsid=syz:syz.0: File system withdrawn
[ 104.454860][ T4307] CPU: 0 PID: 4307 Comm: syz-executor Not tainted syzkaller #0
[ 104.462579][ T4307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 104.472673][ T4307] Call Trace:
[ 104.476123][ T4307]
[ 104.479185][ T4307] dump_stack_lvl+0x188/0x250
[ 104.483910][ T4307] ? kobject_uevent_env+0x371/0x890
[ 104.489343][ T4307] ? show_regs_print_info+0x20/0x20
[ 104.494579][ T4307] ? load_image+0x400/0x400
[ 104.499113][ T4307] ? kobject_uevent_env+0x371/0x890
[ 104.504476][ T4307] ? lockref_put_or_lock+0x6e/0xb0
[ 104.509746][ T4307] gfs2_withdraw+0x1149/0x1490
[ 104.514732][ T4307] ? gfs2_lm+0x240/0x240
[ 104.519440][ T4307] ? rwsem_write_trylock+0x135/0x1c0
[ 104.524763][ T4307] ? up_write+0x1bb/0x420
[ 104.529330][ T4307] gfs2_log_flush+0x1e1a/0x2600
[ 104.534444][ T4307] ? gfs2_ail_empty_tr+0x2f0/0x2f0
[ 104.539683][ T4307] ? do_sync+0x955/0xc40
[ 104.543960][ T4307] ? kfree+0xef/0x2a0
[ 104.548017][ T4307] do_sync+0x9b0/0xc40
[ 104.549567][ T4521] loop1: detected capacity change from 0 to 32768
[ 104.552293][ T4307] ? slot_put+0x1e0/0x1e0
[ 104.563103][ T4307] ? __lock_acquire+0x7d10/0x7d10
[ 104.568262][ T4307] ? do_raw_spin_lock+0x128/0x2f0
[ 104.573551][ T4307] ? do_raw_spin_unlock+0x11d/0x230
[ 104.578967][ T4307] gfs2_quota_sync+0x32c/0x700
[ 104.584080][ T4307] gfs2_sync_fs+0x48/0xb0
[ 104.588445][ T4307] sync_filesystem+0xe6/0x220
[ 104.593153][ T4307] generic_shutdown_super+0x6b/0x300
[ 104.598659][ T4307] kill_block_super+0x7c/0xe0
[ 104.603552][ T4307] deactivate_locked_super+0x93/0xf0
[ 104.609054][ T4307] cleanup_mnt+0x42d/0x4e0
[ 104.613507][ T4307] ? lockdep_hardirqs_on+0x94/0x140
[ 104.618910][ T4307] task_work_run+0x125/0x1a0
[ 104.623541][ T4307] exit_to_user_mode_loop+0x10f/0x130
[ 104.629027][ T4307] exit_to_user_mode_prepare+0xee/0x180
[ 104.634594][ T4307] syscall_exit_to_user_mode+0x16/0x40
[ 104.640074][ T4307] do_syscall_64+0x58/0xa0
[ 104.644513][ T4307] ? clear_bhb_loop+0x30/0x80
[ 104.649301][ T4307] ? clear_bhb_loop+0x30/0x80
[ 104.654037][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 104.659967][ T4307] RIP: 0033:0x7f71380ffa57
[ 104.664658][ T4307] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 104.685004][ T4307] RSP: 002b:00007ffee1582658 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 104.693544][ T4307] RAX: 0000000000000000 RBX: 00007f7138194048 RCX: 00007f71380ffa57
[ 104.701635][ T4307] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffee1582710
[ 104.709915][ T4307] RBP: 00007ffee1582710 R08: 00007ffee1583710 R09: 00000000ffffffff
[ 104.717934][ T4307] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffee15837a0
[ 104.725951][ T4307] R13: 00007f7138194048 R14: 0000000000018e61 R15: 00007ffee15837e0
[ 104.733990][ T4307]
[ 104.787921][ T4521] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 104.795439][ T4521] CPU: 1 PID: 4521 Comm: syz.1.77 Not tainted syzkaller #0
[ 104.802773][ T4521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 104.812887][ T4521] Call Trace:
[ 104.816286][ T4521]
[ 104.819275][ T4521] dump_stack_lvl+0x188/0x250
[ 104.823987][ T4521] ? show_regs_print_info+0x20/0x20
[ 104.829412][ T4521] ? load_image+0x400/0x400
[ 104.834042][ T4521] sysfs_create_dir_ns+0x26a/0x290
[ 104.839184][ T4521] ? sysfs_warn_dup+0xa0/0xa0
[ 104.843891][ T4521] ? do_raw_spin_unlock+0x11d/0x230
[ 104.849121][ T4521] kobject_add_internal+0x6e0/0xd90
[ 104.854542][ T4521] kobject_init_and_add+0x128/0x190
[ 104.859768][ T4521] ? lockdep_softirqs_off+0x430/0x430
[ 104.865188][ T4521] ? kobject_add+0x230/0x230
[ 104.869825][ T4521] ? __init_swait_queue_head+0xa5/0x150
[ 104.875495][ T4521] gfs2_sys_fs_add+0x24f/0x4b0
[ 104.880288][ T4521] ? gfs2_recover_set+0x240/0x240
[ 104.885333][ T4521] ? snprintf+0xe5/0x140
[ 104.889763][ T4521] ? __free_pages+0x95/0x1a0
[ 104.894483][ T4521] ? vscnprintf+0x80/0x80
[ 104.898931][ T4521] gfs2_fill_super+0x120f/0x1f00
[ 104.903908][ T4521] ? gfs2_reconfigure+0xd30/0xd30
[ 104.909082][ T4521] ? sb_set_blocksize+0xa5/0xe0
[ 104.914473][ T4521] get_tree_bdev+0x3f1/0x610
[ 104.919106][ T4521] ? gfs2_reconfigure+0xd30/0xd30
[ 104.924344][ T4521] gfs2_get_tree+0x4d/0x1e0
[ 104.928890][ T4521] vfs_get_tree+0x88/0x270
[ 104.933345][ T4521] do_new_mount+0x24a/0xa40
[ 104.937889][ T4521] __se_sys_mount+0x2e3/0x3d0
[ 104.942609][ T4521] ? __x64_sys_mount+0xc0/0xc0
[ 104.947409][ T4521] ? lockdep_hardirqs_on+0x94/0x140
[ 104.952730][ T4521] ? __x64_sys_mount+0x1c/0xc0
[ 104.957622][ T4521] do_syscall_64+0x4c/0xa0
[ 104.962071][ T4521] ? clear_bhb_loop+0x30/0x80
[ 104.966971][ T4521] ? clear_bhb_loop+0x30/0x80
[ 104.971684][ T4521] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 104.977705][ T4521] RIP: 0033:0x7f8eb29c4a8a
[ 104.982156][ T4521] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 105.002167][ T4521] RSP: 002b:00007f8eb2024e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 105.010817][ T4521] RAX: ffffffffffffffda RBX: 00007f8eb2024ee0 RCX: 00007f8eb29c4a8a
[ 105.018938][ T4521] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f8eb2024ea0
[ 105.026958][ T4521] RBP: 00002000000124c0 R08: 00007f8eb2024ee0 R09: 0000000000000000
[ 105.034974][ T4521] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 105.042979][ T4521] R13: 00007f8eb2024ea0 R14: 0000000000012616 R15: 0000200000000140
[ 105.051133][ T4521]
[ 105.054272][ T4521] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 105.067531][ T4521] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 105.324015][ T4523] loop0: detected capacity change from 0 to 32768
[ 105.388371][ T4523] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 105.395905][ T4523] CPU: 0 PID: 4523 Comm: syz.0.78 Not tainted syzkaller #0
[ 105.403137][ T4523] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 105.413463][ T4523] Call Trace:
[ 105.416773][ T4523]
[ 105.419731][ T4523] dump_stack_lvl+0x188/0x250
[ 105.424450][ T4523] ? show_regs_print_info+0x20/0x20
[ 105.429691][ T4523] ? load_image+0x400/0x400
[ 105.434325][ T4523] sysfs_create_dir_ns+0x26a/0x290
[ 105.439471][ T4523] ? sysfs_warn_dup+0xa0/0xa0
[ 105.444182][ T4523] ? do_raw_spin_unlock+0x11d/0x230
[ 105.449533][ T4523] kobject_add_internal+0x6e0/0xd90
[ 105.454763][ T4523] kobject_init_and_add+0x128/0x190
[ 105.459982][ T4523] ? lockdep_softirqs_off+0x430/0x430
[ 105.465389][ T4523] ? kobject_add+0x230/0x230
[ 105.469575][ T4525] loop1: detected capacity change from 0 to 32768
[ 105.470008][ T4523] ? __init_swait_queue_head+0xa5/0x150
[ 105.478850][ T4307] ==================================================================
[ 105.482068][ T4523] gfs2_sys_fs_add+0x24f/0x4b0
[ 105.490534][ T4307] BUG: KASAN: use-after-free in qd_unlock+0x30/0x2d0
[ 105.495301][ T4523] ? gfs2_recover_set+0x240/0x240
[ 105.502103][ T4307] Read of size 8 at addr ffff88806fd069c0 by task syz-executor/4307
[ 105.507143][ T4523] ? snprintf+0xe5/0x140
[ 105.515105][ T4307]
[ 105.521684][ T4523] ? __free_pages+0x95/0x1a0
[ 105.526293][ T4523] ? vscnprintf+0x80/0x80
[ 105.530659][ T4523] gfs2_fill_super+0x120f/0x1f00
[ 105.535716][ T4523] ? gfs2_reconfigure+0xd30/0xd30
[ 105.540765][ T4523] ? sb_set_blocksize+0xa5/0xe0
[ 105.545708][ T4523] get_tree_bdev+0x3f1/0x610
[ 105.550420][ T4523] ? gfs2_reconfigure+0xd30/0xd30
[ 105.555451][ T4523] gfs2_get_tree+0x4d/0x1e0
[ 105.560323][ T4523] vfs_get_tree+0x88/0x270
[ 105.565057][ T4523] do_new_mount+0x24a/0xa40
[ 105.569685][ T4523] __se_sys_mount+0x2e3/0x3d0
[ 105.574483][ T4523] ? __x64_sys_mount+0xc0/0xc0
[ 105.579276][ T4523] ? lockdep_hardirqs_on+0x94/0x140
[ 105.584489][ T4523] ? __x64_sys_mount+0x1c/0xc0
[ 105.589347][ T4523] do_syscall_64+0x4c/0xa0
[ 105.593775][ T4523] ? clear_bhb_loop+0x30/0x80
[ 105.598488][ T4523] ? clear_bhb_loop+0x30/0x80
[ 105.603173][ T4523] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 105.609178][ T4523] RIP: 0033:0x7fd8ff296a8a
[ 105.613692][ T4523] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 105.633493][ T4523] RSP: 002b:00007fd8fe8f6e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 105.642093][ T4523] RAX: ffffffffffffffda RBX: 00007fd8fe8f6ee0 RCX: 00007fd8ff296a8a
[ 105.650074][ T4523] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fd8fe8f6ea0
[ 105.658054][ T4523] RBP: 00002000000124c0 R08: 00007fd8fe8f6ee0 R09: 0000000000000000
[ 105.666052][ T4523] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 105.674238][ T4523] R13: 00007fd8fe8f6ea0 R14: 0000000000012616 R15: 0000200000000140
[ 105.682562][ T4523]
[ 105.685611][ T4307] CPU: 1 PID: 4307 Comm: syz-executor Not tainted syzkaller #0
[ 105.685745][ T4523] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 105.693462][ T4307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 105.706722][ T4523] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 105.716733][ T4307] Call Trace:
[ 105.716752][ T4307]
[ 105.716763][ T4307] dump_stack_lvl+0x188/0x250
[ 105.716793][ T4307] ? show_regs_print_info+0x20/0x20
[ 105.716815][ T4307] ? _printk+0xda/0x130
[ 105.716836][ T4307] ? load_image+0x400/0x400
[ 105.748562][ T4307] ? _raw_spin_lock_irqsave+0xbc/0x100
[ 105.754263][ T4307] print_address_description+0x60/0x2d0
[ 105.759929][ T4307] ? qd_unlock+0x30/0x2d0
[ 105.764289][ T4307] kasan_report+0xdf/0x130
[ 105.768827][ T4307] ? qd_unlock+0x30/0x2d0
[ 105.773370][ T4307] kasan_check_range+0x235/0x290
[ 105.778532][ T4307] qd_unlock+0x30/0x2d0
[ 105.782733][ T4307] gfs2_quota_sync+0x5cf/0x700
[ 105.787567][ T4307] gfs2_sync_fs+0x48/0xb0
[ 105.791942][ T4307] sync_filesystem+0xe6/0x220
[ 105.796773][ T4307] generic_shutdown_super+0x6b/0x300
[ 105.802280][ T4307] kill_block_super+0x7c/0xe0
[ 105.807101][ T4307] deactivate_locked_super+0x93/0xf0
[ 105.812432][ T4307] cleanup_mnt+0x42d/0x4e0
[ 105.816908][ T4307] ? lockdep_hardirqs_on+0x94/0x140
[ 105.822273][ T4307] task_work_run+0x125/0x1a0
[ 105.827020][ T4307] exit_to_user_mode_loop+0x10f/0x130
[ 105.832425][ T4307] exit_to_user_mode_prepare+0xee/0x180
[ 105.838004][ T4307] syscall_exit_to_user_mode+0x16/0x40
[ 105.843513][ T4307] do_syscall_64+0x58/0xa0
[ 105.848078][ T4307] ? clear_bhb_loop+0x30/0x80
[ 105.852781][ T4307] ? clear_bhb_loop+0x30/0x80
[ 105.857659][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 105.863588][ T4307] RIP: 0033:0x7f71380ffa57
[ 105.868042][ T4307] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 105.887898][ T4307] RSP: 002b:00007ffee1582658 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 105.896532][ T4307] RAX: 0000000000000000 RBX: 00007f7138194048 RCX: 00007f71380ffa57
[ 105.904802][ T4307] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffee1582710
[ 105.912815][ T4307] RBP: 00007ffee1582710 R08: 00007ffee1583710 R09: 00000000ffffffff
[ 105.921371][ T4307] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffee15837a0
[ 105.929468][ T4307] R13: 00007f7138194048 R14: 0000000000018e61 R15: 00007ffee15837e0
[ 105.938206][ T4307]
[ 105.941249][ T4307]
[ 105.943593][ T4307] Allocated by task 4483:
[ 105.947942][ T4307] __kasan_slab_alloc+0x9c/0xd0
[ 105.952944][ T4307] slab_post_alloc_hook+0x4c/0x380
[ 105.958085][ T4307] kmem_cache_alloc+0x100/0x290
[ 105.962969][ T4307] qd_alloc+0x50/0x260
[ 105.967074][ T4307] gfs2_quota_init+0x74e/0xea0
[ 105.971865][ T4307] gfs2_make_fs_rw+0x414/0x580
[ 105.976654][ T4307] gfs2_fill_super+0x1837/0x1f00
[ 105.981627][ T4307] get_tree_bdev+0x3f1/0x610
[ 105.986273][ T4307] gfs2_get_tree+0x4d/0x1e0
[ 105.990827][ T4307] vfs_get_tree+0x88/0x270
[ 105.995273][ T4307] do_new_mount+0x24a/0xa40
[ 105.999920][ T4307] __se_sys_mount+0x2e3/0x3d0
[ 106.004629][ T4307] do_syscall_64+0x4c/0xa0
[ 106.009074][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 106.015304][ T4307]
[ 106.017735][ T4307] Freed by task 14:
[ 106.021748][ T4307] kasan_set_track+0x4b/0x70
[ 106.026460][ T4307] kasan_set_free_info+0x1f/0x40
[ 106.031511][ T4307] ____kasan_slab_free+0xd5/0x110
[ 106.036565][ T4307] slab_free_freelist_hook+0xea/0x170
[ 106.041967][ T4307] kmem_cache_free+0x8f/0x210
[ 106.046925][ T4307] rcu_core+0x9d2/0x1670
[ 106.051484][ T4307] handle_softirqs+0x339/0x830
[ 106.056284][ T4307] run_ksoftirqd+0xa4/0x100
[ 106.060821][ T4307] smpboot_thread_fn+0x4f6/0x970
[ 106.065792][ T4307] kthread+0x436/0x520
[ 106.070060][ T4307] ret_from_fork+0x1f/0x30
[ 106.074501][ T4307]
[ 106.076858][ T4307] Last potentially related work creation:
[ 106.082676][ T4307] kasan_save_stack+0x35/0x60
[ 106.087379][ T4307] kasan_record_aux_stack+0xb8/0x100
[ 106.092696][ T4307] call_rcu+0x189/0x950
[ 106.096878][ T4307] gfs2_quota_cleanup+0x43c/0x6a0
[ 106.102206][ T4307] gfs2_make_fs_ro+0x440/0x620
[ 106.107112][ T4307] gfs2_withdraw+0x610/0x1490
[ 106.112036][ T4307] gfs2_log_flush+0x1e1a/0x2600
[ 106.117035][ T4307] do_sync+0x9b0/0xc40
[ 106.121236][ T4307] gfs2_quota_sync+0x32c/0x700
[ 106.126054][ T4307] gfs2_sync_fs+0x48/0xb0
[ 106.130415][ T4307] sync_filesystem+0xe6/0x220
[ 106.135125][ T4307] generic_shutdown_super+0x6b/0x300
[ 106.140598][ T4307] kill_block_super+0x7c/0xe0
[ 106.145329][ T4307] deactivate_locked_super+0x93/0xf0
[ 106.150648][ T4307] cleanup_mnt+0x42d/0x4e0
[ 106.155098][ T4307] task_work_run+0x125/0x1a0
[ 106.159724][ T4307] exit_to_user_mode_loop+0x10f/0x130
[ 106.165320][ T4307] exit_to_user_mode_prepare+0xee/0x180
[ 106.170904][ T4307] syscall_exit_to_user_mode+0x16/0x40
[ 106.176538][ T4307] do_syscall_64+0x58/0xa0
[ 106.181150][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 106.187347][ T4307]
[ 106.189834][ T4307] The buggy address belongs to the object at ffff88806fd06930
[ 106.189834][ T4307] which belongs to the cache gfs2_quotad of size 272
[ 106.203913][ T4307] The buggy address is located 144 bytes inside of
[ 106.203913][ T4307] 272-byte region [ffff88806fd06930, ffff88806fd06a40)
[ 106.217413][ T4307] The buggy address belongs to the page:
[ 106.223155][ T4307] page:ffffea0001bf4180 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88806fd062a0 pfn:0x6fd06
[ 106.234640][ T4307] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
[ 106.242391][ T4307] raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888146c63140
[ 106.251303][ T4307] raw: ffff88806fd062a0 00000000800c0009 00000001ffffffff 0000000000000000
[ 106.260023][ T4307] page dumped because: kasan: bad access detected
[ 106.266547][ T4307] page_owner tracks the page as allocated
[ 106.272385][ T4307] page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 4348, ts 76388384460, free_ts 75012583809
[ 106.291536][ T4307] get_page_from_freelist+0x1bbd/0x1ca0
[ 106.297293][ T4307] __alloc_pages+0x1ee/0x480
[ 106.302008][ T4307] new_slab+0xc0/0x4b0
[ 106.306104][ T4307] ___slab_alloc+0x80a/0xdd0
[ 106.310717][ T4307] kmem_cache_alloc+0x195/0x290
[ 106.315764][ T4307] qd_alloc+0x50/0x260
[ 106.319856][ T4307] gfs2_quota_init+0x74e/0xea0
[ 106.324647][ T4307] gfs2_make_fs_rw+0x414/0x580
[ 106.329428][ T4307] gfs2_fill_super+0x1837/0x1f00
[ 106.334390][ T4307] get_tree_bdev+0x3f1/0x610
[ 106.339115][ T4307] gfs2_get_tree+0x4d/0x1e0
[ 106.343769][ T4307] vfs_get_tree+0x88/0x270
[ 106.348328][ T4307] do_new_mount+0x24a/0xa40
[ 106.352968][ T4307] __se_sys_mount+0x2e3/0x3d0
[ 106.357793][ T4307] do_syscall_64+0x4c/0xa0
[ 106.362232][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 106.368248][ T4307] page last free stack trace:
[ 106.373032][ T4307] free_unref_page_prepare+0x637/0x6c0
[ 106.378614][ T4307] free_unref_page+0x8f/0x2a0
[ 106.383409][ T4307] __unfreeze_partials+0x1a5/0x200
[ 106.388555][ T4307] put_cpu_partial+0x12d/0x190
[ 106.393457][ T4307] qlist_free_all+0x35/0x90
[ 106.398184][ T4307] kasan_quarantine_reduce+0x150/0x160
[ 106.403866][ T4307] __kasan_slab_alloc+0x2f/0xd0
[ 106.408843][ T4307] slab_post_alloc_hook+0x4c/0x380
[ 106.413998][ T4307] __kmalloc+0x127/0x330
[ 106.418281][ T4307] fib_create_info+0xabc/0x24f0
[ 106.423257][ T4307] fib_table_insert+0xe4/0x1bb0
[ 106.428148][ T4307] fib_magic+0x2e1/0x3c0
[ 106.432507][ T4307] fib_add_ifaddr+0x3f7/0x5e0
[ 106.437413][ T4307] fib_netdev_event+0x35c/0x480
[ 106.442301][ T4307] raw_notifier_call_chain+0xcb/0x160
[ 106.448061][ T4307] __dev_notify_flags+0x194/0x300
[ 106.453123][ T4307]
[ 106.455561][ T4307] Memory state around the buggy address:
[ 106.461385][ T4307] ffff88806fd06880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
[ 106.469565][ T4307] ffff88806fd06900: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb
[ 106.477740][ T4307] >ffff88806fd06980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 106.485855][ T4307] ^
[ 106.492055][ T4307] ffff88806fd06a00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 106.500461][ T4307] ffff88806fd06a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 106.508945][ T4307] ==================================================================
[ 106.517031][ T4307] Disabling lock debugging due to kernel taint
[ 106.529321][ T4527] loop4: detected capacity change from 0 to 32768
[ 106.549337][ T4307] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 106.556756][ T4307] CPU: 1 PID: 4307 Comm: syz-executor Tainted: G B syzkaller #0
[ 106.565824][ T4307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 106.576389][ T4307] Call Trace:
[ 106.579798][ T4307]
[ 106.582752][ T4307] dump_stack_lvl+0x188/0x250
[ 106.587474][ T4307] ? show_regs_print_info+0x20/0x20
[ 106.592704][ T4307] ? load_image+0x400/0x400
[ 106.597546][ T4307] panic+0x2e5/0x810
[ 106.601561][ T4307] ? asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 106.607748][ T4307] ? bpf_jit_dump+0xd0/0xd0
[ 106.612281][ T4307] ? _raw_spin_unlock_irqrestore+0x10d/0x120
[ 106.618282][ T4307] ? _raw_spin_unlock+0x40/0x40
[ 106.623156][ T4307] ? qd_unlock+0x30/0x2d0
[ 106.627509][ T4307] check_panic_on_warn+0x80/0xa0
[ 106.632467][ T4307] ? qd_unlock+0x30/0x2d0
[ 106.636816][ T4307] end_report+0x6d/0xf0
[ 106.640991][ T4307] kasan_report+0x102/0x130
[ 106.645512][ T4307] ? qd_unlock+0x30/0x2d0
[ 106.649855][ T4307] kasan_check_range+0x235/0x290
[ 106.654895][ T4307] qd_unlock+0x30/0x2d0
[ 106.659195][ T4307] gfs2_quota_sync+0x5cf/0x700
[ 106.664037][ T4307] gfs2_sync_fs+0x48/0xb0
[ 106.668428][ T4307] sync_filesystem+0xe6/0x220
[ 106.673136][ T4307] generic_shutdown_super+0x6b/0x300
[ 106.678541][ T4307] kill_block_super+0x7c/0xe0
[ 106.683339][ T4307] deactivate_locked_super+0x93/0xf0
[ 106.689022][ T4307] cleanup_mnt+0x42d/0x4e0
[ 106.693494][ T4307] ? lockdep_hardirqs_on+0x94/0x140
[ 106.698981][ T4307] task_work_run+0x125/0x1a0
[ 106.703704][ T4307] exit_to_user_mode_loop+0x10f/0x130
[ 106.709126][ T4307] exit_to_user_mode_prepare+0xee/0x180
[ 106.714712][ T4307] syscall_exit_to_user_mode+0x16/0x40
[ 106.720218][ T4307] do_syscall_64+0x58/0xa0
[ 106.724944][ T4307] ? clear_bhb_loop+0x30/0x80
[ 106.729656][ T4307] ? clear_bhb_loop+0x30/0x80
[ 106.734362][ T4307] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 106.740283][ T4307] RIP: 0033:0x7f71380ffa57
[ 106.744730][ T4307] Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 106.746659][ T4529] loop2: detected capacity change from 0 to 32768
[ 106.764638][ T4307] RSP: 002b:00007ffee1582658 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 106.764672][ T4307] RAX: 0000000000000000 RBX: 00007f7138194048 RCX: 00007f71380ffa57
[ 106.764687][ T4307] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffee1582710
[ 106.764699][ T4307] RBP: 00007ffee1582710 R08: 00007ffee1583710 R09: 00000000ffffffff
[ 106.803936][ T4307] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffee15837a0
[ 106.812008][ T4307] R13: 00007f7138194048 R14: 0000000000018e61 R15: 00007ffee15837e0
[ 106.820145][ T4307]
[ 106.823301][ T4307] Kernel Offset: disabled
[ 106.827795][ T4307] Rebooting in 86400 seconds..