07f7aec5e5e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  278.076237][ T4459] RAX: ffffffffffffffda RBX: 00007f7aec5e5ee0 RCX: 00007f7aecfc7a8a
[  278.084726][ T4459] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f7aec5e5ea0
[  278.092746][ T4459] RBP: 00002000000124c0 R08: 00007f7aec5e5ee0 R09: 0000000000000000
[  278.101189][ T4459] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  278.109429][ T4459] R13: 00007f7aec5e5ea0 R14: 0000000000012616 R15: 0000200000000140
[  278.117575][ T4459]  </TASK>
[  278.136377][ T4459] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  278.187465][ T4333] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[  278.238183][ T4333] CPU: 0 PID: 4333 Comm: syz-executor Not tainted syzkaller #0
[  278.246001][ T4333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  278.256090][ T4333] Call Trace:
[  278.259403][ T4333]  <TASK>
[  278.262446][ T4333]  dump_stack_lvl+0x188/0x250
[  278.264525][ T4459] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  278.267274][ T4333]  ? show_regs_print_info+0x20/0x20
[  278.267305][ T4333]  ? load_image+0x400/0x400
[  278.267330][ T4333]  ? do_raw_spin_unlock+0x11d/0x230
[  278.289094][ T4333]  gfs2_assert_warn_i+0x18f/0x2c0
[  278.294182][ T4333]  gfs2_quota_cleanup+0x4b4/0x6a0
[  278.299346][ T4333]  gfs2_make_fs_ro+0x523/0x620
[  278.304368][ T4333]  ? gfs2_dinode_out+0xb00/0xb00
[  278.309434][ T4333]  ? gfs2_put_super+0x189/0x7d0
[  278.314521][ T4333]  ? __lock_acquire+0x7d10/0x7d10
[  278.319676][ T4333]  ? __rwlock_init+0x140/0x140
[  278.324912][ T4333]  ? hook_inode_free_security+0xa0/0xa0
[  278.330595][ T4333]  ? do_raw_spin_unlock+0x11d/0x230
[  278.336023][ T4333]  gfs2_put_super+0x1d2/0x7d0
[  278.340733][ T4333]  ? gfs2_evict_inode+0x1240/0x1240
[  278.345962][ T4333]  generic_shutdown_super+0x130/0x300
[  278.351544][ T4333]  kill_block_super+0x7c/0xe0
[  278.356438][ T4333]  deactivate_locked_super+0x93/0xf0
[  278.361860][ T4333]  cleanup_mnt+0x42d/0x4e0
[  278.364945][ T4467] loop0: detected capacity change from 0 to 32768
[  278.366298][ T4333]  ? lockdep_hardirqs_on+0x94/0x140
[  278.366326][ T4333]  task_work_run+0x125/0x1a0
[  278.366361][ T4333]  exit_to_user_mode_loop+0x10f/0x130
[  278.388752][ T4333]  exit_to_user_mode_prepare+0xee/0x180
[  278.391596][ T4467] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  278.394939][ T4333]  syscall_exit_to_user_mode+0x16/0x40
[  278.408504][ T4333]  do_syscall_64+0x58/0xa0
[  278.413309][ T4333]  ? clear_bhb_loop+0x30/0x80
[  278.418113][ T4333]  ? clear_bhb_loop+0x30/0x80
[  278.422858][ T4333]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  278.428999][ T4333] RIP: 0033:0x7fa918979a57
[  278.433533][ T4333] 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
[  278.453528][ T4333] RSP: 002b:00007fff4ffdb0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  278.462173][ T4333] RAX: 0000000000000000 RBX: 00007fa918a0e048 RCX: 00007fa918979a57
[  278.470357][ T4333] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff4ffdb180
[  278.478953][ T4333] RBP: 00007fff4ffdb180 R08: 00007fff4ffdc180 R09: 00000000ffffffff
[  278.486935][ T4333] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff4ffdc210
[  278.495072][ T4333] R13: 00007fa918a0e048 R14: 0000000000043d60 R15: 00007fff4ffdc250
[  278.503419][ T4333]  </TASK>
[  278.506479][ T4467] CPU: 1 PID: 4467 Comm: syz.0.37 Not tainted syzkaller #0
[  278.514233][ T4467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  278.524471][ T4467] Call Trace:
[  278.527780][ T4467]  <TASK>
[  278.530737][ T4467]  dump_stack_lvl+0x188/0x250
[  278.535625][ T4467]  ? show_regs_print_info+0x20/0x20
[  278.540956][ T4467]  ? load_image+0x400/0x400
[  278.545841][ T4467]  sysfs_create_dir_ns+0x26a/0x290
[  278.550982][ T4467]  ? sysfs_warn_dup+0xa0/0xa0
[  278.555665][ T4467]  ? do_raw_spin_unlock+0x11d/0x230
[  278.560957][ T4467]  kobject_add_internal+0x6e0/0xd90
[  278.566422][ T4467]  kobject_init_and_add+0x128/0x190
[  278.571903][ T4467]  ? lockdep_softirqs_off+0x430/0x430
[  278.577465][ T4467]  ? kobject_add+0x230/0x230
[  278.582368][ T4467]  ? __init_swait_queue_head+0xa5/0x150
[  278.588009][ T4467]  gfs2_sys_fs_add+0x24f/0x4b0
[  278.592881][ T4467]  ? gfs2_recover_set+0x240/0x240
[  278.598083][ T4467]  ? snprintf+0xe5/0x140
[  278.602577][ T4467]  ? __free_pages+0x95/0x1a0
[  278.607248][ T4467]  ? vscnprintf+0x80/0x80
[  278.611587][ T4467]  gfs2_fill_super+0x120f/0x1f00
[  278.616729][ T4467]  ? gfs2_reconfigure+0xd30/0xd30
[  278.621983][ T4467]  ? sb_set_blocksize+0xa5/0xe0
[  278.627292][ T4467]  get_tree_bdev+0x3f1/0x610
[  278.632201][ T4467]  ? gfs2_reconfigure+0xd30/0xd30
[  278.637608][ T4467]  gfs2_get_tree+0x4d/0x1e0
[  278.642299][ T4467]  vfs_get_tree+0x88/0x270
[  278.646715][ T4467]  do_new_mount+0x24a/0xa40
[  278.651331][ T4467]  __se_sys_mount+0x2e3/0x3d0
[  278.656796][ T4467]  ? __x64_sys_mount+0xc0/0xc0
[  278.662054][ T4467]  ? lockdep_hardirqs_on+0x94/0x140
[  278.667406][ T4467]  ? __x64_sys_mount+0x1c/0xc0
[  278.672202][ T4467]  do_syscall_64+0x4c/0xa0
[  278.676710][ T4467]  ? clear_bhb_loop+0x30/0x80
[  278.681398][ T4467]  ? clear_bhb_loop+0x30/0x80
[  278.686202][ T4467]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  278.692320][ T4467] RIP: 0033:0x7ffba635ba8a
[  278.696855][ T4467] 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
[  278.717334][ T4467] RSP: 002b:00007ffba5979e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  278.725845][ T4467] RAX: ffffffffffffffda RBX: 00007ffba5979ee0 RCX: 00007ffba635ba8a
[  278.734493][ T4467] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba5979ea0
[  278.743082][ T4467] RBP: 00002000000124c0 R08: 00007ffba5979ee0 R09: 0000000000000000
[  278.751155][ T4467] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  278.759369][ T4467] R13: 00007ffba5979ea0 R14: 0000000000012616 R15: 0000200000000140
[  278.767672][ T4467]  </TASK>
[  278.776682][ T4467] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  278.809529][ T1168] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
[  278.828494][ T1168] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[  278.861207][ T4338] device veth0_macvtap entered promiscuous mode
[  278.867366][ T4467] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  278.908162][ T4338] device veth1_macvtap entered promiscuous mode
[  279.003454][ T1168] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  279.025440][ T1168] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  279.046639][  T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[  279.101677][  T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  279.396515][ T4471] loop4: detected capacity change from 0 to 32768
[  279.414028][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[  279.435110][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  279.449335][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[  279.454459][ T4473] loop1: detected capacity change from 0 to 32768
[  279.467042][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  279.487123][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[  279.507318][ T4471] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[  279.516084][ T4471] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[  279.519692][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  279.531340][ T4471] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[  279.533251][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[  279.542473][ T4300] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[  279.551832][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  279.570169][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
[  279.583841][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  279.591964][ T4300] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[  279.595426][ T4338] batman_adv: batadv0: Interface activated: batadv_slave_0
[  279.619281][ T4473] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  279.627132][ T4473] CPU: 0 PID: 4473 Comm: syz.1.41 Not tainted syzkaller #0
[  279.634496][ T4473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  279.645174][ T4473] Call Trace:
[  279.648485][ T4473]  <TASK>
[  279.651534][ T4473]  dump_stack_lvl+0x188/0x250
[  279.656332][ T4473]  ? show_regs_print_info+0x20/0x20
[  279.661561][ T4473]  ? load_image+0x400/0x400
[  279.666195][ T4473]  sysfs_create_dir_ns+0x26a/0x290
[  279.671353][ T4473]  ? sysfs_warn_dup+0xa0/0xa0
[  279.676170][ T4473]  ? do_raw_spin_unlock+0x11d/0x230
[  279.681930][ T4473]  kobject_add_internal+0x6e0/0xd90
[  279.687260][ T4473]  kobject_init_and_add+0x128/0x190
[  279.692747][ T4473]  ? lockdep_softirqs_off+0x430/0x430
[  279.698151][ T4473]  ? kobject_add+0x230/0x230
[  279.703160][ T4473]  ? __init_swait_queue_head+0xa5/0x150
[  279.708922][ T4473]  gfs2_sys_fs_add+0x24f/0x4b0
[  279.713729][ T4473]  ? gfs2_recover_set+0x240/0x240
[  279.718791][ T4473]  ? snprintf+0xe5/0x140
[  279.723073][ T4473]  ? __free_pages+0x95/0x1a0
[  279.727700][ T4473]  ? vscnprintf+0x80/0x80
[  279.732177][ T4473]  gfs2_fill_super+0x120f/0x1f00
[  279.737263][ T4473]  ? gfs2_reconfigure+0xd30/0xd30
[  279.742356][ T4473]  ? sb_set_blocksize+0xa5/0xe0
[  279.747352][ T4473]  get_tree_bdev+0x3f1/0x610
[  279.751991][ T4473]  ? gfs2_reconfigure+0xd30/0xd30
[  279.757128][ T4473]  gfs2_get_tree+0x4d/0x1e0
[  279.757391][ T4300] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 165ms
[  279.761734][ T4473]  vfs_get_tree+0x88/0x270
[  279.773878][ T4473]  do_new_mount+0x24a/0xa40
[  279.778432][ T4473]  __se_sys_mount+0x2e3/0x3d0
[  279.783325][ T4473]  ? __x64_sys_mount+0xc0/0xc0
[  279.788122][ T4473]  ? lockdep_hardirqs_on+0x94/0x140
[  279.793377][ T4473]  ? __x64_sys_mount+0x1c/0xc0
[  279.798397][ T4473]  do_syscall_64+0x4c/0xa0
[  279.800531][  T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  279.803358][ T4473]  ? clear_bhb_loop+0x30/0x80
[  279.811770][  T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  279.815854][ T4473]  ? clear_bhb_loop+0x30/0x80
[  279.815881][ T4473]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  279.830412][ T4300] gfs2: fsid=syz:syz.0: jid=0: Done
[  279.834013][ T4473] RIP: 0033:0x7fa918979a8a
[  279.834040][ T4473] 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
[  279.861872][ T4471] gfs2: fsid=syz:syz.0: first mount done, others may mount
[  279.863878][ T4473] RSP: 002b:00007fa917fd9e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  279.863906][ T4473] RAX: ffffffffffffffda RBX: 00007fa917fd9ee0 RCX: 00007fa918979a8a
[  279.887775][ T4473] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fa917fd9ea0
[  279.895983][ T4473] RBP: 00002000000124c0 R08: 00007fa917fd9ee0 R09: 0000000000000000
[  279.904091][ T4473] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  279.912357][ T4473] R13: 00007fa917fd9ea0 R14: 0000000000012616 R15: 0000200000000140
[  279.920743][ T4473]  </TASK>
[  279.924368][ T4473] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  279.937889][ T4473] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  279.949812][  T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[  279.971664][  T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[  279.981141][  T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[  279.991866][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[  280.024736][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  280.364974][ T4478] loop0: detected capacity change from 0 to 32768
[  280.375469][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[  280.440673][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  280.480163][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[  280.491595][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  280.501928][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[  280.517058][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  280.532417][ T4338] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
[  280.544068][ T4338] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[  280.591860][ T4471] gfs2: fsid=syz:syz.0: found 1 quota changes
[  280.654751][ T4338] batman_adv: batadv0: Interface activated: batadv_slave_1
[  280.670293][ T4478] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  280.677992][ T4478] CPU: 0 PID: 4478 Comm: syz.0.44 Not tainted syzkaller #0
[  280.685508][ T4478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  280.695864][ T4478] Call Trace:
[  280.699173][ T4478]  <TASK>
[  280.702135][ T4478]  dump_stack_lvl+0x188/0x250
[  280.706852][ T4478]  ? show_regs_print_info+0x20/0x20
[  280.712470][ T4478]  ? load_image+0x400/0x400
[  280.717020][ T4478]  sysfs_create_dir_ns+0x26a/0x290
[  280.722520][ T4478]  ? sysfs_warn_dup+0xa0/0xa0
[  280.727229][ T4478]  ? do_raw_spin_unlock+0x11d/0x230
[  280.732573][ T4478]  kobject_add_internal+0x6e0/0xd90
[  280.737827][ T4478]  kobject_init_and_add+0x128/0x190
[  280.743420][ T4478]  ? lockdep_softirqs_off+0x430/0x430
[  280.748843][ T4478]  ? kobject_add+0x230/0x230
[  280.753487][ T4478]  ? __init_swait_queue_head+0xa5/0x150
[  280.759162][ T4478]  gfs2_sys_fs_add+0x24f/0x4b0
[  280.764086][ T4478]  ? gfs2_recover_set+0x240/0x240
[  280.769316][ T4478]  ? snprintf+0xe5/0x140
[  280.773709][ T4478]  ? __free_pages+0x95/0x1a0
[  280.778518][ T4478]  ? vscnprintf+0x80/0x80
[  280.783011][ T4478]  gfs2_fill_super+0x120f/0x1f00
[  280.788343][ T4478]  ? gfs2_reconfigure+0xd30/0xd30
[  280.793436][ T4478]  ? sb_set_blocksize+0xa5/0xe0
[  280.798599][ T4478]  get_tree_bdev+0x3f1/0x610
[  280.803571][ T4478]  ? gfs2_reconfigure+0xd30/0xd30
[  280.808643][ T4478]  gfs2_get_tree+0x4d/0x1e0
[  280.813187][ T4478]  vfs_get_tree+0x88/0x270
[  280.817771][ T4478]  do_new_mount+0x24a/0xa40
[  280.822582][ T4478]  __se_sys_mount+0x2e3/0x3d0
[  280.827305][ T4478]  ? __x64_sys_mount+0xc0/0xc0
[  280.832179][ T4478]  ? lockdep_hardirqs_on+0x94/0x140
[  280.837410][ T4478]  ? __x64_sys_mount+0x1c/0xc0
[  280.842300][ T4478]  do_syscall_64+0x4c/0xa0
[  280.846843][ T4478]  ? clear_bhb_loop+0x30/0x80
[  280.851672][ T4478]  ? clear_bhb_loop+0x30/0x80
[  280.854879][ T4338] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[  280.856466][ T4478]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  280.856503][ T4478] RIP: 0033:0x7ffba635ba8a
[  280.865462][ T4338] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[  280.871521][ T4478] 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
[  280.871538][ T4478] RSP: 002b:00007ffba59bbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  280.875976][ T4338] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[  280.884819][ T4478] RAX: ffffffffffffffda RBX: 00007ffba59bbee0 RCX: 00007ffba635ba8a
[  280.884836][ T4478] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba59bbea0
[  280.884850][ T4478] RBP: 00002000000124c0 R08: 00007ffba59bbee0 R09: 0000000000000000
[  280.908585][ T4336] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[  280.913612][ T4478] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  280.935373][ T4338] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[  280.938604][ T4478] R13: 00007ffba59bbea0 R14: 0000000000012616 R15: 0000200000000140
[  280.938639][ T4478]  </TASK>
[  280.938780][ T4478] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  280.989424][ T4336] CPU: 1 PID: 4336 Comm: syz-executor Not tainted syzkaller #0
[  280.990381][ T4478] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  281.004073][ T4336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  281.004086][ T4336] Call Trace:
[  281.004102][ T4336]  <TASK>
[  281.004111][ T4336]  dump_stack_lvl+0x188/0x250
[  281.004141][ T4336]  ? show_regs_print_info+0x20/0x20
[  281.004166][ T4336]  ? load_image+0x400/0x400
[  281.050213][ T4336]  ? do_raw_spin_unlock+0x11d/0x230
[  281.055736][ T4336]  gfs2_assert_warn_i+0x18f/0x2c0
[  281.060902][ T4336]  gfs2_quota_cleanup+0x4b4/0x6a0
[  281.066231][ T4336]  gfs2_make_fs_ro+0x523/0x620
[  281.071027][ T4336]  ? gfs2_dinode_out+0xb00/0xb00
[  281.075997][ T4336]  ? gfs2_put_super+0x189/0x7d0
[  281.080879][ T4336]  ? __lock_acquire+0x7d10/0x7d10
[  281.086116][ T4336]  ? __rwlock_init+0x140/0x140
[  281.091006][ T4336]  ? hook_inode_free_security+0xa0/0xa0
[  281.097033][ T4336]  ? do_raw_spin_unlock+0x11d/0x230
[  281.102754][ T4336]  gfs2_put_super+0x1d2/0x7d0
[  281.107487][ T4336]  ? gfs2_evict_inode+0x1240/0x1240
[  281.112813][ T4336]  generic_shutdown_super+0x130/0x300
[  281.118421][ T4336]  kill_block_super+0x7c/0xe0
[  281.123310][ T4336]  deactivate_locked_super+0x93/0xf0
[  281.128638][ T4336]  cleanup_mnt+0x42d/0x4e0
[  281.133360][ T4336]  ? lockdep_hardirqs_on+0x94/0x140
[  281.138595][ T4336]  task_work_run+0x125/0x1a0
[  281.143567][ T4336]  exit_to_user_mode_loop+0x10f/0x130
[  281.149242][ T4336]  exit_to_user_mode_prepare+0xee/0x180
[  281.155104][ T4336]  syscall_exit_to_user_mode+0x16/0x40
[  281.160673][ T4336]  do_syscall_64+0x58/0xa0
[  281.165309][ T4336]  ? clear_bhb_loop+0x30/0x80
[  281.170184][ T4336]  ? clear_bhb_loop+0x30/0x80
[  281.175004][ T4336]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  281.181072][ T4336] RIP: 0033:0x7f7aecfc7a57
[  281.185530][ T4336] 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
[  281.206070][ T4336] RSP: 002b:00007ffec213bc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  281.214720][ T4336] RAX: 0000000000000000 RBX: 00007f7aed05c048 RCX: 00007f7aecfc7a57
[  281.223080][ T4336] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffec213bce0
[  281.231551][ T4336] RBP: 00007ffec213bce0 R08: 00007ffec213cce0 R09: 00000000ffffffff
[  281.239727][ T4336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec213cd70
[  281.247728][ T4336] R13: 00007f7aed05c048 R14: 00000000000441fd R15: 00007ffec213cdb0
[  281.255888][ T4336]  </TASK>
[  281.288621][ T4481] loop1: detected capacity change from 0 to 32768
[  281.633275][ T4485] loop2: detected capacity change from 0 to 32768
[  281.648240][ T4481] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[  281.656824][ T4481] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[  281.667881][ T4481] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[  281.677836][ T4395] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[  281.684943][ T4395] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[  281.809045][ T4485] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  281.816739][ T4485] CPU: 1 PID: 4485 Comm: syz.2.19 Not tainted syzkaller #0
[  281.824236][ T4485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  281.834902][ T4485] Call Trace:
[  281.838655][ T4485]  <TASK>
[  281.841705][ T4485]  dump_stack_lvl+0x188/0x250
[  281.846506][ T4485]  ? show_regs_print_info+0x20/0x20
[  281.852112][ T4485]  ? load_image+0x400/0x400
[  281.856862][ T4485]  sysfs_create_dir_ns+0x26a/0x290
[  281.862008][ T4485]  ? sysfs_warn_dup+0xa0/0xa0
[  281.866717][ T4485]  ? do_raw_spin_unlock+0x11d/0x230
[  281.872654][ T4485]  kobject_add_internal+0x6e0/0xd90
[  281.878083][ T4485]  kobject_init_and_add+0x128/0x190
[  281.883349][ T4485]  ? lockdep_softirqs_off+0x430/0x430
[  281.888948][ T4485]  ? kobject_add+0x230/0x230
[  281.893750][ T4485]  ? __init_swait_queue_head+0xa5/0x150
[  281.899505][ T4485]  gfs2_sys_fs_add+0x24f/0x4b0
[  281.904588][ T4485]  ? gfs2_recover_set+0x240/0x240
[  281.909841][ T4485]  ? snprintf+0xe5/0x140
[  281.914408][ T4485]  ? __free_pages+0x95/0x1a0
[  281.919152][ T4485]  ? vscnprintf+0x80/0x80
[  281.923536][ T4485]  gfs2_fill_super+0x120f/0x1f00
[  281.928870][ T4485]  ? gfs2_reconfigure+0xd30/0xd30
[  281.934053][ T4485]  ? sb_set_blocksize+0xa5/0xe0
[  281.938955][ T4485]  get_tree_bdev+0x3f1/0x610
[  281.943686][ T4485]  ? gfs2_reconfigure+0xd30/0xd30
[  281.948939][ T4485]  gfs2_get_tree+0x4d/0x1e0
[  281.953492][ T4485]  vfs_get_tree+0x88/0x270
[  281.955864][ T4422] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[  281.958050][ T4485]  do_new_mount+0x24a/0xa40
[  281.958085][ T4485]  __se_sys_mount+0x2e3/0x3d0
[  281.958112][ T4485]  ? __x64_sys_mount+0xc0/0xc0
[  281.958136][ T4485]  ? lockdep_hardirqs_on+0x94/0x140
[  281.958157][ T4485]  ? __x64_sys_mount+0x1c/0xc0
[  281.991375][ T4485]  do_syscall_64+0x4c/0xa0
[  281.995845][ T4485]  ? clear_bhb_loop+0x30/0x80
[  282.001192][ T4485]  ? clear_bhb_loop+0x30/0x80
[  282.002894][ T4422] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[  282.006383][ T4485]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  282.006412][ T4485] RIP: 0033:0x7f6a552d6a8a
[  282.006434][ 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
[  282.006451][ T4485] RSP: 002b:00007f6a54936e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  282.006476][ T4485] RAX: ffffffffffffffda RBX: 00007f6a54936ee0 RCX: 00007f6a552d6a8a
[  282.006491][ T4485] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f6a54936ea0
[  282.006506][ T4485] RBP: 00002000000124c0 R08: 00007f6a54936ee0 R09: 0000000000000000
[  282.080839][ T4485] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  282.089223][ T4485] R13: 00007f6a54936ea0 R14: 0000000000012616 R15: 0000200000000140
[  282.098124][ T4485]  </TASK>
[  282.102207][ T4485] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  282.116658][ T4485] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  282.138413][ T4487] loop0: detected capacity change from 0 to 32768
[  282.146732][ T4395] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 461ms
[  282.154426][ T4395] gfs2: fsid=syz:syz.0: jid=0: Done
[  282.164463][ T4481] gfs2: fsid=syz:syz.0: first mount done, others may mount
[  282.197253][ T4487] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  282.205520][ T4487] CPU: 0 PID: 4487 Comm: syz.0.48 Not tainted syzkaller #0
[  282.212844][ T4487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  282.222952][ T4487] Call Trace:
[  282.226377][ T4487]  <TASK>
[  282.229458][ T4487]  dump_stack_lvl+0x188/0x250
[  282.234181][ T4487]  ? show_regs_print_info+0x20/0x20
[  282.239423][ T4487]  ? load_image+0x400/0x400
[  282.244142][ T4487]  sysfs_create_dir_ns+0x26a/0x290
[  282.249683][ T4487]  ? sysfs_warn_dup+0xa0/0xa0
[  282.254399][ T4487]  ? do_raw_spin_unlock+0x11d/0x230
[  282.259827][ T4487]  kobject_add_internal+0x6e0/0xd90
[  282.265163][ T4487]  kobject_init_and_add+0x128/0x190
[  282.270391][ T4487]  ? lockdep_softirqs_off+0x430/0x430
[  282.276123][ T4487]  ? kobject_add+0x230/0x230
[  282.280754][ T4487]  ? __init_swait_queue_head+0xa5/0x150
[  282.286427][ T4487]  gfs2_sys_fs_add+0x24f/0x4b0
[  282.291397][ T4487]  ? gfs2_recover_set+0x240/0x240
[  282.296636][ T4487]  ? snprintf+0xe5/0x140
[  282.300901][ T4487]  ? __free_pages+0x95/0x1a0
[  282.305518][ T4487]  ? vscnprintf+0x80/0x80
[  282.309906][ T4487]  gfs2_fill_super+0x120f/0x1f00
[  282.315144][ T4487]  ? gfs2_reconfigure+0xd30/0xd30
[  282.320478][ T4487]  ? sb_set_blocksize+0xa5/0xe0
[  282.325355][ T4487]  get_tree_bdev+0x3f1/0x610
[  282.329990][ T4487]  ? gfs2_reconfigure+0xd30/0xd30
[  282.335141][ T4487]  gfs2_get_tree+0x4d/0x1e0
[  282.339677][ T4487]  vfs_get_tree+0x88/0x270
[  282.344303][ T4487]  do_new_mount+0x24a/0xa40
[  282.348923][ T4487]  __se_sys_mount+0x2e3/0x3d0
[  282.353800][ T4487]  ? __x64_sys_mount+0xc0/0xc0
[  282.358589][ T4487]  ? lockdep_hardirqs_on+0x94/0x140
[  282.363910][ T4487]  ? __x64_sys_mount+0x1c/0xc0
[  282.368993][ T4487]  do_syscall_64+0x4c/0xa0
[  282.373839][ T4487]  ? clear_bhb_loop+0x30/0x80
[  282.378635][ T4487]  ? clear_bhb_loop+0x30/0x80
[  282.383457][ T4487]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  282.389489][ T4487] RIP: 0033:0x7ffba635ba8a
[  282.394217][ T4487] 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
[  282.414395][ T4487] RSP: 002b:00007ffba59bbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  282.422865][ T4487] RAX: ffffffffffffffda RBX: 00007ffba59bbee0 RCX: 00007ffba635ba8a
[  282.430963][ T4487] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba59bbea0
[  282.439221][ T4487] RBP: 00002000000124c0 R08: 00007ffba59bbee0 R09: 0000000000000000
[  282.447399][ T4487] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  282.455497][ T4487] R13: 00007ffba59bbea0 R14: 0000000000012616 R15: 0000200000000140
2026/04/05 10:10:03 executed programs: 41
[  282.463904][ T4487]  </TASK>
[  282.467160][ T4487] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  282.480734][ T4487] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  282.504285][ T4491] loop4: detected capacity change from 0 to 32768
[  282.615638][ T4491] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  282.623366][ T4491] CPU: 1 PID: 4491 Comm: syz.4.46 Not tainted syzkaller #0
[  282.630989][ T4491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  282.641351][ T4491] Call Trace:
[  282.644664][ T4491]  <TASK>
[  282.648063][ T4491]  dump_stack_lvl+0x188/0x250
[  282.652982][ T4491]  ? show_regs_print_info+0x20/0x20
[  282.658230][ T4491]  ? load_image+0x400/0x400
[  282.662827][ T4491]  sysfs_create_dir_ns+0x26a/0x290
[  282.668237][ T4491]  ? sysfs_warn_dup+0xa0/0xa0
[  282.672943][ T4491]  ? do_raw_spin_unlock+0x11d/0x230
[  282.678176][ T4491]  kobject_add_internal+0x6e0/0xd90
[  282.683669][ T4491]  kobject_init_and_add+0x128/0x190
[  282.688980][ T4491]  ? lockdep_softirqs_off+0x430/0x430
[  282.694669][ T4491]  ? kobject_add+0x230/0x230
[  282.699419][ T4491]  ? __init_swait_queue_head+0xa5/0x150
[  282.705194][ T4491]  gfs2_sys_fs_add+0x24f/0x4b0
[  282.710261][ T4491]  ? gfs2_recover_set+0x240/0x240
[  282.715413][ T4491]  ? snprintf+0xe5/0x140
[  282.719794][ T4491]  ? __free_pages+0x95/0x1a0
[  282.724652][ T4491]  ? vscnprintf+0x80/0x80
[  282.729125][ T4491]  gfs2_fill_super+0x120f/0x1f00
[  282.734233][ T4491]  ? gfs2_reconfigure+0xd30/0xd30
[  282.739510][ T4491]  ? sb_set_blocksize+0xa5/0xe0
[  282.744415][ T4491]  get_tree_bdev+0x3f1/0x610
[  282.749148][ T4491]  ? gfs2_reconfigure+0xd30/0xd30
[  282.754392][ T4491]  gfs2_get_tree+0x4d/0x1e0
[  282.759027][ T4491]  vfs_get_tree+0x88/0x270
[  282.763944][ T4491]  do_new_mount+0x24a/0xa40
[  282.768583][ T4491]  __se_sys_mount+0x2e3/0x3d0
[  282.773300][ T4491]  ? __x64_sys_mount+0xc0/0xc0
[  282.778103][ T4491]  ? lockdep_hardirqs_on+0x94/0x140
[  282.783822][ T4491]  ? __x64_sys_mount+0x1c/0xc0
[  282.788835][ T4491]  do_syscall_64+0x4c/0xa0
[  282.793414][ T4491]  ? clear_bhb_loop+0x30/0x80
[  282.798132][ T4491]  ? clear_bhb_loop+0x30/0x80
[  282.802845][ T4491]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  282.808961][ T4491] RIP: 0033:0x7f7aecfc7a8a
[  282.813584][ T4491] 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
[  282.833578][ T4491] RSP: 002b:00007f7aec627e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  282.842030][ T4491] RAX: ffffffffffffffda RBX: 00007f7aec627ee0 RCX: 00007f7aecfc7a8a
[  282.850028][ T4491] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f7aec627ea0
[  282.858179][ T4491] RBP: 00002000000124c0 R08: 00007f7aec627ee0 R09: 0000000000000000
[  282.866265][ T4491] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  282.874452][ T4491] R13: 00007f7aec627ea0 R14: 0000000000012616 R15: 0000200000000140
[  282.882635][ T4491]  </TASK>
[  282.887301][ T4491] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  282.901946][ T4491] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  283.022745][ T4494] loop2: detected capacity change from 0 to 32768
[  283.090212][ T4494] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  283.098098][ T4494] CPU: 0 PID: 4494 Comm: syz.2.49 Not tainted syzkaller #0
[  283.105693][ T4494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  283.116080][ T4494] Call Trace:
[  283.119392][ T4494]  <TASK>
[  283.122446][ T4494]  dump_stack_lvl+0x188/0x250
[  283.127160][ T4494]  ? show_regs_print_info+0x20/0x20
[  283.132833][ T4494]  ? load_image+0x400/0x400
[  283.137407][ T4494]  sysfs_create_dir_ns+0x26a/0x290
[  283.142684][ T4494]  ? sysfs_warn_dup+0xa0/0xa0
[  283.147405][ T4494]  ? do_raw_spin_unlock+0x11d/0x230
[  283.152956][ T4494]  kobject_add_internal+0x6e0/0xd90
[  283.158208][ T4494]  kobject_init_and_add+0x128/0x190
[  283.163459][ T4494]  ? lockdep_softirqs_off+0x430/0x430
[  283.169408][ T4494]  ? kobject_add+0x230/0x230
[  283.174145][ T4494]  ? __init_swait_queue_head+0xa5/0x150
[  283.179859][ T4494]  gfs2_sys_fs_add+0x24f/0x4b0
[  283.184940][ T4494]  ? gfs2_recover_set+0x240/0x240
[  283.190094][ T4494]  ? snprintf+0xe5/0x140
[  283.194489][ T4494]  ? __free_pages+0x95/0x1a0
[  283.199122][ T4494]  ? vscnprintf+0x80/0x80
[  283.203676][ T4494]  gfs2_fill_super+0x120f/0x1f00
[  283.208665][ T4494]  ? gfs2_reconfigure+0xd30/0xd30
[  283.213951][ T4494]  ? sb_set_blocksize+0xa5/0xe0
[  283.219016][ T4494]  get_tree_bdev+0x3f1/0x610
[  283.223961][ T4494]  ? gfs2_reconfigure+0xd30/0xd30
[  283.229074][ T4494]  gfs2_get_tree+0x4d/0x1e0
[  283.233815][ T4494]  vfs_get_tree+0x88/0x270
[  283.238270][ T4494]  do_new_mount+0x24a/0xa40
[  283.243397][ T4494]  __se_sys_mount+0x2e3/0x3d0
[  283.248128][ T4494]  ? __x64_sys_mount+0xc0/0xc0
[  283.252933][ T4494]  ? lockdep_hardirqs_on+0x94/0x140
[  283.257603][ T4496] loop0: detected capacity change from 0 to 32768
[  283.258262][ T4494]  ? __x64_sys_mount+0x1c/0xc0
[  283.269872][ T4494]  do_syscall_64+0x4c/0xa0
[  283.274693][ T4494]  ? clear_bhb_loop+0x30/0x80
[  283.279524][ T4494]  ? clear_bhb_loop+0x30/0x80
[  283.284844][ T4494]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  283.291084][ T4494] RIP: 0033:0x7f6a552d6a8a
[  283.295535][ T4494] 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
[  283.317583][ T4481] gfs2: fsid=syz:syz.0: found 1 quota changes
[  283.318101][ T4494] RSP: 002b:00007f6a54936e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  283.333101][ T4494] RAX: ffffffffffffffda RBX: 00007f6a54936ee0 RCX: 00007f6a552d6a8a
[  283.341546][ T4494] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f6a54936ea0
[  283.349913][ T4494] RBP: 00002000000124c0 R08: 00007f6a54936ee0 R09: 0000000000000000
[  283.358179][ T4494] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  283.366268][ T4494] R13: 00007f6a54936ea0 R14: 0000000000012616 R15: 0000200000000140
[  283.374484][ T4494]  </TASK>
[  283.378223][ T4494] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  283.392243][ T4494] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  283.401395][ T4414] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  283.442534][ T4414] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  283.485624][ T4496] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  283.489516][  T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  283.493499][ T4496] CPU: 1 PID: 4496 Comm: syz.0.50 Not tainted syzkaller #0
[  283.508446][ T4496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  283.510285][ T1168] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  283.518609][ T4496] Call Trace:
[  283.518624][ T4496]  <TASK>
[  283.518633][ T4496]  dump_stack_lvl+0x188/0x250
[  283.518663][ T4496]  ? show_regs_print_info+0x20/0x20
[  283.543864][ T4496]  ? load_image+0x400/0x400
[  283.548428][ T4496]  sysfs_create_dir_ns+0x26a/0x290
[  283.553673][ T4496]  ? sysfs_warn_dup+0xa0/0xa0
[  283.558463][ T4496]  ? do_raw_spin_unlock+0x11d/0x230
[  283.563805][ T4496]  kobject_add_internal+0x6e0/0xd90
[  283.569052][ T4496]  kobject_init_and_add+0x128/0x190
[  283.574728][ T4496]  ? lockdep_softirqs_off+0x430/0x430
[  283.580329][ T4496]  ? kobject_add+0x230/0x230
[  283.585051][ T4496]  ? __init_swait_queue_head+0xa5/0x150
[  283.585560][ T1168] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  283.590745][ T4496]  gfs2_sys_fs_add+0x24f/0x4b0
[  283.590776][ T4496]  ? gfs2_recover_set+0x240/0x240
[  283.590798][ T4496]  ? snprintf+0xe5/0x140
[  283.590816][ T4496]  ? __free_pages+0x95/0x1a0
[  283.590840][ T4496]  ? vscnprintf+0x80/0x80
[  283.599866][ T4333] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[  283.603278][ T4496]  gfs2_fill_super+0x120f/0x1f00
[  283.641230][ T4496]  ? gfs2_reconfigure+0xd30/0xd30
[  283.646397][ T4496]  ? sb_set_blocksize+0xa5/0xe0
[  283.651279][ T4496]  get_tree_bdev+0x3f1/0x610
[  283.655896][ T4496]  ? gfs2_reconfigure+0xd30/0xd30
[  283.661049][ T4496]  gfs2_get_tree+0x4d/0x1e0
[  283.665693][ T4496]  vfs_get_tree+0x88/0x270
[  283.670130][ T4496]  do_new_mount+0x24a/0xa40
[  283.674683][ T4496]  __se_sys_mount+0x2e3/0x3d0
[  283.675529][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[  283.679477][ T4496]  ? __x64_sys_mount+0xc0/0xc0
[  283.679507][ T4496]  ? lockdep_hardirqs_on+0x94/0x140
[  283.679530][ T4496]  ? __x64_sys_mount+0x1c/0xc0
[  283.679553][ T4496]  do_syscall_64+0x4c/0xa0
[  283.706555][ T4496]  ? clear_bhb_loop+0x30/0x80
[  283.711353][ T4496]  ? clear_bhb_loop+0x30/0x80
[  283.716783][ T4496]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  283.722847][ T4496] RIP: 0033:0x7ffba635ba8a
[  283.727468][ T4496] 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
[  283.747739][ T4496] RSP: 002b:00007ffba59bbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  283.756926][ T4496] RAX: ffffffffffffffda RBX: 00007ffba59bbee0 RCX: 00007ffba635ba8a
[  283.765111][ T4496] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba59bbea0
[  283.773203][ T4496] RBP: 00002000000124c0 R08: 00007ffba59bbee0 R09: 0000000000000000
[  283.781769][ T4496] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  283.790175][ T4496] R13: 00007ffba59bbea0 R14: 0000000000012616 R15: 0000200000000140
[  283.798367][ T4496]  </TASK>
[  283.803993][ T4496] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  283.818089][ T4496] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  283.832349][ T4333] CPU: 1 PID: 4333 Comm: syz-executor Not tainted syzkaller #0
[  283.839980][ T4333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  283.850147][ T4333] Call Trace:
[  283.853455][ T4333]  <TASK>
[  283.856535][ T4333]  dump_stack_lvl+0x188/0x250
[  283.861265][ T4333]  ? show_regs_print_info+0x20/0x20
[  283.866779][ T4333]  ? load_image+0x400/0x400
[  283.871446][ T4333]  ? do_raw_spin_unlock+0x11d/0x230
[  283.876679][ T4333]  gfs2_assert_warn_i+0x18f/0x2c0
[  283.881748][ T4333]  gfs2_quota_cleanup+0x4b4/0x6a0
[  283.886824][ T4333]  gfs2_make_fs_ro+0x523/0x620
[  283.891889][ T4333]  ? gfs2_dinode_out+0xb00/0xb00
[  283.896866][ T4333]  ? gfs2_put_super+0x189/0x7d0
[  283.902303][ T4333]  ? __lock_acquire+0x7d10/0x7d10
[  283.907459][ T4333]  ? __rwlock_init+0x140/0x140
[  283.912347][ T4333]  ? hook_inode_free_security+0xa0/0xa0
[  283.918193][ T4333]  ? do_raw_spin_unlock+0x11d/0x230
[  283.923655][ T4333]  gfs2_put_super+0x1d2/0x7d0
[  283.928394][ T4333]  ? gfs2_evict_inode+0x1240/0x1240
[  283.933940][ T4333]  generic_shutdown_super+0x130/0x300
[  283.939438][ T4333]  kill_block_super+0x7c/0xe0
[  283.944327][ T4333]  deactivate_locked_super+0x93/0xf0
[  283.949829][ T4333]  cleanup_mnt+0x42d/0x4e0
[  283.954372][ T4333]  ? lockdep_hardirqs_on+0x94/0x140
[  283.959784][ T4333]  task_work_run+0x125/0x1a0
[  283.964419][ T4333]  exit_to_user_mode_loop+0x10f/0x130
[  283.969913][ T4333]  exit_to_user_mode_prepare+0xee/0x180
[  283.975939][ T4333]  syscall_exit_to_user_mode+0x16/0x40
[  283.981703][ T4333]  do_syscall_64+0x58/0xa0
[  283.986294][ T4333]  ? clear_bhb_loop+0x30/0x80
[  283.991171][ T4333]  ? clear_bhb_loop+0x30/0x80
[  283.995886][ T4333]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  284.001810][ T4333] RIP: 0033:0x7fa918979a57
[  284.006257][ T4333] 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
[  284.026420][ T4333] RSP: 002b:00007fff4ffdb0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  284.035072][ T4333] RAX: 0000000000000000 RBX: 00007fa918a0e048 RCX: 00007fa918979a57
[  284.043702][ T4333] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff4ffdb180
[  284.052736][ T4333] RBP: 00007fff4ffdb180 R08: 00007fff4ffdc180 R09: 00000000ffffffff
[  284.061246][ T4333] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff4ffdc210
[  284.069909][ T4333] R13: 00007fa918a0e048 R14: 00000000000447f6 R15: 00007fff4ffdc250
[  284.078232][ T4333]  </TASK>
[  284.200009][ T4498] loop4: detected capacity change from 0 to 32768
[  284.302870][ T4498] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[  284.311169][ T4498] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[  284.329310][ T4498] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[  284.340584][ T1330] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[  284.417998][ T4500] loop2: detected capacity change from 0 to 32768
[  284.454707][ T1330] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[  284.772792][ T4503] loop3: detected capacity change from 0 to 32768
[  284.955791][ T1330] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 501ms
[  285.002997][ T1330] gfs2: fsid=syz:syz.0: jid=0: Done
[  285.098852][ T4506] loop0: detected capacity change from 0 to 32768
[  285.127419][ T4500] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  285.135281][ T4500] CPU: 1 PID: 4500 Comm: syz.2.53 Not tainted syzkaller #0
[  285.142519][ T4500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  285.152875][ T4500] Call Trace:
[  285.156352][ T4500]  <TASK>
[  285.159403][ T4500]  dump_stack_lvl+0x188/0x250
[  285.164291][ T4500]  ? show_regs_print_info+0x20/0x20
[  285.169789][ T4500]  ? load_image+0x400/0x400
[  285.174436][ T4500]  sysfs_create_dir_ns+0x26a/0x290
[  285.179585][ T4500]  ? sysfs_warn_dup+0xa0/0xa0
[  285.184560][ T4500]  ? do_raw_spin_unlock+0x11d/0x230
[  285.189798][ T4500]  kobject_add_internal+0x6e0/0xd90
[  285.195248][ T4500]  kobject_init_and_add+0x128/0x190
[  285.200576][ T4500]  ? lockdep_softirqs_off+0x430/0x430
[  285.206189][ T4500]  ? kobject_add+0x230/0x230
[  285.210940][ T4500]  ? __init_swait_queue_head+0xa5/0x150
[  285.216728][ T4500]  gfs2_sys_fs_add+0x24f/0x4b0
[  285.221624][ T4500]  ? gfs2_recover_set+0x240/0x240
[  285.226708][ T4500]  ? snprintf+0xe5/0x140
[  285.231190][ T4500]  ? __free_pages+0x95/0x1a0
[  285.235825][ T4500]  ? vscnprintf+0x80/0x80
[  285.240208][ T4500]  gfs2_fill_super+0x120f/0x1f00
[  285.245549][ T4500]  ? gfs2_reconfigure+0xd30/0xd30
[  285.250836][ T4500]  ? sb_set_blocksize+0xa5/0xe0
[  285.255727][ T4500]  get_tree_bdev+0x3f1/0x610
[  285.260355][ T4500]  ? gfs2_reconfigure+0xd30/0xd30
[  285.265420][ T4500]  gfs2_get_tree+0x4d/0x1e0
[  285.270074][ T4500]  vfs_get_tree+0x88/0x270
[  285.274704][ T4500]  do_new_mount+0x24a/0xa40
[  285.279440][ T4500]  __se_sys_mount+0x2e3/0x3d0
[  285.284158][ T4500]  ? __x64_sys_mount+0xc0/0xc0
[  285.288963][ T4500]  ? lockdep_hardirqs_on+0x94/0x140
[  285.294379][ T4500]  ? __x64_sys_mount+0x1c/0xc0
[  285.299273][ T4500]  do_syscall_64+0x4c/0xa0
[  285.303732][ T4500]  ? clear_bhb_loop+0x30/0x80
[  285.308436][ T4500]  ? clear_bhb_loop+0x30/0x80
[  285.313243][ T4500]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  285.319265][ T4500] RIP: 0033:0x7f6a552d6a8a
[  285.323803][ T4500] 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
[  285.327145][ T4498] gfs2: fsid=syz:syz.0: first mount done, others may mount
[  285.343889][ T4500] RSP: 002b:00007f6a54936e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  285.343920][ T4500] RAX: ffffffffffffffda RBX: 00007f6a54936ee0 RCX: 00007f6a552d6a8a
[  285.343935][ T4500] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f6a54936ea0
[  285.343949][ T4500] RBP: 00002000000124c0 R08: 00007f6a54936ee0 R09: 0000000000000000
[  285.343963][ T4500] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  285.343977][ T4500] R13: 00007f6a54936ea0 R14: 0000000000012616 R15: 0000200000000140
[  285.344007][ T4500]  </TASK>
[  285.405996][ T4500] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  285.419480][ T4500] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  285.475945][ T4503] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  285.484299][ T4503] CPU: 1 PID: 4503 Comm: syz.3.20 Not tainted syzkaller #0
[  285.484614][ T4506] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  285.491795][ T4503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  285.491809][ T4503] Call Trace:
[  285.491816][ T4503]  <TASK>
[  285.491825][ T4503]  dump_stack_lvl+0x188/0x250
[  285.491854][ T4503]  ? show_regs_print_info+0x20/0x20
[  285.525837][ T4503]  ? load_image+0x400/0x400
[  285.530395][ T4503]  sysfs_create_dir_ns+0x26a/0x290
[  285.535549][ T4503]  ? sysfs_warn_dup+0xa0/0xa0
[  285.540329][ T4503]  ? do_raw_spin_unlock+0x11d/0x230
[  285.545629][ T4503]  kobject_add_internal+0x6e0/0xd90
[  285.550844][ T4503]  kobject_init_and_add+0x128/0x190
[  285.556047][ T4503]  ? lockdep_softirqs_off+0x430/0x430
[  285.561553][ T4503]  ? kobject_add+0x230/0x230
[  285.566255][ T4503]  ? __init_swait_queue_head+0xa5/0x150
[  285.572127][ T4503]  gfs2_sys_fs_add+0x24f/0x4b0
[  285.577014][ T4503]  ? gfs2_recover_set+0x240/0x240
[  285.582153][ T4503]  ? snprintf+0xe5/0x140
[  285.586611][ T4503]  ? __free_pages+0x95/0x1a0
[  285.591388][ T4503]  ? vscnprintf+0x80/0x80
[  285.595908][ T4503]  gfs2_fill_super+0x120f/0x1f00
[  285.601049][ T4503]  ? gfs2_reconfigure+0xd30/0xd30
[  285.606097][ T4503]  ? sb_set_blocksize+0xa5/0xe0
[  285.611221][ T4503]  get_tree_bdev+0x3f1/0x610
[  285.615828][ T4503]  ? gfs2_reconfigure+0xd30/0xd30
[  285.621068][ T4503]  gfs2_get_tree+0x4d/0x1e0
[  285.625603][ T4503]  vfs_get_tree+0x88/0x270
[  285.630128][ T4503]  do_new_mount+0x24a/0xa40
[  285.634732][ T4503]  __se_sys_mount+0x2e3/0x3d0
[  285.639495][ T4503]  ? __x64_sys_mount+0xc0/0xc0
[  285.644511][ T4503]  ? lockdep_hardirqs_on+0x94/0x140
[  285.649828][ T4503]  ? __x64_sys_mount+0x1c/0xc0
[  285.654954][ T4503]  do_syscall_64+0x4c/0xa0
[  285.659456][ T4503]  ? clear_bhb_loop+0x30/0x80
[  285.664177][ T4503]  ? clear_bhb_loop+0x30/0x80
[  285.669184][ T4503]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  285.675115][ T4503] RIP: 0033:0x7f09ec5c9a8a
[  285.679554][ 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
[  285.699663][ T4503] RSP: 002b:00007f09ebc29e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  285.708098][ T4503] RAX: ffffffffffffffda RBX: 00007f09ebc29ee0 RCX: 00007f09ec5c9a8a
[  285.716090][ T4503] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f09ebc29ea0
[  285.724157][ T4503] RBP: 00002000000124c0 R08: 00007f09ebc29ee0 R09: 0000000000000000
[  285.732138][ T4503] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  285.740297][ T4503] R13: 00007f09ebc29ea0 R14: 0000000000012616 R15: 0000200000000140
[  285.748655][ T4503]  </TASK>
[  285.751700][ T4506] CPU: 0 PID: 4506 Comm: syz.0.54 Not tainted syzkaller #0
[  285.752893][ T4503] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  285.759193][ T4506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  285.759211][ T4506] Call Trace:
[  285.759219][ T4506]  <TASK>
[  285.759228][ T4506]  dump_stack_lvl+0x188/0x250
[  285.759259][ T4506]  ? show_regs_print_info+0x20/0x20
[  285.759285][ T4506]  ? load_image+0x400/0x400
[  285.759319][ T4506]  sysfs_create_dir_ns+0x26a/0x290
[  285.759344][ T4506]  ? sysfs_warn_dup+0xa0/0xa0
[  285.759366][ T4506]  ? do_raw_spin_unlock+0x11d/0x230
[  285.759393][ T4506]  kobject_add_internal+0x6e0/0xd90
[  285.759434][ T4506]  kobject_init_and_add+0x128/0x190
[  285.759456][ T4506]  ? lockdep_softirqs_off+0x430/0x430
[  285.759484][ T4506]  ? kobject_add+0x230/0x230
[  285.759511][ T4506]  ? __init_swait_queue_head+0xa5/0x150
[  285.759540][ T4506]  gfs2_sys_fs_add+0x24f/0x4b0
[  285.759565][ T4506]  ? gfs2_recover_set+0x240/0x240
[  285.759586][ T4506]  ? snprintf+0xe5/0x140
[  285.759606][ T4506]  ? __free_pages+0x95/0x1a0
[  285.759632][ T4506]  ? vscnprintf+0x80/0x80
[  285.759664][ T4506]  gfs2_fill_super+0x120f/0x1f00
[  285.759703][ T4506]  ? gfs2_reconfigure+0xd30/0xd30
[  285.759746][ T4506]  ? sb_set_blocksize+0xa5/0xe0
[  285.759770][ T4506]  get_tree_bdev+0x3f1/0x610
[  285.772911][ T4503] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  285.783141][ T4506]  ? gfs2_reconfigure+0xd30/0xd30
[  285.783179][ T4506]  gfs2_get_tree+0x4d/0x1e0
[  285.797543][ T4508] loop1: detected capacity change from 0 to 32768
[  285.800130][ T4506]  vfs_get_tree+0x88/0x270
[  285.800165][ T4506]  do_new_mount+0x24a/0xa40
[  285.923855][ T4506]  __se_sys_mount+0x2e3/0x3d0
[  285.928594][ T4506]  ? __x64_sys_mount+0xc0/0xc0
[  285.933399][ T4506]  ? lockdep_hardirqs_on+0x94/0x140
[  285.938721][ T4506]  ? __x64_sys_mount+0x1c/0xc0
[  285.943689][ T4506]  do_syscall_64+0x4c/0xa0
[  285.948487][ T4506]  ? clear_bhb_loop+0x30/0x80
[  285.953637][ T4506]  ? clear_bhb_loop+0x30/0x80
[  285.958447][ T4506]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  285.964480][ T4506] RIP: 0033:0x7ffba635ba8a
[  285.968934][ T4506] 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
[  285.989226][ T4506] RSP: 002b:00007ffba59bbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  285.997682][ T4506] RAX: ffffffffffffffda RBX: 00007ffba59bbee0 RCX: 00007ffba635ba8a
[  286.005705][ T4506] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba59bbea0
[  286.013717][ T4506] RBP: 00002000000124c0 R08: 00007ffba59bbee0 R09: 0000000000000000
[  286.021722][ T4506] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  286.029728][ T4506] R13: 00007ffba59bbea0 R14: 0000000000012616 R15: 0000200000000140
[  286.038044][ T4506]  </TASK>
[  286.041053][ T4498] gfs2: fsid=syz:syz.0: found 1 quota changes
[  286.042234][ T4506] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  286.061012][ T4506] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  286.158555][ T4508] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  286.166194][ T4508] CPU: 0 PID: 4508 Comm: syz.1.55 Not tainted syzkaller #0
[  286.173471][ T4508] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  286.183645][ T4508] Call Trace:
[  286.186960][ T4508]  <TASK>
[  286.189913][ T4508]  dump_stack_lvl+0x188/0x250
[  286.194804][ T4508]  ? show_regs_print_info+0x20/0x20
[  286.200038][ T4508]  ? load_image+0x400/0x400
[  286.204818][ T4508]  sysfs_create_dir_ns+0x26a/0x290
[  286.209955][ T4508]  ? sysfs_warn_dup+0xa0/0xa0
[  286.214658][ T4508]  ? do_raw_spin_unlock+0x11d/0x230
[  286.220057][ T4508]  kobject_add_internal+0x6e0/0xd90
[  286.225433][ T4508]  kobject_init_and_add+0x128/0x190
[  286.230722][ T4508]  ? lockdep_softirqs_off+0x430/0x430
[  286.236255][ T4508]  ? kobject_add+0x230/0x230
[  286.241025][ T4508]  ? __init_swait_queue_head+0xa5/0x150
[  286.246820][ T4508]  gfs2_sys_fs_add+0x24f/0x4b0
[  286.251631][ T4508]  ? gfs2_recover_set+0x240/0x240
[  286.256870][ T4508]  ? snprintf+0xe5/0x140
[  286.261234][ T4508]  ? __free_pages+0x95/0x1a0
[  286.266191][ T4508]  ? vscnprintf+0x80/0x80
[  286.270655][ T4508]  gfs2_fill_super+0x120f/0x1f00
[  286.276166][ T4508]  ? gfs2_reconfigure+0xd30/0xd30
[  286.281258][ T4508]  ? sb_set_blocksize+0xa5/0xe0
[  286.286360][ T4508]  get_tree_bdev+0x3f1/0x610
[  286.291280][ T4508]  ? gfs2_reconfigure+0xd30/0xd30
[  286.296464][ T4508]  gfs2_get_tree+0x4d/0x1e0
[  286.301292][ T4508]  vfs_get_tree+0x88/0x270
[  286.305772][ T4508]  do_new_mount+0x24a/0xa40
[  286.310554][ T4508]  __se_sys_mount+0x2e3/0x3d0
[  286.315439][ T4508]  ? __x64_sys_mount+0xc0/0xc0
[  286.320248][ T4508]  ? lockdep_hardirqs_on+0x94/0x140
[  286.325654][ T4508]  ? __x64_sys_mount+0x1c/0xc0
[  286.330473][ T4508]  do_syscall_64+0x4c/0xa0
[  286.335012][ T4508]  ? clear_bhb_loop+0x30/0x80
[  286.339718][ T4508]  ? clear_bhb_loop+0x30/0x80
[  286.344601][ T4508]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  286.351138][ T4508] RIP: 0033:0x7fa918979a8a
[  286.355738][ T4508] 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
[  286.375751][ T4508] RSP: 002b:00007fa917fd9e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  286.385006][ T4508] RAX: ffffffffffffffda RBX: 00007fa917fd9ee0 RCX: 00007fa918979a8a
[  286.393107][ T4508] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fa917fd9ea0
[  286.401651][ T4508] RBP: 00002000000124c0 R08: 00007fa917fd9ee0 R09: 0000000000000000
[  286.409946][ T4508] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  286.417954][ T4508] R13: 00007fa917fd9ea0 R14: 0000000000012616 R15: 0000200000000140
[  286.426245][ T4508]  </TASK>
[  286.430901][ T4508] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  286.444833][ T4508] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  286.512948][    T9] device hsr_slave_0 left promiscuous mode
[  286.526839][    T9] device hsr_slave_1 left promiscuous mode
[  286.556077][    T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  286.566026][ T4512] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  286.566105][ T4336] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[  286.573731][ T4512] CPU: 1 PID: 4512 Comm: syz.2.56 Not tainted syzkaller #0
[  286.573754][ T4512] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  286.573766][ T4512] Call Trace:
[  286.573773][ T4512]  <TASK>
[  286.573781][ T4512]  dump_stack_lvl+0x188/0x250
[  286.573811][ T4512]  ? show_regs_print_info+0x20/0x20
[  286.573838][ T4512]  ? load_image+0x400/0x400
[  286.573868][ T4512]  sysfs_create_dir_ns+0x26a/0x290
[  286.573893][ T4512]  ? sysfs_warn_dup+0xa0/0xa0
[  286.573915][ T4512]  ? do_raw_spin_unlock+0x11d/0x230
[  286.643709][ T4512]  kobject_add_internal+0x6e0/0xd90
[  286.649137][ T4512]  kobject_init_and_add+0x128/0x190
[  286.654387][ T4512]  ? lockdep_softirqs_off+0x430/0x430
[  286.659820][ T4512]  ? kobject_add+0x230/0x230
[  286.664489][ T4512]  ? __init_swait_queue_head+0xa5/0x150
[  286.670341][ T4512]  gfs2_sys_fs_add+0x24f/0x4b0
[  286.675146][ T4512]  ? gfs2_recover_set+0x240/0x240
[  286.680316][ T4512]  ? snprintf+0xe5/0x140
[  286.684594][ T4512]  ? __free_pages+0x95/0x1a0
[  286.689395][ T4512]  ? vscnprintf+0x80/0x80
[  286.693781][ T4512]  gfs2_fill_super+0x120f/0x1f00
[  286.699118][ T4512]  ? gfs2_reconfigure+0xd30/0xd30
[  286.704324][ T4512]  ? sb_set_blocksize+0xa5/0xe0
[  286.709435][ T4512]  get_tree_bdev+0x3f1/0x610
[  286.714281][ T4512]  ? gfs2_reconfigure+0xd30/0xd30
[  286.719702][ T4512]  gfs2_get_tree+0x4d/0x1e0
[  286.724385][ T4512]  vfs_get_tree+0x88/0x270
[  286.729019][ T4512]  do_new_mount+0x24a/0xa40
[  286.733751][ T4512]  __se_sys_mount+0x2e3/0x3d0
[  286.738676][ T4512]  ? __x64_sys_mount+0xc0/0xc0
[  286.743784][ T4512]  ? lockdep_hardirqs_on+0x94/0x140
[  286.749129][ T4512]  ? __x64_sys_mount+0x1c/0xc0
[  286.754103][ T4512]  do_syscall_64+0x4c/0xa0
[  286.758563][ T4512]  ? clear_bhb_loop+0x30/0x80
[  286.763413][ T4512]  ? clear_bhb_loop+0x30/0x80
[  286.768125][ T4512]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  286.774061][ T4512] RIP: 0033:0x7f6a552d6a8a
[  286.778618][ T4512] 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
[  286.799105][ T4512] RSP: 002b:00007f6a54936e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  286.808226][ T4512] RAX: ffffffffffffffda RBX: 00007f6a54936ee0 RCX: 00007f6a552d6a8a
[  286.816450][ T4512] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f6a54936ea0
[  286.824740][ T4512] RBP: 00002000000124c0 R08: 00007f6a54936ee0 R09: 0000000000000000
[  286.833011][ T4512] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  286.841096][ T4512] R13: 00007f6a54936ea0 R14: 0000000000012616 R15: 0000200000000140
[  286.849300][ T4512]  </TASK>
[  286.852562][ T4512] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  286.866191][ T4512] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  286.882884][ T4336] CPU: 1 PID: 4336 Comm: syz-executor Not tainted syzkaller #0
[  286.891318][ T4336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  286.901529][ T4336] Call Trace:
[  286.904847][ T4336]  <TASK>
[  286.907811][ T4336]  dump_stack_lvl+0x188/0x250
[  286.912760][ T4336]  ? show_regs_print_info+0x20/0x20
[  286.918393][ T4336]  ? load_image+0x400/0x400
[  286.923164][ T4336]  ? do_raw_spin_unlock+0x11d/0x230
[  286.928423][ T4336]  gfs2_assert_warn_i+0x18f/0x2c0
[  286.933533][ T4336]  gfs2_quota_cleanup+0x4b4/0x6a0
[  286.938608][ T4336]  gfs2_make_fs_ro+0x523/0x620
[  286.943492][ T4336]  ? gfs2_dinode_out+0xb00/0xb00
[  286.948458][ T4336]  ? gfs2_put_super+0x189/0x7d0
[  286.953610][ T4336]  ? __lock_acquire+0x7d10/0x7d10
[  286.958805][ T4336]  ? __rwlock_init+0x140/0x140
[  286.963863][ T4336]  ? hook_inode_free_security+0xa0/0xa0
[  286.969630][ T4336]  ? do_raw_spin_unlock+0x11d/0x230
[  286.974861][ T4336]  gfs2_put_super+0x1d2/0x7d0
[  286.979663][ T4336]  ? gfs2_evict_inode+0x1240/0x1240
[  286.985023][ T4336]  generic_shutdown_super+0x130/0x300
[  286.989644][ T4514] set_capacity_and_notify: 1 callbacks suppressed
[  286.989658][ T4514] loop0: detected capacity change from 0 to 32768
[  286.991033][ T4336]  kill_block_super+0x7c/0xe0
[  287.008728][ T4336]  deactivate_locked_super+0x93/0xf0
[  287.014235][ T4336]  cleanup_mnt+0x42d/0x4e0
[  287.018871][ T4336]  ? lockdep_hardirqs_on+0x94/0x140
[  287.024285][ T4336]  task_work_run+0x125/0x1a0
[  287.029101][ T4336]  exit_to_user_mode_loop+0x10f/0x130
[  287.034691][ T4336]  exit_to_user_mode_prepare+0xee/0x180
[  287.040462][ T4336]  syscall_exit_to_user_mode+0x16/0x40
[  287.046364][ T4336]  do_syscall_64+0x58/0xa0
[  287.051020][ T4336]  ? clear_bhb_loop+0x30/0x80
[  287.055816][ T4336]  ? clear_bhb_loop+0x30/0x80
[  287.060614][ T4336]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  287.066727][ T4336] RIP: 0033:0x7f7aecfc7a57
[  287.071223][ T4336] 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
[  287.091144][ T4336] RSP: 002b:00007ffec213bc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  287.099962][ T4336] RAX: 0000000000000000 RBX: 00007f7aed05c048 RCX: 00007f7aecfc7a57
[  287.108052][ T4336] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffec213bce0
[  287.116327][ T4336] RBP: 00007ffec213bce0 R08: 00007ffec213cce0 R09: 00000000ffffffff
[  287.124572][ T4336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec213cd70
[  287.132584][ T4336] R13: 00007f7aed05c048 R14: 0000000000045554 R15: 00007ffec213cdb0
[  287.141278][ T4336]  </TASK>
[  287.186474][    T9] batman_adv: batadv0: Removing interface: batadv_slave_0
[  287.325910][ T4518] loop3: detected capacity change from 0 to 32768
[  287.413273][    T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  287.521737][ T4517] loop1: detected capacity change from 0 to 32768
[  287.532110][    T9] batman_adv: batadv0: Removing interface: batadv_slave_1
[  287.550864][    T9] device bridge_slave_1 left promiscuous mode
[  287.564109][    T9] bridge0: port 2(bridge_slave_1) entered disabled state
[  287.614585][    T9] device bridge_slave_0 left promiscuous mode
[  287.628895][    T9] bridge0: port 1(bridge_slave_0) entered disabled state
[  287.671416][    T9] device veth1_macvtap left promiscuous mode
[  287.682255][    T9] device veth0_macvtap left promiscuous mode
[  287.692924][    T9] device veth1_vlan left promiscuous mode
[  287.704157][    T9] device veth0_vlan left promiscuous mode
[  287.750965][ T4514] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[  287.759396][ T4514] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[  287.837137][ T4517] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  287.837308][ T4518] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  287.846181][ T4517] CPU: 1 PID: 4517 Comm: syz.1.60 Not tainted syzkaller #0
[  287.859801][ T4517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  287.870242][ T4517] Call Trace:
[  287.873806][ T4517]  <TASK>
[  287.876748][ T4517]  dump_stack_lvl+0x188/0x250
[  287.881527][ T4517]  ? show_regs_print_info+0x20/0x20
[  287.886912][ T4517]  ? load_image+0x400/0x400
[  287.891436][ T4517]  sysfs_create_dir_ns+0x26a/0x290
[  287.896865][ T4517]  ? sysfs_warn_dup+0xa0/0xa0
[  287.901556][ T4517]  ? do_raw_spin_unlock+0x11d/0x230
[  287.906988][ T4517]  kobject_add_internal+0x6e0/0xd90
[  287.912395][ T4517]  kobject_init_and_add+0x128/0x190
[  287.917885][ T4517]  ? lockdep_softirqs_off+0x430/0x430
[  287.923367][ T4517]  ? kobject_add+0x230/0x230
[  287.928157][ T4517]  ? __init_swait_queue_head+0xa5/0x150
[  287.933813][ T4517]  gfs2_sys_fs_add+0x24f/0x4b0
[  287.938592][ T4517]  ? gfs2_recover_set+0x240/0x240
[  287.943712][ T4517]  ? snprintf+0xe5/0x140
[  287.948228][ T4517]  ? __free_pages+0x95/0x1a0
[  287.952838][ T4517]  ? vscnprintf+0x80/0x80
[  287.957186][ T4517]  gfs2_fill_super+0x120f/0x1f00
[  287.962151][ T4517]  ? gfs2_reconfigure+0xd30/0xd30
[  287.967228][ T4517]  ? sb_set_blocksize+0xa5/0xe0
[  287.972175][ T4517]  get_tree_bdev+0x3f1/0x610
[  287.976780][ T4517]  ? gfs2_reconfigure+0xd30/0xd30
[  287.981957][ T4517]  gfs2_get_tree+0x4d/0x1e0
[  287.986481][ T4517]  vfs_get_tree+0x88/0x270
[  287.991166][ T4517]  do_new_mount+0x24a/0xa40
[  287.995921][ T4517]  __se_sys_mount+0x2e3/0x3d0
[  288.000621][ T4517]  ? __x64_sys_mount+0xc0/0xc0
[  288.005574][ T4517]  ? lockdep_hardirqs_on+0x94/0x140
[  288.010787][ T4517]  ? __x64_sys_mount+0x1c/0xc0
[  288.015849][ T4517]  do_syscall_64+0x4c/0xa0
[  288.020499][ T4517]  ? clear_bhb_loop+0x30/0x80
[  288.025206][ T4517]  ? clear_bhb_loop+0x30/0x80
[  288.030029][ T4517]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  288.036052][ T4517] RIP: 0033:0x7fa918979a8a
[  288.040599][ T4517] 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
[  288.060413][ T4517] RSP: 002b:00007fa917fd9e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  288.069053][ T4517] RAX: ffffffffffffffda RBX: 00007fa917fd9ee0 RCX: 00007fa918979a8a
[  288.077240][ T4517] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fa917fd9ea0
[  288.085502][ T4517] RBP: 00002000000124c0 R08: 00007fa917fd9ee0 R09: 0000000000000000
[  288.093762][ T4517] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  288.101906][ T4517] R13: 00007fa917fd9ea0 R14: 0000000000012616 R15: 0000200000000140
[  288.109933][ T4517]  </TASK>
[  288.112979][ T4518] CPU: 0 PID: 4518 Comm: syz.3.59 Not tainted syzkaller #0
[  288.113050][ T4517] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
2026/04/05 10:10:09 executed programs: 54
[  288.120310][ T4518] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  288.120324][ T4518] Call Trace:
[  288.120332][ T4518]  <TASK>
[  288.120340][ T4518]  dump_stack_lvl+0x188/0x250
[  288.134374][ T4517] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  288.144920][ T4518]  ? show_regs_print_info+0x20/0x20
[  288.144959][ T4518]  ? load_image+0x400/0x400
[  288.150861][ T4520] loop4: detected capacity change from 0 to 32768
[  288.151302][ T4518]  sysfs_create_dir_ns+0x26a/0x290
[  288.184473][ T4518]  ? sysfs_warn_dup+0xa0/0xa0
[  288.189288][ T4518]  ? do_raw_spin_unlock+0x11d/0x230
[  288.194807][ T4518]  kobject_add_internal+0x6e0/0xd90
[  288.197932][ T4514] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[  288.200215][ T4518]  kobject_init_and_add+0x128/0x190
[  288.213678][ T4518]  ? lockdep_softirqs_off+0x430/0x430
[  288.219191][ T4518]  ? kobject_add+0x230/0x230
[  288.223924][ T4518]  ? __init_swait_queue_head+0xa5/0x150
[  288.229665][ T4518]  gfs2_sys_fs_add+0x24f/0x4b0
[  288.234583][ T4518]  ? gfs2_recover_set+0x240/0x240
[  288.239913][ T4518]  ? snprintf+0xe5/0x140
[  288.244445][ T4518]  ? __free_pages+0x95/0x1a0
[  288.249344][ T4518]  ? vscnprintf+0x80/0x80
[  288.253727][ T4518]  gfs2_fill_super+0x120f/0x1f00
[  288.259122][ T4518]  ? gfs2_reconfigure+0xd30/0xd30
[  288.264211][ T4518]  ? sb_set_blocksize+0xa5/0xe0
[  288.269260][ T4518]  get_tree_bdev+0x3f1/0x610
[  288.274061][ T4518]  ? gfs2_reconfigure+0xd30/0xd30
[  288.279151][ T4518]  gfs2_get_tree+0x4d/0x1e0
[  288.279624][ T4396] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[  288.283691][ T4518]  vfs_get_tree+0x88/0x270
[  288.295088][ T4518]  do_new_mount+0x24a/0xa40
[  288.300092][ T4518]  __se_sys_mount+0x2e3/0x3d0
[  288.304848][ T4518]  ? __x64_sys_mount+0xc0/0xc0
[  288.309924][ T4518]  ? lockdep_hardirqs_on+0x94/0x140
[  288.315419][ T4518]  ? __x64_sys_mount+0x1c/0xc0
[  288.320376][ T4518]  do_syscall_64+0x4c/0xa0
[  288.324914][ T4518]  ? clear_bhb_loop+0x30/0x80
[  288.329658][ T4518]  ? clear_bhb_loop+0x30/0x80
[  288.334508][ T4518]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  288.340530][ T4518] RIP: 0033:0x7f09ec5c9a8a
[  288.345053][ T4518] 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
[  288.364968][ T4518] RSP: 002b:00007f09ebc29e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  288.365453][ T4396] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[  288.373588][ T4518] RAX: ffffffffffffffda RBX: 00007f09ebc29ee0 RCX: 00007f09ec5c9a8a
[  288.373607][ T4518] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f09ebc29ea0
[  288.373621][ T4518] RBP: 00002000000124c0 R08: 00007f09ebc29ee0 R09: 0000000000000000
[  288.373634][ T4518] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  288.373648][ T4518] R13: 00007f09ebc29ea0 R14: 0000000000012616 R15: 0000200000000140
[  288.421957][ T4518]  </TASK>
[  288.426790][ T4518] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  288.440896][ T4518] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  288.820634][ T4520] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  288.828356][ T4520] CPU: 1 PID: 4520 Comm: syz.4.57 Not tainted syzkaller #0
[  288.836167][ T4520] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  288.846345][ T4520] Call Trace:
[  288.849746][ T4520]  <TASK>
[  288.852889][ T4520]  dump_stack_lvl+0x188/0x250
[  288.857700][ T4520]  ? show_regs_print_info+0x20/0x20
[  288.862941][ T4520]  ? load_image+0x400/0x400
[  288.867495][ T4520]  sysfs_create_dir_ns+0x26a/0x290
[  288.872683][ T4520]  ? sysfs_warn_dup+0xa0/0xa0
[  288.877400][ T4520]  ? do_raw_spin_unlock+0x11d/0x230
[  288.883437][ T4520]  kobject_add_internal+0x6e0/0xd90
[  288.888782][ T4520]  kobject_init_and_add+0x128/0x190
[  288.894213][ T4520]  ? lockdep_softirqs_off+0x430/0x430
[  288.899819][ T4520]  ? kobject_add+0x230/0x230
[  288.904535][ T4520]  ? __init_swait_queue_head+0xa5/0x150
[  288.910312][ T4520]  gfs2_sys_fs_add+0x24f/0x4b0
[  288.915366][ T4520]  ? gfs2_recover_set+0x240/0x240
[  288.920610][ T4520]  ? snprintf+0xe5/0x140
[  288.925154][ T4520]  ? __free_pages+0x95/0x1a0
[  288.929977][ T4520]  ? vscnprintf+0x80/0x80
[  288.934442][ T4520]  gfs2_fill_super+0x120f/0x1f00
[  288.939614][ T4520]  ? gfs2_reconfigure+0xd30/0xd30
[  288.944976][ T4520]  ? sb_set_blocksize+0xa5/0xe0
[  288.949956][ T4520]  get_tree_bdev+0x3f1/0x610
[  288.954844][ T4520]  ? gfs2_reconfigure+0xd30/0xd30
[  288.959999][ T4520]  gfs2_get_tree+0x4d/0x1e0
[  288.964636][ T4520]  vfs_get_tree+0x88/0x270
[  288.969084][ T4520]  do_new_mount+0x24a/0xa40
[  288.973717][ T4520]  __se_sys_mount+0x2e3/0x3d0
[  288.978656][ T4520]  ? __x64_sys_mount+0xc0/0xc0
[  288.983720][ T4520]  ? lockdep_hardirqs_on+0x94/0x140
[  288.989026][ T4520]  ? __x64_sys_mount+0x1c/0xc0
[  288.993830][ T4520]  do_syscall_64+0x4c/0xa0
[  288.998400][ T4520]  ? clear_bhb_loop+0x30/0x80
[  289.003114][ T4520]  ? clear_bhb_loop+0x30/0x80
[  289.007933][ T4520]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  289.014035][ T4520] RIP: 0033:0x7f7aecfc7a8a
[  289.018695][ T4520] 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
[  289.038417][ T4520] RSP: 002b:00007f7aec627e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  289.047213][ T4520] RAX: ffffffffffffffda RBX: 00007f7aec627ee0 RCX: 00007f7aecfc7a8a
[  289.055409][ T4520] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f7aec627ea0
[  289.063696][ T4520] RBP: 00002000000124c0 R08: 00007f7aec627ee0 R09: 0000000000000000
[  289.072014][ T4520] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  289.080555][ T4520] R13: 00007f7aec627ea0 R14: 0000000000012616 R15: 0000200000000140
[  289.088680][ T4520]  </TASK>
[  289.093198][ T4520] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  289.107138][ T4520] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  290.146691][ T4538] loop1: detected capacity change from 0 to 32768
[  290.372690][ T4540] loop3: detected capacity change from 0 to 32768
[  290.401508][ T4396] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 2036ms
[  290.439354][ T4396] gfs2: fsid=syz:syz.0: jid=0: Done
[  290.471629][ T4540] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  290.479328][ T4540] CPU: 1 PID: 4540 Comm: syz.3.68 Not tainted syzkaller #0
[  290.486564][ T4540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  290.496843][ T4540] Call Trace:
[  290.500249][ T4540]  <TASK>
[  290.503298][ T4540]  dump_stack_lvl+0x188/0x250
[  290.508395][ T4540]  ? show_regs_print_info+0x20/0x20
[  290.513720][ T4540]  ? load_image+0x400/0x400
[  290.518352][ T4540]  sysfs_create_dir_ns+0x26a/0x290
[  290.523760][ T4540]  ? sysfs_warn_dup+0xa0/0xa0
[  290.528723][ T4540]  ? do_raw_spin_unlock+0x11d/0x230
[  290.533954][ T4540]  kobject_add_internal+0x6e0/0xd90
[  290.539386][ T4540]  kobject_init_and_add+0x128/0x190
[  290.544608][ T4540]  ? lockdep_softirqs_off+0x430/0x430
[  290.550562][ T4540]  ? kobject_add+0x230/0x230
[  290.555270][ T4540]  ? __init_swait_queue_head+0xa5/0x150
[  290.561176][ T4540]  gfs2_sys_fs_add+0x24f/0x4b0
[  290.566146][ T4540]  ? gfs2_recover_set+0x240/0x240
[  290.571203][ T4540]  ? snprintf+0xe5/0x140
[  290.575472][ T4540]  ? __free_pages+0x95/0x1a0
[  290.580101][ T4540]  ? vscnprintf+0x80/0x80
[  290.584555][ T4540]  gfs2_fill_super+0x120f/0x1f00
[  290.589834][ T4540]  ? gfs2_reconfigure+0xd30/0xd30
[  290.594992][ T4540]  ? sb_set_blocksize+0xa5/0xe0
[  290.599968][ T4540]  get_tree_bdev+0x3f1/0x610
[  290.604775][ T4540]  ? gfs2_reconfigure+0xd30/0xd30
[  290.609828][ T4540]  gfs2_get_tree+0x4d/0x1e0
[  290.614637][ T4540]  vfs_get_tree+0x88/0x270
[  290.619344][ T4540]  do_new_mount+0x24a/0xa40
[  290.623888][ T4540]  __se_sys_mount+0x2e3/0x3d0
[  290.628956][ T4540]  ? __x64_sys_mount+0xc0/0xc0
[  290.633778][ T4540]  ? lockdep_hardirqs_on+0x94/0x140
[  290.639354][ T4540]  ? __x64_sys_mount+0x1c/0xc0
[  290.644429][ T4540]  do_syscall_64+0x4c/0xa0
[  290.648869][ T4540]  ? clear_bhb_loop+0x30/0x80
[  290.653566][ T4540]  ? clear_bhb_loop+0x30/0x80
[  290.658354][ T4540]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  290.664288][ T4540] RIP: 0033:0x7f09ec5c9a8a
[  290.668731][ T4540] 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
[  290.688745][ T4540] RSP: 002b:00007f09ebc29e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  290.697384][ T4540] RAX: ffffffffffffffda RBX: 00007f09ebc29ee0 RCX: 00007f09ec5c9a8a
[  290.705817][ T4540] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f09ebc29ea0
[  290.714120][ T4540] RBP: 00002000000124c0 R08: 00007f09ebc29ee0 R09: 0000000000000000
[  290.722418][ T4540] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  290.731062][ T4540] R13: 00007f09ebc29ea0 R14: 0000000000012616 R15: 0000200000000140
[  290.739186][ T4540]  </TASK>
[  290.742508][ T4540] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  290.756160][ T4540] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  290.762950][ T4538] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  290.769516][ T4514] gfs2: fsid=syz:syz.0: first mount done, others may mount
[  290.770471][ T4538] CPU: 0 PID: 4538 Comm: syz.1.67 Not tainted syzkaller #0
[  290.785054][ T4538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  290.795421][ T4538] Call Trace:
[  290.798733][ T4538]  <TASK>
[  290.801876][ T4538]  dump_stack_lvl+0x188/0x250
[  290.806681][ T4538]  ? show_regs_print_info+0x20/0x20
[  290.812016][ T4538]  ? load_image+0x400/0x400
[  290.816852][ T4538]  sysfs_create_dir_ns+0x26a/0x290
[  290.822057][ T4538]  ? sysfs_warn_dup+0xa0/0xa0
[  290.827140][ T4538]  ? do_raw_spin_unlock+0x11d/0x230
[  290.832489][ T4538]  kobject_add_internal+0x6e0/0xd90
[  290.837424][ T4514] gfs2: fsid=syz:syz.0: can't start logd thread: -4
[  290.837908][ T4538]  kobject_init_and_add+0x128/0x190
[  290.849887][ T4538]  ? lockdep_softirqs_off+0x430/0x430
[  290.855764][ T4538]  ? kobject_add+0x230/0x230
[  290.860591][ T4538]  ? __init_swait_queue_head+0xa5/0x150
[  290.866263][ T4538]  gfs2_sys_fs_add+0x24f/0x4b0
[  290.871247][ T4538]  ? gfs2_recover_set+0x240/0x240
[  290.876397][ T4538]  ? snprintf+0xe5/0x140
[  290.880742][ T4538]  ? __free_pages+0x95/0x1a0
[  290.885452][ T4538]  ? vscnprintf+0x80/0x80
[  290.889888][ T4538]  gfs2_fill_super+0x120f/0x1f00
[  290.894846][ T4538]  ? gfs2_reconfigure+0xd30/0xd30
[  290.900066][ T4538]  ? sb_set_blocksize+0xa5/0xe0
[  290.904947][ T4538]  get_tree_bdev+0x3f1/0x610
[  290.909730][ T4538]  ? gfs2_reconfigure+0xd30/0xd30
[  290.914851][ T4538]  gfs2_get_tree+0x4d/0x1e0
[  290.919383][ T4538]  vfs_get_tree+0x88/0x270
[  290.923826][ T4538]  do_new_mount+0x24a/0xa40
[  290.928429][ T4538]  __se_sys_mount+0x2e3/0x3d0
[  290.933209][ T4538]  ? __x64_sys_mount+0xc0/0xc0
[  290.938183][ T4538]  ? lockdep_hardirqs_on+0x94/0x140
[  290.943393][ T4538]  ? __x64_sys_mount+0x1c/0xc0
[  290.948164][ T4538]  do_syscall_64+0x4c/0xa0
[  290.952615][ T4538]  ? clear_bhb_loop+0x30/0x80
[  290.957654][ T4538]  ? clear_bhb_loop+0x30/0x80
[  290.962368][ T4538]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  290.968286][ T4538] RIP: 0033:0x7fa918979a8a
[  290.972722][ T4538] 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
[  290.992685][ T4538] RSP: 002b:00007fa917fd9e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  291.001304][ T4538] RAX: ffffffffffffffda RBX: 00007fa917fd9ee0 RCX: 00007fa918979a8a
[  291.009382][ T4538] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fa917fd9ea0
[  291.017557][ T4538] RBP: 00002000000124c0 R08: 00007fa917fd9ee0 R09: 0000000000000000
[  291.025901][ T4538] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  291.034153][ T4538] R13: 00007fa917fd9ea0 R14: 0000000000012616 R15: 0000200000000140
[  291.042435][ T4538]  </TASK>
[  291.046600][ T4538] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  291.060696][ T4538] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  291.681583][ T4550] loop3: detected capacity change from 0 to 32768
[  291.681673][ T4551] loop1: detected capacity change from 0 to 32768
[  291.702244][ T4550] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[  291.711070][ T4550] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[  291.721628][ T4550] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[  291.731400][ T4321] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[  291.748763][ T4321] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[  291.808676][ T4551] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  291.816937][ T4551] CPU: 1 PID: 4551 Comm: syz.1.72 Not tainted syzkaller #0
[  291.824260][ T4551] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  291.836658][ T4551] Call Trace:
[  291.840154][ T4551]  <TASK>
[  291.843107][ T4551]  dump_stack_lvl+0x188/0x250
[  291.848049][ T4551]  ? show_regs_print_info+0x20/0x20
[  291.853580][ T4551]  ? load_image+0x400/0x400
[  291.858495][ T4551]  sysfs_create_dir_ns+0x26a/0x290
[  291.864278][ T4551]  ? sysfs_warn_dup+0xa0/0xa0
[  291.869418][ T4551]  ? do_raw_spin_unlock+0x11d/0x230
[  291.875017][ T4551]  kobject_add_internal+0x6e0/0xd90
[  291.880460][ T4551]  kobject_init_and_add+0x128/0x190
[  291.886067][ T4551]  ? lockdep_softirqs_off+0x430/0x430
[  291.891850][ T4551]  ? kobject_add+0x230/0x230
[  291.896766][ T4551]  ? __init_swait_queue_head+0xa5/0x150
[  291.902664][ T4551]  gfs2_sys_fs_add+0x24f/0x4b0
[  291.907854][ T4551]  ? gfs2_recover_set+0x240/0x240
[  291.913143][ T4551]  ? snprintf+0xe5/0x140
[  291.917991][ T4551]  ? __free_pages+0x95/0x1a0
[  291.923143][ T4551]  ? vscnprintf+0x80/0x80
[  291.927711][ T4551]  gfs2_fill_super+0x120f/0x1f00
[  291.933185][ T4551]  ? gfs2_reconfigure+0xd30/0xd30
[  291.939074][ T4551]  ? sb_set_blocksize+0xa5/0xe0
[  291.944342][ T4551]  get_tree_bdev+0x3f1/0x610
[  291.949156][ T4551]  ? gfs2_reconfigure+0xd30/0xd30
[  291.954398][ T4551]  gfs2_get_tree+0x4d/0x1e0
[  291.959120][ T4551]  vfs_get_tree+0x88/0x270
[  291.963886][ T4551]  do_new_mount+0x24a/0xa40
[  291.968612][ T4551]  __se_sys_mount+0x2e3/0x3d0
[  291.973436][ T4551]  ? __x64_sys_mount+0xc0/0xc0
[  291.978632][ T4551]  ? lockdep_hardirqs_on+0x94/0x140
[  291.984450][ T4551]  ? __x64_sys_mount+0x1c/0xc0
[  291.989356][ T4551]  do_syscall_64+0x4c/0xa0
[  291.994101][ T4551]  ? clear_bhb_loop+0x30/0x80
[  291.999071][ T4551]  ? clear_bhb_loop+0x30/0x80
[  292.004496][ T4551]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  292.011036][ T4551] RIP: 0033:0x7fa918979a8a
[  292.017674][ T4551] 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
[  292.039283][ T4551] RSP: 002b:00007fa917fd9e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  292.049577][ T4551] RAX: ffffffffffffffda RBX: 00007fa917fd9ee0 RCX: 00007fa918979a8a
[  292.058755][ T4551] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fa917fd9ea0
[  292.068030][ T4551] RBP: 00002000000124c0 R08: 00007fa917fd9ee0 R09: 0000000000000000
[  292.076152][ T4551] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  292.084907][ T4551] R13: 00007fa917fd9ea0 R14: 0000000000012616 R15: 0000200000000140
[  292.093544][ T4551]  </TASK>
[  292.097040][ T4551] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  292.111474][ T4551] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  292.480588][ T4321] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 731ms
[  292.490423][ T4553] loop2: detected capacity change from 0 to 32768
[  292.506479][ T4321] gfs2: fsid=syz:syz.0: jid=0: Done
[  292.512245][ T4550] gfs2: fsid=syz:syz.0: first mount done, others may mount
[  292.526785][ T4553] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  292.534338][ T4553] CPU: 1 PID: 4553 Comm: syz.2.74 Not tainted syzkaller #0
[  292.541583][ T4553] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  292.552122][ T4553] Call Trace:
[  292.555692][ T4553]  <TASK>
[  292.558742][ T4553]  dump_stack_lvl+0x188/0x250
[  292.563545][ T4553]  ? show_regs_print_info+0x20/0x20
[  292.568876][ T4553]  ? load_image+0x400/0x400
[  292.573426][ T4553]  sysfs_create_dir_ns+0x26a/0x290
[  292.578751][ T4553]  ? sysfs_warn_dup+0xa0/0xa0
[  292.583669][ T4553]  ? do_raw_spin_unlock+0x11d/0x230
[  292.588951][ T4553]  kobject_add_internal+0x6e0/0xd90
[  292.594345][ T4553]  kobject_init_and_add+0x128/0x190
[  292.599666][ T4553]  ? lockdep_softirqs_off+0x430/0x430
[  292.605090][ T4553]  ? kobject_add+0x230/0x230
[  292.609990][ T4553]  ? __init_swait_queue_head+0xa5/0x150
[  292.615764][ T4553]  gfs2_sys_fs_add+0x24f/0x4b0
[  292.620781][ T4553]  ? gfs2_recover_set+0x240/0x240
[  292.625931][ T4553]  ? snprintf+0xe5/0x140
[  292.630391][ T4553]  ? __free_pages+0x95/0x1a0
[  292.635387][ T4553]  ? vscnprintf+0x80/0x80
[  292.639764][ T4553]  gfs2_fill_super+0x120f/0x1f00
[  292.644769][ T4553]  ? gfs2_reconfigure+0xd30/0xd30
[  292.650229][ T4553]  ? sb_set_blocksize+0xa5/0xe0
[  292.655475][ T4553]  get_tree_bdev+0x3f1/0x610
[  292.660399][ T4553]  ? gfs2_reconfigure+0xd30/0xd30
[  292.665561][ T4553]  gfs2_get_tree+0x4d/0x1e0
[  292.670207][ T4553]  vfs_get_tree+0x88/0x270
[  292.674678][ T4553]  do_new_mount+0x24a/0xa40
[  292.679402][ T4553]  __se_sys_mount+0x2e3/0x3d0
[  292.684121][ T4553]  ? __x64_sys_mount+0xc0/0xc0
[  292.689107][ T4553]  ? lockdep_hardirqs_on+0x94/0x140
[  292.694449][ T4553]  ? __x64_sys_mount+0x1c/0xc0
[  292.699737][ T4553]  do_syscall_64+0x4c/0xa0
[  292.704284][ T4553]  ? clear_bhb_loop+0x30/0x80
[  292.709177][ T4553]  ? clear_bhb_loop+0x30/0x80
[  292.713888][ T4553]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  292.719897][ T4553] RIP: 0033:0x7f6a552d6a8a
[  292.724437][ T4553] 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
[  292.744358][ T4553] RSP: 002b:00007f6a54936e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  292.752816][ T4553] RAX: ffffffffffffffda RBX: 00007f6a54936ee0 RCX: 00007f6a552d6a8a
[  292.760837][ T4553] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f6a54936ea0
[  292.769250][ T4553] RBP: 00002000000124c0 R08: 00007f6a54936ee0 R09: 0000000000000000
[  292.777461][ T4553] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  292.785726][ T4553] R13: 00007f6a54936ea0 R14: 0000000000012616 R15: 0000200000000140
[  292.794365][ T4553]  </TASK>
[  292.801146][ T4553] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  292.814975][ T4553] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  292.901426][ T4546] loop4: detected capacity change from 0 to 32768
[  293.079145][ T4546] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  293.178442][ T4546] CPU: 0 PID: 4546 Comm: syz.4.70 Not tainted syzkaller #0
[  293.185893][ T4546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  293.196945][ T4546] Call Trace:
[  293.200435][ T4546]  <TASK>
[  293.203404][ T4546]  dump_stack_lvl+0x188/0x250
[  293.208128][ T4546]  ? show_regs_print_info+0x20/0x20
[  293.213848][ T4546]  ? load_image+0x400/0x400
[  293.218656][ T4546]  sysfs_create_dir_ns+0x26a/0x290
[  293.223805][ T4546]  ? sysfs_warn_dup+0xa0/0xa0
[  293.228728][ T4546]  ? do_raw_spin_unlock+0x11d/0x230
[  293.233404][ T4562] loop0: detected capacity change from 0 to 32768
[  293.233988][ T4546]  kobject_add_internal+0x6e0/0xd90
[  293.246335][ T4546]  kobject_init_and_add+0x128/0x190
[  293.251586][ T4546]  ? lockdep_softirqs_off+0x430/0x430
[  293.257265][ T4546]  ? kobject_add+0x230/0x230
[  293.262068][ T4546]  ? __init_swait_queue_head+0xa5/0x150
[  293.268134][ T4546]  gfs2_sys_fs_add+0x24f/0x4b0
[  293.274855][ T4546]  ? gfs2_recover_set+0x240/0x240
[  293.280016][ T4546]  ? snprintf+0xe5/0x140
[  293.284394][ T4546]  ? __free_pages+0x95/0x1a0
[  293.289022][ T4546]  ? vscnprintf+0x80/0x80
[  293.293487][ T4546]  gfs2_fill_super+0x120f/0x1f00
[  293.298487][ T4546]  ? gfs2_reconfigure+0xd30/0xd30
[  293.303670][ T4546]  ? sb_set_blocksize+0xa5/0xe0
[  293.308682][ T4546]  get_tree_bdev+0x3f1/0x610
[  293.313398][ T4546]  ? gfs2_reconfigure+0xd30/0xd30
[  293.318690][ T4546]  gfs2_get_tree+0x4d/0x1e0
[  293.323350][ T4546]  vfs_get_tree+0x88/0x270
[  293.327806][ T4546]  do_new_mount+0x24a/0xa40
[  293.332536][ T4546]  __se_sys_mount+0x2e3/0x3d0
[  293.337527][ T4546]  ? __x64_sys_mount+0xc0/0xc0
[  293.342570][ T4546]  ? lockdep_hardirqs_on+0x94/0x140
[  293.351280][ T4546]  ? __x64_sys_mount+0x1c/0xc0
[  293.356640][ T4546]  do_syscall_64+0x4c/0xa0
[  293.361153][ T4546]  ? clear_bhb_loop+0x30/0x80
[  293.366046][ T4546]  ? clear_bhb_loop+0x30/0x80
[  293.371473][ T4546]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  293.377775][ T4546] RIP: 0033:0x7f7aecfc7a8a
[  293.382741][ T4546] 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
[  293.403328][ T4546] RSP: 002b:00007f7aec5e5e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  293.412148][ T4546] RAX: ffffffffffffffda RBX: 00007f7aec5e5ee0 RCX: 00007f7aecfc7a8a
[  293.420170][ T4546] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f7aec5e5ea0
[  293.428470][ T4546] RBP: 00002000000124c0 R08: 00007f7aec5e5ee0 R09: 0000000000000000
[  293.436848][ T4546] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  293.445116][ T4546] R13: 00007f7aec5e5ea0 R14: 0000000000012616 R15: 0000200000000140
[  293.453360][ T4546]  </TASK>
[  293.478712][ T4562] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  293.486492][ T4562] CPU: 1 PID: 4562 Comm: syz.0.71 Not tainted syzkaller #0
[  293.491076][ T4550] gfs2: fsid=syz:syz.0: found 1 quota changes
[  293.494457][ T4562] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  293.494474][ T4562] Call Trace:
[  293.494482][ T4562]  <TASK>
[  293.494491][ T4562]  dump_stack_lvl+0x188/0x250
[  293.494521][ T4562]  ? show_regs_print_info+0x20/0x20
[  293.507051][ T4546] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  293.511097][ T4562]  ? load_image+0x400/0x400
[  293.514545][ T4546] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  293.517376][ T4562]  sysfs_create_dir_ns+0x26a/0x290
[  293.517405][ T4562]  ? sysfs_warn_dup+0xa0/0xa0
[  293.517426][ T4562]  ? do_raw_spin_unlock+0x11d/0x230
[  293.517451][ T4562]  kobject_add_internal+0x6e0/0xd90
[  293.517480][ T4562]  kobject_init_and_add+0x128/0x190
[  293.579597][ T4562]  ? lockdep_softirqs_off+0x430/0x430
[  293.585343][ T4562]  ? kobject_add+0x230/0x230
[  293.590087][ T4562]  ? __init_swait_queue_head+0xa5/0x150
[  293.595777][ T4562]  gfs2_sys_fs_add+0x24f/0x4b0
[  293.600587][ T4562]  ? gfs2_recover_set+0x240/0x240
[  293.605662][ T4562]  ? snprintf+0xe5/0x140
[  293.610117][ T4562]  ? __free_pages+0x95/0x1a0
[  293.614751][ T4562]  ? vscnprintf+0x80/0x80
[  293.619137][ T4562]  gfs2_fill_super+0x120f/0x1f00
[  293.624135][ T4562]  ? gfs2_reconfigure+0xd30/0xd30
[  293.629383][ T4562]  ? sb_set_blocksize+0xa5/0xe0
[  293.634527][ T4562]  get_tree_bdev+0x3f1/0x610
[  293.639296][ T4562]  ? gfs2_reconfigure+0xd30/0xd30
[  293.645058][ T4562]  gfs2_get_tree+0x4d/0x1e0
[  293.649711][ T4562]  vfs_get_tree+0x88/0x270
[  293.654260][ T4562]  do_new_mount+0x24a/0xa40
[  293.658812][ T4562]  __se_sys_mount+0x2e3/0x3d0
[  293.663525][ T4562]  ? __x64_sys_mount+0xc0/0xc0
[  293.668815][ T4562]  ? lockdep_hardirqs_on+0x94/0x140
[  293.674164][ T4562]  ? __x64_sys_mount+0x1c/0xc0
2026/04/05 10:10:14 executed programs: 70
[  293.679042][ T4562]  do_syscall_64+0x4c/0xa0
[  293.683494][ T4562]  ? clear_bhb_loop+0x30/0x80
[  293.688213][ T4562]  ? clear_bhb_loop+0x30/0x80
[  293.692935][ T4562]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  293.698863][ T4562] RIP: 0033:0x7ffba635ba8a
[  293.703500][ T4562] 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
[  293.723553][ T4562] RSP: 002b:00007ffba59bbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  293.732327][ T4562] RAX: ffffffffffffffda RBX: 00007ffba59bbee0 RCX: 00007ffba635ba8a
[  293.741311][ T4562] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba59bbea0
[  293.750073][ T4562] RBP: 00002000000124c0 R08: 00007ffba59bbee0 R09: 0000000000000000
[  293.761029][ T4562] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  293.769397][ T4562] R13: 00007ffba59bbea0 R14: 0000000000012616 R15: 0000200000000140
[  293.777939][ T4562]  </TASK>
[  293.781272][ T4562] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  293.795498][ T4562] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  293.836744][ T4338] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[  293.946246][ T4338] CPU: 1 PID: 4338 Comm: syz-executor Not tainted syzkaller #0
[  293.954272][ T4338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  293.964730][ T4338] Call Trace:
[  293.968139][ T4338]  <TASK>
[  293.971191][ T4338]  dump_stack_lvl+0x188/0x250
[  293.975922][ T4338]  ? show_regs_print_info+0x20/0x20
[  293.981169][ T4338]  ? load_image+0x400/0x400
[  293.985901][ T4338]  ? do_raw_spin_unlock+0x11d/0x230
[  293.991224][ T4338]  gfs2_assert_warn_i+0x18f/0x2c0
[  293.996481][ T4338]  gfs2_quota_cleanup+0x4b4/0x6a0
[  294.002182][ T4338]  gfs2_make_fs_ro+0x523/0x620
[  294.008021][ T4338]  ? gfs2_dinode_out+0xb00/0xb00
[  294.013266][ T4338]  ? gfs2_put_super+0x189/0x7d0
[  294.018337][ T4338]  ? __lock_acquire+0x7d10/0x7d10
[  294.023512][ T4338]  ? __rwlock_init+0x140/0x140
[  294.028567][ T4338]  ? hook_inode_free_security+0xa0/0xa0
[  294.034761][ T4338]  ? do_raw_spin_unlock+0x11d/0x230
[  294.040571][ T4338]  gfs2_put_super+0x1d2/0x7d0
[  294.045378][ T4338]  ? gfs2_evict_inode+0x1240/0x1240
[  294.051001][ T4338]  generic_shutdown_super+0x130/0x300
[  294.056604][ T4338]  kill_block_super+0x7c/0xe0
[  294.061438][ T4338]  deactivate_locked_super+0x93/0xf0
[  294.066859][ T4338]  cleanup_mnt+0x42d/0x4e0
[  294.071418][ T4338]  ? lockdep_hardirqs_on+0x94/0x140
[  294.076843][ T4338]  task_work_run+0x125/0x1a0
[  294.081681][ T4338]  exit_to_user_mode_loop+0x10f/0x130
[  294.087092][ T4338]  exit_to_user_mode_prepare+0xee/0x180
[  294.092675][ T4338]  syscall_exit_to_user_mode+0x16/0x40
[  294.098269][ T4338]  do_syscall_64+0x58/0xa0
[  294.102824][ T4338]  ? clear_bhb_loop+0x30/0x80
[  294.107636][ T4338]  ? clear_bhb_loop+0x30/0x80
[  294.112700][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  294.118628][ T4338] RIP: 0033:0x7f09ec5c9a57
[  294.123522][ T4338] 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
[  294.144045][ T4338] RSP: 002b:00007ffcd1182908 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  294.152604][ T4338] RAX: 0000000000000000 RBX: 00007f09ec65e048 RCX: 00007f09ec5c9a57
[  294.160882][ T4338] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcd11829c0
[  294.169063][ T4338] RBP: 00007ffcd11829c0 R08: 00007ffcd11839c0 R09: 00000000ffffffff
[  294.177078][ T4338] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd1183a50
[  294.185175][ T4338] R13: 00007f09ec65e048 R14: 000000000004731a R15: 00007ffcd1183a90
[  294.193378][ T4338]  </TASK>
[  294.320326][ T4567] loop0: detected capacity change from 0 to 32768
[  294.422692][ T4567] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[  294.431314][ T4567] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[  294.449042][ T4567] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[  294.460053][ T4396] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[  294.487388][    T9] team0 (unregistering): Port device team_slave_1 removed
[  294.507967][ T4396] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[  294.905553][ T4396] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 397ms
[  294.928852][    T9] team0 (unregistering): Port device team_slave_0 removed
[  294.979805][ T4396] gfs2: fsid=syz:syz.0: jid=0: Done
[  294.985291][ T4567] gfs2: fsid=syz:syz.0: first mount done, others may mount
[  295.016780][    T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[  295.146944][    T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[  295.234034][ T4573] loop3: detected capacity change from 0 to 32768
[  295.320909][ T4573] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  295.328699][ T4573] CPU: 0 PID: 4573 Comm: syz.3.80 Not tainted syzkaller #0
[  295.336307][ T4573] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  295.347211][ T4573] Call Trace:
[  295.351075][ T4573]  <TASK>
[  295.354042][ T4573]  dump_stack_lvl+0x188/0x250
[  295.358950][ T4573]  ? show_regs_print_info+0x20/0x20
[  295.364275][ T4573]  ? load_image+0x400/0x400
[  295.369039][ T4573]  sysfs_create_dir_ns+0x26a/0x290
[  295.374445][ T4573]  ? sysfs_warn_dup+0xa0/0xa0
[  295.379541][ T4573]  ? do_raw_spin_unlock+0x11d/0x230
[  295.385047][ T4573]  kobject_add_internal+0x6e0/0xd90
[  295.390464][ T4573]  kobject_init_and_add+0x128/0x190
[  295.396044][ T4573]  ? lockdep_softirqs_off+0x430/0x430
[  295.397706][ T4567] gfs2: fsid=syz:syz.0: found 1 quota changes
[  295.401632][ T4573]  ? kobject_add+0x230/0x230
[  295.412697][ T4573]  ? __init_swait_queue_head+0xa5/0x150
[  295.418380][ T4573]  gfs2_sys_fs_add+0x24f/0x4b0
[  295.421710][ T4557] loop1: detected capacity change from 0 to 32768
[  295.423181][ T4573]  ? gfs2_recover_set+0x240/0x240
[  295.435143][ T4573]  ? snprintf+0xe5/0x140
[  295.439605][ T4573]  ? __free_pages+0x95/0x1a0
[  295.444413][ T4573]  ? vscnprintf+0x80/0x80
[  295.448877][ T4573]  gfs2_fill_super+0x120f/0x1f00
[  295.454026][ T4573]  ? gfs2_reconfigure+0xd30/0xd30
[  295.459356][ T4573]  ? sb_set_blocksize+0xa5/0xe0
[  295.464247][ T4573]  get_tree_bdev+0x3f1/0x610
[  295.468898][ T4573]  ? gfs2_reconfigure+0xd30/0xd30
[  295.473965][ T4573]  gfs2_get_tree+0x4d/0x1e0
[  295.478512][ T4573]  vfs_get_tree+0x88/0x270
[  295.482970][ T4573]  do_new_mount+0x24a/0xa40
[  295.487700][ T4573]  __se_sys_mount+0x2e3/0x3d0
[  295.492587][ T4573]  ? __x64_sys_mount+0xc0/0xc0
[  295.497385][ T4573]  ? lockdep_hardirqs_on+0x94/0x140
[  295.503134][ T4573]  ? __x64_sys_mount+0x1c/0xc0
[  295.508027][ T4573]  do_syscall_64+0x4c/0xa0
[  295.512761][ T4573]  ? clear_bhb_loop+0x30/0x80
[  295.517691][ T4573]  ? clear_bhb_loop+0x30/0x80
[  295.522990][ T4573]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  295.529119][ T4573] RIP: 0033:0x7f09ec5c9a8a
[  295.533611][ T4573] 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
[  295.553801][ T4573] RSP: 002b:00007f09ebc29e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  295.562443][ T4573] RAX: ffffffffffffffda RBX: 00007f09ebc29ee0 RCX: 00007f09ec5c9a8a
[  295.570544][ T4573] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f09ebc29ea0
[  295.578828][ T4573] RBP: 00002000000124c0 R08: 00007f09ebc29ee0 R09: 0000000000000000
[  295.587299][ T4573] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  295.595487][ T4573] R13: 00007f09ebc29ea0 R14: 0000000000012616 R15: 0000200000000140
[  295.603963][ T4573]  </TASK>
[  295.607998][ T4573] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  295.611317][    T9] bond0 (unregistering): Released all slaves
[  295.621617][ T4573] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  295.687726][ T4328] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[  295.734275][ T4328] CPU: 0 PID: 4328 Comm: syz-executor Not tainted syzkaller #0
[  295.742672][ T4328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  295.753067][ T4328] Call Trace:
[  295.756379][ T4328]  <TASK>
[  295.759423][ T4328]  dump_stack_lvl+0x188/0x250
[  295.764250][ T4328]  ? show_regs_print_info+0x20/0x20
[  295.769675][ T4328]  ? load_image+0x400/0x400
[  295.774480][ T4328]  ? do_raw_spin_unlock+0x11d/0x230
[  295.780001][ T4328]  gfs2_assert_warn_i+0x18f/0x2c0
[  295.785360][ T4328]  gfs2_quota_cleanup+0x4b4/0x6a0
[  295.790558][ T4328]  gfs2_make_fs_ro+0x523/0x620
[  295.795650][ T4328]  ? gfs2_dinode_out+0xb00/0xb00
[  295.800920][ T4328]  ? gfs2_put_super+0x189/0x7d0
[  295.806018][ T4328]  ? __lock_acquire+0x7d10/0x7d10
[  295.811389][ T4328]  ? __rwlock_init+0x140/0x140
[  295.816355][ T4328]  ? hook_inode_free_security+0xa0/0xa0
[  295.821961][ T4328]  ? do_raw_spin_unlock+0x11d/0x230
[  295.827199][ T4328]  gfs2_put_super+0x1d2/0x7d0
[  295.831912][ T4328]  ? gfs2_evict_inode+0x1240/0x1240
[  295.837401][ T4328]  generic_shutdown_super+0x130/0x300
[  295.843222][ T4328]  kill_block_super+0x7c/0xe0
[  295.848027][ T4328]  deactivate_locked_super+0x93/0xf0
[  295.853788][ T4328]  cleanup_mnt+0x42d/0x4e0
[  295.858857][ T4328]  ? lockdep_hardirqs_on+0x94/0x140
[  295.864314][ T4328]  task_work_run+0x125/0x1a0
[  295.869061][ T4328]  exit_to_user_mode_loop+0x10f/0x130
[  295.875074][ T4328]  exit_to_user_mode_prepare+0xee/0x180
[  295.880764][ T4328]  syscall_exit_to_user_mode+0x16/0x40
[  295.886437][ T4328]  do_syscall_64+0x58/0xa0
[  295.891265][ T4328]  ? clear_bhb_loop+0x30/0x80
[  295.896149][ T4328]  ? clear_bhb_loop+0x30/0x80
[  295.901023][ T4328]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  295.907072][ T4328] RIP: 0033:0x7ffba635ba57
[  295.911531][ T4328] 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
[  295.931695][ T4328] RSP: 002b:00007fff8a1ce9c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  295.940632][ T4328] RAX: 0000000000000000 RBX: 00007ffba63f0048 RCX: 00007ffba635ba57
[  295.949038][ T4328] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff8a1cea80
[  295.957616][ T4328] RBP: 00007fff8a1cea80 R08: 00007fff8a1cfa80 R09: 00000000ffffffff
[  295.965885][ T4328] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8a1cfb10
[  295.974071][ T4328] R13: 00007ffba63f0048 R14: 0000000000047ce9 R15: 00007fff8a1cfb50
[  295.982277][ T4328]  </TASK>
[  296.890974][ T4583] loop3: detected capacity change from 0 to 32768
[  296.903149][ T4583] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[  296.911612][ T4583] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[  297.155839][ T4583] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
[  297.167048][ T4321] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[  297.173925][ T4321] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[  297.312021][ T4589] loop0: detected capacity change from 0 to 32768
[  297.426991][ T4589] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  297.435575][ T4589] CPU: 0 PID: 4589 Comm: syz.0.86 Not tainted syzkaller #0
[  297.443164][ T4589] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  297.453522][ T4589] Call Trace:
[  297.457173][ T4589]  <TASK>
[  297.460234][ T4589]  dump_stack_lvl+0x188/0x250
[  297.465669][ T4589]  ? show_regs_print_info+0x20/0x20
[  297.471246][ T4589]  ? load_image+0x400/0x400
[  297.475953][ T4589]  sysfs_create_dir_ns+0x26a/0x290
[  297.481480][ T4589]  ? sysfs_warn_dup+0xa0/0xa0
[  297.486571][ T4589]  ? do_raw_spin_unlock+0x11d/0x230
[  297.492252][ T4589]  kobject_add_internal+0x6e0/0xd90
[  297.497972][ T4589]  kobject_init_and_add+0x128/0x190
[  297.503481][ T4589]  ? lockdep_softirqs_off+0x430/0x430
[  297.508909][ T4589]  ? kobject_add+0x230/0x230
[  297.513687][ T4589]  ? __init_swait_queue_head+0xa5/0x150
[  297.519650][ T4589]  gfs2_sys_fs_add+0x24f/0x4b0
[  297.524560][ T4589]  ? gfs2_recover_set+0x240/0x240
[  297.530192][ T4589]  ? snprintf+0xe5/0x140
[  297.534480][ T4589]  ? __free_pages+0x95/0x1a0
[  297.539644][ T4589]  ? vscnprintf+0x80/0x80
[  297.544646][ T4589]  gfs2_fill_super+0x120f/0x1f00
[  297.549988][ T4589]  ? gfs2_reconfigure+0xd30/0xd30
[  297.555267][ T4589]  ? sb_set_blocksize+0xa5/0xe0
[  297.560886][ T4589]  get_tree_bdev+0x3f1/0x610
[  297.565527][ T4589]  ? gfs2_reconfigure+0xd30/0xd30
[  297.571343][ T4589]  gfs2_get_tree+0x4d/0x1e0
[  297.576147][ T4589]  vfs_get_tree+0x88/0x270
[  297.580702][ T4589]  do_new_mount+0x24a/0xa40
[  297.585438][ T4589]  __se_sys_mount+0x2e3/0x3d0
[  297.590603][ T4589]  ? __x64_sys_mount+0xc0/0xc0
[  297.595680][ T4589]  ? lockdep_hardirqs_on+0x94/0x140
[  297.601527][ T4589]  ? __x64_sys_mount+0x1c/0xc0
[  297.606517][ T4589]  do_syscall_64+0x4c/0xa0
[  297.611155][ T4589]  ? clear_bhb_loop+0x30/0x80
[  297.616039][ T4589]  ? clear_bhb_loop+0x30/0x80
[  297.620844][ T4589]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  297.627656][ T4589] RIP: 0033:0x7ffba635ba8a
[  297.632369][ T4589] 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
[  297.637317][ T4591] loop1: detected capacity change from 0 to 32768
[  297.653225][ T4589] RSP: 002b:00007ffba59bbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  297.653262][ T4589] RAX: ffffffffffffffda RBX: 00007ffba59bbee0 RCX: 00007ffba635ba8a
[  297.653279][ T4589] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba59bbea0
[  297.653293][ T4589] RBP: 00002000000124c0 R08: 00007ffba59bbee0 R09: 0000000000000000
[  297.697436][ T4589] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  297.705619][ T4589] R13: 00007ffba59bbea0 R14: 0000000000012616 R15: 0000200000000140
[  297.713727][ T4589]  </TASK>
[  297.719361][ T4589] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  297.733147][ T4589] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  297.759518][ T4591] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  297.767414][ T4591] CPU: 1 PID: 4591 Comm: syz.1.87 Not tainted syzkaller #0
[  297.774841][ T4591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  297.786084][ T4591] Call Trace:
[  297.789669][ T4591]  <TASK>
[  297.792957][ T4591]  dump_stack_lvl+0x188/0x250
[  297.797860][ T4591]  ? show_regs_print_info+0x20/0x20
[  297.803648][ T4591]  ? load_image+0x400/0x400
[  297.808563][ T4591]  sysfs_create_dir_ns+0x26a/0x290
[  297.814120][ T4591]  ? sysfs_warn_dup+0xa0/0xa0
[  297.818931][ T4591]  ? do_raw_spin_unlock+0x11d/0x230
[  297.824358][ T4591]  kobject_add_internal+0x6e0/0xd90
[  297.829705][ T4591]  kobject_init_and_add+0x128/0x190
[  297.835293][ T4591]  ? lockdep_softirqs_off+0x430/0x430
[  297.840900][ T4591]  ? kobject_add+0x230/0x230
[  297.845824][ T4591]  ? __init_swait_queue_head+0xa5/0x150
[  297.851690][ T4591]  gfs2_sys_fs_add+0x24f/0x4b0
[  297.856607][ T4591]  ? gfs2_recover_set+0x240/0x240
[  297.862152][ T4591]  ? snprintf+0xe5/0x140
[  297.866427][ T4591]  ? __free_pages+0x95/0x1a0
[  297.871491][ T4591]  ? vscnprintf+0x80/0x80
[  297.875965][ T4591]  gfs2_fill_super+0x120f/0x1f00
[  297.881146][ T4591]  ? gfs2_reconfigure+0xd30/0xd30
[  297.886931][ T4591]  ? sb_set_blocksize+0xa5/0xe0
[  297.891919][ T4591]  get_tree_bdev+0x3f1/0x610
[  297.896723][ T4591]  ? gfs2_reconfigure+0xd30/0xd30
[  297.902179][ T4591]  gfs2_get_tree+0x4d/0x1e0
[  297.906989][ T4591]  vfs_get_tree+0x88/0x270
[  297.911815][ T4591]  do_new_mount+0x24a/0xa40
[  297.916362][ T4591]  __se_sys_mount+0x2e3/0x3d0
[  297.921519][ T4591]  ? __x64_sys_mount+0xc0/0xc0
[  297.926405][ T4591]  ? lockdep_hardirqs_on+0x94/0x140
[  297.932529][ T4591]  ? __x64_sys_mount+0x1c/0xc0
[  297.937758][ T4591]  do_syscall_64+0x4c/0xa0
[  297.943033][ T4591]  ? clear_bhb_loop+0x30/0x80
[  297.947921][ T4591]  ? clear_bhb_loop+0x30/0x80
[  297.952808][ T4591]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  297.959193][ T4591] RIP: 0033:0x7fa918979a8a
[  297.964118][ T4591] 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
[  297.985387][ T4591] RSP: 002b:00007fa917fd9e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  297.994090][ T4591] RAX: ffffffffffffffda RBX: 00007fa917fd9ee0 RCX: 00007fa918979a8a
[  298.002769][ T4591] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fa917fd9ea0
[  298.011312][ T4591] RBP: 00002000000124c0 R08: 00007fa917fd9ee0 R09: 0000000000000000
[  298.020304][ T4591] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  298.028834][ T4591] R13: 00007fa917fd9ea0 R14: 0000000000012616 R15: 0000200000000140
[  298.037212][ T4591]  </TASK>
[  298.041588][ T4591] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  298.056447][ T4591] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  298.177945][ T4595] loop2: detected capacity change from 0 to 32768
[  298.188492][ T4321] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 1014ms
[  298.197514][ T4321] gfs2: fsid=syz:syz.0: jid=0: Done
[  298.203143][ T4583] gfs2: fsid=syz:syz.0: first mount done, others may mount
[  298.261101][ T4595] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  298.268709][ T4595] CPU: 0 PID: 4595 Comm: syz.2.89 Not tainted syzkaller #0
[  298.276054][ T4595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  298.286538][ T4595] Call Trace:
[  298.289863][ T4595]  <TASK>
[  298.292870][ T4595]  dump_stack_lvl+0x188/0x250
[  298.297768][ T4595]  ? show_regs_print_info+0x20/0x20
[  298.303012][ T4595]  ? load_image+0x400/0x400
[  298.307669][ T4595]  sysfs_create_dir_ns+0x26a/0x290
[  298.313151][ T4595]  ? sysfs_warn_dup+0xa0/0xa0
[  298.318693][ T4595]  ? do_raw_spin_unlock+0x11d/0x230
[  298.324135][ T4595]  kobject_add_internal+0x6e0/0xd90
[  298.329500][ T4595]  kobject_init_and_add+0x128/0x190
[  298.335000][ T4595]  ? lockdep_softirqs_off+0x430/0x430
[  298.340608][ T4595]  ? kobject_add+0x230/0x230
[  298.345350][ T4595]  ? __init_swait_queue_head+0xa5/0x150
[  298.351222][ T4595]  gfs2_sys_fs_add+0x24f/0x4b0
[  298.356032][ T4595]  ? gfs2_recover_set+0x240/0x240
[  298.361323][ T4595]  ? snprintf+0xe5/0x140
[  298.365686][ T4595]  ? __free_pages+0x95/0x1a0
[  298.370324][ T4595]  ? vscnprintf+0x80/0x80
[  298.374787][ T4595]  gfs2_fill_super+0x120f/0x1f00
[  298.380039][ T4595]  ? gfs2_reconfigure+0xd30/0xd30
[  298.385321][ T4595]  ? sb_set_blocksize+0xa5/0xe0
[  298.390207][ T4595]  get_tree_bdev+0x3f1/0x610
[  298.394828][ T4595]  ? gfs2_reconfigure+0xd30/0xd30
[  298.399878][ T4595]  gfs2_get_tree+0x4d/0x1e0
[  298.404468][ T4595]  vfs_get_tree+0x88/0x270
[  298.409233][ T4597] loop4: detected capacity change from 0 to 32768
[  298.409441][ T4595]  do_new_mount+0x24a/0xa40
[  298.420777][ T4595]  __se_sys_mount+0x2e3/0x3d0
[  298.425864][ T4595]  ? __x64_sys_mount+0xc0/0xc0
[  298.430734][ T4595]  ? lockdep_hardirqs_on+0x94/0x140
[  298.436322][ T4595]  ? __x64_sys_mount+0x1c/0xc0
[  298.441203][ T4595]  do_syscall_64+0x4c/0xa0
[  298.445929][ T4595]  ? clear_bhb_loop+0x30/0x80
[  298.451225][ T4595]  ? clear_bhb_loop+0x30/0x80
[  298.456312][ T4595]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  298.462333][ T4595] RIP: 0033:0x7f6a552d6a8a
[  298.466790][ T4595] 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
[  298.487103][ T4595] RSP: 002b:00007f6a54936e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  298.495745][ T4595] RAX: ffffffffffffffda RBX: 00007f6a54936ee0 RCX: 00007f6a552d6a8a
[  298.504361][ T4595] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f6a54936ea0
[  298.512455][ T4595] RBP: 00002000000124c0 R08: 00007f6a54936ee0 R09: 0000000000000000
[  298.520564][ T4595] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  298.528868][ T4595] R13: 00007f6a54936ea0 R14: 0000000000012616 R15: 0000200000000140
[  298.537721][ T4595]  </TASK>
[  298.546535][ T4595] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  298.560951][ T4595] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  298.688425][ T4597] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  298.696828][ T4597] CPU: 1 PID: 4597 Comm: syz.4.88 Not tainted syzkaller #0
[  298.704353][ T4597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  298.715343][ T4597] Call Trace:
[  298.719217][ T4597]  <TASK>
[  298.722279][ T4597]  dump_stack_lvl+0x188/0x250
[  298.727090][ T4597]  ? show_regs_print_info+0x20/0x20
[  298.732669][ T4597]  ? load_image+0x400/0x400
[  298.734317][ T4583] gfs2: fsid=syz:syz.0: found 1 quota changes
[  298.737498][ T4597]  sysfs_create_dir_ns+0x26a/0x290
[  298.737528][ T4597]  ? sysfs_warn_dup+0xa0/0xa0
[  298.737549][ T4597]  ? do_raw_spin_unlock+0x11d/0x230
[  298.758735][ T4599] gfs2: fsid=syz:syz.0: gfs2_quotad: sync error -57
[  298.760045][ T4597]  kobject_add_internal+0x6e0/0xd90
[  298.772727][ T4597]  kobject_init_and_add+0x128/0x190
[  298.778324][ T4597]  ? lockdep_softirqs_off+0x430/0x430
[  298.784457][ T4597]  ? kobject_add+0x230/0x230
[  298.789742][ T4597]  ? __init_swait_queue_head+0xa5/0x150
[  298.795903][ T4597]  gfs2_sys_fs_add+0x24f/0x4b0
[  298.801056][ T4597]  ? gfs2_recover_set+0x240/0x240
[  298.807405][ T4597]  ? snprintf+0xe5/0x140
[  298.812402][ T4597]  ? __free_pages+0x95/0x1a0
[  298.817571][ T4597]  ? vscnprintf+0x80/0x80
[  298.822218][ T4597]  gfs2_fill_super+0x120f/0x1f00
[  298.827388][ T4597]  ? gfs2_reconfigure+0xd30/0xd30
[  298.833218][ T4597]  ? sb_set_blocksize+0xa5/0xe0
[  298.838644][ T4597]  get_tree_bdev+0x3f1/0x610
[  298.843764][ T4597]  ? gfs2_reconfigure+0xd30/0xd30
[  298.849116][ T4597]  gfs2_get_tree+0x4d/0x1e0
[  298.853775][ T4597]  vfs_get_tree+0x88/0x270
[  298.858251][ T4597]  do_new_mount+0x24a/0xa40
[  298.863242][ T4597]  __se_sys_mount+0x2e3/0x3d0
[  298.868416][ T4597]  ? __x64_sys_mount+0xc0/0xc0
[  298.873412][ T4597]  ? lockdep_hardirqs_on+0x94/0x140
[  298.878911][ T4597]  ? __x64_sys_mount+0x1c/0xc0
[  298.884224][ T4597]  do_syscall_64+0x4c/0xa0
[  298.888795][ T4597]  ? clear_bhb_loop+0x30/0x80
[  298.893859][ T4597]  ? clear_bhb_loop+0x30/0x80
[  298.898835][ T4597]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  298.905502][ T4597] RIP: 0033:0x7f7aecfc7a8a
[  298.910707][ T4597] 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
[  298.931357][ T4597] RSP: 002b:00007f7aec627e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  298.940011][ T4597] RAX: ffffffffffffffda RBX: 00007f7aec627ee0 RCX: 00007f7aecfc7a8a
[  298.948555][ T4597] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f7aec627ea0
[  298.957262][ T4597] RBP: 00002000000124c0 R08: 00007f7aec627ee0 R09: 0000000000000000
[  298.965968][ T4597] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  298.974100][ T4597] R13: 00007f7aec627ea0 R14: 0000000000012616 R15: 0000200000000140
[  298.982679][ T4597]  </TASK>
2026/04/05 10:10:20 executed programs: 83
[  298.986906][ T4597] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  299.001443][ T4597] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  299.060344][ T4602] loop1: detected capacity change from 0 to 32768
[  299.227349][ T4338] gfs2: fsid=syz:syz.0: about to withdraw this file system
[  299.249976][ T4602] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  299.258255][ T4602] CPU: 0 PID: 4602 Comm: syz.1.90 Not tainted syzkaller #0
[  299.266412][ T4602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  299.277019][ T4602] Call Trace:
[  299.280555][ T4602]  <TASK>
[  299.283923][ T4602]  dump_stack_lvl+0x188/0x250
[  299.289214][ T4602]  ? show_regs_print_info+0x20/0x20
[  299.294942][ T4602]  ? load_image+0x400/0x400
[  299.299759][ T4602]  sysfs_create_dir_ns+0x26a/0x290
[  299.305601][ T4602]  ? sysfs_warn_dup+0xa0/0xa0
[  299.310494][ T4602]  ? do_raw_spin_unlock+0x11d/0x230
[  299.316163][ T4602]  kobject_add_internal+0x6e0/0xd90
[  299.321574][ T4602]  kobject_init_and_add+0x128/0x190
[  299.327088][ T4602]  ? lockdep_softirqs_off+0x430/0x430
[  299.329900][ T4603] loop0: detected capacity change from 0 to 32768
[  299.332746][ T4602]  ? kobject_add+0x230/0x230
[  299.344198][ T4602]  ? __init_swait_queue_head+0xa5/0x150
[  299.349992][ T4602]  gfs2_sys_fs_add+0x24f/0x4b0
[  299.354885][ T4602]  ? gfs2_recover_set+0x240/0x240
[  299.360063][ T4602]  ? snprintf+0xe5/0x140
[  299.364394][ T4602]  ? __free_pages+0x95/0x1a0
[  299.369307][ T4602]  ? vscnprintf+0x80/0x80
[  299.374218][ T4602]  gfs2_fill_super+0x120f/0x1f00
[  299.379308][ T4602]  ? gfs2_reconfigure+0xd30/0xd30
[  299.384486][ T4602]  ? sb_set_blocksize+0xa5/0xe0
[  299.389669][ T4602]  get_tree_bdev+0x3f1/0x610
[  299.394404][ T4602]  ? gfs2_reconfigure+0xd30/0xd30
[  299.399557][ T4602]  gfs2_get_tree+0x4d/0x1e0
[  299.404510][ T4602]  vfs_get_tree+0x88/0x270
[  299.409315][ T4602]  do_new_mount+0x24a/0xa40
[  299.414125][ T4602]  __se_sys_mount+0x2e3/0x3d0
[  299.419038][ T4602]  ? __x64_sys_mount+0xc0/0xc0
[  299.423929][ T4602]  ? lockdep_hardirqs_on+0x94/0x140
[  299.429518][ T4602]  ? __x64_sys_mount+0x1c/0xc0
[  299.434224][ T4338] gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
[  299.434506][ T4602]  do_syscall_64+0x4c/0xa0
[  299.454242][ T4602]  ? clear_bhb_loop+0x30/0x80
[  299.459564][ T4602]  ? clear_bhb_loop+0x30/0x80
[  299.464556][ T4602]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  299.470691][ T4602] RIP: 0033:0x7fa918979a8a
[  299.475335][ T4602] 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
[  299.495801][ T4602] RSP: 002b:00007fa917fd9e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  299.504462][ T4602] RAX: ffffffffffffffda RBX: 00007fa917fd9ee0 RCX: 00007fa918979a8a
[  299.512734][ T4602] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fa917fd9ea0
[  299.521024][ T4602] RBP: 00002000000124c0 R08: 00007fa917fd9ee0 R09: 0000000000000000
[  299.529122][ T4602] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  299.537748][ T4602] R13: 00007fa917fd9ea0 R14: 0000000000012616 R15: 0000200000000140
[  299.546123][ T4602]  </TASK>
[  299.550322][ T4602] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  299.564411][ T4602] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  299.677703][ T4603] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  299.686240][ T4603] CPU: 0 PID: 4603 Comm: syz.0.91 Not tainted syzkaller #0
[  299.694097][ T4603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  299.704730][ T4603] Call Trace:
[  299.708139][ T4603]  <TASK>
[  299.711481][ T4603]  dump_stack_lvl+0x188/0x250
[  299.716626][ T4603]  ? show_regs_print_info+0x20/0x20
[  299.722139][ T4603]  ? load_image+0x400/0x400
[  299.726685][ T4603]  sysfs_create_dir_ns+0x26a/0x290
[  299.731927][ T4603]  ? sysfs_warn_dup+0xa0/0xa0
[  299.736820][ T4603]  ? do_raw_spin_unlock+0x11d/0x230
[  299.742062][ T4603]  kobject_add_internal+0x6e0/0xd90
[  299.747402][ T4603]  kobject_init_and_add+0x128/0x190
[  299.752813][ T4603]  ? lockdep_softirqs_off+0x430/0x430
[  299.758228][ T4603]  ? kobject_add+0x230/0x230
[  299.763135][ T4603]  ? __init_swait_queue_head+0xa5/0x150
[  299.769014][ T4603]  gfs2_sys_fs_add+0x24f/0x4b0
[  299.773905][ T4603]  ? gfs2_recover_set+0x240/0x240
[  299.775334][ T4607] loop2: detected capacity change from 0 to 32768
[  299.779257][ T4603]  ? snprintf+0xe5/0x140
[  299.779284][ T4603]  ? __free_pages+0x95/0x1a0
[  299.795785][ T4603]  ? vscnprintf+0x80/0x80
[  299.800463][ T4603]  gfs2_fill_super+0x120f/0x1f00
[  299.805659][ T4603]  ? gfs2_reconfigure+0xd30/0xd30
[  299.810920][ T4603]  ? sb_set_blocksize+0xa5/0xe0
[  299.816446][ T4603]  get_tree_bdev+0x3f1/0x610
[  299.821281][ T4603]  ? gfs2_reconfigure+0xd30/0xd30
[  299.826602][ T4603]  gfs2_get_tree+0x4d/0x1e0
[  299.831330][ T4603]  vfs_get_tree+0x88/0x270
[  299.835769][ T4603]  do_new_mount+0x24a/0xa40
[  299.840324][ T4603]  __se_sys_mount+0x2e3/0x3d0
[  299.845214][ T4603]  ? __x64_sys_mount+0xc0/0xc0
[  299.850081][ T4603]  ? lockdep_hardirqs_on+0x94/0x140
[  299.855594][ T4603]  ? __x64_sys_mount+0x1c/0xc0
[  299.860776][ T4603]  do_syscall_64+0x4c/0xa0
[  299.865283][ T4603]  ? clear_bhb_loop+0x30/0x80
[  299.870148][ T4603]  ? clear_bhb_loop+0x30/0x80
[  299.874828][ T4603]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  299.881184][ T4603] RIP: 0033:0x7ffba635ba8a
[  299.885613][ T4603] 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
[  299.905879][ T4603] RSP: 002b:00007ffba59bbe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  299.914754][ T4603] RAX: ffffffffffffffda RBX: 00007ffba59bbee0 RCX: 00007ffba635ba8a
[  299.923001][ T4603] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007ffba59bbea0
[  299.931352][ T4603] RBP: 00002000000124c0 R08: 00007ffba59bbee0 R09: 0000000000000000
[  299.939699][ T4603] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  299.948025][ T4603] R13: 00007ffba59bbea0 R14: 0000000000012616 R15: 0000200000000140
[  299.956805][ T4603]  </TASK>
[  299.959977][ T4603] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  299.973149][ T4603] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  299.989677][ T4338] CPU: 0 PID: 4338 Comm: syz-executor Not tainted syzkaller #0
[  299.997378][ T4338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  300.000602][ T4607] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  300.008346][ T4338] Call Trace:
[  300.008357][ T4338]  <TASK>
[  300.008365][ T4338]  dump_stack_lvl+0x188/0x250
[  300.008396][ T4338]  ? show_regs_print_info+0x20/0x20
[  300.034310][ T4338]  ? load_image+0x400/0x400
[  300.039110][ T4338]  ? do_raw_spin_unlock+0x11d/0x230
[  300.044707][ T4338]  gfs2_assert_warn_i+0x18f/0x2c0
[  300.051166][ T4338]  gfs2_quota_cleanup+0x4b4/0x6a0
[  300.056482][ T4338]  gfs2_make_fs_ro+0x440/0x620
[  300.061357][ T4338]  ? __might_sleep+0xf0/0xf0
[  300.065984][ T4338]  ? gfs2_dinode_out+0xb00/0xb00
[  300.071226][ T4338]  ? _raw_spin_unlock+0x24/0x40
[  300.076264][ T4338]  ? gfs2_glock_nq+0xcb0/0x1550
[  300.081147][ T4338]  gfs2_withdraw+0x610/0x1490
[  300.085843][ T4338]  ? gfs2_lm+0x240/0x240
[  300.090296][ T4338]  ? rwsem_write_trylock+0x135/0x1c0
[  300.095904][ T4338]  ? gfs2_freeze_lock+0x52/0xc0
[  300.100856][ T4338]  ? up_write+0x1bb/0x420
[  300.105464][ T4338]  gfs2_log_flush+0x1e1a/0x2600
[  300.110474][ T4338]  ? gfs2_ail_empty_tr+0x2f0/0x2f0
[  300.115895][ T4338]  ? do_sync+0x955/0xc40
[  300.120785][ T4338]  ? kfree+0xef/0x2a0
[  300.124964][ T4338]  do_sync+0x9b0/0xc40
[  300.129413][ T4338]  ? slot_put+0x1e0/0x1e0
[  300.133861][ T4338]  ? __lock_acquire+0x7d10/0x7d10
[  300.139424][ T4338]  ? do_raw_spin_lock+0x128/0x2f0
[  300.144658][ T4338]  ? do_raw_spin_unlock+0x11d/0x230
[  300.150078][ T4338]  gfs2_quota_sync+0x32c/0x700
[  300.155510][ T4338]  gfs2_sync_fs+0x48/0xb0
[  300.159860][ T4338]  sync_filesystem+0xe6/0x220
[  300.164895][ T4338]  generic_shutdown_super+0x6b/0x300
[  300.170555][ T4338]  kill_block_super+0x7c/0xe0
[  300.175329][ T4338]  deactivate_locked_super+0x93/0xf0
[  300.180650][ T4338]  cleanup_mnt+0x42d/0x4e0
[  300.185162][ T4338]  ? lockdep_hardirqs_on+0x94/0x140
[  300.192470][ T4338]  task_work_run+0x125/0x1a0
[  300.197262][ T4338]  exit_to_user_mode_loop+0x10f/0x130
[  300.202650][ T4338]  exit_to_user_mode_prepare+0xee/0x180
[  300.209008][ T4338]  syscall_exit_to_user_mode+0x16/0x40
[  300.214586][ T4338]  do_syscall_64+0x58/0xa0
[  300.219502][ T4338]  ? clear_bhb_loop+0x30/0x80
[  300.224575][ T4338]  ? clear_bhb_loop+0x30/0x80
[  300.229446][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  300.235646][ T4338] RIP: 0033:0x7f09ec5c9a57
[  300.240612][ T4338] 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
[  300.261766][ T4338] RSP: 002b:00007ffcd1182908 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  300.271014][ T4338] RAX: 0000000000000000 RBX: 00007f09ec65e048 RCX: 00007f09ec5c9a57
[  300.279095][ T4338] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcd11829c0
[  300.287511][ T4338] RBP: 00007ffcd11829c0 R08: 00007ffcd11839c0 R09: 00000000ffffffff
[  300.295768][ T4338] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd1183a50
[  300.304461][ T4338] R13: 00007f09ec65e048 R14: 0000000000048674 R15: 00007ffcd1183a90
[  300.312756][ T4338]  </TASK>
[  300.316178][ T4607] CPU: 1 PID: 4607 Comm: syz.2.93 Not tainted syzkaller #0
[  300.323636][ T4607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  300.334387][ T4607] Call Trace:
[  300.338048][ T4607]  <TASK>
[  300.341105][ T4607]  dump_stack_lvl+0x188/0x250
[  300.346359][ T4607]  ? show_regs_print_info+0x20/0x20
[  300.352206][ T4607]  ? load_image+0x400/0x400
[  300.357781][ T4607]  sysfs_create_dir_ns+0x26a/0x290
[  300.363585][ T4607]  ? sysfs_warn_dup+0xa0/0xa0
[  300.368677][ T4607]  ? do_raw_spin_unlock+0x11d/0x230
[  300.374193][ T4607]  kobject_add_internal+0x6e0/0xd90
[  300.380164][ T4607]  kobject_init_and_add+0x128/0x190
[  300.385992][ T4607]  ? lockdep_softirqs_off+0x430/0x430
[  300.392135][ T4607]  ? kobject_add+0x230/0x230
[  300.397184][ T4607]  ? __init_swait_queue_head+0xa5/0x150
[  300.403784][ T4607]  gfs2_sys_fs_add+0x24f/0x4b0
[  300.408953][ T4607]  ? gfs2_recover_set+0x240/0x240
[  300.414119][ T4607]  ? snprintf+0xe5/0x140
[  300.418566][ T4607]  ? __free_pages+0x95/0x1a0
[  300.423480][ T4607]  ? vscnprintf+0x80/0x80
[  300.427936][ T4607]  gfs2_fill_super+0x120f/0x1f00
[  300.433281][ T4607]  ? gfs2_reconfigure+0xd30/0xd30
[  300.438721][ T4607]  ? sb_set_blocksize+0xa5/0xe0
[  300.444513][ T4607]  get_tree_bdev+0x3f1/0x610
[  300.449448][ T4607]  ? gfs2_reconfigure+0xd30/0xd30
[  300.454965][ T4607]  gfs2_get_tree+0x4d/0x1e0
[  300.460315][ T4607]  vfs_get_tree+0x88/0x270
[  300.465205][ T4607]  do_new_mount+0x24a/0xa40
[  300.469930][ T4607]  __se_sys_mount+0x2e3/0x3d0
[  300.475065][ T4607]  ? __x64_sys_mount+0xc0/0xc0
[  300.480160][ T4607]  ? lockdep_hardirqs_on+0x94/0x140
[  300.486112][ T4607]  ? __x64_sys_mount+0x1c/0xc0
[  300.491385][ T4607]  do_syscall_64+0x4c/0xa0
[  300.496138][ T4607]  ? clear_bhb_loop+0x30/0x80
[  300.501004][ T4607]  ? clear_bhb_loop+0x30/0x80
[  300.505786][ T4607]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  300.511871][ T4607] RIP: 0033:0x7f6a552d6a8a
[  300.516487][ T4607] 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
[  300.536841][ T4607] RSP: 002b:00007f6a54936e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  300.546037][ T4607] RAX: ffffffffffffffda RBX: 00007f6a54936ee0 RCX: 00007f6a552d6a8a
[  300.554641][ T4607] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f6a54936ea0
[  300.563512][ T4607] RBP: 00002000000124c0 R08: 00007f6a54936ee0 R09: 0000000000000000
[  300.572107][ T4607] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  300.580474][ T4607] R13: 00007f6a54936ea0 R14: 0000000000012616 R15: 0000200000000140
[  300.589089][ T4607]  </TASK>
[  300.593545][ T4607] kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  300.608782][ T4607] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  300.617403][ T4338] gfs2: fsid=syz:syz.0: Journal recovery skipped for jid 0 until next mount.
[  300.735650][ T4338] gfs2: fsid=syz:syz.0: Glock dequeues delayed: 0
[  300.757057][ T4338] gfs2: fsid=syz:syz.0: File system withdrawn
[  300.806929][ T4338] CPU: 0 PID: 4338 Comm: syz-executor Not tainted syzkaller #0
[  300.814909][ T4338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  300.826351][ T4338] Call Trace:
[  300.829857][ T4338]  <TASK>
[  300.833183][ T4338]  dump_stack_lvl+0x188/0x250
[  300.838515][ T4338]  ? kobject_uevent_env+0x371/0x890
[  300.843929][ T4338]  ? show_regs_print_info+0x20/0x20
[  300.849446][ T4338]  ? load_image+0x400/0x400
[  300.854077][ T4338]  ? kobject_uevent_env+0x371/0x890
[  300.859417][ T4338]  ? lockref_put_or_lock+0x6e/0xb0
[  300.865743][ T4338]  gfs2_withdraw+0x1149/0x1490
[  300.870744][ T4338]  ? gfs2_lm+0x240/0x240
[  300.875560][ T4338]  ? rwsem_write_trylock+0x135/0x1c0
[  300.881558][ T4338]  ? up_write+0x1bb/0x420
[  300.886124][ T4338]  gfs2_log_flush+0x1e1a/0x2600
[  300.891374][ T4338]  ? gfs2_ail_empty_tr+0x2f0/0x2f0
[  300.896624][ T4338]  ? do_sync+0x955/0xc40
[  300.901081][ T4338]  ? kfree+0xef/0x2a0
[  300.905491][ T4338]  do_sync+0x9b0/0xc40
[  300.910007][ T4338]  ? slot_put+0x1e0/0x1e0
[  300.914739][ T4338]  ? __lock_acquire+0x7d10/0x7d10
[  300.920356][ T4338]  ? do_raw_spin_lock+0x128/0x2f0
[  300.925791][ T4338]  ? do_raw_spin_unlock+0x11d/0x230
[  300.931095][ T4610] loop4: detected capacity change from 0 to 32768
[  300.931159][ T4338]  gfs2_quota_sync+0x32c/0x700
[  300.942653][ T4338]  gfs2_sync_fs+0x48/0xb0
[  300.947206][ T4338]  sync_filesystem+0xe6/0x220
[  300.952178][ T4338]  generic_shutdown_super+0x6b/0x300
[  300.957855][ T4338]  kill_block_super+0x7c/0xe0
[  300.962570][ T4338]  deactivate_locked_super+0x93/0xf0
[  300.967888][ T4338]  cleanup_mnt+0x42d/0x4e0
[  300.972344][ T4338]  ? lockdep_hardirqs_on+0x94/0x140
[  300.977588][ T4338]  task_work_run+0x125/0x1a0
[  300.982391][ T4338]  exit_to_user_mode_loop+0x10f/0x130
[  300.988095][ T4338]  exit_to_user_mode_prepare+0xee/0x180
[  300.993943][ T4338]  syscall_exit_to_user_mode+0x16/0x40
[  300.999813][ T4338]  do_syscall_64+0x58/0xa0
[  301.004402][ T4338]  ? clear_bhb_loop+0x30/0x80
[  301.009391][ T4338]  ? clear_bhb_loop+0x30/0x80
[  301.014192][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  301.020566][ T4338] RIP: 0033:0x7f09ec5c9a57
[  301.025302][ T4338] 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
[  301.046048][ T4338] RSP: 002b:00007ffcd1182908 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  301.054805][ T4338] RAX: 0000000000000000 RBX: 00007f09ec65e048 RCX: 00007f09ec5c9a57
[  301.063259][ T4338] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcd11829c0
[  301.071896][ T4338] RBP: 00007ffcd11829c0 R08: 00007ffcd11839c0 R09: 00000000ffffffff
[  301.079976][ T4338] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd1183a50
[  301.088250][ T4338] R13: 00007f09ec65e048 R14: 0000000000048674 R15: 00007ffcd1183a90
[  301.096807][ T4338]  </TASK>
[  301.265549][ T4338] ==================================================================
[  301.274025][ T4338] BUG: KASAN: use-after-free in qd_unlock+0x30/0x2d0
[  301.280925][ T4338] Read of size 8 at addr ffff8880747e4090 by task syz-executor/4338
[  301.289224][ T4338] 
[  301.291572][ T4338] CPU: 1 PID: 4338 Comm: syz-executor Not tainted syzkaller #0
[  301.299495][ T4338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  301.310151][ T4338] Call Trace:
[  301.313749][ T4338]  <TASK>
[  301.316827][ T4338]  dump_stack_lvl+0x188/0x250
[  301.321835][ T4338]  ? show_regs_print_info+0x20/0x20
[  301.327069][ T4338]  ? _printk+0xda/0x130
[  301.331348][ T4338]  ? qd_unlock+0x30/0x2d0
[  301.336055][ T4338]  ? load_image+0x400/0x400
[  301.340631][ T4338]  ? _raw_spin_lock_irqsave+0xbc/0x100
[  301.346416][ T4338]  print_address_description+0x60/0x2d0
[  301.352382][ T4338]  ? qd_unlock+0x30/0x2d0
[  301.357047][ T4338]  kasan_report+0xdf/0x130
[  301.361866][ T4338]  ? qd_unlock+0x30/0x2d0
[  301.366798][ T4338]  kasan_check_range+0x235/0x290
[  301.371883][ T4338]  qd_unlock+0x30/0x2d0
[  301.376187][ T4338]  gfs2_quota_sync+0x5cf/0x700
[  301.380992][ T4338]  gfs2_sync_fs+0x48/0xb0
[  301.385550][ T4338]  sync_filesystem+0xe6/0x220
[  301.390548][ T4338]  generic_shutdown_super+0x6b/0x300
[  301.396061][ T4338]  kill_block_super+0x7c/0xe0
[  301.401042][ T4338]  deactivate_locked_super+0x93/0xf0
[  301.406676][ T4338]  cleanup_mnt+0x42d/0x4e0
[  301.411240][ T4338]  ? lockdep_hardirqs_on+0x94/0x140
[  301.416647][ T4338]  task_work_run+0x125/0x1a0
[  301.421293][ T4338]  exit_to_user_mode_loop+0x10f/0x130
[  301.426889][ T4338]  exit_to_user_mode_prepare+0xee/0x180
[  301.432517][ T4338]  syscall_exit_to_user_mode+0x16/0x40
[  301.438578][ T4338]  do_syscall_64+0x58/0xa0
[  301.443468][ T4338]  ? clear_bhb_loop+0x30/0x80
[  301.448278][ T4338]  ? clear_bhb_loop+0x30/0x80
[  301.453003][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  301.459222][ T4338] RIP: 0033:0x7f09ec5c9a57
[  301.464033][ T4338] 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
[  301.484350][ T4338] RSP: 002b:00007ffcd1182908 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  301.493208][ T4338] RAX: 0000000000000000 RBX: 00007f09ec65e048 RCX: 00007f09ec5c9a57
[  301.501401][ T4338] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcd11829c0
[  301.509784][ T4338] RBP: 00007ffcd11829c0 R08: 00007ffcd11839c0 R09: 00000000ffffffff
[  301.517994][ T4338] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd1183a50
[  301.527043][ T4338] R13: 00007f09ec65e048 R14: 0000000000048674 R15: 00007ffcd1183a90
[  301.535336][ T4338]  </TASK>
[  301.538558][ T4338] 
[  301.540921][ T4338] Allocated by task 4583:
[  301.545281][ T4338]  __kasan_slab_alloc+0x9c/0xd0
[  301.550460][ T4338]  slab_post_alloc_hook+0x4c/0x380
[  301.557659][ T4338]  kmem_cache_alloc+0x100/0x290
[  301.562722][ T4338]  qd_alloc+0x50/0x260
[  301.566978][ T4338]  gfs2_quota_init+0x74e/0xea0
[  301.572132][ T4338]  gfs2_make_fs_rw+0x414/0x580
[  301.577084][ T4338]  gfs2_fill_super+0x1837/0x1f00
[  301.582431][ T4338]  get_tree_bdev+0x3f1/0x610
[  301.583974][ T4615] loop2: detected capacity change from 0 to 32768
[  301.587432][ T4338]  gfs2_get_tree+0x4d/0x1e0
[  301.587473][ T4338]  vfs_get_tree+0x88/0x270
[  301.587503][ T4338]  do_new_mount+0x24a/0xa40
[  301.608328][ T4338]  __se_sys_mount+0x2e3/0x3d0
[  301.613130][ T4338]  do_syscall_64+0x4c/0xa0
[  301.617838][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  301.624082][ T4338] 
[  301.626421][ T4338] Freed by task 4610:
[  301.630420][ T4338]  kasan_set_track+0x4b/0x70
[  301.635044][ T4338]  kasan_set_free_info+0x1f/0x40
[  301.640011][ T4338]  ____kasan_slab_free+0xd5/0x110
[  301.645147][ T4338]  slab_free_freelist_hook+0xea/0x170
[  301.650795][ T4338]  kmem_cache_free+0x8f/0x210
[  301.656057][ T4338]  rcu_core+0x9d2/0x1670
[  301.661113][ T4338]  handle_softirqs+0x339/0x830
[  301.666083][ T4338]  __irq_exit_rcu+0x13b/0x230
[  301.671057][ T4338]  irq_exit_rcu+0x5/0x20
[  301.675640][ T4338]  sysvec_apic_timer_interrupt+0xa0/0xc0
[  301.681455][ T4338]  asm_sysvec_apic_timer_interrupt+0x16/0x20
[  301.687703][ T4338] 
[  301.690176][ T4338] Last potentially related work creation:
[  301.696242][ T4338]  kasan_save_stack+0x35/0x60
[  301.701068][ T4338]  kasan_record_aux_stack+0xb8/0x100
[  301.706685][ T4338]  call_rcu+0x189/0x950
[  301.711039][ T4338]  gfs2_quota_cleanup+0x43c/0x6a0
[  301.716447][ T4338]  gfs2_make_fs_ro+0x440/0x620
[  301.721519][ T4338]  gfs2_withdraw+0x610/0x1490
[  301.726394][ T4338]  gfs2_log_flush+0x1e1a/0x2600
[  301.731536][ T4338]  do_sync+0x9b0/0xc40
[  301.735697][ T4338]  gfs2_quota_sync+0x32c/0x700
[  301.740471][ T4338]  gfs2_sync_fs+0x48/0xb0
[  301.744975][ T4338]  sync_filesystem+0xe6/0x220
[  301.749681][ T4338]  generic_shutdown_super+0x6b/0x300
[  301.755118][ T4338]  kill_block_super+0x7c/0xe0
[  301.760089][ T4338]  deactivate_locked_super+0x93/0xf0
[  301.765606][ T4338]  cleanup_mnt+0x42d/0x4e0
[  301.770118][ T4338]  task_work_run+0x125/0x1a0
[  301.775872][ T4338]  exit_to_user_mode_loop+0x10f/0x130
[  301.781468][ T4338]  exit_to_user_mode_prepare+0xee/0x180
[  301.787020][ T4338]  syscall_exit_to_user_mode+0x16/0x40
[  301.793099][ T4338]  do_syscall_64+0x58/0xa0
[  301.797794][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  301.803800][ T4338] 
[  301.806121][ T4338] Second to last potentially related work creation:
[  301.812893][ T4338]  kasan_save_stack+0x35/0x60
[  301.817779][ T4338]  kasan_record_aux_stack+0xb8/0x100
[  301.823298][ T4338]  call_rcu+0x189/0x950
[  301.827498][ T4338]  gfs2_quota_cleanup+0x43c/0x6a0
[  301.832726][ T4338]  gfs2_make_fs_ro+0x523/0x620
[  301.858773][ T4338]  gfs2_put_super+0x1d2/0x7d0
[  301.863606][ T4338]  generic_shutdown_super+0x130/0x300
[  301.869232][ T4338]  kill_block_super+0x7c/0xe0
[  301.874124][ T4338]  deactivate_locked_super+0x93/0xf0
[  301.879417][ T4338]  cleanup_mnt+0x42d/0x4e0
[  301.884010][ T4338]  task_work_run+0x125/0x1a0
[  301.888641][ T4338]  exit_to_user_mode_loop+0x10f/0x130
[  301.894398][ T4338]  exit_to_user_mode_prepare+0xee/0x180
[  301.899961][ T4338]  syscall_exit_to_user_mode+0x16/0x40
[  301.905736][ T4338]  do_syscall_64+0x58/0xa0
[  301.910379][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  301.916472][ T4338] 
[  301.918910][ T4338] The buggy address belongs to the object at ffff8880747e4000
[  301.918910][ T4338]  which belongs to the cache gfs2_quotad of size 272
[  301.933276][ T4338] The buggy address is located 144 bytes inside of
[  301.933276][ T4338]  272-byte region [ffff8880747e4000, ffff8880747e4110)
[  301.947438][ T4338] The buggy address belongs to the page:
[  301.953226][ T4338] page:ffffea0001d1f900 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880747e43f0 pfn:0x747e4
[  301.965127][ T4338] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
[  301.973223][ T4338] raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888146910140
[  301.982996][ T4338] raw: ffff8880747e43f0 00000000800c000a 00000001ffffffff 0000000000000000
[  301.991788][ T4338] page dumped because: kasan: bad access detected
[  301.998391][ T4338] page_owner tracks the page as allocated
[  302.004389][ T4338] page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 4400, ts 266863801655, free_ts 265124287478
[  302.024634][ T4338]  get_page_from_freelist+0x1bbd/0x1ca0
[  302.030676][ T4338]  __alloc_pages+0x1ee/0x480
[  302.035307][ T4338]  new_slab+0xc0/0x4b0
[  302.039486][ T4338]  ___slab_alloc+0x80a/0xdd0
[  302.044559][ T4338]  kmem_cache_alloc+0x195/0x290
[  302.049703][ T4338]  qd_alloc+0x50/0x260
[  302.053969][ T4338]  gfs2_quota_init+0x74e/0xea0
[  302.058828][ T4338]  gfs2_make_fs_rw+0x414/0x580
[  302.063816][ T4338]  gfs2_fill_super+0x1837/0x1f00
[  302.069147][ T4338]  get_tree_bdev+0x3f1/0x610
[  302.073965][ T4338]  gfs2_get_tree+0x4d/0x1e0
[  302.078580][ T4338]  vfs_get_tree+0x88/0x270
[  302.083101][ T4338]  do_new_mount+0x24a/0xa40
[  302.087781][ T4338]  __se_sys_mount+0x2e3/0x3d0
[  302.092587][ T4338]  do_syscall_64+0x4c/0xa0
[  302.097474][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  302.104192][ T4338] page last free stack trace:
[  302.109019][ T4338]  free_unref_page_prepare+0x637/0x6c0
[  302.114742][ T4338]  free_unref_page+0x8f/0x2a0
[  302.120020][ T4338]  __unfreeze_partials+0x1a5/0x200
[  302.125173][ T4338]  put_cpu_partial+0x12d/0x190
[  302.129948][ T4338]  qlist_free_all+0x35/0x90
[  302.135200][ T4338]  kasan_quarantine_reduce+0x150/0x160
[  302.141421][ T4338]  __kasan_kmalloc_large+0x16/0xa0
[  302.146698][ T4338]  kmalloc_order+0xeb/0x150
[  302.151635][ T4338]  kmalloc_order_trace+0x14/0xf0
[  302.156806][ T4338]  geneve_sock_add+0x2e3/0x960
[  302.161808][ T4338]  geneve_open+0x88/0x140
[  302.166240][ T4338]  __dev_open+0x2bf/0x430
[  302.170613][ T4338]  __dev_change_flags+0x20d/0x6a0
[  302.175648][ T4338]  dev_change_flags+0x82/0x1a0
[  302.181854][ T4338]  do_setlink+0xcdb/0x3d60
[  302.186288][ T4338]  rtnl_newlink+0x1658/0x1a50
[  302.190999][ T4338] 
[  302.193397][ T4338] Memory state around the buggy address:
[  302.199163][ T4338]  ffff8880747e3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  302.207758][ T4338]  ffff8880747e4000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  302.216775][ T4338] >ffff8880747e4080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  302.225174][ T4338]                          ^
[  302.230034][ T4338]  ffff8880747e4100: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb
[  302.238691][ T4338]  ffff8880747e4180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  302.247324][ T4338] ==================================================================
[  302.255670][ T4338] Disabling lock debugging due to kernel taint
[  302.264141][ T4338] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[  302.271565][ T4610] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  302.271725][ T4338] CPU: 0 PID: 4338 Comm: syz-executor Tainted: G    B             syzkaller #0
[  302.288369][ T4338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  302.298619][ T4338] Call Trace:
[  302.301908][ T4338]  <TASK>
[  302.304850][ T4338]  dump_stack_lvl+0x188/0x250
[  302.309536][ T4338]  ? show_regs_print_info+0x20/0x20
[  302.315041][ T4338]  ? load_image+0x400/0x400
[  302.319649][ T4338]  panic+0x2e5/0x810
[  302.323646][ T4338]  ? asm_sysvec_apic_timer_interrupt+0x16/0x20
[  302.329948][ T4338]  ? bpf_jit_dump+0xd0/0xd0
[  302.334496][ T4338]  ? _raw_spin_unlock_irqrestore+0x10d/0x120
[  302.340582][ T4338]  ? _raw_spin_unlock+0x40/0x40
[  302.345624][ T4338]  ? qd_unlock+0x30/0x2d0
[  302.349960][ T4338]  check_panic_on_warn+0x80/0xa0
[  302.354906][ T4338]  ? qd_unlock+0x30/0x2d0
[  302.359418][ T4338]  end_report+0x6d/0xf0
[  302.363582][ T4338]  kasan_report+0x102/0x130
[  302.368097][ T4338]  ? qd_unlock+0x30/0x2d0
[  302.372443][ T4338]  kasan_check_range+0x235/0x290
[  302.378015][ T4338]  qd_unlock+0x30/0x2d0
[  302.382189][ T4338]  gfs2_quota_sync+0x5cf/0x700
[  302.387240][ T4338]  gfs2_sync_fs+0x48/0xb0
[  302.392114][ T4338]  sync_filesystem+0xe6/0x220
[  302.396970][ T4338]  generic_shutdown_super+0x6b/0x300
[  302.402266][ T4338]  kill_block_super+0x7c/0xe0
[  302.407330][ T4338]  deactivate_locked_super+0x93/0xf0
[  302.412934][ T4338]  cleanup_mnt+0x42d/0x4e0
[  302.417385][ T4338]  ? lockdep_hardirqs_on+0x94/0x140
[  302.422594][ T4338]  task_work_run+0x125/0x1a0
[  302.427563][ T4338]  exit_to_user_mode_loop+0x10f/0x130
[  302.433756][ T4338]  exit_to_user_mode_prepare+0xee/0x180
[  302.439684][ T4338]  syscall_exit_to_user_mode+0x16/0x40
[  302.445522][ T4338]  do_syscall_64+0x58/0xa0
[  302.449966][ T4338]  ? clear_bhb_loop+0x30/0x80
[  302.455017][ T4338]  ? clear_bhb_loop+0x30/0x80
[  302.460156][ T4338]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  302.466340][ T4338] RIP: 0033:0x7f09ec5c9a57
[  302.470937][ T4338] 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
[  302.490842][ T4338] RSP: 002b:00007ffcd1182908 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  302.499437][ T4338] RAX: 0000000000000000 RBX: 00007f09ec65e048 RCX: 00007f09ec5c9a57
[  302.507590][ T4338] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcd11829c0
[  302.516217][ T4338] RBP: 00007ffcd11829c0 R08: 00007ffcd11839c0 R09: 00000000ffffffff
[  302.524666][ T4338] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd1183a50
[  302.532937][ T4338] R13: 00007f09ec65e048 R14: 0000000000048674 R15: 00007ffcd1183a90
[  302.541095][ T4338]  </TASK>
[  302.544213][ T4610] CPU: 1 PID: 4610 Comm: syz.4.95 Tainted: G    B             syzkaller #0
[  302.552818][ T4610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[  302.563494][ T4610] Call Trace:
[  302.566783][ T4610]  <TASK>
[  302.569902][ T4610]  dump_stack_lvl+0x188/0x250
[  302.574689][ T4610]  ? show_regs_print_info+0x20/0x20
[  302.580339][ T4610]  ? load_image+0x400/0x400
[  302.585038][ T4610]  sysfs_create_dir_ns+0x26a/0x290
[  302.590705][ T4610]  ? sysfs_warn_dup+0xa0/0xa0
[  302.595394][ T4610]  ? do_raw_spin_unlock+0x11d/0x230
[  302.600996][ T4610]  kobject_add_internal+0x6e0/0xd90
[  302.606412][ T4610]  kobject_init_and_add+0x128/0x190
[  302.612157][ T4610]  ? lockdep_softirqs_off+0x430/0x430
[  302.617908][ T4610]  ? kobject_add+0x230/0x230
[  302.622871][ T4610]  ? __init_swait_queue_head+0xa5/0x150
[  302.628447][ T4610]  gfs2_sys_fs_add+0x24f/0x4b0
[  302.633408][ T4610]  ? gfs2_recover_set+0x240/0x240
[  302.638548][ T4610]  ? snprintf+0xe5/0x140
[  302.642888][ T4610]  ? __free_pages+0x95/0x1a0
[  302.647752][ T4610]  ? vscnprintf+0x80/0x80
[  302.652912][ T4610]  gfs2_fill_super+0x120f/0x1f00
[  302.657896][ T4610]  ? gfs2_reconfigure+0xd30/0xd30
[  302.663215][ T4610]  ? sb_set_blocksize+0xa5/0xe0
[  302.668091][ T4610]  get_tree_bdev+0x3f1/0x610
[  302.672699][ T4610]  ? gfs2_reconfigure+0xd30/0xd30
[  302.677819][ T4610]  gfs2_get_tree+0x4d/0x1e0
[  302.682428][ T4610]  vfs_get_tree+0x88/0x270
[  302.686851][ T4610]  do_new_mount+0x24a/0xa40
[  302.691398][ T4610]  __se_sys_mount+0x2e3/0x3d0
[  302.696192][ T4610]  ? __x64_sys_mount+0xc0/0xc0
[  302.701141][ T4610]  ? rcu_is_watching+0x11/0xa0
[  302.706520][ T4610]  ? __x64_sys_mount+0x1c/0xc0
[  302.711555][ T4610]  do_syscall_64+0x4c/0xa0
[  302.716173][ T4610]  ? clear_bhb_loop+0x30/0x80
[  302.720867][ T4610]  ? clear_bhb_loop+0x30/0x80
[  302.725639][ T4610]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  302.731846][ T4610] RIP: 0033:0x7f7aecfc7a8a
[  302.736356][ T4610] 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
[  302.757101][ T4610] RSP: 002b:00007f7aec627e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  302.765800][ T4610] RAX: ffffffffffffffda RBX: 00007f7aec627ee0 RCX: 00007f7aecfc7a8a
[  302.774081][ T4610] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f7aec627ea0
[  302.782597][ T4610] RBP: 00002000000124c0 R08: 00007f7aec627ee0 R09: 0000000000000000
[  302.790663][ T4610] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[  302.799043][ T4610] R13: 00007f7aec627ea0 R14: 0000000000012616 R15: 0000200000000140
[  302.807637][ T4610]  </TASK>
[  302.810829][ T4338] Kernel Offset: disabled
[  302.815364][ T4338] Rebooting in 86400 seconds..