gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  155.314514][ T5569] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  155.397068][ T5569] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  155.444348][ T5586] loop0: detected capacity change from 0 to 32768
[  155.467036][ T5586] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  155.500452][ T5586] CPU: 0 PID: 5586 Comm: syz.0.53 Not tainted syzkaller #0
[  155.507859][ T5586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  155.518391][ T5586] Call Trace:
[  155.521788][ T5586]  <TASK>
[  155.524916][ T5586]  dump_stack_lvl+0x168/0x230
[  155.529732][ T5586]  ? show_regs_print_info+0x20/0x20
[  155.535169][ T5586]  ? load_image+0x3b0/0x3b0
[  155.539828][ T5586]  sysfs_create_dir_ns+0x252/0x280
[  155.545262][ T5586]  ? __lock_acquire+0x7c60/0x7c60
[  155.550425][ T5586]  ? sysfs_warn_dup+0xa0/0xa0
[  155.555614][ T5586]  ? do_raw_spin_unlock+0x11d/0x230
[  155.560952][ T5586]  kobject_add_internal+0x662/0xd00
[  155.566609][ T5586]  kobject_init_and_add+0x122/0x190
[  155.572124][ T5586]  ? lockdep_softirqs_off+0x420/0x420
[  155.577873][ T5586]  ? kobject_add+0x210/0x210
[  155.582533][ T5586]  ? __init_swait_queue_head+0xa5/0x150
[  155.588810][ T5586]  gfs2_sys_fs_add+0x234/0x480
[  155.593889][ T5586]  ? gfs2_recover_set+0x240/0x240
[  155.598965][ T5586]  ? snprintf+0xd7/0x120
[  155.603616][ T5586]  ? __free_pages+0x95/0x1a0
[  155.608354][ T5586]  ? vscnprintf+0x80/0x80
[  155.613010][ T5586]  gfs2_fill_super+0x128d/0x1f50
[  155.618113][ T5586]  ? gfs2_reconfigure+0xcd0/0xcd0
[  155.624121][ T5586]  ? preempt_count_add+0x8d/0x190
[  155.629330][ T5586]  ? sb_set_blocksize+0xa5/0xe0
[  155.634586][ T5586]  get_tree_bdev+0x3f1/0x610
[  155.639496][ T5586]  ? gfs2_reconfigure+0xcd0/0xcd0
[  155.644840][ T5586]  gfs2_get_tree+0x4d/0x1e0
[  155.649570][ T5586]  vfs_get_tree+0x88/0x270
[  155.654123][ T5586]  do_new_mount+0x24a/0xa40
[  155.658683][ T5586]  __se_sys_mount+0x2d6/0x3c0
[  155.663530][ T5586]  ? __x64_sys_mount+0xc0/0xc0
[  155.668636][ T5586]  ? lockdep_hardirqs_on+0x94/0x140
[  155.673977][ T5586]  ? __x64_sys_mount+0x1c/0xc0
[  155.679265][ T5586]  do_syscall_64+0x4c/0xa0
[  155.683949][ T5586]  ? clear_bhb_loop+0x30/0x80
[  155.689144][ T5586]  ? clear_bhb_loop+0x30/0x80
[  155.693960][ T5586]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  155.700333][ T5586] RIP: 0033:0x7f9435efdefa
[  155.704975][ T5586] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  155.726059][ T5586] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  155.735158][ T5586] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  155.743450][ T5586] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  155.751883][ T5586] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  155.760233][ T5586] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  155.769449][ T5586] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  155.779272][ T5586]  </TASK>
[  155.870179][ T5572] syz.4.51 (5572): drop_caches: 2
[  155.978163][ T5586] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  156.048304][ T5586] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  156.643929][ T5586] syz.0.53 (5586): drop_caches: 2
[  156.794764][ T5596] loop2: detected capacity change from 0 to 32768
[  156.876103][ T5596] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  156.918181][ T5596] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  156.979620][ T5596] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  157.258763][ T5596] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  157.367905][ T5596] syz.2.55 (5596): drop_caches: 2
[  157.477858][ T5606] loop4: detected capacity change from 0 to 32768
[  157.543836][ T5606] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  157.558542][ T5605] loop1: detected capacity change from 0 to 32768
[  157.586677][ T5606] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  157.619056][ T5605] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  157.643353][ T5606] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  157.662866][ T5605] CPU: 0 PID: 5605 Comm: syz.1.57 Not tainted syzkaller #0
[  157.671617][ T5605] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  157.682974][ T5605] Call Trace:
[  157.686727][ T5605]  <TASK>
[  157.690021][ T5605]  dump_stack_lvl+0x168/0x230
[  157.695005][ T5605]  ? show_regs_print_info+0x20/0x20
[  157.700535][ T5605]  ? load_image+0x3b0/0x3b0
[  157.705287][ T5605]  sysfs_create_dir_ns+0x252/0x280
[  157.710531][ T5605]  ? __lock_acquire+0x7c60/0x7c60
[  157.715704][ T5605]  ? sysfs_warn_dup+0xa0/0xa0
[  157.721434][ T5605]  ? do_raw_spin_unlock+0x11d/0x230
[  157.727553][ T5605]  kobject_add_internal+0x662/0xd00
[  157.733725][ T5605]  kobject_init_and_add+0x122/0x190
[  157.739757][ T5605]  ? lockdep_softirqs_off+0x420/0x420
[  157.745397][ T5605]  ? kobject_add+0x210/0x210
[  157.750246][ T5605]  ? __init_swait_queue_head+0xa5/0x150
[  157.756781][ T5605]  gfs2_sys_fs_add+0x234/0x480
[  157.761993][ T5605]  ? gfs2_recover_set+0x240/0x240
[  157.767602][ T5605]  ? snprintf+0xd7/0x120
[  157.772681][ T5605]  ? __free_pages+0x95/0x1a0
[  157.777432][ T5605]  ? vscnprintf+0x80/0x80
[  157.781839][ T5605]  gfs2_fill_super+0x128d/0x1f50
[  157.786924][ T5605]  ? gfs2_reconfigure+0xcd0/0xcd0
[  157.792045][ T5605]  ? preempt_count_add+0x8d/0x190
[  157.797495][ T5605]  ? sb_set_blocksize+0xa5/0xe0
[  157.802517][ T5605]  get_tree_bdev+0x3f1/0x610
[  157.807369][ T5605]  ? gfs2_reconfigure+0xcd0/0xcd0
[  157.812709][ T5605]  gfs2_get_tree+0x4d/0x1e0
[  157.817344][ T5605]  vfs_get_tree+0x88/0x270
[  157.821814][ T5605]  do_new_mount+0x24a/0xa40
[  157.826264][ T5610] loop3: detected capacity change from 0 to 32768
[  157.826529][ T5605]  __se_sys_mount+0x2d6/0x3c0
[  157.837959][ T5605]  ? __x64_sys_mount+0xc0/0xc0
[  157.842873][ T5605]  ? lockdep_hardirqs_on+0x94/0x140
[  157.848388][ T5605]  ? __x64_sys_mount+0x1c/0xc0
[  157.853451][ T5605]  do_syscall_64+0x4c/0xa0
[  157.859018][ T5605]  ? clear_bhb_loop+0x30/0x80
[  157.865688][ T5605]  ? clear_bhb_loop+0x30/0x80
[  157.872672][ T5605]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  157.879669][ T5605] RIP: 0033:0x7f049eb23efa
[  157.885707][ T5605] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  157.910568][ T5605] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  157.920732][ T5605] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  157.930368][ T5605] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  157.939057][ T5605] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  157.948513][ T5605] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  157.958413][ T5605] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  157.970748][ T5605]  </TASK>
[  158.036731][ T5610] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  158.072980][ T5610] CPU: 1 PID: 5610 Comm: syz.3.54 Not tainted syzkaller #0
[  158.082018][ T5610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  158.093329][ T5610] Call Trace:
[  158.097053][ T5610]  <TASK>
[  158.100877][ T5610]  dump_stack_lvl+0x168/0x230
[  158.106426][ T5610]  ? show_regs_print_info+0x20/0x20
[  158.112114][ T5610]  ? load_image+0x3b0/0x3b0
[  158.117330][ T5610]  sysfs_create_dir_ns+0x252/0x280
[  158.124106][ T5610]  ? __lock_acquire+0x7c60/0x7c60
[  158.130254][ T5610]  ? sysfs_warn_dup+0xa0/0xa0
[  158.135249][ T5610]  ? do_raw_spin_unlock+0x11d/0x230
[  158.141250][ T5610]  kobject_add_internal+0x662/0xd00
[  158.147024][ T5610]  kobject_init_and_add+0x122/0x190
[  158.152542][ T5610]  ? lockdep_softirqs_off+0x420/0x420
[  158.158746][ T5610]  ? kobject_add+0x210/0x210
[  158.163924][ T5610]  ? __init_swait_queue_head+0xa5/0x150
[  158.170138][ T5610]  gfs2_sys_fs_add+0x234/0x480
[  158.175981][ T5610]  ? gfs2_recover_set+0x240/0x240
[  158.184621][ T5610]  ? snprintf+0xd7/0x120
[  158.191094][ T5610]  ? __free_pages+0x95/0x1a0
[  158.196212][ T5610]  ? vscnprintf+0x80/0x80
[  158.201798][ T5610]  gfs2_fill_super+0x128d/0x1f50
[  158.207890][ T5610]  ? gfs2_reconfigure+0xcd0/0xcd0
[  158.213425][ T5610]  ? preempt_count_add+0x8d/0x190
[  158.218786][ T5610]  ? sb_set_blocksize+0xa5/0xe0
[  158.223972][ T5610]  get_tree_bdev+0x3f1/0x610
[  158.228879][ T5610]  ? gfs2_reconfigure+0xcd0/0xcd0
[  158.234202][ T5610]  gfs2_get_tree+0x4d/0x1e0
[  158.238881][ T5610]  vfs_get_tree+0x88/0x270
[  158.243606][ T5610]  do_new_mount+0x24a/0xa40
[  158.248343][ T5610]  __se_sys_mount+0x2d6/0x3c0
[  158.253254][ T5610]  ? __x64_sys_mount+0xc0/0xc0
[  158.258441][ T5610]  ? lockdep_hardirqs_on+0x94/0x140
[  158.263772][ T5610]  ? __x64_sys_mount+0x1c/0xc0
[  158.268690][ T5610]  do_syscall_64+0x4c/0xa0
[  158.273437][ T5610]  ? clear_bhb_loop+0x30/0x80
[  158.278199][ T5610]  ? clear_bhb_loop+0x30/0x80
[  158.282923][ T5610]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  158.289252][ T5610] RIP: 0033:0x7fa866a5befa
[  158.294408][ T5610] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  158.314807][ T5610] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  158.323554][ T5610] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  158.332102][ T5610] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  158.341788][ T5610] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  158.353036][ T5610] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  158.362162][ T5610] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  158.371244][ T5610]  </TASK>
[  158.475643][ T5606] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  158.523296][ T5606] syz.4.56 (5606): drop_caches: 2
[  158.698086][ T5605] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  158.753499][ T5605] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  159.030046][ T5620] loop0: detected capacity change from 0 to 32768
[  159.079216][ T5620] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  159.116335][ T5620] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
2025/11/20 09:00:19 executed programs: 56
[  159.183889][ T5620] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  159.414215][ T5620] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  159.457689][ T5620] syz.0.58 (5620): drop_caches: 2
[  159.480168][ T5610] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  159.527509][ T5610] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  159.535537][ T5627] loop2: detected capacity change from 0 to 32768
[  159.599481][ T5627] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  159.607824][ T5627] CPU: 0 PID: 5627 Comm: syz.2.59 Not tainted syzkaller #0
[  159.615370][ T5627] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  159.626191][ T5627] Call Trace:
[  159.630426][ T5627]  <TASK>
[  159.633673][ T5627]  dump_stack_lvl+0x168/0x230
[  159.638429][ T5627]  ? show_regs_print_info+0x20/0x20
[  159.643965][ T5627]  ? load_image+0x3b0/0x3b0
[  159.648622][ T5627]  sysfs_create_dir_ns+0x252/0x280
[  159.654824][ T5627]  ? __lock_acquire+0x7c60/0x7c60
[  159.660697][ T5627]  ? sysfs_warn_dup+0xa0/0xa0
[  159.666628][ T5627]  ? do_raw_spin_unlock+0x11d/0x230
[  159.673538][ T5627]  kobject_add_internal+0x662/0xd00
[  159.679162][ T5627]  kobject_init_and_add+0x122/0x190
[  159.684883][ T5627]  ? lockdep_softirqs_off+0x420/0x420
[  159.690919][ T5627]  ? kobject_add+0x210/0x210
[  159.695958][ T5627]  ? __init_swait_queue_head+0xa5/0x150
[  159.701849][ T5627]  gfs2_sys_fs_add+0x234/0x480
[  159.706839][ T5627]  ? gfs2_recover_set+0x240/0x240
[  159.712759][ T5627]  ? snprintf+0xd7/0x120
[  159.717212][ T5627]  ? __free_pages+0x95/0x1a0
[  159.722111][ T5627]  ? vscnprintf+0x80/0x80
[  159.726961][ T5627]  gfs2_fill_super+0x128d/0x1f50
[  159.732138][ T5627]  ? gfs2_reconfigure+0xcd0/0xcd0
[  159.737538][ T5627]  ? preempt_count_add+0x8d/0x190
[  159.742730][ T5627]  ? sb_set_blocksize+0xa5/0xe0
[  159.747646][ T5627]  get_tree_bdev+0x3f1/0x610
[  159.753279][ T5627]  ? gfs2_reconfigure+0xcd0/0xcd0
[  159.758783][ T5627]  gfs2_get_tree+0x4d/0x1e0
[  159.763428][ T5627]  vfs_get_tree+0x88/0x270
[  159.768104][ T5627]  do_new_mount+0x24a/0xa40
[  159.772753][ T5627]  __se_sys_mount+0x2d6/0x3c0
[  159.777611][ T5627]  ? __x64_sys_mount+0xc0/0xc0
[  159.782763][ T5627]  ? lockdep_hardirqs_on+0x94/0x140
[  159.788688][ T5627]  ? __x64_sys_mount+0x1c/0xc0
[  159.794027][ T5627]  do_syscall_64+0x4c/0xa0
[  159.799618][ T5627]  ? clear_bhb_loop+0x30/0x80
[  159.805083][ T5627]  ? clear_bhb_loop+0x30/0x80
[  159.810089][ T5627]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  159.816384][ T5627] RIP: 0033:0x7f693264eefa
[  159.820941][ T5627] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  159.840963][ T5627] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  159.849849][ T5627] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  159.858765][ T5627] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  159.867954][ T5627] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  159.876547][ T5627] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  159.886603][ T5627] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  159.896002][ T5627]  </TASK>
[  159.909809][ T5627] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  159.977919][ T5627] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  160.516233][ T5627] syz.2.59 (5627): drop_caches: 2
[  160.604715][ T5638] loop4: detected capacity change from 0 to 32768
[  160.650643][ T5638] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  160.699696][ T5638] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  160.771263][ T5638] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  161.027412][ T5638] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  161.085393][ T5651] loop1: detected capacity change from 0 to 32768
[  161.117717][ T5638] syz.4.60 (5638): drop_caches: 2
[  161.192041][ T5651] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  161.221530][ T5651] CPU: 0 PID: 5651 Comm: syz.1.61 Not tainted syzkaller #0
[  161.229772][ T5651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  161.240204][ T5651] Call Trace:
[  161.243787][ T5651]  <TASK>
[  161.247093][ T5651]  dump_stack_lvl+0x168/0x230
[  161.252011][ T5651]  ? show_regs_print_info+0x20/0x20
[  161.257632][ T5651]  ? load_image+0x3b0/0x3b0
[  161.262549][ T5651]  sysfs_create_dir_ns+0x252/0x280
[  161.267887][ T5651]  ? __lock_acquire+0x7c60/0x7c60
[  161.273673][ T5651]  ? sysfs_warn_dup+0xa0/0xa0
[  161.278593][ T5651]  ? do_raw_spin_unlock+0x11d/0x230
[  161.284026][ T5651]  kobject_add_internal+0x662/0xd00
[  161.289468][ T5651]  kobject_init_and_add+0x122/0x190
[  161.294848][ T5651]  ? lockdep_softirqs_off+0x420/0x420
[  161.300267][ T5651]  ? kobject_add+0x210/0x210
[  161.305018][ T5651]  ? __init_swait_queue_head+0xa5/0x150
[  161.310788][ T5651]  gfs2_sys_fs_add+0x234/0x480
[  161.315703][ T5651]  ? gfs2_recover_set+0x240/0x240
[  161.320893][ T5651]  ? snprintf+0xd7/0x120
[  161.325188][ T5651]  ? __free_pages+0x95/0x1a0
[  161.330053][ T5651]  ? vscnprintf+0x80/0x80
[  161.334666][ T5651]  gfs2_fill_super+0x128d/0x1f50
[  161.339946][ T5651]  ? gfs2_reconfigure+0xcd0/0xcd0
[  161.345215][ T5651]  ? preempt_count_add+0x8d/0x190
[  161.350324][ T5651]  ? sb_set_blocksize+0xa5/0xe0
[  161.355404][ T5651]  get_tree_bdev+0x3f1/0x610
[  161.360230][ T5651]  ? gfs2_reconfigure+0xcd0/0xcd0
[  161.365782][ T5651]  gfs2_get_tree+0x4d/0x1e0
[  161.370702][ T5651]  vfs_get_tree+0x88/0x270
[  161.375156][ T5651]  do_new_mount+0x24a/0xa40
[  161.379710][ T5651]  __se_sys_mount+0x2d6/0x3c0
[  161.384723][ T5651]  ? __x64_sys_mount+0xc0/0xc0
[  161.389629][ T5651]  ? lockdep_hardirqs_on+0x94/0x140
[  161.395043][ T5651]  ? __x64_sys_mount+0x1c/0xc0
[  161.399947][ T5651]  do_syscall_64+0x4c/0xa0
[  161.404515][ T5651]  ? clear_bhb_loop+0x30/0x80
[  161.409730][ T5651]  ? clear_bhb_loop+0x30/0x80
[  161.418559][ T5651]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  161.424678][ T5651] RIP: 0033:0x7f049eb23efa
[  161.429166][ T5651] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  161.449414][ T5651] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  161.458064][ T5651] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  161.466693][ T5651] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  161.475533][ T5651] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  161.484111][ T5651] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  161.492699][ T5651] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  161.501451][ T5651]  </TASK>
[  161.974936][ T5658] loop0: detected capacity change from 0 to 32768
[  162.007008][ T5660] loop3: detected capacity change from 0 to 32768
[  162.029104][ T5658] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  162.068089][ T5658] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  162.115213][ T5658] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  162.123456][ T5660] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  162.177690][ T5660] CPU: 1 PID: 5660 Comm: syz.3.63 Not tainted syzkaller #0
[  162.185749][ T5660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  162.196856][ T5660] Call Trace:
[  162.200516][ T5660]  <TASK>
[  162.204000][ T5660]  dump_stack_lvl+0x168/0x230
[  162.209306][ T5660]  ? show_regs_print_info+0x20/0x20
[  162.215006][ T5660]  ? load_image+0x3b0/0x3b0
[  162.219764][ T5660]  sysfs_create_dir_ns+0x252/0x280
[  162.226276][ T5660]  ? __lock_acquire+0x7c60/0x7c60
[  162.231752][ T5660]  ? sysfs_warn_dup+0xa0/0xa0
[  162.236829][ T5660]  ? do_raw_spin_unlock+0x11d/0x230
[  162.242400][ T5660]  kobject_add_internal+0x662/0xd00
[  162.248000][ T5660]  kobject_init_and_add+0x122/0x190
[  162.253529][ T5660]  ? lockdep_softirqs_off+0x420/0x420
[  162.259610][ T5660]  ? kobject_add+0x210/0x210
[  162.264593][ T5660]  ? __init_swait_queue_head+0xa5/0x150
[  162.270866][ T5660]  gfs2_sys_fs_add+0x234/0x480
[  162.276977][ T5660]  ? gfs2_recover_set+0x240/0x240
[  162.284068][ T5660]  ? snprintf+0xd7/0x120
[  162.288688][ T5660]  ? __free_pages+0x95/0x1a0
[  162.293427][ T5660]  ? vscnprintf+0x80/0x80
[  162.298505][ T5660]  gfs2_fill_super+0x128d/0x1f50
[  162.304652][ T5660]  ? gfs2_reconfigure+0xcd0/0xcd0
[  162.310195][ T5660]  ? preempt_count_add+0x8d/0x190
[  162.315389][ T5660]  ? sb_set_blocksize+0xa5/0xe0
[  162.320582][ T5660]  get_tree_bdev+0x3f1/0x610
[  162.325412][ T5660]  ? gfs2_reconfigure+0xcd0/0xcd0
[  162.330485][ T5660]  gfs2_get_tree+0x4d/0x1e0
[  162.335041][ T5660]  vfs_get_tree+0x88/0x270
[  162.339521][ T5660]  do_new_mount+0x24a/0xa40
[  162.344170][ T5660]  __se_sys_mount+0x2d6/0x3c0
[  162.349227][ T5660]  ? __x64_sys_mount+0xc0/0xc0
[  162.354456][ T5660]  ? lockdep_hardirqs_on+0x94/0x140
[  162.360149][ T5660]  ? __x64_sys_mount+0x1c/0xc0
[  162.364978][ T5660]  do_syscall_64+0x4c/0xa0
[  162.369607][ T5660]  ? clear_bhb_loop+0x30/0x80
[  162.375024][ T5660]  ? clear_bhb_loop+0x30/0x80
[  162.379753][ T5660]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  162.386083][ T5660] RIP: 0033:0x7fa866a5befa
[  162.390669][ T5660] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  162.413896][ T5660] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  162.423967][ T5660] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  162.433205][ T5660] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  162.441990][ T5660] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  162.450861][ T5660] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  162.459400][ T5660] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  162.467971][ T5660]  </TASK>
[  162.538022][ T5658] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  162.548521][ T5665] loop2: detected capacity change from 0 to 32768
[  162.617297][ T5665] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  162.674976][ T5658] syz.0.62 (5658): drop_caches: 2
[  162.687986][ T5665] CPU: 0 PID: 5665 Comm: syz.2.64 Not tainted syzkaller #0
[  162.695720][ T5665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  162.707136][ T5665] Call Trace:
[  162.710872][ T5665]  <TASK>
[  162.714641][ T5665]  dump_stack_lvl+0x168/0x230
[  162.719654][ T5665]  ? show_regs_print_info+0x20/0x20
[  162.725212][ T5665]  ? load_image+0x3b0/0x3b0
[  162.731246][ T5665]  sysfs_create_dir_ns+0x252/0x280
[  162.737297][ T5665]  ? __lock_acquire+0x7c60/0x7c60
[  162.743364][ T5665]  ? sysfs_warn_dup+0xa0/0xa0
[  162.748659][ T5665]  ? do_raw_spin_unlock+0x11d/0x230
[  162.754105][ T5665]  kobject_add_internal+0x662/0xd00
[  162.759605][ T5665]  kobject_init_and_add+0x122/0x190
[  162.764872][ T5665]  ? lockdep_softirqs_off+0x420/0x420
[  162.770844][ T5665]  ? kobject_add+0x210/0x210
[  162.775748][ T5665]  ? __init_swait_queue_head+0xa5/0x150
[  162.781878][ T5665]  gfs2_sys_fs_add+0x234/0x480
[  162.787675][ T5665]  ? gfs2_recover_set+0x240/0x240
[  162.793107][ T5665]  ? snprintf+0xd7/0x120
[  162.798096][ T5665]  ? __free_pages+0x95/0x1a0
[  162.802757][ T5665]  ? vscnprintf+0x80/0x80
[  162.807651][ T5665]  gfs2_fill_super+0x128d/0x1f50
[  162.812749][ T5665]  ? gfs2_reconfigure+0xcd0/0xcd0
[  162.817995][ T5665]  ? preempt_count_add+0x8d/0x190
[  162.823204][ T5665]  ? sb_set_blocksize+0xa5/0xe0
[  162.828781][ T5665]  get_tree_bdev+0x3f1/0x610
[  162.833778][ T5665]  ? gfs2_reconfigure+0xcd0/0xcd0
[  162.839033][ T5665]  gfs2_get_tree+0x4d/0x1e0
[  162.843777][ T5665]  vfs_get_tree+0x88/0x270
[  162.848324][ T5665]  do_new_mount+0x24a/0xa40
[  162.852876][ T5665]  __se_sys_mount+0x2d6/0x3c0
[  162.858070][ T5665]  ? __x64_sys_mount+0xc0/0xc0
[  162.863197][ T5665]  ? lockdep_hardirqs_on+0x94/0x140
[  162.868716][ T5665]  ? __x64_sys_mount+0x1c/0xc0
[  162.873526][ T5665]  do_syscall_64+0x4c/0xa0
[  162.878083][ T5665]  ? clear_bhb_loop+0x30/0x80
[  162.882880][ T5665]  ? clear_bhb_loop+0x30/0x80
[  162.887615][ T5665]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  162.893554][ T5665] RIP: 0033:0x7f693264eefa
[  162.898020][ T5665] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  162.918742][ T5665] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  162.927214][ T5665] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  162.935234][ T5665] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  162.943509][ T5665] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  162.951608][ T5665] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  162.960733][ T5665] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  162.968955][ T5665]  </TASK>
[  162.994155][ T5651] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  163.027988][ T5651] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  163.117997][ T5660] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  163.183060][ T5660] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  163.202950][ T5665] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  163.230869][ T5675] loop4: detected capacity change from 0 to 32768
[  163.249203][ T5665] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  163.290225][ T5675] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  163.330527][ T5675] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  163.448984][ T5675] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  163.758476][ T5675] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  163.812933][ T5675] syz.4.65 (5675): drop_caches: 2
[  164.967601][ T5694] loop1: detected capacity change from 0 to 32768
[  165.097586][ T5694] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  165.113626][ T5700] loop3: detected capacity change from 0 to 32768
[  165.135255][ T5694] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  165.165036][ T5698] loop0: detected capacity change from 0 to 32768
[  165.167626][ T5694] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  165.235730][ T5700] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  165.264041][ T5698] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  165.275438][ T5700] CPU: 0 PID: 5700 Comm: syz.3.68 Not tainted syzkaller #0
[  165.283099][ T5700] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  165.293536][ T5700] Call Trace:
[  165.296846][ T5700]  <TASK>
[  165.299908][ T5700]  dump_stack_lvl+0x168/0x230
[  165.304632][ T5700]  ? show_regs_print_info+0x20/0x20
[  165.310043][ T5700]  ? load_image+0x3b0/0x3b0
[  165.314790][ T5700]  sysfs_create_dir_ns+0x252/0x280
[  165.320033][ T5700]  ? __lock_acquire+0x7c60/0x7c60
[  165.325098][ T5700]  ? sysfs_warn_dup+0xa0/0xa0
[  165.330249][ T5700]  ? do_raw_spin_unlock+0x11d/0x230
[  165.335489][ T5700]  kobject_add_internal+0x662/0xd00
[  165.340759][ T5700]  kobject_init_and_add+0x122/0x190
[  165.346447][ T5700]  ? lockdep_softirqs_off+0x420/0x420
[  165.351884][ T5700]  ? kobject_add+0x210/0x210
[  165.356694][ T5700]  ? __init_swait_queue_head+0xa5/0x150
[  165.362308][ T5700]  gfs2_sys_fs_add+0x234/0x480
[  165.367130][ T5700]  ? gfs2_recover_set+0x240/0x240
[  165.372400][ T5700]  ? snprintf+0xd7/0x120
[  165.376778][ T5700]  ? __free_pages+0x95/0x1a0
[  165.381533][ T5700]  ? vscnprintf+0x80/0x80
[  165.385935][ T5700]  gfs2_fill_super+0x128d/0x1f50
[  165.390951][ T5700]  ? gfs2_reconfigure+0xcd0/0xcd0
[  165.396016][ T5700]  ? preempt_count_add+0x8d/0x190
[  165.401167][ T5700]  ? sb_set_blocksize+0xa5/0xe0
[  165.406156][ T5700]  get_tree_bdev+0x3f1/0x610
[  165.410804][ T5700]  ? gfs2_reconfigure+0xcd0/0xcd0
[  165.415882][ T5700]  gfs2_get_tree+0x4d/0x1e0
[  165.420424][ T5700]  vfs_get_tree+0x88/0x270
[  165.424879][ T5700]  do_new_mount+0x24a/0xa40
[  165.429826][ T5700]  __se_sys_mount+0x2d6/0x3c0
[  165.434707][ T5700]  ? __x64_sys_mount+0xc0/0xc0
[  165.439619][ T5700]  ? lockdep_hardirqs_on+0x94/0x140
[  165.445146][ T5700]  ? __x64_sys_mount+0x1c/0xc0
[  165.450054][ T5700]  do_syscall_64+0x4c/0xa0
[  165.454625][ T5700]  ? clear_bhb_loop+0x30/0x80
[  165.459514][ T5700]  ? clear_bhb_loop+0x30/0x80
[  165.464600][ T5700]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  165.468536][ T5702] loop2: detected capacity change from 0 to 32768
[  165.470852][ T5700] RIP: 0033:0x7fa866a5befa
[  165.482077][ T5700] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  165.502691][ T5700] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  165.511157][ T5700] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  165.519776][ T5700] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  165.528085][ T5700] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  165.536229][ T5702] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  165.536520][ T5700] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  165.552941][ T5700] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  165.561066][ T5700]  </TASK>
[  165.565044][ T5702] CPU: 0 PID: 5702 Comm: syz.2.69 Not tainted syzkaller #0
[  165.572483][ T5702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  165.582851][ T5702] Call Trace:
[  165.586344][ T5702]  <TASK>
[  165.589322][ T5702]  dump_stack_lvl+0x168/0x230
[  165.594084][ T5702]  ? show_regs_print_info+0x20/0x20
[  165.599712][ T5702]  ? load_image+0x3b0/0x3b0
[  165.604384][ T5702]  sysfs_create_dir_ns+0x252/0x280
[  165.609546][ T5702]  ? __lock_acquire+0x7c60/0x7c60
[  165.614707][ T5702]  ? sysfs_warn_dup+0xa0/0xa0
[  165.620269][ T5702]  ? do_raw_spin_unlock+0x11d/0x230
[  165.625532][ T5702]  kobject_add_internal+0x662/0xd00
[  165.630960][ T5702]  kobject_init_and_add+0x122/0x190
[  165.634116][ T5706] loop4: detected capacity change from 0 to 32768
[  165.636503][ T5702]  ? lockdep_softirqs_off+0x420/0x420
[  165.649079][ T5702]  ? kobject_add+0x210/0x210
[  165.653978][ T5702]  ? __init_swait_queue_head+0xa5/0x150
[  165.659656][ T5702]  gfs2_sys_fs_add+0x234/0x480
[  165.664735][ T5702]  ? gfs2_recover_set+0x240/0x240
[  165.670062][ T5702]  ? snprintf+0xd7/0x120
[  165.675230][ T5702]  ? __free_pages+0x95/0x1a0
[  165.680009][ T5702]  ? vscnprintf+0x80/0x80
[  165.684789][ T5702]  gfs2_fill_super+0x128d/0x1f50
[  165.690015][ T5702]  ? gfs2_reconfigure+0xcd0/0xcd0
[  165.695283][ T5702]  ? preempt_count_add+0x8d/0x190
[  165.700615][ T5702]  ? sb_set_blocksize+0xa5/0xe0
[  165.705875][ T5702]  get_tree_bdev+0x3f1/0x610
[  165.710530][ T5702]  ? gfs2_reconfigure+0xcd0/0xcd0
[  165.715692][ T5702]  gfs2_get_tree+0x4d/0x1e0
[  165.720249][ T5702]  vfs_get_tree+0x88/0x270
[  165.724812][ T5702]  do_new_mount+0x24a/0xa40
[  165.729595][ T5702]  __se_sys_mount+0x2d6/0x3c0
[  165.734354][ T5702]  ? __x64_sys_mount+0xc0/0xc0
[  165.739377][ T5702]  ? lockdep_hardirqs_on+0x94/0x140
[  165.740908][ T5706] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  165.744994][ T5702]  ? __x64_sys_mount+0x1c/0xc0
[  165.758283][ T5702]  do_syscall_64+0x4c/0xa0
[  165.762823][ T5702]  ? clear_bhb_loop+0x30/0x80
[  165.767571][ T5702]  ? clear_bhb_loop+0x30/0x80
[  165.772382][ T5702]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  165.778685][ T5702] RIP: 0033:0x7f693264eefa
[  165.783313][ T5702] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  165.803649][ T5702] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  165.812202][ T5702] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  165.820385][ T5702] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  165.828713][ T5702] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  165.836737][ T5702] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  165.844947][ T5702] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  165.852973][ T5702]  </TASK>
[  165.856106][ T5706] CPU: 1 PID: 5706 Comm: syz.4.70 Not tainted syzkaller #0
[  165.863620][ T5706] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  165.873975][ T5706] Call Trace:
[  165.877470][ T5706]  <TASK>
[  165.880445][ T5706]  dump_stack_lvl+0x168/0x230
[  165.885273][ T5706]  ? show_regs_print_info+0x20/0x20
[  165.891151][ T5706]  ? load_image+0x3b0/0x3b0
[  165.895986][ T5706]  sysfs_create_dir_ns+0x252/0x280
[  165.901325][ T5706]  ? __lock_acquire+0x7c60/0x7c60
[  165.906942][ T5706]  ? sysfs_warn_dup+0xa0/0xa0
[  165.911887][ T5706]  ? do_raw_spin_unlock+0x11d/0x230
[  165.917501][ T5706]  kobject_add_internal+0x662/0xd00
[  165.923223][ T5706]  kobject_init_and_add+0x122/0x190
[  165.928932][ T5706]  ? lockdep_softirqs_off+0x420/0x420
[  165.934375][ T5706]  ? kobject_add+0x210/0x210
[  165.939012][ T5706]  ? __init_swait_queue_head+0xa5/0x150
[  165.944617][ T5706]  gfs2_sys_fs_add+0x234/0x480
[  165.949437][ T5706]  ? gfs2_recover_set+0x240/0x240
[  165.954499][ T5706]  ? snprintf+0xd7/0x120
[  165.958786][ T5706]  ? __free_pages+0x95/0x1a0
[  165.963399][ T5706]  ? vscnprintf+0x80/0x80
[  165.968029][ T5706]  gfs2_fill_super+0x128d/0x1f50
[  165.973114][ T5706]  ? gfs2_reconfigure+0xcd0/0xcd0
[  165.978406][ T5706]  ? preempt_count_add+0x8d/0x190
[  165.983856][ T5706]  ? sb_set_blocksize+0xa5/0xe0
[  165.988967][ T5706]  get_tree_bdev+0x3f1/0x610
[  165.993794][ T5706]  ? gfs2_reconfigure+0xcd0/0xcd0
[  165.998964][ T5706]  gfs2_get_tree+0x4d/0x1e0
[  166.003693][ T5706]  vfs_get_tree+0x88/0x270
[  166.008173][ T5706]  do_new_mount+0x24a/0xa40
[  166.013472][ T5706]  __se_sys_mount+0x2d6/0x3c0
[  166.018198][ T5706]  ? __x64_sys_mount+0xc0/0xc0
[  166.023116][ T5694] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  166.023104][ T5706]  ? lockdep_hardirqs_on+0x94/0x140
[  166.023135][ T5706]  ? __x64_sys_mount+0x1c/0xc0
[  166.041497][ T5706]  do_syscall_64+0x4c/0xa0
[  166.046183][ T5706]  ? clear_bhb_loop+0x30/0x80
[  166.050999][ T5706]  ? clear_bhb_loop+0x30/0x80
[  166.055823][ T5706]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  166.061757][ T5706] RIP: 0033:0x7f7b6e11defa
[  166.066433][ T5706] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  166.086617][ T5706] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  166.095297][ T5706] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  166.103871][ T5706] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  166.112160][ T5706] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  166.120357][ T5706] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  166.126558][ T5694] syz.1.67 (5694): drop_caches: 2
[  166.128362][ T5706] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  166.128397][ T5706]  </TASK>
[  166.158409][ T5698] CPU: 0 PID: 5698 Comm: syz.0.66 Not tainted syzkaller #0
[  166.165828][ T5698] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  166.176310][ T5698] Call Trace:
[  166.180120][ T5698]  <TASK>
[  166.183080][ T5698]  dump_stack_lvl+0x168/0x230
[  166.187897][ T5698]  ? show_regs_print_info+0x20/0x20
[  166.188072][ T5700] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  166.194086][ T5698]  ? load_image+0x3b0/0x3b0
[  166.194135][ T5698]  sysfs_create_dir_ns+0x252/0x280
[  166.218040][ T5698]  ? __lock_acquire+0x7c60/0x7c60
[  166.219600][ T5700] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  166.223104][ T5698]  ? sysfs_warn_dup+0xa0/0xa0
[  166.234903][ T5698]  ? do_raw_spin_unlock+0x11d/0x230
[  166.240139][ T5698]  kobject_add_internal+0x662/0xd00
[  166.245363][ T5698]  kobject_init_and_add+0x122/0x190
[  166.250683][ T5698]  ? lockdep_softirqs_off+0x420/0x420
[  166.256083][ T5698]  ? kobject_add+0x210/0x210
[  166.260692][ T5698]  ? __init_swait_queue_head+0xa5/0x150
[  166.266355][ T5698]  gfs2_sys_fs_add+0x234/0x480
[  166.271128][ T5698]  ? gfs2_recover_set+0x240/0x240
[  166.276162][ T5698]  ? snprintf+0xd7/0x120
[  166.280436][ T5698]  ? __free_pages+0x95/0x1a0
[  166.285525][ T5698]  ? vscnprintf+0x80/0x80
[  166.290064][ T5698]  gfs2_fill_super+0x128d/0x1f50
[  166.295026][ T5698]  ? gfs2_reconfigure+0xcd0/0xcd0
[  166.300092][ T5698]  ? preempt_count_add+0x8d/0x190
[  166.305355][ T5698]  ? sb_set_blocksize+0xa5/0xe0
[  166.310256][ T5698]  get_tree_bdev+0x3f1/0x610
[  166.315196][ T5698]  ? gfs2_reconfigure+0xcd0/0xcd0
[  166.320439][ T5698]  gfs2_get_tree+0x4d/0x1e0
[  166.325236][ T5698]  vfs_get_tree+0x88/0x270
[  166.329898][ T5698]  do_new_mount+0x24a/0xa40
[  166.334905][ T5698]  __se_sys_mount+0x2d6/0x3c0
[  166.339809][ T5698]  ? __x64_sys_mount+0xc0/0xc0
[  166.344643][ T5698]  ? lockdep_hardirqs_on+0x94/0x140
[  166.349858][ T5698]  ? __x64_sys_mount+0x1c/0xc0
[  166.354756][ T5698]  do_syscall_64+0x4c/0xa0
[  166.359279][ T5698]  ? clear_bhb_loop+0x30/0x80
[  166.364206][ T5698]  ? clear_bhb_loop+0x30/0x80
[  166.368991][ T5698]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  166.374910][ T5698] RIP: 0033:0x7f9435efdefa
[  166.379442][ T5698] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  166.399272][ T5698] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  166.408005][ T5698] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  166.416317][ T5698] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  166.424482][ T5698] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  166.432782][ T5698] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  166.441133][ T5698] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  166.449421][ T5698]  </TASK>
[  166.455058][ T5706] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  166.480121][ T5706] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
2025/11/20 09:00:26 executed programs: 66
[  166.484717][ T5702] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  166.496829][ T5698] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  166.510111][ T5702] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  166.533582][ T5698] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  168.300258][ T5734] loop1: detected capacity change from 0 to 32768
[  168.335554][ T5734] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  168.412797][ T5734] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  168.478311][ T5734] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  168.489145][ T5741] loop2: detected capacity change from 0 to 32768
[  168.595128][ T5739] loop0: detected capacity change from 0 to 32768
[  168.647409][ T5741] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  168.668122][ T5741] CPU: 0 PID: 5741 Comm: syz.2.73 Not tainted syzkaller #0
[  168.676121][ T5741] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  168.688092][ T5741] Call Trace:
[  168.693563][ T5741]  <TASK>
[  168.697665][ T5741]  dump_stack_lvl+0x168/0x230
[  168.703097][ T5741]  ? show_regs_print_info+0x20/0x20
[  168.709232][ T5741]  ? load_image+0x3b0/0x3b0
[  168.714783][ T5741]  sysfs_create_dir_ns+0x252/0x280
[  168.720948][ T5741]  ? __lock_acquire+0x7c60/0x7c60
[  168.726746][ T5741]  ? sysfs_warn_dup+0xa0/0xa0
[  168.732382][ T5741]  ? do_raw_spin_unlock+0x11d/0x230
[  168.739055][ T5741]  kobject_add_internal+0x662/0xd00
[  168.746977][ T5741]  kobject_init_and_add+0x122/0x190
[  168.753787][ T5741]  ? lockdep_softirqs_off+0x420/0x420
[  168.762628][ T5741]  ? kobject_add+0x210/0x210
[  168.769650][ T5741]  ? __init_swait_queue_head+0xa5/0x150
[  168.777062][ T5741]  gfs2_sys_fs_add+0x234/0x480
[  168.781616][ T5745] loop3: detected capacity change from 0 to 32768
[  168.784705][ T5741]  ? gfs2_recover_set+0x240/0x240
[  168.801831][ T5741]  ? snprintf+0xd7/0x120
[  168.806747][ T5741]  ? __free_pages+0x95/0x1a0
[  168.812038][ T5741]  ? vscnprintf+0x80/0x80
[  168.817434][ T5741]  gfs2_fill_super+0x128d/0x1f50
[  168.821190][ T5747] loop4: detected capacity change from 0 to 32768
[  168.823715][ T5741]  ? gfs2_reconfigure+0xcd0/0xcd0
[  168.836538][ T5741]  ? preempt_count_add+0x8d/0x190
[  168.841847][ T5741]  ? sb_set_blocksize+0xa5/0xe0
[  168.847951][ T5741]  get_tree_bdev+0x3f1/0x610
[  168.855615][ T5741]  ? gfs2_reconfigure+0xcd0/0xcd0
[  168.863615][ T5741]  gfs2_get_tree+0x4d/0x1e0
[  168.871291][ T5741]  vfs_get_tree+0x88/0x270
[  168.876579][ T5741]  do_new_mount+0x24a/0xa40
[  168.882688][ T5741]  __se_sys_mount+0x2d6/0x3c0
[  168.890115][ T5741]  ? __x64_sys_mount+0xc0/0xc0
[  168.897141][ T5741]  ? lockdep_hardirqs_on+0x94/0x140
[  168.907341][ T5741]  ? __x64_sys_mount+0x1c/0xc0
[  168.914834][ T5741]  do_syscall_64+0x4c/0xa0
[  168.920411][ T5741]  ? clear_bhb_loop+0x30/0x80
[  168.927936][ T5741]  ? clear_bhb_loop+0x30/0x80
[  168.935421][ T5741]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  168.944428][ T5741] RIP: 0033:0x7f693264eefa
[  168.951429][ T5741] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  168.978620][ T5741] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  168.979089][ T5734] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  168.989536][ T5741] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  168.989563][ T5741] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  168.989603][ T5741] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  168.989617][ T5741] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  168.989631][ T5741] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  168.989661][ T5741]  </TASK>
[  169.064092][ T5739] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  169.068047][ T5741] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  169.082260][ T5739] CPU: 0 PID: 5739 Comm: syz.0.72 Not tainted syzkaller #0
[  169.101264][ T5739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  169.113585][ T5739] Call Trace:
[  169.117277][ T5739]  <TASK>
[  169.121845][ T5739]  dump_stack_lvl+0x168/0x230
[  169.126843][ T5739]  ? show_regs_print_info+0x20/0x20
[  169.132925][ T5739]  ? load_image+0x3b0/0x3b0
[  169.138655][ T5739]  sysfs_create_dir_ns+0x252/0x280
[  169.144078][ T5739]  ? __lock_acquire+0x7c60/0x7c60
[  169.149719][ T5739]  ? sysfs_warn_dup+0xa0/0xa0
[  169.154747][ T5739]  ? do_raw_spin_unlock+0x11d/0x230
[  169.160442][ T5739]  kobject_add_internal+0x662/0xd00
[  169.167083][ T5739]  kobject_init_and_add+0x122/0x190
[  169.176747][ T5739]  ? lockdep_softirqs_off+0x420/0x420
[  169.183019][ T5739]  ? kobject_add+0x210/0x210
[  169.184396][ T5741] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  169.188836][ T5739]  ? __init_swait_queue_head+0xa5/0x150
[  169.188889][ T5739]  gfs2_sys_fs_add+0x234/0x480
[  169.188916][ T5739]  ? gfs2_recover_set+0x240/0x240
[  169.188936][ T5739]  ? snprintf+0xd7/0x120
[  169.188958][ T5739]  ? __free_pages+0x95/0x1a0
[  169.188985][ T5739]  ? vscnprintf+0x80/0x80
[  169.189019][ T5739]  gfs2_fill_super+0x128d/0x1f50
[  169.243825][ T5739]  ? gfs2_reconfigure+0xcd0/0xcd0
[  169.249618][ T5739]  ? preempt_count_add+0x8d/0x190
[  169.255389][ T5739]  ? sb_set_blocksize+0xa5/0xe0
[  169.261740][ T5739]  get_tree_bdev+0x3f1/0x610
[  169.266888][ T5739]  ? gfs2_reconfigure+0xcd0/0xcd0
[  169.272937][ T5739]  gfs2_get_tree+0x4d/0x1e0
[  169.278745][ T5739]  vfs_get_tree+0x88/0x270
[  169.283541][ T5739]  do_new_mount+0x24a/0xa40
[  169.289167][ T5739]  __se_sys_mount+0x2d6/0x3c0
[  169.295616][ T5739]  ? __x64_sys_mount+0xc0/0xc0
[  169.301742][ T5739]  ? lockdep_hardirqs_on+0x94/0x140
[  169.308018][ T5739]  ? __x64_sys_mount+0x1c/0xc0
[  169.313288][ T5739]  do_syscall_64+0x4c/0xa0
[  169.318957][ T5739]  ? clear_bhb_loop+0x30/0x80
[  169.325388][ T5739]  ? clear_bhb_loop+0x30/0x80
[  169.330365][ T5739]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  169.336758][ T5739] RIP: 0033:0x7f9435efdefa
[  169.341483][ T5739] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  169.362533][ T5739] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  169.371898][ T5739] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  169.380658][ T5739] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  169.389025][ T5739] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  169.399811][ T5739] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  169.409862][ T5739] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  169.419603][ T5739]  </TASK>
[  169.442836][ T5734] syz.1.71 (5734): drop_caches: 2
[  169.444413][ T5747] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  169.456376][ T5739] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  169.486748][ T5747] CPU: 1 PID: 5747 Comm: syz.4.75 Not tainted syzkaller #0
[  169.497465][ T5747] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  169.508176][ T5747] Call Trace:
[  169.511574][ T5747]  <TASK>
[  169.514720][ T5747]  dump_stack_lvl+0x168/0x230
[  169.519918][ T5747]  ? show_regs_print_info+0x20/0x20
[  169.525483][ T5747]  ? load_image+0x3b0/0x3b0
[  169.530407][ T5747]  sysfs_create_dir_ns+0x252/0x280
[  169.531521][ T5739] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  169.536588][ T5747]  ? __lock_acquire+0x7c60/0x7c60
[  169.549468][ T5747]  ? sysfs_warn_dup+0xa0/0xa0
[  169.554619][ T5747]  ? do_raw_spin_unlock+0x11d/0x230
[  169.561008][ T5747]  kobject_add_internal+0x662/0xd00
[  169.567926][ T5747]  kobject_init_and_add+0x122/0x190
[  169.573487][ T5747]  ? lockdep_softirqs_off+0x420/0x420
[  169.579753][ T5747]  ? kobject_add+0x210/0x210
[  169.584738][ T5747]  ? __init_swait_queue_head+0xa5/0x150
[  169.590958][ T5747]  gfs2_sys_fs_add+0x234/0x480
[  169.596454][ T5747]  ? gfs2_recover_set+0x240/0x240
[  169.602182][ T5747]  ? snprintf+0xd7/0x120
[  169.607037][ T5747]  ? __free_pages+0x95/0x1a0
[  169.615312][ T5747]  ? vscnprintf+0x80/0x80
[  169.623216][ T5747]  gfs2_fill_super+0x128d/0x1f50
[  169.628504][ T5747]  ? gfs2_reconfigure+0xcd0/0xcd0
[  169.634246][ T5747]  ? preempt_count_add+0x8d/0x190
[  169.640157][ T5747]  ? sb_set_blocksize+0xa5/0xe0
[  169.645363][ T5747]  get_tree_bdev+0x3f1/0x610
[  169.650423][ T5747]  ? gfs2_reconfigure+0xcd0/0xcd0
[  169.655897][ T5747]  gfs2_get_tree+0x4d/0x1e0
[  169.661469][ T5747]  vfs_get_tree+0x88/0x270
[  169.667592][ T5747]  do_new_mount+0x24a/0xa40
[  169.672924][ T5747]  __se_sys_mount+0x2d6/0x3c0
[  169.678230][ T5747]  ? __x64_sys_mount+0xc0/0xc0
[  169.683751][ T5747]  ? lockdep_hardirqs_on+0x94/0x140
[  169.689690][ T5747]  ? __x64_sys_mount+0x1c/0xc0
[  169.695673][ T5747]  do_syscall_64+0x4c/0xa0
[  169.701621][ T5747]  ? clear_bhb_loop+0x30/0x80
[  169.706668][ T5747]  ? clear_bhb_loop+0x30/0x80
[  169.712332][ T5747]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  169.721013][ T5747] RIP: 0033:0x7f7b6e11defa
[  169.727074][ T5747] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  169.752842][ T5747] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  169.762422][ T5747] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  169.773018][ T5747] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  169.782350][ T5747] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  169.791166][ T5747] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  169.800051][ T5747] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  169.809356][ T5747]  </TASK>
[  169.819933][ T5747] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  169.840179][ T5745] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  169.852577][ T5745] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  169.888405][ T5747] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  169.962477][ T5745] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  169.993393][ T5747] syz.4.75 (5747): drop_caches: 2
[  170.394745][ T5745] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  171.842267][ T5779] loop0: detected capacity change from 0 to 32768
[  171.946502][ T5781] loop2: detected capacity change from 0 to 32768
[  171.954589][ T5772] loop4: detected capacity change from 0 to 32768
[  171.966377][ T5779] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  172.001475][ T5781] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  172.030839][ T5779] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  172.034453][ T5781] CPU: 0 PID: 5781 Comm: syz.2.79 Not tainted syzkaller #0
[  172.049615][ T5781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  172.063330][ T5781] Call Trace:
[  172.067645][ T5781]  <TASK>
[  172.071842][ T5781]  dump_stack_lvl+0x168/0x230
[  172.078069][ T5781]  ? show_regs_print_info+0x20/0x20
[  172.085177][ T5781]  ? load_image+0x3b0/0x3b0
[  172.091576][ T5781]  sysfs_create_dir_ns+0x252/0x280
[  172.098356][ T5781]  ? __lock_acquire+0x7c60/0x7c60
[  172.106045][ T5781]  ? sysfs_warn_dup+0xa0/0xa0
[  172.113371][ T5781]  ? do_raw_spin_unlock+0x11d/0x230
[  172.121629][ T5781]  kobject_add_internal+0x662/0xd00
[  172.129610][ T5781]  kobject_init_and_add+0x122/0x190
[  172.137631][ T5781]  ? lockdep_softirqs_off+0x420/0x420
[  172.144081][ T5781]  ? kobject_add+0x210/0x210
[  172.149551][ T5781]  ? __init_swait_queue_head+0xa5/0x150
[  172.156426][ T5781]  gfs2_sys_fs_add+0x234/0x480
[  172.162524][ T5781]  ? gfs2_recover_set+0x240/0x240
[  172.169038][ T5781]  ? snprintf+0xd7/0x120
[  172.174757][ T5781]  ? __free_pages+0x95/0x1a0
[  172.180844][ T5781]  ? vscnprintf+0x80/0x80
[  172.186234][ T5781]  gfs2_fill_super+0x128d/0x1f50
[  172.191994][ T5781]  ? gfs2_reconfigure+0xcd0/0xcd0
[  172.197964][ T5781]  ? preempt_count_add+0x8d/0x190
[  172.204722][ T5781]  ? sb_set_blocksize+0xa5/0xe0
[  172.210590][ T5781]  get_tree_bdev+0x3f1/0x610
[  172.217292][ T5781]  ? gfs2_reconfigure+0xcd0/0xcd0
[  172.223065][ T5781]  gfs2_get_tree+0x4d/0x1e0
[  172.228633][ T5781]  vfs_get_tree+0x88/0x270
[  172.233374][ T5781]  do_new_mount+0x24a/0xa40
[  172.238407][ T5781]  __se_sys_mount+0x2d6/0x3c0
[  172.244106][ T5781]  ? __x64_sys_mount+0xc0/0xc0
[  172.249338][ T5781]  ? lockdep_hardirqs_on+0x94/0x140
[  172.255282][ T5781]  ? __x64_sys_mount+0x1c/0xc0
[  172.260252][ T5781]  do_syscall_64+0x4c/0xa0
[  172.264818][ T5781]  ? clear_bhb_loop+0x30/0x80
[  172.269843][ T5781]  ? clear_bhb_loop+0x30/0x80
[  172.275137][ T5781]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  172.281693][ T5781] RIP: 0033:0x7f693264eefa
[  172.286332][ T5781] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  172.307038][ T5781] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  172.316658][ T5781] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  172.325633][ T5781] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  172.334156][ T5781] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  172.342636][ T5781] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  172.351622][ T5781] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  172.360346][ T5781]  </TASK>
[  172.368499][ T5778] loop1: detected capacity change from 0 to 32768
[  172.431721][ T5778] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  172.443823][ T5779] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  172.461824][ T5772] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  172.488092][ T5772] CPU: 1 PID: 5772 Comm: syz.4.77 Not tainted syzkaller #0
[  172.496474][ T5772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  172.508107][ T5772] Call Trace:
[  172.512074][ T5772]  <TASK>
[  172.515971][ T5772]  dump_stack_lvl+0x168/0x230
[  172.521920][ T5772]  ? show_regs_print_info+0x20/0x20
[  172.533625][ T5772]  ? load_image+0x3b0/0x3b0
[  172.540125][ T5772]  sysfs_create_dir_ns+0x252/0x280
[  172.547697][ T5772]  ? __lock_acquire+0x7c60/0x7c60
[  172.554145][ T5772]  ? sysfs_warn_dup+0xa0/0xa0
[  172.559614][ T5772]  ? do_raw_spin_unlock+0x11d/0x230
[  172.566927][ T5772]  kobject_add_internal+0x662/0xd00
[  172.574777][ T5772]  kobject_init_and_add+0x122/0x190
[  172.582343][ T5772]  ? lockdep_softirqs_off+0x420/0x420
[  172.588514][ T5772]  ? kobject_add+0x210/0x210
[  172.593653][ T5772]  ? __init_swait_queue_head+0xa5/0x150
[  172.600048][ T5772]  gfs2_sys_fs_add+0x234/0x480
[  172.605818][ T5772]  ? gfs2_recover_set+0x240/0x240
[  172.611182][ T5772]  ? snprintf+0xd7/0x120
[  172.615846][ T5772]  ? __free_pages+0x95/0x1a0
[  172.621490][ T5772]  ? vscnprintf+0x80/0x80
[  172.627005][ T5772]  gfs2_fill_super+0x128d/0x1f50
[  172.634698][ T5772]  ? gfs2_reconfigure+0xcd0/0xcd0
[  172.640394][ T5772]  ? preempt_count_add+0x8d/0x190
[  172.646124][ T5772]  ? sb_set_blocksize+0xa5/0xe0
[  172.652425][ T5772]  get_tree_bdev+0x3f1/0x610
[  172.657096][ T5772]  ? gfs2_reconfigure+0xcd0/0xcd0
[  172.662522][ T5772]  gfs2_get_tree+0x4d/0x1e0
[  172.667624][ T5772]  vfs_get_tree+0x88/0x270
[  172.673082][ T5772]  do_new_mount+0x24a/0xa40
[  172.679045][ T5772]  __se_sys_mount+0x2d6/0x3c0
[  172.683955][ T5772]  ? __x64_sys_mount+0xc0/0xc0
[  172.689493][ T5772]  ? lockdep_hardirqs_on+0x94/0x140
[  172.695329][ T5772]  ? __x64_sys_mount+0x1c/0xc0
[  172.701368][ T5772]  do_syscall_64+0x4c/0xa0
[  172.706685][ T5772]  ? clear_bhb_loop+0x30/0x80
[  172.711602][ T5772]  ? clear_bhb_loop+0x30/0x80
[  172.716646][ T5772]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  172.722950][ T5772] RIP: 0033:0x7f7b6e11defa
[  172.728256][ T5772] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  172.752039][ T5772] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  172.761020][ T5772] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  172.769244][ T5772] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  172.777910][ T5772] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  172.786181][ T5772] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  172.795005][ T5772] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  172.804020][ T5772]  </TASK>
[  172.813663][ T5781] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  172.828010][ T5778] CPU: 0 PID: 5778 Comm: syz.1.76 Not tainted syzkaller #0
[  172.838535][ T5778] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  172.850650][ T5778] Call Trace:
[  172.854275][ T5778]  <TASK>
[  172.857979][ T5778]  dump_stack_lvl+0x168/0x230
[  172.864298][ T5778]  ? show_regs_print_info+0x20/0x20
[  172.870377][ T5778]  ? load_image+0x3b0/0x3b0
[  172.876640][ T5778]  sysfs_create_dir_ns+0x252/0x280
[  172.882325][ T5778]  ? __lock_acquire+0x7c60/0x7c60
[  172.888103][ T5778]  ? sysfs_warn_dup+0xa0/0xa0
[  172.894104][ T5778]  ? do_raw_spin_unlock+0x11d/0x230
[  172.899894][ T5778]  kobject_add_internal+0x662/0xd00
[  172.906009][ T5778]  kobject_init_and_add+0x122/0x190
[  172.907779][ T5781] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  172.911671][ T5778]  ? lockdep_softirqs_off+0x420/0x420
[  172.911712][ T5778]  ? kobject_add+0x210/0x210
[  172.911738][ T5778]  ? __init_swait_queue_head+0xa5/0x150
[  172.911767][ T5778]  gfs2_sys_fs_add+0x234/0x480
[  172.911790][ T5778]  ? gfs2_recover_set+0x240/0x240
[  172.911810][ T5778]  ? snprintf+0xd7/0x120
[  172.911834][ T5778]  ? __free_pages+0x95/0x1a0
[  172.911860][ T5778]  ? vscnprintf+0x80/0x80
[  172.911897][ T5778]  gfs2_fill_super+0x128d/0x1f50
[  172.911935][ T5778]  ? gfs2_reconfigure+0xcd0/0xcd0
[  172.972219][ T5778]  ? preempt_count_add+0x8d/0x190
[  172.977844][ T5778]  ? sb_set_blocksize+0xa5/0xe0
[  172.983136][ T5778]  get_tree_bdev+0x3f1/0x610
[  172.987886][ T5778]  ? gfs2_reconfigure+0xcd0/0xcd0
[  172.993414][ T5778]  gfs2_get_tree+0x4d/0x1e0
[  172.998434][ T5778]  vfs_get_tree+0x88/0x270
[  173.003078][ T5778]  do_new_mount+0x24a/0xa40
[  173.008397][ T5778]  __se_sys_mount+0x2d6/0x3c0
[  173.014326][ T5778]  ? __x64_sys_mount+0xc0/0xc0
[  173.021462][ T5778]  ? lockdep_hardirqs_on+0x94/0x140
[  173.027703][ T5778]  ? __x64_sys_mount+0x1c/0xc0
[  173.032781][ T5778]  do_syscall_64+0x4c/0xa0
[  173.037511][ T5778]  ? clear_bhb_loop+0x30/0x80
[  173.042581][ T5778]  ? clear_bhb_loop+0x30/0x80
[  173.046072][ T5779] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  173.048171][ T5778]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  173.048209][ T5778] RIP: 0033:0x7f049eb23efa
[  173.048229][ T5778] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  173.048248][ T5778] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  173.101468][ T5778] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  173.110957][ T5778] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  173.119749][ T5778] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  173.120450][ T5779] syz.0.78 (5779): drop_caches: 2
[  173.130874][ T5778] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  173.130900][ T5778] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  173.130931][ T5778]  </TASK>
[  173.188164][ T5772] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  173.256729][ T5772] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  173.272688][ T5778] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  173.303213][ T5778] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
2025/11/20 09:00:33 executed programs: 76
[  173.349844][ T5789] loop3: detected capacity change from 0 to 32768
[  173.378153][ T5789] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  173.485561][ T5789] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  173.557426][ T5789] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  173.920904][ T5789] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  173.996434][ T5789] syz.3.80 (5789): drop_caches: 2
[  175.324593][ T5821] loop2: detected capacity change from 0 to 32768
[  175.384341][ T5824] loop0: detected capacity change from 0 to 32768
[  175.390846][ T5819] loop1: detected capacity change from 0 to 32768
[  175.408968][ T5821] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  175.456636][ T5821] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  175.481014][ T5819] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  175.500755][ T5821] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  175.511872][ T5824] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  175.528035][ T5819] CPU: 0 PID: 5819 Comm: syz.1.82 Not tainted syzkaller #0
[  175.535497][ T5819] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  175.546507][ T5819] Call Trace:
[  175.551068][ T5819]  <TASK>
[  175.554217][ T5819]  dump_stack_lvl+0x168/0x230
[  175.559134][ T5819]  ? show_regs_print_info+0x20/0x20
[  175.564585][ T5819]  ? load_image+0x3b0/0x3b0
[  175.569442][ T5819]  sysfs_create_dir_ns+0x252/0x280
[  175.575672][ T5819]  ? __lock_acquire+0x7c60/0x7c60
[  175.581869][ T5819]  ? sysfs_warn_dup+0xa0/0xa0
[  175.587068][ T5819]  ? do_raw_spin_unlock+0x11d/0x230
[  175.592811][ T5819]  kobject_add_internal+0x662/0xd00
[  175.598771][ T5819]  kobject_init_and_add+0x122/0x190
[  175.604165][ T5819]  ? lockdep_softirqs_off+0x420/0x420
[  175.609943][ T5819]  ? kobject_add+0x210/0x210
[  175.614742][ T5819]  ? __init_swait_queue_head+0xa5/0x150
[  175.620700][ T5819]  gfs2_sys_fs_add+0x234/0x480
[  175.625617][ T5819]  ? gfs2_recover_set+0x240/0x240
[  175.630954][ T5819]  ? snprintf+0xd7/0x120
[  175.635418][ T5819]  ? __free_pages+0x95/0x1a0
[  175.640071][ T5819]  ? vscnprintf+0x80/0x80
[  175.644652][ T5819]  gfs2_fill_super+0x128d/0x1f50
[  175.649945][ T5819]  ? gfs2_reconfigure+0xcd0/0xcd0
[  175.655119][ T5819]  ? preempt_count_add+0x8d/0x190
[  175.660285][ T5819]  ? sb_set_blocksize+0xa5/0xe0
[  175.665225][ T5819]  get_tree_bdev+0x3f1/0x610
[  175.670064][ T5819]  ? gfs2_reconfigure+0xcd0/0xcd0
[  175.675337][ T5819]  gfs2_get_tree+0x4d/0x1e0
[  175.680323][ T5819]  vfs_get_tree+0x88/0x270
[  175.684989][ T5819]  do_new_mount+0x24a/0xa40
[  175.689548][ T5819]  __se_sys_mount+0x2d6/0x3c0
[  175.694473][ T5819]  ? __x64_sys_mount+0xc0/0xc0
[  175.699560][ T5819]  ? lockdep_hardirqs_on+0x94/0x140
[  175.704803][ T5819]  ? __x64_sys_mount+0x1c/0xc0
[  175.709867][ T5819]  do_syscall_64+0x4c/0xa0
[  175.714539][ T5819]  ? clear_bhb_loop+0x30/0x80
[  175.719716][ T5819]  ? clear_bhb_loop+0x30/0x80
[  175.724661][ T5819]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  175.731253][ T5819] RIP: 0033:0x7f049eb23efa
[  175.736124][ T5819] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  175.745290][ T5831] loop4: detected capacity change from 0 to 32768
[  175.756578][ T5819] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  175.756607][ T5819] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  175.756622][ T5819] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  175.756634][ T5819] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  175.756647][ T5819] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  175.756659][ T5819] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  175.756686][ T5819]  </TASK>
[  175.792196][ T5827] loop3: detected capacity change from 0 to 32768
[  175.814089][ T5824] CPU: 1 PID: 5824 Comm: syz.0.81 Not tainted syzkaller #0
[  175.833135][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  175.843990][ T5824] Call Trace:
[  175.848157][ T5824]  <TASK>
[  175.851658][ T5824]  dump_stack_lvl+0x168/0x230
[  175.856732][ T5824]  ? show_regs_print_info+0x20/0x20
[  175.862020][ T5824]  ? load_image+0x3b0/0x3b0
[  175.866688][ T5824]  sysfs_create_dir_ns+0x252/0x280
[  175.872398][ T5824]  ? __lock_acquire+0x7c60/0x7c60
[  175.877655][ T5824]  ? sysfs_warn_dup+0xa0/0xa0
[  175.882743][ T5824]  ? do_raw_spin_unlock+0x11d/0x230
[  175.888191][ T5824]  kobject_add_internal+0x662/0xd00
[  175.893797][ T5824]  kobject_init_and_add+0x122/0x190
[  175.899240][ T5824]  ? lockdep_softirqs_off+0x420/0x420
[  175.905107][ T5824]  ? kobject_add+0x210/0x210
[  175.909834][ T5824]  ? __init_swait_queue_head+0xa5/0x150
[  175.916438][ T5824]  gfs2_sys_fs_add+0x234/0x480
[  175.921430][ T5824]  ? gfs2_recover_set+0x240/0x240
[  175.926589][ T5824]  ? snprintf+0xd7/0x120
[  175.931110][ T5824]  ? __free_pages+0x95/0x1a0
[  175.935869][ T5824]  ? vscnprintf+0x80/0x80
[  175.940357][ T5824]  gfs2_fill_super+0x128d/0x1f50
[  175.945353][ T5824]  ? gfs2_reconfigure+0xcd0/0xcd0
[  175.950614][ T5824]  ? preempt_count_add+0x8d/0x190
[  175.955716][ T5824]  ? sb_set_blocksize+0xa5/0xe0
[  175.960719][ T5824]  get_tree_bdev+0x3f1/0x610
[  175.965525][ T5824]  ? gfs2_reconfigure+0xcd0/0xcd0
[  175.971383][ T5824]  gfs2_get_tree+0x4d/0x1e0
[  175.976398][ T5824]  vfs_get_tree+0x88/0x270
[  175.980943][ T5824]  do_new_mount+0x24a/0xa40
[  175.985607][ T5824]  __se_sys_mount+0x2d6/0x3c0
[  175.990677][ T5824]  ? __x64_sys_mount+0xc0/0xc0
[  175.996332][ T5824]  ? lockdep_hardirqs_on+0x94/0x140
[  176.001764][ T5824]  ? __x64_sys_mount+0x1c/0xc0
[  176.003771][ T5821] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  176.006741][ T5824]  do_syscall_64+0x4c/0xa0
[  176.006767][ T5824]  ? clear_bhb_loop+0x30/0x80
[  176.024520][ T5824]  ? clear_bhb_loop+0x30/0x80
[  176.029600][ T5824]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  176.036519][ T5824] RIP: 0033:0x7f9435efdefa
[  176.040998][ T5824] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  176.051768][ T5819] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  176.062265][ T5824] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  176.062295][ T5824] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  176.062310][ T5824] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  176.062324][ T5824] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  176.062338][ T5824] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  176.062352][ T5824] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  176.062382][ T5824]  </TASK>
[  176.134347][ T5819] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  176.135308][ T5824] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  176.185428][ T5819] syz.1.82 (5819): drop_caches: 2
[  176.208039][ T5824] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  176.217994][ T5831] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  176.238378][ T5831] CPU: 1 PID: 5831 Comm: syz.4.85 Not tainted syzkaller #0
[  176.240076][ T5827] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  176.245651][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  176.260159][ T5821] syz.2.83 (5821): drop_caches: 2
[  176.263918][ T5831] Call Trace:
[  176.263933][ T5831]  <TASK>
[  176.263943][ T5831]  dump_stack_lvl+0x168/0x230
[  176.263976][ T5831]  ? show_regs_print_info+0x20/0x20
[  176.264001][ T5831]  ? load_image+0x3b0/0x3b0
[  176.264037][ T5831]  sysfs_create_dir_ns+0x252/0x280
[  176.264064][ T5831]  ? __lock_acquire+0x7c60/0x7c60
[  176.264088][ T5831]  ? sysfs_warn_dup+0xa0/0xa0
[  176.264115][ T5831]  ? do_raw_spin_unlock+0x11d/0x230
[  176.264138][ T5831]  kobject_add_internal+0x662/0xd00
[  176.264168][ T5831]  kobject_init_and_add+0x122/0x190
[  176.322200][ T5831]  ? lockdep_softirqs_off+0x420/0x420
[  176.327646][ T5831]  ? kobject_add+0x210/0x210
[  176.332285][ T5831]  ? __init_swait_queue_head+0xa5/0x150
[  176.337894][ T5831]  gfs2_sys_fs_add+0x234/0x480
[  176.342787][ T5831]  ? gfs2_recover_set+0x240/0x240
[  176.347943][ T5831]  ? snprintf+0xd7/0x120
[  176.352308][ T5831]  ? __free_pages+0x95/0x1a0
[  176.357016][ T5831]  ? vscnprintf+0x80/0x80
[  176.361372][ T5831]  gfs2_fill_super+0x128d/0x1f50
[  176.366710][ T5831]  ? gfs2_reconfigure+0xcd0/0xcd0
[  176.371882][ T5831]  ? preempt_count_add+0x8d/0x190
[  176.377184][ T5831]  ? sb_set_blocksize+0xa5/0xe0
[  176.382084][ T5831]  get_tree_bdev+0x3f1/0x610
[  176.386696][ T5831]  ? gfs2_reconfigure+0xcd0/0xcd0
[  176.391820][ T5831]  gfs2_get_tree+0x4d/0x1e0
[  176.396361][ T5831]  vfs_get_tree+0x88/0x270
[  176.400789][ T5831]  do_new_mount+0x24a/0xa40
[  176.405430][ T5831]  __se_sys_mount+0x2d6/0x3c0
[  176.410206][ T5831]  ? __x64_sys_mount+0xc0/0xc0
[  176.415019][ T5831]  ? lockdep_hardirqs_on+0x94/0x140
[  176.420546][ T5831]  ? __x64_sys_mount+0x1c/0xc0
[  176.425451][ T5831]  do_syscall_64+0x4c/0xa0
[  176.430598][ T5831]  ? clear_bhb_loop+0x30/0x80
[  176.435396][ T5831]  ? clear_bhb_loop+0x30/0x80
[  176.440421][ T5831]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  176.446636][ T5831] RIP: 0033:0x7f7b6e11defa
[  176.451244][ T5831] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  176.472829][ T5831] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  176.481925][ T5831] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  176.490151][ T5831] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  176.498365][ T5831] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  176.506703][ T5831] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  176.514797][ T5831] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  176.523278][ T5831]  </TASK>
[  176.557977][ T5827] CPU: 0 PID: 5827 Comm: syz.3.84 Not tainted syzkaller #0
[  176.565380][ T5827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  176.576049][ T5827] Call Trace:
[  176.580270][ T5827]  <TASK>
[  176.583336][ T5827]  dump_stack_lvl+0x168/0x230
[  176.588682][ T5827]  ? show_regs_print_info+0x20/0x20
[  176.594214][ T5827]  ? load_image+0x3b0/0x3b0
[  176.599192][ T5827]  sysfs_create_dir_ns+0x252/0x280
[  176.604503][ T5827]  ? __lock_acquire+0x7c60/0x7c60
[  176.609906][ T5827]  ? sysfs_warn_dup+0xa0/0xa0
[  176.614965][ T5827]  ? do_raw_spin_unlock+0x11d/0x230
[  176.621104][ T5827]  kobject_add_internal+0x662/0xd00
[  176.626674][ T5827]  kobject_init_and_add+0x122/0x190
[  176.632319][ T5827]  ? lockdep_softirqs_off+0x420/0x420
[  176.638020][ T5827]  ? kobject_add+0x210/0x210
[  176.643539][ T5827]  ? __init_swait_queue_head+0xa5/0x150
[  176.649495][ T5827]  gfs2_sys_fs_add+0x234/0x480
[  176.654472][ T5827]  ? gfs2_recover_set+0x240/0x240
[  176.660054][ T5827]  ? snprintf+0xd7/0x120
[  176.664922][ T5827]  ? __free_pages+0x95/0x1a0
[  176.669529][ T5827]  ? vscnprintf+0x80/0x80
[  176.673883][ T5827]  gfs2_fill_super+0x128d/0x1f50
[  176.678974][ T5827]  ? gfs2_reconfigure+0xcd0/0xcd0
[  176.684460][ T5827]  ? preempt_count_add+0x8d/0x190
[  176.689882][ T5827]  ? sb_set_blocksize+0xa5/0xe0
[  176.695300][ T5827]  get_tree_bdev+0x3f1/0x610
[  176.700026][ T5827]  ? gfs2_reconfigure+0xcd0/0xcd0
[  176.705247][ T5827]  gfs2_get_tree+0x4d/0x1e0
[  176.710088][ T5827]  vfs_get_tree+0x88/0x270
[  176.714554][ T5827]  do_new_mount+0x24a/0xa40
[  176.719203][ T5827]  __se_sys_mount+0x2d6/0x3c0
[  176.724160][ T5827]  ? __x64_sys_mount+0xc0/0xc0
[  176.729213][ T5827]  ? lockdep_hardirqs_on+0x94/0x140
[  176.734818][ T5827]  ? __x64_sys_mount+0x1c/0xc0
[  176.739722][ T5827]  do_syscall_64+0x4c/0xa0
[  176.744460][ T5827]  ? clear_bhb_loop+0x30/0x80
[  176.749554][ T5827]  ? clear_bhb_loop+0x30/0x80
[  176.754609][ T5827]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  176.760846][ T5827] RIP: 0033:0x7fa866a5befa
[  176.765826][ T5827] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  176.787459][ T5827] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  176.796373][ T5827] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  176.804562][ T5827] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  176.812778][ T5827] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  176.820867][ T5827] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  176.829060][ T5827] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  176.837809][ T5827]  </TASK>
[  176.843947][ T5824] syz.0.81 (5824): drop_caches: 2
[  176.858313][ T5831] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  176.904590][ T5831] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  176.926083][ T5831] syz.4.85 (5831): drop_caches: 2
[  177.617230][ T5827] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  177.652812][ T5827] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  177.968406][ T5859] loop4: detected capacity change from 0 to 32768
[  178.063239][ T5859] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  178.107278][ T5859] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  178.126142][ T5854] loop1: detected capacity change from 0 to 32768
[  178.173330][ T5859] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  178.186772][ T5857] loop0: detected capacity change from 0 to 32768
[  178.260649][ T5857] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  178.272464][ T5854] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  178.309033][ T5857] CPU: 1 PID: 5857 Comm: syz.0.88 Not tainted syzkaller #0
[  178.316803][ T5857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  178.328671][ T5857] Call Trace:
[  178.332167][ T5857]  <TASK>
[  178.335210][ T5857]  dump_stack_lvl+0x168/0x230
[  178.340031][ T5857]  ? show_regs_print_info+0x20/0x20
[  178.345633][ T5857]  ? load_image+0x3b0/0x3b0
[  178.350292][ T5857]  sysfs_create_dir_ns+0x252/0x280
[  178.355635][ T5857]  ? __lock_acquire+0x7c60/0x7c60
[  178.360709][ T5857]  ? sysfs_warn_dup+0xa0/0xa0
[  178.365600][ T5857]  ? do_raw_spin_unlock+0x11d/0x230
[  178.371441][ T5857]  kobject_add_internal+0x662/0xd00
[  178.377013][ T5857]  kobject_init_and_add+0x122/0x190
[  178.382575][ T5857]  ? lockdep_softirqs_off+0x420/0x420
[  178.388277][ T5857]  ? kobject_add+0x210/0x210
[  178.393525][ T5857]  ? __init_swait_queue_head+0xa5/0x150
[  178.399422][ T5857]  gfs2_sys_fs_add+0x234/0x480
[  178.404237][ T5857]  ? gfs2_recover_set+0x240/0x240
[  178.409314][ T5857]  ? snprintf+0xd7/0x120
[  178.413841][ T5857]  ? __free_pages+0x95/0x1a0
[  178.418848][ T5857]  ? vscnprintf+0x80/0x80
[  178.423440][ T5857]  gfs2_fill_super+0x128d/0x1f50
[  178.428703][ T5857]  ? gfs2_reconfigure+0xcd0/0xcd0
[  178.433922][ T5857]  ? preempt_count_add+0x8d/0x190
[  178.440039][ T5857]  ? sb_set_blocksize+0xa5/0xe0
[  178.446112][ T5857]  get_tree_bdev+0x3f1/0x610
[  178.451220][ T5857]  ? gfs2_reconfigure+0xcd0/0xcd0
[  178.456756][ T5857]  gfs2_get_tree+0x4d/0x1e0
[  178.462201][ T5857]  vfs_get_tree+0x88/0x270
[  178.467112][ T5857]  do_new_mount+0x24a/0xa40
[  178.472026][ T5857]  __se_sys_mount+0x2d6/0x3c0
[  178.476944][ T5857]  ? __x64_sys_mount+0xc0/0xc0
[  178.481842][ T5857]  ? lockdep_hardirqs_on+0x94/0x140
[  178.487269][ T5857]  ? __x64_sys_mount+0x1c/0xc0
[  178.492431][ T5857]  do_syscall_64+0x4c/0xa0
[  178.497254][ T5857]  ? clear_bhb_loop+0x30/0x80
[  178.502312][ T5857]  ? clear_bhb_loop+0x30/0x80
[  178.507428][ T5857]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  178.513930][ T5857] RIP: 0033:0x7f9435efdefa
[  178.519028][ T5857] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  178.539540][ T5857] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  178.548466][ T5857] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  178.557116][ T5857] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  178.565565][ T5857] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  178.574507][ T5857] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  178.583219][ T5857] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  178.591351][ T5857]  </TASK>
[  178.638068][ T5854] CPU: 0 PID: 5854 Comm: syz.1.86 Not tainted syzkaller #0
[  178.645341][ T5859] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  178.645452][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  178.645467][ T5854] Call Trace:
[  178.654723][ T5857] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  178.664399][ T5854]  <TASK>
[  178.664418][ T5854]  dump_stack_lvl+0x168/0x230
[  178.664452][ T5854]  ? show_regs_print_info+0x20/0x20
[  178.664475][ T5854]  ? load_image+0x3b0/0x3b0
[  178.664509][ T5854]  sysfs_create_dir_ns+0x252/0x280
[  178.667800][ T5857] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  178.682507][ T5854]  ? __lock_acquire+0x7c60/0x7c60
[  178.682549][ T5854]  ? sysfs_warn_dup+0xa0/0xa0
[  178.682578][ T5854]  ? do_raw_spin_unlock+0x11d/0x230
[  178.682603][ T5854]  kobject_add_internal+0x662/0xd00
[  178.695784][ T5857] syz.0.88 (5857): drop_caches: 2
[  178.696655][ T5854]  kobject_init_and_add+0x122/0x190
[  178.750666][ T5854]  ? lockdep_softirqs_off+0x420/0x420
[  178.756093][ T5854]  ? kobject_add+0x210/0x210
[  178.760782][ T5854]  ? __init_swait_queue_head+0xa5/0x150
[  178.766654][ T5854]  gfs2_sys_fs_add+0x234/0x480
[  178.771593][ T5854]  ? gfs2_recover_set+0x240/0x240
[  178.776847][ T5854]  ? snprintf+0xd7/0x120
[  178.781145][ T5854]  ? __free_pages+0x95/0x1a0
2025/11/20 09:00:39 executed programs: 86
[  178.786654][ T5854]  ? vscnprintf+0x80/0x80
[  178.791164][ T5854]  gfs2_fill_super+0x128d/0x1f50
[  178.796376][ T5854]  ? gfs2_reconfigure+0xcd0/0xcd0
[  178.801857][ T5854]  ? preempt_count_add+0x8d/0x190
[  178.807392][ T5854]  ? sb_set_blocksize+0xa5/0xe0
[  178.812943][ T5854]  get_tree_bdev+0x3f1/0x610
[  178.817750][ T5854]  ? gfs2_reconfigure+0xcd0/0xcd0
[  178.823071][ T5854]  gfs2_get_tree+0x4d/0x1e0
[  178.828608][ T5854]  vfs_get_tree+0x88/0x270
[  178.833334][ T5854]  do_new_mount+0x24a/0xa40
[  178.838282][ T5854]  __se_sys_mount+0x2d6/0x3c0
[  178.843193][ T5854]  ? __x64_sys_mount+0xc0/0xc0
[  178.848655][ T5854]  ? lockdep_hardirqs_on+0x94/0x140
[  178.855240][ T5854]  ? __x64_sys_mount+0x1c/0xc0
[  178.860723][ T5854]  do_syscall_64+0x4c/0xa0
[  178.865469][ T5854]  ? clear_bhb_loop+0x30/0x80
[  178.870702][ T5854]  ? clear_bhb_loop+0x30/0x80
[  178.875604][ T5854]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  178.882278][ T5854] RIP: 0033:0x7f049eb23efa
[  178.887014][ T5854] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  178.908104][ T5854] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  178.917494][ T5854] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  178.926523][ T5854] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  178.935203][ T5854] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  178.945381][ T5854] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  178.954960][ T5854] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  178.964143][ T5854]  </TASK>
[  178.986900][ T5859] syz.4.89 (5859): drop_caches: 2
[  179.601985][ T5862] loop3: detected capacity change from 0 to 32768
[  179.650764][ T5862] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  179.669623][ T5864] loop2: detected capacity change from 0 to 32768
[  179.678570][ T5862] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  179.706419][ T5854] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  179.726217][ T5854] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  179.736856][ T5864] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  179.749566][ T5864] CPU: 1 PID: 5864 Comm: syz.2.87 Not tainted syzkaller #0
[  179.757093][ T5864] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  179.767292][ T5864] Call Trace:
[  179.770878][ T5864]  <TASK>
[  179.773987][ T5864]  dump_stack_lvl+0x168/0x230
[  179.779733][ T5864]  ? show_regs_print_info+0x20/0x20
[  179.785627][ T5864]  ? load_image+0x3b0/0x3b0
[  179.792992][ T5864]  sysfs_create_dir_ns+0x252/0x280
[  179.798618][ T5864]  ? __lock_acquire+0x7c60/0x7c60
[  179.804892][ T5864]  ? sysfs_warn_dup+0xa0/0xa0
[  179.810146][ T5864]  ? do_raw_spin_unlock+0x11d/0x230
[  179.816161][ T5864]  kobject_add_internal+0x662/0xd00
[  179.821952][ T5864]  kobject_init_and_add+0x122/0x190
[  179.827712][ T5864]  ? lockdep_softirqs_off+0x420/0x420
[  179.834343][ T5864]  ? kobject_add+0x210/0x210
[  179.839627][ T5864]  ? __init_swait_queue_head+0xa5/0x150
[  179.846594][ T5864]  gfs2_sys_fs_add+0x234/0x480
[  179.853279][ T5864]  ? gfs2_recover_set+0x240/0x240
[  179.861181][ T5864]  ? snprintf+0xd7/0x120
[  179.866426][ T5864]  ? __free_pages+0x95/0x1a0
[  179.872411][ T5864]  ? vscnprintf+0x80/0x80
[  179.878421][ T5864]  gfs2_fill_super+0x128d/0x1f50
[  179.884072][ T5864]  ? gfs2_reconfigure+0xcd0/0xcd0
[  179.890097][ T5864]  ? preempt_count_add+0x8d/0x190
[  179.896173][ T5864]  ? sb_set_blocksize+0xa5/0xe0
[  179.901479][ T5864]  get_tree_bdev+0x3f1/0x610
[  179.906981][ T5864]  ? gfs2_reconfigure+0xcd0/0xcd0
[  179.912226][ T5864]  gfs2_get_tree+0x4d/0x1e0
[  179.917112][ T5864]  vfs_get_tree+0x88/0x270
[  179.921667][ T5864]  do_new_mount+0x24a/0xa40
[  179.926319][ T5864]  __se_sys_mount+0x2d6/0x3c0
[  179.931330][ T5864]  ? __x64_sys_mount+0xc0/0xc0
[  179.936913][ T5864]  ? lockdep_hardirqs_on+0x94/0x140
[  179.941263][ T5866] loop0: detected capacity change from 0 to 32768
[  179.943107][ T5864]  ? __x64_sys_mount+0x1c/0xc0
[  179.955927][ T5864]  do_syscall_64+0x4c/0xa0
[  179.961038][ T5864]  ? clear_bhb_loop+0x30/0x80
[  179.966332][ T5864]  ? clear_bhb_loop+0x30/0x80
[  179.968480][ T5862] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  179.971547][ T5864]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  179.971592][ T5864] RIP: 0033:0x7f693264eefa
[  179.971616][ T5864] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  179.971634][ T5864] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  180.023683][ T5866] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  180.027818][ T5864] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  180.046394][ T5864] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  180.055443][ T5864] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  180.063864][ T5864] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  180.073010][ T5864] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  180.081059][ T5864]  </TASK>
[  180.087081][ T5866] CPU: 1 PID: 5866 Comm: syz.0.91 Not tainted syzkaller #0
[  180.096124][ T5866] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  180.108113][ T5866] Call Trace:
[  180.112541][ T5866]  <TASK>
[  180.116106][ T5866]  dump_stack_lvl+0x168/0x230
[  180.121691][ T5866]  ? show_regs_print_info+0x20/0x20
[  180.127934][ T5866]  ? load_image+0x3b0/0x3b0
[  180.134001][ T5866]  sysfs_create_dir_ns+0x252/0x280
[  180.141296][ T5866]  ? __lock_acquire+0x7c60/0x7c60
[  180.149222][ T5866]  ? sysfs_warn_dup+0xa0/0xa0
[  180.154766][ T5866]  ? do_raw_spin_unlock+0x11d/0x230
[  180.161534][ T5866]  kobject_add_internal+0x662/0xd00
[  180.168569][ T5866]  kobject_init_and_add+0x122/0x190
[  180.176396][ T5866]  ? lockdep_softirqs_off+0x420/0x420
[  180.182883][ T5866]  ? kobject_add+0x210/0x210
[  180.188927][ T5866]  ? __init_swait_queue_head+0xa5/0x150
[  180.196225][ T5866]  gfs2_sys_fs_add+0x234/0x480
[  180.201800][ T5866]  ? gfs2_recover_set+0x240/0x240
[  180.208371][ T5866]  ? snprintf+0xd7/0x120
[  180.213661][ T5866]  ? __free_pages+0x95/0x1a0
[  180.219107][ T5866]  ? vscnprintf+0x80/0x80
[  180.224071][ T5866]  gfs2_fill_super+0x128d/0x1f50
[  180.229266][ T5866]  ? gfs2_reconfigure+0xcd0/0xcd0
[  180.234345][ T5866]  ? preempt_count_add+0x8d/0x190
[  180.239586][ T5866]  ? sb_set_blocksize+0xa5/0xe0
[  180.244661][ T5866]  get_tree_bdev+0x3f1/0x610
[  180.249844][ T5866]  ? gfs2_reconfigure+0xcd0/0xcd0
[  180.255649][ T5866]  gfs2_get_tree+0x4d/0x1e0
[  180.261813][ T5866]  vfs_get_tree+0x88/0x270
[  180.268448][ T5866]  do_new_mount+0x24a/0xa40
[  180.274837][ T5866]  __se_sys_mount+0x2d6/0x3c0
[  180.280252][ T5866]  ? __x64_sys_mount+0xc0/0xc0
[  180.285877][ T5866]  ? lockdep_hardirqs_on+0x94/0x140
[  180.292761][ T5866]  ? __x64_sys_mount+0x1c/0xc0
[  180.297627][ T5866]  do_syscall_64+0x4c/0xa0
[  180.302511][ T5866]  ? clear_bhb_loop+0x30/0x80
[  180.307236][ T5866]  ? clear_bhb_loop+0x30/0x80
[  180.312127][ T5866]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  180.312990][ T5862] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  180.318180][ T5866] RIP: 0033:0x7f9435efdefa
[  180.318214][ T5866] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  180.318232][ T5866] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  180.367886][ T5866] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  180.376342][ T5866] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  180.384518][ T5866] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  180.393829][ T5866] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  180.402956][ T5866] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  180.412466][ T5866]  </TASK>
[  180.413046][ T5862] syz.3.90 (5862): drop_caches: 2
[  180.423886][ T5866] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  180.448603][ T5866] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  180.469825][ T5864] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  180.488037][ T5864] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  180.779371][ T5868] loop4: detected capacity change from 0 to 32768
[  180.844925][ T5868] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  180.914958][ T5868] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  180.939662][ T5866] syz.0.91 (5866): drop_caches: 2
[  180.977268][ T5868] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  181.047570][ T5864] syz.2.87 (5864): drop_caches: 2
[  181.296007][ T5868] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  181.351930][ T5868] syz.4.92 (5868): drop_caches: 2
[  181.932060][ T5870] loop3: detected capacity change from 0 to 32768
[  181.961890][ T5870] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  182.016219][ T5870] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  182.096565][ T5870] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  182.317664][ T5870] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  182.389335][ T5872] loop1: detected capacity change from 0 to 32768
[  182.392494][ T5870] syz.3.94 (5870): drop_caches: 2
[  182.431549][ T5874] loop0: detected capacity change from 0 to 32768
[  182.547598][ T5872] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  182.549026][ T5874] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  182.595369][ T5872] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  182.645269][ T5872] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  182.669094][ T5874] CPU: 0 PID: 5874 Comm: syz.0.95 Not tainted syzkaller #0
[  182.677749][ T5874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  182.690655][ T5874] Call Trace:
[  182.694089][ T5874]  <TASK>
[  182.697302][ T5874]  dump_stack_lvl+0x168/0x230
[  182.702179][ T5874]  ? show_regs_print_info+0x20/0x20
[  182.707489][ T5874]  ? load_image+0x3b0/0x3b0
[  182.712429][ T5874]  sysfs_create_dir_ns+0x252/0x280
[  182.718055][ T5874]  ? __lock_acquire+0x7c60/0x7c60
[  182.723319][ T5874]  ? sysfs_warn_dup+0xa0/0xa0
[  182.728385][ T5874]  ? do_raw_spin_unlock+0x11d/0x230
[  182.733634][ T5874]  kobject_add_internal+0x662/0xd00
[  182.739069][ T5874]  kobject_init_and_add+0x122/0x190
[  182.745387][ T5874]  ? lockdep_softirqs_off+0x420/0x420
[  182.749330][ T5876] loop2: detected capacity change from 0 to 32768
[  182.751120][ T5874]  ? kobject_add+0x210/0x210
[  182.762695][ T5874]  ? __init_swait_queue_head+0xa5/0x150
[  182.768301][ T5874]  gfs2_sys_fs_add+0x234/0x480
[  182.773442][ T5874]  ? gfs2_recover_set+0x240/0x240
[  182.778715][ T5874]  ? snprintf+0xd7/0x120
[  182.783624][ T5874]  ? __free_pages+0x95/0x1a0
[  182.789072][ T5874]  ? vscnprintf+0x80/0x80
[  182.793682][ T5874]  gfs2_fill_super+0x128d/0x1f50
[  182.799383][ T5874]  ? gfs2_reconfigure+0xcd0/0xcd0
[  182.804796][ T5874]  ? preempt_count_add+0x8d/0x190
[  182.810626][ T5874]  ? sb_set_blocksize+0xa5/0xe0
[  182.816732][ T5874]  get_tree_bdev+0x3f1/0x610
[  182.822759][ T5874]  ? gfs2_reconfigure+0xcd0/0xcd0
[  182.829815][ T5874]  gfs2_get_tree+0x4d/0x1e0
[  182.835190][ T5874]  vfs_get_tree+0x88/0x270
[  182.840320][ T5874]  do_new_mount+0x24a/0xa40
[  182.845792][ T5874]  __se_sys_mount+0x2d6/0x3c0
[  182.851505][ T5874]  ? __x64_sys_mount+0xc0/0xc0
[  182.857913][ T5874]  ? lockdep_hardirqs_on+0x94/0x140
[  182.865861][ T5874]  ? __x64_sys_mount+0x1c/0xc0
[  182.871301][ T5874]  do_syscall_64+0x4c/0xa0
[  182.876278][ T5874]  ? clear_bhb_loop+0x30/0x80
[  182.882583][ T5874]  ? clear_bhb_loop+0x30/0x80
[  182.887747][ T5874]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  182.894753][ T5874] RIP: 0033:0x7f9435efdefa
[  182.899382][ T5874] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  182.920844][ T5874] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  182.929633][ T5874] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  182.939444][ T5874] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  182.949676][ T5874] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  182.959313][ T5874] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  182.969586][ T5874] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  182.978318][ T5874]  </TASK>
[  183.050631][ T5876] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  183.108174][ T5876] CPU: 0 PID: 5876 Comm: syz.2.96 Not tainted syzkaller #0
[  183.122200][ T5876] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  183.133907][ T5872] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  183.137930][ T5876] Call Trace:
[  183.137948][ T5876]  <TASK>
[  183.137959][ T5876]  dump_stack_lvl+0x168/0x230
[  183.137994][ T5876]  ? show_regs_print_info+0x20/0x20
[  183.138031][ T5876]  ? load_image+0x3b0/0x3b0
[  183.138064][ T5876]  sysfs_create_dir_ns+0x252/0x280
[  183.138090][ T5876]  ? __lock_acquire+0x7c60/0x7c60
[  183.138116][ T5876]  ? sysfs_warn_dup+0xa0/0xa0
[  183.138143][ T5876]  ? do_raw_spin_unlock+0x11d/0x230
[  183.138167][ T5876]  kobject_add_internal+0x662/0xd00
[  183.206309][ T5876]  kobject_init_and_add+0x122/0x190
[  183.212332][ T5876]  ? lockdep_softirqs_off+0x420/0x420
[  183.219460][ T5876]  ? kobject_add+0x210/0x210
[  183.224639][ T5876]  ? __init_swait_queue_head+0xa5/0x150
[  183.231437][ T5876]  gfs2_sys_fs_add+0x234/0x480
[  183.237585][ T5876]  ? gfs2_recover_set+0x240/0x240
[  183.243420][ T5876]  ? snprintf+0xd7/0x120
[  183.248383][ T5876]  ? __free_pages+0x95/0x1a0
[  183.253929][ T5876]  ? vscnprintf+0x80/0x80
[  183.259457][ T5876]  gfs2_fill_super+0x128d/0x1f50
[  183.267311][ T5876]  ? gfs2_reconfigure+0xcd0/0xcd0
[  183.273759][ T5876]  ? preempt_count_add+0x8d/0x190
[  183.280887][ T5876]  ? sb_set_blocksize+0xa5/0xe0
[  183.286710][ T5872] syz.1.93 (5872): drop_caches: 2
[  183.286737][ T5876]  get_tree_bdev+0x3f1/0x610
[  183.298290][ T5876]  ? gfs2_reconfigure+0xcd0/0xcd0
[  183.303686][ T5876]  gfs2_get_tree+0x4d/0x1e0
[  183.308331][ T5876]  vfs_get_tree+0x88/0x270
[  183.312811][ T5876]  do_new_mount+0x24a/0xa40
[  183.317923][ T5876]  __se_sys_mount+0x2d6/0x3c0
[  183.322804][ T5876]  ? __x64_sys_mount+0xc0/0xc0
[  183.328063][ T5876]  ? lockdep_hardirqs_on+0x94/0x140
[  183.333359][ T5876]  ? __x64_sys_mount+0x1c/0xc0
[  183.339230][ T5876]  do_syscall_64+0x4c/0xa0
[  183.343795][ T5876]  ? clear_bhb_loop+0x30/0x80
[  183.349881][ T5876]  ? clear_bhb_loop+0x30/0x80
[  183.354829][ T5876]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  183.361141][ T5876] RIP: 0033:0x7f693264eefa
[  183.366522][ T5876] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  183.385783][ T5874] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  183.387674][ T5876] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  183.411820][ T5876] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  183.420796][ T5876] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  183.429338][ T5876] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  183.438257][ T5876] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  183.439415][ T5878] loop4: detected capacity change from 0 to 32768
[  183.446437][ T5876] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  183.462791][ T5876]  </TASK>
[  183.519052][ T5874] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  183.649054][ T5878] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  183.749476][ T5878] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  183.805051][ T5878] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  184.060400][ T5878] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
2025/11/20 09:00:44 executed programs: 95
[  184.112718][ T5878] syz.4.97 (5878): drop_caches: 2
[  184.218276][ T5876] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  184.254144][ T5880] loop3: detected capacity change from 0 to 32768
[  184.277922][ T5876] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  184.335397][ T5880] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  184.368369][ T5880] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  184.434871][ T5880] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  184.731114][ T5880] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  184.809159][ T5880] syz.3.98 (5880): drop_caches: 2
[  185.084945][ T5882] loop1: detected capacity change from 0 to 32768
[  185.146223][ T5882] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  185.198646][ T5882] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  185.248965][ T5882] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  185.468980][ T5882] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  185.539490][ T5882] syz.1.99 (5882): drop_caches: 2
[  185.603780][ T5884] loop0: detected capacity change from 0 to 32768
[  185.641303][ T5884] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  185.688147][ T5884] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  185.760234][ T5884] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  185.802111][ T5886] loop4: detected capacity change from 0 to 32768
[  185.865779][ T5886] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  185.914487][ T5886] CPU: 0 PID: 5886 Comm: syz.4.101 Not tainted syzkaller #0
[  185.922431][ T5886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  185.932617][ T5886] Call Trace:
[  185.935989][ T5886]  <TASK>
[  185.939045][ T5886]  dump_stack_lvl+0x168/0x230
[  185.944117][ T5886]  ? show_regs_print_info+0x20/0x20
[  185.949365][ T5886]  ? load_image+0x3b0/0x3b0
[  185.953932][ T5886]  sysfs_create_dir_ns+0x252/0x280
[  185.959548][ T5886]  ? __lock_acquire+0x7c60/0x7c60
[  185.964715][ T5886]  ? sysfs_warn_dup+0xa0/0xa0
[  185.969445][ T5886]  ? do_raw_spin_unlock+0x11d/0x230
[  185.974863][ T5886]  kobject_add_internal+0x662/0xd00
[  185.980197][ T5886]  kobject_init_and_add+0x122/0x190
[  185.985429][ T5886]  ? lockdep_softirqs_off+0x420/0x420
[  185.991851][ T5886]  ? kobject_add+0x210/0x210
[  185.997048][ T5886]  ? __init_swait_queue_head+0xa5/0x150
[  186.002651][ T5886]  gfs2_sys_fs_add+0x234/0x480
[  186.007645][ T5886]  ? gfs2_recover_set+0x240/0x240
[  186.012921][ T5886]  ? snprintf+0xd7/0x120
[  186.018082][ T5886]  ? __free_pages+0x95/0x1a0
[  186.022781][ T5886]  ? vscnprintf+0x80/0x80
[  186.027333][ T5886]  gfs2_fill_super+0x128d/0x1f50
[  186.032896][ T5886]  ? gfs2_reconfigure+0xcd0/0xcd0
[  186.038486][ T5886]  ? preempt_count_add+0x8d/0x190
[  186.043665][ T5886]  ? sb_set_blocksize+0xa5/0xe0
[  186.048703][ T5886]  get_tree_bdev+0x3f1/0x610
[  186.053383][ T5886]  ? gfs2_reconfigure+0xcd0/0xcd0
[  186.058456][ T5886]  gfs2_get_tree+0x4d/0x1e0
[  186.063122][ T5886]  vfs_get_tree+0x88/0x270
[  186.067671][ T5886]  do_new_mount+0x24a/0xa40
[  186.072664][ T5886]  __se_sys_mount+0x2d6/0x3c0
[  186.077633][ T5886]  ? __x64_sys_mount+0xc0/0xc0
[  186.082620][ T5886]  ? lockdep_hardirqs_on+0x94/0x140
[  186.088717][ T5886]  ? __x64_sys_mount+0x1c/0xc0
[  186.093863][ T5886]  do_syscall_64+0x4c/0xa0
[  186.098683][ T5886]  ? clear_bhb_loop+0x30/0x80
[  186.103575][ T5886]  ? clear_bhb_loop+0x30/0x80
[  186.108545][ T5886]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  186.115003][ T5886] RIP: 0033:0x7f7b6e11defa
[  186.119569][ T5886] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  186.139890][ T5886] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  186.148348][ T5886] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  186.156360][ T5886] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  186.164546][ T5886] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  186.172785][ T5886] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  186.181022][ T5886] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  186.189116][ T5886]  </TASK>
[  186.215549][ T5886] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  186.279534][ T5884] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  186.297920][ T5886] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  186.323638][ T5888] loop2: detected capacity change from 0 to 32768
[  186.357500][ T5886] syz.4.101 (5886): drop_caches: 2
[  186.365726][ T5884] syz.0.100 (5884): drop_caches: 2
[  186.456966][ T5890] loop3: detected capacity change from 0 to 32768
[  186.532608][ T5890] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  186.542318][ T5888] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  186.570830][ T5888] CPU: 0 PID: 5888 Comm: syz.2.102 Not tainted syzkaller #0
[  186.578292][ T5888] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  186.589020][ T5888] Call Trace:
[  186.592417][ T5888]  <TASK>
[  186.595469][ T5888]  dump_stack_lvl+0x168/0x230
[  186.600415][ T5888]  ? show_regs_print_info+0x20/0x20
[  186.606109][ T5888]  ? load_image+0x3b0/0x3b0
[  186.611179][ T5888]  sysfs_create_dir_ns+0x252/0x280
[  186.616447][ T5888]  ? __lock_acquire+0x7c60/0x7c60
[  186.621584][ T5888]  ? sysfs_warn_dup+0xa0/0xa0
[  186.626399][ T5888]  ? do_raw_spin_unlock+0x11d/0x230
[  186.631880][ T5888]  kobject_add_internal+0x662/0xd00
[  186.637124][ T5888]  kobject_init_and_add+0x122/0x190
[  186.642355][ T5888]  ? lockdep_softirqs_off+0x420/0x420
[  186.647980][ T5888]  ? kobject_add+0x210/0x210
[  186.652681][ T5888]  ? __init_swait_queue_head+0xa5/0x150
[  186.658251][ T5888]  gfs2_sys_fs_add+0x234/0x480
[  186.663044][ T5888]  ? gfs2_recover_set+0x240/0x240
[  186.668110][ T5888]  ? snprintf+0xd7/0x120
[  186.672379][ T5888]  ? __free_pages+0x95/0x1a0
[  186.677065][ T5888]  ? vscnprintf+0x80/0x80
[  186.681593][ T5888]  gfs2_fill_super+0x128d/0x1f50
[  186.686649][ T5888]  ? gfs2_reconfigure+0xcd0/0xcd0
[  186.691994][ T5888]  ? preempt_count_add+0x8d/0x190
[  186.697156][ T5888]  ? sb_set_blocksize+0xa5/0xe0
[  186.702318][ T5888]  get_tree_bdev+0x3f1/0x610
[  186.707341][ T5888]  ? gfs2_reconfigure+0xcd0/0xcd0
[  186.712672][ T5888]  gfs2_get_tree+0x4d/0x1e0
[  186.717391][ T5888]  vfs_get_tree+0x88/0x270
[  186.721913][ T5888]  do_new_mount+0x24a/0xa40
[  186.726734][ T5888]  __se_sys_mount+0x2d6/0x3c0
[  186.731615][ T5888]  ? __x64_sys_mount+0xc0/0xc0
[  186.737655][ T5888]  ? lockdep_hardirqs_on+0x94/0x140
[  186.743057][ T5888]  ? __x64_sys_mount+0x1c/0xc0
[  186.747943][ T5888]  do_syscall_64+0x4c/0xa0
[  186.752550][ T5888]  ? clear_bhb_loop+0x30/0x80
[  186.757256][ T5888]  ? clear_bhb_loop+0x30/0x80
[  186.762155][ T5888]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  186.768466][ T5888] RIP: 0033:0x7f693264eefa
[  186.773044][ T5888] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  186.793706][ T5888] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  186.802498][ T5888] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  186.810491][ T5888] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  186.818582][ T5888] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  186.826577][ T5888] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  186.834910][ T5888] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  186.842932][ T5888]  </TASK>
[  186.871546][ T5890] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  186.932677][ T5890] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  187.172800][ T5890] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  187.178261][ T5888] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  187.251461][ T5890] syz.3.103 (5890): drop_caches: 2
[  187.260843][ T5888] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  187.314491][ T5888] syz.2.102 (5888): drop_caches: 2
[  187.481157][ T5892] loop1: detected capacity change from 0 to 32768
[  187.610119][ T5892] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  187.663294][ T5892] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  187.764086][ T5892] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  188.097133][ T5894] loop4: detected capacity change from 0 to 32768
[  188.158851][ T5894] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  188.181361][ T5892] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  188.192062][ T5894] CPU: 1 PID: 5894 Comm: syz.4.105 Not tainted syzkaller #0
[  188.199876][ T5894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  188.210139][ T5894] Call Trace:
[  188.213545][ T5894]  <TASK>
[  188.216504][ T5894]  dump_stack_lvl+0x168/0x230
[  188.221412][ T5894]  ? show_regs_print_info+0x20/0x20
[  188.226747][ T5894]  ? load_image+0x3b0/0x3b0
[  188.231298][ T5894]  sysfs_create_dir_ns+0x252/0x280
[  188.236456][ T5894]  ? __lock_acquire+0x7c60/0x7c60
[  188.241640][ T5894]  ? sysfs_warn_dup+0xa0/0xa0
[  188.246563][ T5894]  ? do_raw_spin_unlock+0x11d/0x230
[  188.252071][ T5894]  kobject_add_internal+0x662/0xd00
[  188.257692][ T5894]  kobject_init_and_add+0x122/0x190
[  188.262931][ T5894]  ? lockdep_softirqs_off+0x420/0x420
[  188.268340][ T5894]  ? kobject_add+0x210/0x210
[  188.273068][ T5894]  ? __init_swait_queue_head+0xa5/0x150
[  188.278741][ T5894]  gfs2_sys_fs_add+0x234/0x480
[  188.283538][ T5894]  ? gfs2_recover_set+0x240/0x240
[  188.288691][ T5894]  ? snprintf+0xd7/0x120
[  188.292990][ T5894]  ? __free_pages+0x95/0x1a0
[  188.297780][ T5894]  ? vscnprintf+0x80/0x80
[  188.302876][ T5894]  gfs2_fill_super+0x128d/0x1f50
[  188.308487][ T5894]  ? gfs2_reconfigure+0xcd0/0xcd0
[  188.313727][ T5894]  ? preempt_count_add+0x8d/0x190
[  188.315252][ T5896] loop0: detected capacity change from 0 to 32768
[  188.319065][ T5894]  ? sb_set_blocksize+0xa5/0xe0
[  188.319098][ T5894]  get_tree_bdev+0x3f1/0x610
[  188.319123][ T5894]  ? gfs2_reconfigure+0xcd0/0xcd0
[  188.341355][ T5894]  gfs2_get_tree+0x4d/0x1e0
[  188.346286][ T5894]  vfs_get_tree+0x88/0x270
[  188.350998][ T5894]  do_new_mount+0x24a/0xa40
[  188.355800][ T5894]  __se_sys_mount+0x2d6/0x3c0
[  188.360622][ T5894]  ? __x64_sys_mount+0xc0/0xc0
[  188.366122][ T5894]  ? lockdep_hardirqs_on+0x94/0x140
[  188.371839][ T5894]  ? __x64_sys_mount+0x1c/0xc0
[  188.376758][ T5894]  do_syscall_64+0x4c/0xa0
[  188.381235][ T5894]  ? clear_bhb_loop+0x30/0x80
[  188.386646][ T5894]  ? clear_bhb_loop+0x30/0x80
[  188.391459][ T5894]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  188.397701][ T5894] RIP: 0033:0x7f7b6e11defa
[  188.402174][ T5894] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  188.422735][ T5894] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  188.431661][ T5894] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  188.440160][ T5894] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  188.448710][ T5894] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  188.456806][ T5894] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  188.465492][ T5894] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  188.474151][ T5894]  </TASK>
[  188.489929][ T5894] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  188.505519][ T5894] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  188.527133][ T5892] syz.1.104 (5892): drop_caches: 2
[  188.544728][ T5896] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  188.556649][ T5894] syz.4.105 (5894): drop_caches: 2
[  188.598027][ T5896] CPU: 1 PID: 5896 Comm: syz.0.106 Not tainted syzkaller #0
[  188.606141][ T5896] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  188.616690][ T5896] Call Trace:
[  188.620270][ T5896]  <TASK>
[  188.623304][ T5896]  dump_stack_lvl+0x168/0x230
[  188.628361][ T5896]  ? show_regs_print_info+0x20/0x20
[  188.633782][ T5896]  ? load_image+0x3b0/0x3b0
[  188.638418][ T5896]  sysfs_create_dir_ns+0x252/0x280
[  188.643567][ T5896]  ? __lock_acquire+0x7c60/0x7c60
[  188.648854][ T5896]  ? sysfs_warn_dup+0xa0/0xa0
[  188.653832][ T5896]  ? do_raw_spin_unlock+0x11d/0x230
[  188.659172][ T5896]  kobject_add_internal+0x662/0xd00
[  188.664395][ T5896]  kobject_init_and_add+0x122/0x190
[  188.669608][ T5896]  ? lockdep_softirqs_off+0x420/0x420
[  188.675118][ T5896]  ? kobject_add+0x210/0x210
[  188.679797][ T5896]  ? __init_swait_queue_head+0xa5/0x150
[  188.685393][ T5896]  gfs2_sys_fs_add+0x234/0x480
[  188.690990][ T5896]  ? gfs2_recover_set+0x240/0x240
[  188.696027][ T5896]  ? snprintf+0xd7/0x120
[  188.700396][ T5896]  ? __free_pages+0x95/0x1a0
[  188.705115][ T5896]  ? vscnprintf+0x80/0x80
[  188.709474][ T5896]  gfs2_fill_super+0x128d/0x1f50
[  188.714476][ T5896]  ? gfs2_reconfigure+0xcd0/0xcd0
[  188.719529][ T5896]  ? preempt_count_add+0x8d/0x190
[  188.724579][ T5896]  ? sb_set_blocksize+0xa5/0xe0
[  188.729751][ T5896]  get_tree_bdev+0x3f1/0x610
[  188.734389][ T5896]  ? gfs2_reconfigure+0xcd0/0xcd0
[  188.739455][ T5896]  gfs2_get_tree+0x4d/0x1e0
[  188.744244][ T5896]  vfs_get_tree+0x88/0x270
[  188.748696][ T5896]  do_new_mount+0x24a/0xa40
[  188.753235][ T5896]  __se_sys_mount+0x2d6/0x3c0
[  188.757943][ T5896]  ? __x64_sys_mount+0xc0/0xc0
[  188.762773][ T5896]  ? lockdep_hardirqs_on+0x94/0x140
[  188.768335][ T5896]  ? __x64_sys_mount+0x1c/0xc0
[  188.773110][ T5896]  do_syscall_64+0x4c/0xa0
[  188.777676][ T5896]  ? clear_bhb_loop+0x30/0x80
[  188.782386][ T5896]  ? clear_bhb_loop+0x30/0x80
[  188.787286][ T5896]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  188.793778][ T5896] RIP: 0033:0x7f9435efdefa
[  188.798538][ T5896] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  188.819417][ T5896] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  188.827937][ T5896] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  188.836129][ T5896] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  188.844184][ T5896] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  188.852444][ T5896] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  188.860448][ T5896] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  188.868754][ T5896]  </TASK>
[  189.271319][ T5899] loop3: detected capacity change from 0 to 32768
[  189.316972][ T5899] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  189.356896][ T5899] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  189.398849][ T5899] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  189.545002][ T5900] loop2: detected capacity change from 0 to 32768
[  189.584056][ T5900] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  189.623748][ T5900] CPU: 1 PID: 5900 Comm: syz.2.108 Not tainted syzkaller #0
[  189.631199][ T5900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  189.637267][ T5899] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  189.641462][ T5900] Call Trace:
[  189.641472][ T5900]  <TASK>
[  189.641481][ T5900]  dump_stack_lvl+0x168/0x230
[  189.641516][ T5900]  ? show_regs_print_info+0x20/0x20
[  189.665801][ T5900]  ? load_image+0x3b0/0x3b0
[  189.670378][ T5900]  sysfs_create_dir_ns+0x252/0x280
[  189.675545][ T5900]  ? __lock_acquire+0x7c60/0x7c60
[  189.680622][ T5900]  ? sysfs_warn_dup+0xa0/0xa0
[  189.685500][ T5900]  ? do_raw_spin_unlock+0x11d/0x230
[  189.690763][ T5900]  kobject_add_internal+0x662/0xd00
[  189.696069][ T5900]  kobject_init_and_add+0x122/0x190
[  189.701577][ T5900]  ? lockdep_softirqs_off+0x420/0x420
[  189.707008][ T5900]  ? kobject_add+0x210/0x210
[  189.711951][ T5900]  ? __init_swait_queue_head+0xa5/0x150
[  189.717564][ T5900]  gfs2_sys_fs_add+0x234/0x480
[  189.722505][ T5900]  ? gfs2_recover_set+0x240/0x240
[  189.727579][ T5900]  ? snprintf+0xd7/0x120
[  189.732030][ T5900]  ? __free_pages+0x95/0x1a0
[  189.736683][ T5900]  ? vscnprintf+0x80/0x80
[  189.741170][ T5900]  gfs2_fill_super+0x128d/0x1f50
[  189.746528][ T5900]  ? gfs2_reconfigure+0xcd0/0xcd0
[  189.751695][ T5900]  ? preempt_count_add+0x8d/0x190
[  189.756806][ T5900]  ? sb_set_blocksize+0xa5/0xe0
[  189.762034][ T5900]  get_tree_bdev+0x3f1/0x610
[  189.766757][ T5900]  ? gfs2_reconfigure+0xcd0/0xcd0
[  189.772067][ T5900]  gfs2_get_tree+0x4d/0x1e0
[  189.776627][ T5900]  vfs_get_tree+0x88/0x270
[  189.781360][ T5900]  do_new_mount+0x24a/0xa40
[  189.786075][ T5900]  __se_sys_mount+0x2d6/0x3c0
[  189.791335][ T5900]  ? __x64_sys_mount+0xc0/0xc0
[  189.797289][ T5900]  ? lockdep_hardirqs_on+0x94/0x140
[  189.803438][ T5900]  ? __x64_sys_mount+0x1c/0xc0
[  189.808420][ T5900]  do_syscall_64+0x4c/0xa0
[  189.813181][ T5900]  ? clear_bhb_loop+0x30/0x80
[  189.817998][ T5900]  ? clear_bhb_loop+0x30/0x80
[  189.822908][ T5900]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  189.828937][ T5900] RIP: 0033:0x7f693264eefa
[  189.833483][ T5900] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  189.853561][ T5900] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  189.862018][ T5900] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  189.871167][ T5900] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  189.879569][ T5900] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  189.887962][ T5900] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  189.897271][ T5900] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  189.905871][ T5900]  </TASK>
[  189.945693][ T5899] syz.3.107 (5899): drop_caches: 2
[  189.992770][ T5896] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
2025/11/20 09:00:50 executed programs: 106
[  190.047492][ T5896] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  190.073507][ T5900] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  190.095576][ T5900] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  190.295473][ T5902] loop4: detected capacity change from 0 to 32768
[  190.341189][ T5902] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  190.377973][ T5902] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  190.424345][ T5902] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  190.554187][ T5904] loop1: detected capacity change from 0 to 32768
[  190.673714][ T5904] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  190.689296][ T5902] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  190.720294][ T5904] CPU: 1 PID: 5904 Comm: syz.1.109 Not tainted syzkaller #0
[  190.727739][ T5904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  190.738609][ T5904] Call Trace:
[  190.741925][ T5904]  <TASK>
[  190.745070][ T5904]  dump_stack_lvl+0x168/0x230
[  190.749937][ T5904]  ? show_regs_print_info+0x20/0x20
[  190.755366][ T5904]  ? load_image+0x3b0/0x3b0
[  190.760278][ T5904]  sysfs_create_dir_ns+0x252/0x280
[  190.765815][ T5904]  ? __lock_acquire+0x7c60/0x7c60
[  190.771239][ T5904]  ? sysfs_warn_dup+0xa0/0xa0
[  190.776199][ T5904]  ? do_raw_spin_unlock+0x11d/0x230
[  190.781812][ T5904]  kobject_add_internal+0x662/0xd00
[  190.787249][ T5904]  kobject_init_and_add+0x122/0x190
[  190.792507][ T5904]  ? lockdep_softirqs_off+0x420/0x420
[  190.798199][ T5904]  ? kobject_add+0x210/0x210
[  190.800835][ T5902] syz.4.110 (5902): drop_caches: 2
[  190.803653][ T5904]  ? __init_swait_queue_head+0xa5/0x150
[  190.803689][ T5904]  gfs2_sys_fs_add+0x234/0x480
[  190.803732][ T5904]  ? gfs2_recover_set+0x240/0x240
[  190.803754][ T5904]  ? snprintf+0xd7/0x120
[  190.803777][ T5904]  ? __free_pages+0x95/0x1a0
[  190.803819][ T5904]  ? vscnprintf+0x80/0x80
[  190.803853][ T5904]  gfs2_fill_super+0x128d/0x1f50
[  190.843663][ T5904]  ? gfs2_reconfigure+0xcd0/0xcd0
[  190.849069][ T5904]  ? preempt_count_add+0x8d/0x190
[  190.854295][ T5904]  ? sb_set_blocksize+0xa5/0xe0
[  190.859215][ T5904]  get_tree_bdev+0x3f1/0x610
[  190.864017][ T5904]  ? gfs2_reconfigure+0xcd0/0xcd0
[  190.869185][ T5904]  gfs2_get_tree+0x4d/0x1e0
[  190.873992][ T5904]  vfs_get_tree+0x88/0x270
[  190.878456][ T5904]  do_new_mount+0x24a/0xa40
[  190.883201][ T5904]  __se_sys_mount+0x2d6/0x3c0
[  190.888092][ T5904]  ? __x64_sys_mount+0xc0/0xc0
[  190.892972][ T5904]  ? lockdep_hardirqs_on+0x94/0x140
[  190.898290][ T5904]  ? __x64_sys_mount+0x1c/0xc0
[  190.903514][ T5904]  do_syscall_64+0x4c/0xa0
[  190.908335][ T5904]  ? clear_bhb_loop+0x30/0x80
[  190.913428][ T5904]  ? clear_bhb_loop+0x30/0x80
[  190.918157][ T5904]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  190.924114][ T5904] RIP: 0033:0x7f049eb23efa
[  190.928572][ T5904] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  190.948399][ T5904] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  190.956952][ T5904] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  190.965065][ T5904] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  190.973357][ T5904] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  190.981439][ T5904] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  190.989795][ T5904] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  190.998126][ T5904]  </TASK>
[  191.534313][ T5908] loop0: detected capacity change from 0 to 32768
[  191.567708][ T5908] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  191.595583][ T5908] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  191.637111][ T5908] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  191.688104][ T5904] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  191.709778][ T5910] loop2: detected capacity change from 0 to 32768
[  191.746698][ T5910] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  191.753730][ T5904] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  191.784501][ T5910] CPU: 1 PID: 5910 Comm: syz.2.113 Not tainted syzkaller #0
[  191.792259][ T5910] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  191.802804][ T5910] Call Trace:
[  191.806117][ T5910]  <TASK>
[  191.809272][ T5910]  dump_stack_lvl+0x168/0x230
[  191.814103][ T5910]  ? show_regs_print_info+0x20/0x20
[  191.819647][ T5910]  ? load_image+0x3b0/0x3b0
[  191.824203][ T5910]  sysfs_create_dir_ns+0x252/0x280
[  191.829591][ T5910]  ? __lock_acquire+0x7c60/0x7c60
[  191.834783][ T5910]  ? sysfs_warn_dup+0xa0/0xa0
[  191.839547][ T5910]  ? do_raw_spin_unlock+0x11d/0x230
[  191.844885][ T5910]  kobject_add_internal+0x662/0xd00
[  191.850226][ T5910]  kobject_init_and_add+0x122/0x190
[  191.855465][ T5910]  ? lockdep_softirqs_off+0x420/0x420
[  191.861332][ T5910]  ? kobject_add+0x210/0x210
[  191.866190][ T5910]  ? __init_swait_queue_head+0xa5/0x150
[  191.872067][ T5910]  gfs2_sys_fs_add+0x234/0x480
[  191.877467][ T5910]  ? gfs2_recover_set+0x240/0x240
[  191.882630][ T5910]  ? snprintf+0xd7/0x120
[  191.887023][ T5910]  ? __free_pages+0x95/0x1a0
[  191.891665][ T5910]  ? vscnprintf+0x80/0x80
[  191.896152][ T5910]  gfs2_fill_super+0x128d/0x1f50
[  191.901672][ T5910]  ? gfs2_reconfigure+0xcd0/0xcd0
[  191.906931][ T5910]  ? preempt_count_add+0x8d/0x190
[  191.912012][ T5910]  ? sb_set_blocksize+0xa5/0xe0
[  191.916995][ T5910]  get_tree_bdev+0x3f1/0x610
[  191.918427][ T5908] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  191.921919][ T5910]  ? gfs2_reconfigure+0xcd0/0xcd0
[  191.921959][ T5910]  gfs2_get_tree+0x4d/0x1e0
[  191.940959][ T5910]  vfs_get_tree+0x88/0x270
[  191.945430][ T5910]  do_new_mount+0x24a/0xa40
[  191.949992][ T5910]  __se_sys_mount+0x2d6/0x3c0
[  191.954815][ T5910]  ? __x64_sys_mount+0xc0/0xc0
[  191.959794][ T5910]  ? lockdep_hardirqs_on+0x94/0x140
[  191.965128][ T5910]  ? __x64_sys_mount+0x1c/0xc0
[  191.970023][ T5910]  do_syscall_64+0x4c/0xa0
[  191.974568][ T5910]  ? clear_bhb_loop+0x30/0x80
[  191.979291][ T5910]  ? clear_bhb_loop+0x30/0x80
[  191.984191][ T5910]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  191.990585][ T5910] RIP: 0033:0x7f693264eefa
[  191.995288][ T5910] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  192.004450][ T5908] syz.0.112 (5908): drop_caches: 2
[  192.015447][ T5910] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  192.015481][ T5910] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  192.015508][ T5910] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  192.015522][ T5910] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  192.015537][ T5910] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  192.015550][ T5910] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  192.015581][ T5910]  </TASK>
[  192.087835][ T5910] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  192.107026][ T5910] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  192.179858][ T5906] loop3: detected capacity change from 0 to 32768
[  192.235029][ T5906] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  192.275252][ T5906] CPU: 0 PID: 5906 Comm: syz.3.111 Not tainted syzkaller #0
[  192.282927][ T5906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  192.293380][ T5906] Call Trace:
[  192.296692][ T5906]  <TASK>
[  192.299650][ T5906]  dump_stack_lvl+0x168/0x230
[  192.304387][ T5906]  ? show_regs_print_info+0x20/0x20
[  192.309724][ T5906]  ? load_image+0x3b0/0x3b0
[  192.314321][ T5906]  sysfs_create_dir_ns+0x252/0x280
[  192.319575][ T5906]  ? __lock_acquire+0x7c60/0x7c60
[  192.324824][ T5906]  ? sysfs_warn_dup+0xa0/0xa0
[  192.329598][ T5906]  ? do_raw_spin_unlock+0x11d/0x230
[  192.335185][ T5906]  kobject_add_internal+0x662/0xd00
[  192.340571][ T5906]  kobject_init_and_add+0x122/0x190
[  192.345930][ T5906]  ? lockdep_softirqs_off+0x420/0x420
[  192.351359][ T5906]  ? kobject_add+0x210/0x210
[  192.356086][ T5906]  ? __init_swait_queue_head+0xa5/0x150
[  192.361684][ T5906]  gfs2_sys_fs_add+0x234/0x480
[  192.366490][ T5906]  ? gfs2_recover_set+0x240/0x240
[  192.371643][ T5906]  ? snprintf+0xd7/0x120
[  192.376031][ T5906]  ? __free_pages+0x95/0x1a0
[  192.380780][ T5906]  ? vscnprintf+0x80/0x80
[  192.385170][ T5906]  gfs2_fill_super+0x128d/0x1f50
[  192.390367][ T5906]  ? gfs2_reconfigure+0xcd0/0xcd0
[  192.395600][ T5906]  ? preempt_count_add+0x8d/0x190
[  192.401122][ T5906]  ? sb_set_blocksize+0xa5/0xe0
[  192.406112][ T5906]  get_tree_bdev+0x3f1/0x610
[  192.411215][ T5906]  ? gfs2_reconfigure+0xcd0/0xcd0
[  192.416353][ T5906]  gfs2_get_tree+0x4d/0x1e0
[  192.421009][ T5906]  vfs_get_tree+0x88/0x270
[  192.425559][ T5906]  do_new_mount+0x24a/0xa40
[  192.430110][ T5906]  __se_sys_mount+0x2d6/0x3c0
[  192.434837][ T5906]  ? __x64_sys_mount+0xc0/0xc0
[  192.439644][ T5906]  ? lockdep_hardirqs_on+0x94/0x140
[  192.444964][ T5906]  ? __x64_sys_mount+0x1c/0xc0
[  192.449882][ T5906]  do_syscall_64+0x4c/0xa0
[  192.454477][ T5906]  ? clear_bhb_loop+0x30/0x80
[  192.459280][ T5906]  ? clear_bhb_loop+0x30/0x80
[  192.464309][ T5906]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  192.470956][ T5906] RIP: 0033:0x7fa866a5befa
[  192.475700][ T5906] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  192.496147][ T5906] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  192.504724][ T5906] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  192.513000][ T5906] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  192.521095][ T5906] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  192.529257][ T5906] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  192.537862][ T5906] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  192.546621][ T5906]  </TASK>
[  192.699786][ T5912] loop4: detected capacity change from 0 to 32768
[  192.746531][ T5912] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  192.764413][ T5910] syz.2.113 (5910): drop_caches: 2
[  192.777950][ T5912] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  192.822017][ T5912] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  193.060432][ T5906] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  193.078119][ T5912] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  193.097006][ T5906] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  193.134848][ T5912] syz.4.114 (5912): drop_caches: 2
[  193.595731][ T5914] loop0: detected capacity change from 0 to 32768
[  193.706298][ T5914] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  193.747952][ T5914] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  193.811553][ T5914] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  193.891110][ T5916] loop1: detected capacity change from 0 to 32768
[  193.944541][ T5916] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  193.991624][ T5916] CPU: 1 PID: 5916 Comm: syz.1.116 Not tainted syzkaller #0
[  193.998992][ T5916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  194.009186][ T5916] Call Trace:
[  194.012497][ T5916]  <TASK>
[  194.015721][ T5916]  dump_stack_lvl+0x168/0x230
[  194.020881][ T5916]  ? show_regs_print_info+0x20/0x20
[  194.026349][ T5916]  ? load_image+0x3b0/0x3b0
[  194.031598][ T5916]  sysfs_create_dir_ns+0x252/0x280
[  194.037738][ T5916]  ? __lock_acquire+0x7c60/0x7c60
[  194.043162][ T5916]  ? sysfs_warn_dup+0xa0/0xa0
[  194.048251][ T5916]  ? do_raw_spin_unlock+0x11d/0x230
[  194.053833][ T5916]  kobject_add_internal+0x662/0xd00
[  194.059094][ T5916]  kobject_init_and_add+0x122/0x190
[  194.064540][ T5916]  ? lockdep_softirqs_off+0x420/0x420
[  194.070398][ T5916]  ? kobject_add+0x210/0x210
[  194.075036][ T5916]  ? __init_swait_queue_head+0xa5/0x150
[  194.081113][ T5916]  gfs2_sys_fs_add+0x234/0x480
[  194.086460][ T5916]  ? gfs2_recover_set+0x240/0x240
[  194.092430][ T5918] loop2: detected capacity change from 0 to 32768
[  194.093734][ T5916]  ? snprintf+0xd7/0x120
[  194.105483][ T5916]  ? __free_pages+0x95/0x1a0
[  194.110994][ T5916]  ? vscnprintf+0x80/0x80
[  194.115908][ T5916]  gfs2_fill_super+0x128d/0x1f50
[  194.121186][ T5916]  ? gfs2_reconfigure+0xcd0/0xcd0
[  194.126514][ T5916]  ? preempt_count_add+0x8d/0x190
[  194.131596][ T5916]  ? sb_set_blocksize+0xa5/0xe0
[  194.136595][ T5916]  get_tree_bdev+0x3f1/0x610
[  194.141353][ T5916]  ? gfs2_reconfigure+0xcd0/0xcd0
[  194.146516][ T5916]  gfs2_get_tree+0x4d/0x1e0
[  194.151074][ T5916]  vfs_get_tree+0x88/0x270
[  194.155541][ T5916]  do_new_mount+0x24a/0xa40
[  194.160297][ T5916]  __se_sys_mount+0x2d6/0x3c0
[  194.165141][ T5916]  ? __x64_sys_mount+0xc0/0xc0
[  194.170047][ T5916]  ? lockdep_hardirqs_on+0x94/0x140
[  194.175373][ T5916]  ? __x64_sys_mount+0x1c/0xc0
[  194.180276][ T5916]  do_syscall_64+0x4c/0xa0
[  194.184742][ T5916]  ? clear_bhb_loop+0x30/0x80
[  194.189541][ T5916]  ? clear_bhb_loop+0x30/0x80
[  194.194354][ T5916]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  194.200497][ T5916] RIP: 0033:0x7f049eb23efa
[  194.204941][ T5916] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  194.224877][ T5916] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  194.233327][ T5916] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  194.241590][ T5916] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  194.249723][ T5916] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  194.258487][ T5916] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  194.266685][ T5916] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  194.274949][ T5916]  </TASK>
[  194.298202][ T5918] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  194.303268][ T5916] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  194.336850][ T5914] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  194.344981][ T5918] CPU: 1 PID: 5918 Comm: syz.2.117 Not tainted syzkaller #0
[  194.352483][ T5918] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  194.362665][ T5918] Call Trace:
[  194.366107][ T5918]  <TASK>
[  194.369159][ T5918]  dump_stack_lvl+0x168/0x230
[  194.373967][ T5918]  ? show_regs_print_info+0x20/0x20
[  194.379323][ T5918]  ? load_image+0x3b0/0x3b0
[  194.384063][ T5918]  sysfs_create_dir_ns+0x252/0x280
[  194.390140][ T5918]  ? __lock_acquire+0x7c60/0x7c60
[  194.395828][ T5918]  ? sysfs_warn_dup+0xa0/0xa0
[  194.400567][ T5918]  ? do_raw_spin_unlock+0x11d/0x230
[  194.405898][ T5918]  kobject_add_internal+0x662/0xd00
[  194.411263][ T5918]  kobject_init_and_add+0x122/0x190
[  194.416596][ T5918]  ? lockdep_softirqs_off+0x420/0x420
[  194.422265][ T5918]  ? kobject_add+0x210/0x210
[  194.427244][ T5918]  ? __init_swait_queue_head+0xa5/0x150
[  194.433063][ T5918]  gfs2_sys_fs_add+0x234/0x480
[  194.438049][ T5918]  ? gfs2_recover_set+0x240/0x240
[  194.443402][ T5918]  ? snprintf+0xd7/0x120
[  194.447703][ T5918]  ? __free_pages+0x95/0x1a0
[  194.452528][ T5918]  ? vscnprintf+0x80/0x80
[  194.457001][ T5918]  gfs2_fill_super+0x128d/0x1f50
[  194.462194][ T5918]  ? gfs2_reconfigure+0xcd0/0xcd0
[  194.467312][ T5918]  ? preempt_count_add+0x8d/0x190
[  194.472431][ T5918]  ? sb_set_blocksize+0xa5/0xe0
[  194.477345][ T5918]  get_tree_bdev+0x3f1/0x610
[  194.482204][ T5918]  ? gfs2_reconfigure+0xcd0/0xcd0
[  194.487970][ T5918]  gfs2_get_tree+0x4d/0x1e0
[  194.493235][ T5918]  vfs_get_tree+0x88/0x270
[  194.498168][ T5918]  do_new_mount+0x24a/0xa40
[  194.502996][ T5918]  __se_sys_mount+0x2d6/0x3c0
[  194.503588][ T1422] ieee802154 phy0 wpan0: encryption failed: -22
[  194.507900][ T5918]  ? __x64_sys_mount+0xc0/0xc0
[  194.507932][ T5918]  ? lockdep_hardirqs_on+0x94/0x140
[  194.515165][ T1422] ieee802154 phy1 wpan1: encryption failed: -22
[  194.520478][ T5918]  ? __x64_sys_mount+0x1c/0xc0
[  194.520507][ T5918]  do_syscall_64+0x4c/0xa0
[  194.520528][ T5918]  ? clear_bhb_loop+0x30/0x80
[  194.547350][ T5918]  ? clear_bhb_loop+0x30/0x80
[  194.552350][ T5918]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  194.558384][ T5918] RIP: 0033:0x7f693264eefa
[  194.562969][ T5918] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  194.583249][ T5918] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  194.591889][ T5918] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  194.599897][ T5918] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  194.608003][ T5918] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  194.616123][ T5918] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  194.625030][ T5918] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  194.633245][ T5918]  </TASK>
[  194.641741][ T5916] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  194.652563][ T5918] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  194.666911][ T5918] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  194.699952][ T5914] syz.0.115 (5914): drop_caches: 2
[  194.859610][ T5920] loop4: detected capacity change from 0 to 32768
[  194.935731][ T5920] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  194.976055][ T5920] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  195.020790][ T5920] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  195.048998][ T5916] syz.1.116 (5916): drop_caches: 2
[  195.091918][ T5922] loop3: detected capacity change from 0 to 32768
2025/11/20 09:00:55 executed programs: 116
[  195.202195][ T5922] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  195.235877][ T5918] syz.2.117 (5918): drop_caches: 2
[  195.253379][ T5922] CPU: 1 PID: 5922 Comm: syz.3.119 Not tainted syzkaller #0
[  195.260742][ T5922] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  195.271347][ T5922] Call Trace:
[  195.274669][ T5922]  <TASK>
[  195.277636][ T5922]  dump_stack_lvl+0x168/0x230
[  195.282493][ T5922]  ? show_regs_print_info+0x20/0x20
[  195.287831][ T5922]  ? load_image+0x3b0/0x3b0
[  195.292394][ T5922]  sysfs_create_dir_ns+0x252/0x280
[  195.297571][ T5922]  ? __lock_acquire+0x7c60/0x7c60
[  195.302756][ T5922]  ? sysfs_warn_dup+0xa0/0xa0
[  195.307486][ T5922]  ? do_raw_spin_unlock+0x11d/0x230
[  195.312919][ T5922]  kobject_add_internal+0x662/0xd00
[  195.318187][ T5922]  kobject_init_and_add+0x122/0x190
[  195.323549][ T5922]  ? lockdep_softirqs_off+0x420/0x420
[  195.329369][ T5922]  ? kobject_add+0x210/0x210
[  195.334098][ T5922]  ? __init_swait_queue_head+0xa5/0x150
[  195.339787][ T5922]  gfs2_sys_fs_add+0x234/0x480
[  195.344596][ T5922]  ? gfs2_recover_set+0x240/0x240
[  195.345406][ T5920] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  195.349879][ T5922]  ? snprintf+0xd7/0x120
[  195.349908][ T5922]  ? __free_pages+0x95/0x1a0
[  195.366871][ T5922]  ? vscnprintf+0x80/0x80
[  195.371256][ T5922]  gfs2_fill_super+0x128d/0x1f50
[  195.376261][ T5922]  ? gfs2_reconfigure+0xcd0/0xcd0
[  195.381335][ T5922]  ? preempt_count_add+0x8d/0x190
[  195.386427][ T5922]  ? sb_set_blocksize+0xa5/0xe0
[  195.391785][ T5922]  get_tree_bdev+0x3f1/0x610
[  195.396423][ T5922]  ? gfs2_reconfigure+0xcd0/0xcd0
[  195.401527][ T5922]  gfs2_get_tree+0x4d/0x1e0
[  195.406179][ T5922]  vfs_get_tree+0x88/0x270
[  195.410719][ T5922]  do_new_mount+0x24a/0xa40
[  195.415365][ T5922]  __se_sys_mount+0x2d6/0x3c0
[  195.420093][ T5922]  ? __x64_sys_mount+0xc0/0xc0
[  195.424907][ T5922]  ? lockdep_hardirqs_on+0x94/0x140
[  195.430285][ T5922]  ? __x64_sys_mount+0x1c/0xc0
[  195.435248][ T5922]  do_syscall_64+0x4c/0xa0
[  195.439785][ T5922]  ? clear_bhb_loop+0x30/0x80
[  195.444597][ T5922]  ? clear_bhb_loop+0x30/0x80
[  195.449583][ T5922]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  195.455943][ T5922] RIP: 0033:0x7fa866a5befa
[  195.460432][ T5922] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  195.480085][ T5922] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  195.489001][ T5922] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  195.497400][ T5922] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  195.505667][ T5922] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  195.513763][ T5922] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  195.516070][ T5920] syz.4.118 (5920): drop_caches: 2
[  195.522073][ T5922] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  195.522106][ T5922]  </TASK>
[  195.689696][ T5922] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  195.703998][ T5922] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  195.716200][ T5922] syz.3.119 (5922): drop_caches: 2
[  196.291165][ T5924] loop0: detected capacity change from 0 to 32768
[  196.348410][ T5924] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  196.394424][ T5924] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  196.447835][ T5924] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  196.610572][ T5926] loop1: detected capacity change from 0 to 32768
[  196.641447][ T5924] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  196.688859][ T5926] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  196.718759][ T5926] CPU: 0 PID: 5926 Comm: syz.1.121 Not tainted syzkaller #0
[  196.727519][ T5926] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  196.741020][ T5926] Call Trace:
[  196.744695][ T5926]  <TASK>
[  196.748050][ T5926]  dump_stack_lvl+0x168/0x230
[  196.753322][ T5926]  ? show_regs_print_info+0x20/0x20
[  196.759298][ T5926]  ? load_image+0x3b0/0x3b0
[  196.765006][ T5926]  sysfs_create_dir_ns+0x252/0x280
[  196.771169][ T5926]  ? __lock_acquire+0x7c60/0x7c60
[  196.778377][ T5926]  ? sysfs_warn_dup+0xa0/0xa0
[  196.783480][ T5926]  ? do_raw_spin_unlock+0x11d/0x230
[  196.789415][ T5926]  kobject_add_internal+0x662/0xd00
[  196.795017][ T5926]  kobject_init_and_add+0x122/0x190
[  196.800862][ T5926]  ? lockdep_softirqs_off+0x420/0x420
[  196.808327][ T5926]  ? kobject_add+0x210/0x210
[  196.813577][ T5926]  ? __init_swait_queue_head+0xa5/0x150
[  196.820487][ T5926]  gfs2_sys_fs_add+0x234/0x480
[  196.825722][ T5926]  ? gfs2_recover_set+0x240/0x240
[  196.832384][ T5926]  ? snprintf+0xd7/0x120
[  196.837580][ T5926]  ? __free_pages+0x95/0x1a0
[  196.842528][ T5926]  ? vscnprintf+0x80/0x80
[  196.847100][ T5926]  gfs2_fill_super+0x128d/0x1f50
[  196.852534][ T5926]  ? gfs2_reconfigure+0xcd0/0xcd0
[  196.857975][ T5926]  ? preempt_count_add+0x8d/0x190
[  196.863340][ T5926]  ? sb_set_blocksize+0xa5/0xe0
[  196.868437][ T5926]  get_tree_bdev+0x3f1/0x610
[  196.873659][ T5926]  ? gfs2_reconfigure+0xcd0/0xcd0
[  196.879455][ T5926]  gfs2_get_tree+0x4d/0x1e0
[  196.884620][ T5926]  vfs_get_tree+0x88/0x270
[  196.889474][ T5926]  do_new_mount+0x24a/0xa40
[  196.894899][ T5926]  __se_sys_mount+0x2d6/0x3c0
[  196.900756][ T5926]  ? __x64_sys_mount+0xc0/0xc0
[  196.905775][ T5926]  ? lockdep_hardirqs_on+0x94/0x140
[  196.911576][ T5926]  ? __x64_sys_mount+0x1c/0xc0
[  196.916484][ T5926]  do_syscall_64+0x4c/0xa0
[  196.921140][ T5926]  ? clear_bhb_loop+0x30/0x80
[  196.926402][ T5926]  ? clear_bhb_loop+0x30/0x80
[  196.931304][ T5926]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  196.938484][ T5926] RIP: 0033:0x7f049eb23efa
[  196.943664][ T5926] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  196.964230][ T5926] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  196.973384][ T5926] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  196.975553][ T5928] loop2: detected capacity change from 0 to 32768
[  196.982349][ T5926] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  196.982378][ T5926] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  196.982393][ T5926] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  196.982407][ T5926] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  196.982442][ T5926]  </TASK>
[  196.997786][ T5924] syz.0.120 (5924): drop_caches: 2
[  197.092383][ T5928] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  197.122154][ T5928] CPU: 0 PID: 5928 Comm: syz.2.122 Not tainted syzkaller #0
[  197.132939][ T5928] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  197.148087][ T5928] Call Trace:
[  197.151857][ T5928]  <TASK>
[  197.155415][ T5928]  dump_stack_lvl+0x168/0x230
[  197.160685][ T5928]  ? show_regs_print_info+0x20/0x20
[  197.166263][ T5928]  ? load_image+0x3b0/0x3b0
[  197.171850][ T5928]  sysfs_create_dir_ns+0x252/0x280
[  197.180953][ T5928]  ? __lock_acquire+0x7c60/0x7c60
[  197.187717][ T5928]  ? sysfs_warn_dup+0xa0/0xa0
[  197.193750][ T5928]  ? do_raw_spin_unlock+0x11d/0x230
[  197.201216][ T5928]  kobject_add_internal+0x662/0xd00
[  197.206678][ T5928]  kobject_init_and_add+0x122/0x190
[  197.212016][ T5928]  ? lockdep_softirqs_off+0x420/0x420
[  197.218147][ T5928]  ? kobject_add+0x210/0x210
[  197.223774][ T5928]  ? __init_swait_queue_head+0xa5/0x150
[  197.229751][ T5928]  gfs2_sys_fs_add+0x234/0x480
[  197.235359][ T5928]  ? gfs2_recover_set+0x240/0x240
[  197.240540][ T5928]  ? snprintf+0xd7/0x120
[  197.245386][ T5928]  ? __free_pages+0x95/0x1a0
[  197.250142][ T5928]  ? vscnprintf+0x80/0x80
[  197.254620][ T5928]  gfs2_fill_super+0x128d/0x1f50
[  197.260026][ T5928]  ? gfs2_reconfigure+0xcd0/0xcd0
[  197.265284][ T5928]  ? preempt_count_add+0x8d/0x190
[  197.271376][ T5928]  ? sb_set_blocksize+0xa5/0xe0
[  197.276685][ T5928]  get_tree_bdev+0x3f1/0x610
[  197.281435][ T5928]  ? gfs2_reconfigure+0xcd0/0xcd0
[  197.286628][ T5928]  gfs2_get_tree+0x4d/0x1e0
[  197.291470][ T5928]  vfs_get_tree+0x88/0x270
[  197.296895][ T5928]  do_new_mount+0x24a/0xa40
[  197.301765][ T5928]  __se_sys_mount+0x2d6/0x3c0
[  197.306516][ T5928]  ? __x64_sys_mount+0xc0/0xc0
[  197.311937][ T5928]  ? lockdep_hardirqs_on+0x94/0x140
[  197.317374][ T5928]  ? __x64_sys_mount+0x1c/0xc0
[  197.322165][ T5928]  do_syscall_64+0x4c/0xa0
[  197.326697][ T5928]  ? clear_bhb_loop+0x30/0x80
[  197.331398][ T5928]  ? clear_bhb_loop+0x30/0x80
[  197.336292][ T5928]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  197.343122][ T5928] RIP: 0033:0x7f693264eefa
[  197.349175][ T5928] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  197.369169][ T5928] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  197.379115][ T5928] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  197.387689][ T5928] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  197.396057][ T5928] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  197.404308][ T5928] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  197.412492][ T5928] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  197.420933][ T5928]  </TASK>
[  197.523657][ T5930] loop3: detected capacity change from 0 to 32768
[  197.592998][ T5930] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  197.623579][ T5930] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  197.674653][ T5930] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  197.720938][ T5932] loop4: detected capacity change from 0 to 32768
[  197.745035][ T5932] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  197.765270][ T5932] CPU: 0 PID: 5932 Comm: syz.4.123 Not tainted syzkaller #0
[  197.773824][ T5932] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  197.784577][ T5932] Call Trace:
[  197.788245][ T5932]  <TASK>
[  197.791297][ T5932]  dump_stack_lvl+0x168/0x230
[  197.796243][ T5932]  ? show_regs_print_info+0x20/0x20
[  197.801505][ T5932]  ? load_image+0x3b0/0x3b0
[  197.806477][ T5932]  sysfs_create_dir_ns+0x252/0x280
[  197.807828][ T5930] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  197.820611][ T5932]  ? __lock_acquire+0x7c60/0x7c60
[  197.820652][ T5932]  ? sysfs_warn_dup+0xa0/0xa0
[  197.820681][ T5932]  ? do_raw_spin_unlock+0x11d/0x230
[  197.820706][ T5932]  kobject_add_internal+0x662/0xd00
[  197.820736][ T5932]  kobject_init_and_add+0x122/0x190
[  197.847068][ T5932]  ? lockdep_softirqs_off+0x420/0x420
[  197.852750][ T5932]  ? kobject_add+0x210/0x210
[  197.858083][ T5932]  ? __init_swait_queue_head+0xa5/0x150
[  197.864362][ T5932]  gfs2_sys_fs_add+0x234/0x480
[  197.869838][ T5932]  ? gfs2_recover_set+0x240/0x240
[  197.875390][ T5932]  ? snprintf+0xd7/0x120
[  197.879395][ T5926] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  197.880289][ T5932]  ? __free_pages+0x95/0x1a0
[  197.894798][ T5926] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  197.899529][ T5932]  ? vscnprintf+0x80/0x80
[  197.899573][ T5932]  gfs2_fill_super+0x128d/0x1f50
[  197.899612][ T5932]  ? gfs2_reconfigure+0xcd0/0xcd0
[  197.909631][ T5928] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  197.912043][ T5932]  ? preempt_count_add+0x8d/0x190
[  197.917154][ T5928] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  197.922439][ T5932]  ? sb_set_blocksize+0xa5/0xe0
[  197.922485][ T5932]  get_tree_bdev+0x3f1/0x610
[  197.922515][ T5932]  ? gfs2_reconfigure+0xcd0/0xcd0
[  197.922543][ T5932]  gfs2_get_tree+0x4d/0x1e0
[  197.922570][ T5932]  vfs_get_tree+0x88/0x270
[  197.922596][ T5932]  do_new_mount+0x24a/0xa40
[  197.979554][ T5932]  __se_sys_mount+0x2d6/0x3c0
[  197.984385][ T5932]  ? __x64_sys_mount+0xc0/0xc0
[  197.989305][ T5932]  ? lockdep_hardirqs_on+0x94/0x140
[  197.995383][ T5932]  ? __x64_sys_mount+0x1c/0xc0
[  198.000507][ T5932]  do_syscall_64+0x4c/0xa0
[  198.005372][ T5932]  ? clear_bhb_loop+0x30/0x80
[  198.010531][ T5932]  ? clear_bhb_loop+0x30/0x80
[  198.015259][ T5932]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  198.017769][ T5930] syz.3.124 (5930): drop_caches: 2
[  198.021198][ T5932] RIP: 0033:0x7f7b6e11defa
[  198.021223][ T5932] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  198.021239][ T5932] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  198.021261][ T5932] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  198.021277][ T5932] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  198.021291][ T5932] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  198.086044][ T5932] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  198.094859][ T5932] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  198.103149][ T5932]  </TASK>
[  198.108260][ T5932] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  198.122708][ T5932] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  198.521639][ T5928] syz.2.122 (5928): drop_caches: 2
[  198.624562][ T5932] syz.4.123 (5932): drop_caches: 2
[  199.673945][ T5934] loop0: detected capacity change from 0 to 32768
[  199.705725][ T5937] loop1: detected capacity change from 0 to 32768
[  199.735882][ T5934] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  199.764144][ T5934] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  199.782815][ T5937] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  199.796220][ T5940] loop2: detected capacity change from 0 to 32768
[  199.808089][ T5937] CPU: 0 PID: 5937 Comm: syz.1.127 Not tainted syzkaller #0
[  199.816014][ T5937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  199.826676][ T5937] Call Trace:
[  199.830617][ T5937]  <TASK>
[  199.833587][ T5937]  dump_stack_lvl+0x168/0x230
[  199.838993][ T5937]  ? show_regs_print_info+0x20/0x20
[  199.844384][ T5937]  ? load_image+0x3b0/0x3b0
[  199.849044][ T5937]  sysfs_create_dir_ns+0x252/0x280
[  199.850410][ T5934] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  199.854522][ T5937]  ? __lock_acquire+0x7c60/0x7c60
[  199.868386][ T5937]  ? sysfs_warn_dup+0xa0/0xa0
[  199.873297][ T5937]  ? do_raw_spin_unlock+0x11d/0x230
[  199.878691][ T5937]  kobject_add_internal+0x662/0xd00
[  199.884127][ T5937]  kobject_init_and_add+0x122/0x190
[  199.889383][ T5937]  ? lockdep_softirqs_off+0x420/0x420
[  199.894889][ T5937]  ? kobject_add+0x210/0x210
[  199.899524][ T5937]  ? __init_swait_queue_head+0xa5/0x150
[  199.905423][ T5937]  gfs2_sys_fs_add+0x234/0x480
[  199.910247][ T5937]  ? gfs2_recover_set+0x240/0x240
[  199.915576][ T5937]  ? snprintf+0xd7/0x120
[  199.920065][ T5937]  ? __free_pages+0x95/0x1a0
[  199.924802][ T5937]  ? vscnprintf+0x80/0x80
[  199.929185][ T5937]  gfs2_fill_super+0x128d/0x1f50
[  199.934428][ T5937]  ? gfs2_reconfigure+0xcd0/0xcd0
[  199.939693][ T5937]  ? preempt_count_add+0x8d/0x190
[  199.944770][ T5937]  ? sb_set_blocksize+0xa5/0xe0
[  199.949680][ T5937]  get_tree_bdev+0x3f1/0x610
[  199.954405][ T5937]  ? gfs2_reconfigure+0xcd0/0xcd0
[  199.959639][ T5937]  gfs2_get_tree+0x4d/0x1e0
[  199.964407][ T5937]  vfs_get_tree+0x88/0x270
[  199.969216][ T5937]  do_new_mount+0x24a/0xa40
[  199.973958][ T5937]  __se_sys_mount+0x2d6/0x3c0
[  199.978902][ T5937]  ? __x64_sys_mount+0xc0/0xc0
[  199.983919][ T5937]  ? lockdep_hardirqs_on+0x94/0x140
[  199.989611][ T5937]  ? __x64_sys_mount+0x1c/0xc0
[  199.994653][ T5937]  do_syscall_64+0x4c/0xa0
[  199.999210][ T5937]  ? clear_bhb_loop+0x30/0x80
[  200.004549][ T5937]  ? clear_bhb_loop+0x30/0x80
[  200.009484][ T5937]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  200.016324][ T5937] RIP: 0033:0x7f049eb23efa
[  200.021164][ T5937] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  200.041414][ T5937] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  200.049985][ T5937] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  200.058080][ T5937] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  200.066638][ T5937] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  200.071468][ T5942] loop4: detected capacity change from 0 to 32768
[  200.074834][ T5937] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  200.090563][ T5937] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  200.098815][ T5937]  </TASK>
[  200.108944][ T5938] loop3: detected capacity change from 0 to 32768
[  200.115906][ T5937] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  200.147927][ T5937] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  200.167132][ T5938] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  200.167982][ T5934] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  200.186563][ T5938] CPU: 1 PID: 5938 Comm: syz.3.126 Not tainted syzkaller #0
[  200.194028][ T5938] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  200.195654][ T5937] syz.1.127 (5937): drop_caches: 2
[  200.204439][ T5938] Call Trace:
[  200.204458][ T5938]  <TASK>
[  200.204469][ T5938]  dump_stack_lvl+0x168/0x230
[  200.204504][ T5938]  ? show_regs_print_info+0x20/0x20
[  200.204528][ T5938]  ? load_image+0x3b0/0x3b0
[  200.204564][ T5938]  sysfs_create_dir_ns+0x252/0x280
[  200.233636][ T5934] syz.0.125 (5934): drop_caches: 2
[  200.236763][ T5938]  ? __lock_acquire+0x7c60/0x7c60
2025/11/20 09:01:00 executed programs: 125
[  200.247078][ T5938]  ? sysfs_warn_dup+0xa0/0xa0
[  200.252026][ T5938]  ? do_raw_spin_unlock+0x11d/0x230
[  200.257476][ T5938]  kobject_add_internal+0x662/0xd00
[  200.262725][ T5938]  kobject_init_and_add+0x122/0x190
[  200.268132][ T5938]  ? lockdep_softirqs_off+0x420/0x420
[  200.273742][ T5938]  ? kobject_add+0x210/0x210
[  200.278385][ T5938]  ? __init_swait_queue_head+0xa5/0x150
[  200.284192][ T5938]  gfs2_sys_fs_add+0x234/0x480
[  200.289085][ T5938]  ? gfs2_recover_set+0x240/0x240
[  200.294294][ T5938]  ? snprintf+0xd7/0x120
[  200.298807][ T5938]  ? __free_pages+0x95/0x1a0
[  200.303627][ T5938]  ? vscnprintf+0x80/0x80
[  200.307990][ T5938]  gfs2_fill_super+0x128d/0x1f50
[  200.313063][ T5938]  ? gfs2_reconfigure+0xcd0/0xcd0
[  200.318135][ T5938]  ? preempt_count_add+0x8d/0x190
[  200.323569][ T5938]  ? sb_set_blocksize+0xa5/0xe0
[  200.328761][ T5938]  get_tree_bdev+0x3f1/0x610
[  200.334043][ T5938]  ? gfs2_reconfigure+0xcd0/0xcd0
[  200.340450][ T5938]  gfs2_get_tree+0x4d/0x1e0
[  200.345108][ T5938]  vfs_get_tree+0x88/0x270
[  200.349537][ T5938]  do_new_mount+0x24a/0xa40
[  200.354844][ T5938]  __se_sys_mount+0x2d6/0x3c0
[  200.360211][ T5938]  ? __x64_sys_mount+0xc0/0xc0
[  200.365448][ T5938]  ? lockdep_hardirqs_on+0x94/0x140
[  200.370754][ T5938]  ? __x64_sys_mount+0x1c/0xc0
[  200.376099][ T5938]  do_syscall_64+0x4c/0xa0
[  200.380610][ T5938]  ? clear_bhb_loop+0x30/0x80
[  200.385779][ T5938]  ? clear_bhb_loop+0x30/0x80
[  200.390483][ T5938]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  200.396741][ T5938] RIP: 0033:0x7fa866a5befa
[  200.401342][ T5938] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  200.422569][ T5938] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  200.432130][ T5938] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  200.440584][ T5938] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  200.448732][ T5938] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  200.457635][ T5938] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  200.466329][ T5938] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  200.475313][ T5938]  </TASK>
[  200.485213][ T5938] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  200.505231][ T5938] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  200.506951][ T5942] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  200.548530][ T5940] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  200.556588][ T5940] CPU: 0 PID: 5940 Comm: syz.2.128 Not tainted syzkaller #0
[  200.564401][ T5940] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  200.574870][ T5940] Call Trace:
[  200.575885][ T5942] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  200.578265][ T5940]  <TASK>
[  200.578275][ T5940]  dump_stack_lvl+0x168/0x230
[  200.578309][ T5940]  ? show_regs_print_info+0x20/0x20
[  200.578334][ T5940]  ? load_image+0x3b0/0x3b0
[  200.578370][ T5940]  sysfs_create_dir_ns+0x252/0x280
[  200.578397][ T5940]  ? __lock_acquire+0x7c60/0x7c60
[  200.578423][ T5940]  ? sysfs_warn_dup+0xa0/0xa0
[  200.578451][ T5940]  ? do_raw_spin_unlock+0x11d/0x230
[  200.624504][ T5940]  kobject_add_internal+0x662/0xd00
[  200.630087][ T5940]  kobject_init_and_add+0x122/0x190
[  200.635323][ T5940]  ? lockdep_softirqs_off+0x420/0x420
[  200.640738][ T5940]  ? kobject_add+0x210/0x210
[  200.645508][ T5940]  ? __init_swait_queue_head+0xa5/0x150
[  200.651472][ T5940]  gfs2_sys_fs_add+0x234/0x480
[  200.656515][ T5940]  ? gfs2_recover_set+0x240/0x240
[  200.662028][ T5940]  ? snprintf+0xd7/0x120
[  200.665055][ T5942] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  200.666466][ T5940]  ? __free_pages+0x95/0x1a0
[  200.679849][ T5940]  ? vscnprintf+0x80/0x80
[  200.684362][ T5940]  gfs2_fill_super+0x128d/0x1f50
[  200.689856][ T5940]  ? gfs2_reconfigure+0xcd0/0xcd0
[  200.695139][ T5940]  ? preempt_count_add+0x8d/0x190
[  200.700362][ T5940]  ? sb_set_blocksize+0xa5/0xe0
[  200.705384][ T5940]  get_tree_bdev+0x3f1/0x610
[  200.710110][ T5940]  ? gfs2_reconfigure+0xcd0/0xcd0
[  200.715361][ T5940]  gfs2_get_tree+0x4d/0x1e0
[  200.719950][ T5940]  vfs_get_tree+0x88/0x270
[  200.724421][ T5940]  do_new_mount+0x24a/0xa40
[  200.729058][ T5940]  __se_sys_mount+0x2d6/0x3c0
[  200.734072][ T5940]  ? __x64_sys_mount+0xc0/0xc0
[  200.738974][ T5940]  ? lockdep_hardirqs_on+0x94/0x140
[  200.744223][ T5940]  ? __x64_sys_mount+0x1c/0xc0
[  200.749124][ T5940]  do_syscall_64+0x4c/0xa0
[  200.753574][ T5940]  ? clear_bhb_loop+0x30/0x80
[  200.758451][ T5940]  ? clear_bhb_loop+0x30/0x80
[  200.763366][ T5940]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  200.769479][ T5940] RIP: 0033:0x7f693264eefa
[  200.773941][ T5940] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  200.794398][ T5940] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  200.802947][ T5940] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  200.811042][ T5940] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  200.819628][ T5940] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  200.828002][ T5940] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  200.836133][ T5940] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  200.844625][ T5940]  </TASK>
[  200.881338][ T5940] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  200.895799][ T5940] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  201.012212][ T5942] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  201.077400][ T5942] syz.4.129 (5942): drop_caches: 2
[  201.307043][ T5938] syz.3.126 (5938): drop_caches: 2
[  201.376335][ T5940] syz.2.128 (5940): drop_caches: 2
[  202.211254][ T5944] loop1: detected capacity change from 0 to 32768
[  202.246466][ T5944] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  202.287465][ T5944] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  202.328602][ T5944] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  202.507016][ T5946] loop0: detected capacity change from 0 to 32768
[  202.562713][ T5946] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  202.562713][ T5948] loop4: detected capacity change from 0 to 32768
[  202.567639][ T5944] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  202.598523][ T5946] CPU: 1 PID: 5946 Comm: syz.0.130 Not tainted syzkaller #0
[  202.605998][ T5946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  202.616618][ T5946] Call Trace:
[  202.620109][ T5946]  <TASK>
[  202.623091][ T5946]  dump_stack_lvl+0x168/0x230
[  202.628250][ T5946]  ? show_regs_print_info+0x20/0x20
[  202.628325][ T5944] syz.1.131 (5944): drop_caches: 2
[  202.633604][ T5946]  ? load_image+0x3b0/0x3b0
[  202.633648][ T5946]  sysfs_create_dir_ns+0x252/0x280
[  202.648824][ T5946]  ? __lock_acquire+0x7c60/0x7c60
[  202.654605][ T5946]  ? sysfs_warn_dup+0xa0/0xa0
[  202.659790][ T5946]  ? do_raw_spin_unlock+0x11d/0x230
[  202.665032][ T5946]  kobject_add_internal+0x662/0xd00
[  202.670357][ T5946]  kobject_init_and_add+0x122/0x190
[  202.671466][ T5952] loop2: detected capacity change from 0 to 32768
[  202.676813][ T5946]  ? lockdep_softirqs_off+0x420/0x420
[  202.676855][ T5946]  ? kobject_add+0x210/0x210
[  202.676883][ T5946]  ? __init_swait_queue_head+0xa5/0x150
[  202.700895][ T5946]  gfs2_sys_fs_add+0x234/0x480
[  202.705881][ T5946]  ? gfs2_recover_set+0x240/0x240
[  202.710952][ T5946]  ? snprintf+0xd7/0x120
[  202.715499][ T5946]  ? __free_pages+0x95/0x1a0
[  202.720484][ T5946]  ? vscnprintf+0x80/0x80
[  202.725495][ T5946]  gfs2_fill_super+0x128d/0x1f50
[  202.730633][ T5946]  ? gfs2_reconfigure+0xcd0/0xcd0
[  202.733904][ T5948] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  202.735708][ T5946]  ? preempt_count_add+0x8d/0x190
[  202.749001][ T5946]  ? sb_set_blocksize+0xa5/0xe0
[  202.754299][ T5946]  get_tree_bdev+0x3f1/0x610
[  202.758933][ T5946]  ? gfs2_reconfigure+0xcd0/0xcd0
[  202.764176][ T5946]  gfs2_get_tree+0x4d/0x1e0
[  202.768826][ T5946]  vfs_get_tree+0x88/0x270
[  202.773472][ T5946]  do_new_mount+0x24a/0xa40
[  202.778239][ T5946]  __se_sys_mount+0x2d6/0x3c0
[  202.782977][ T5946]  ? __x64_sys_mount+0xc0/0xc0
[  202.787874][ T5946]  ? lockdep_hardirqs_on+0x94/0x140
[  202.793128][ T5946]  ? __x64_sys_mount+0x1c/0xc0
[  202.798294][ T5946]  do_syscall_64+0x4c/0xa0
[  202.802939][ T5946]  ? clear_bhb_loop+0x30/0x80
[  202.808030][ T5946]  ? clear_bhb_loop+0x30/0x80
[  202.813048][ T5946]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  202.819074][ T5946] RIP: 0033:0x7f9435efdefa
[  202.823529][ T5946] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  202.843342][ T5946] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  202.851789][ T5946] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  202.860774][ T5946] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  202.869158][ T5946] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  202.877165][ T5946] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  202.885733][ T5946] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  202.894215][ T5946]  </TASK>
[  202.911914][ T5948] CPU: 0 PID: 5948 Comm: syz.4.132 Not tainted syzkaller #0
[  202.919405][ T5948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  202.929760][ T5948] Call Trace:
[  202.933189][ T5948]  <TASK>
[  202.936718][ T5948]  dump_stack_lvl+0x168/0x230
[  202.942054][ T5948]  ? show_regs_print_info+0x20/0x20
[  202.947484][ T5948]  ? load_image+0x3b0/0x3b0
[  202.952045][ T5948]  sysfs_create_dir_ns+0x252/0x280
[  202.957286][ T5948]  ? __lock_acquire+0x7c60/0x7c60
[  202.962460][ T5948]  ? sysfs_warn_dup+0xa0/0xa0
[  202.967387][ T5948]  ? do_raw_spin_unlock+0x11d/0x230
[  202.972728][ T5948]  kobject_add_internal+0x662/0xd00
[  202.976817][ T5946] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  202.978193][ T5948]  kobject_init_and_add+0x122/0x190
[  202.978222][ T5948]  ? lockdep_softirqs_off+0x420/0x420
[  202.978251][ T5948]  ? kobject_add+0x210/0x210
[  202.978277][ T5948]  ? __init_swait_queue_head+0xa5/0x150
[  202.978307][ T5948]  gfs2_sys_fs_add+0x234/0x480
[  202.978331][ T5948]  ? gfs2_recover_set+0x240/0x240
[  203.006086][ T5950] loop3: detected capacity change from 0 to 32768
[  203.007654][ T5948]  ? snprintf+0xd7/0x120
[  203.032037][ T5946] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  203.034822][ T5948]  ? __free_pages+0x95/0x1a0
[  203.034855][ T5948]  ? vscnprintf+0x80/0x80
[  203.034890][ T5948]  gfs2_fill_super+0x128d/0x1f50
[  203.056874][ T5948]  ? gfs2_reconfigure+0xcd0/0xcd0
[  203.061921][ T5948]  ? preempt_count_add+0x8d/0x190
[  203.066987][ T5948]  ? sb_set_blocksize+0xa5/0xe0
[  203.071869][ T5948]  get_tree_bdev+0x3f1/0x610
[  203.076704][ T5948]  ? gfs2_reconfigure+0xcd0/0xcd0
[  203.081943][ T5948]  gfs2_get_tree+0x4d/0x1e0
[  203.086702][ T5948]  vfs_get_tree+0x88/0x270
[  203.091811][ T5948]  do_new_mount+0x24a/0xa40
[  203.096940][ T5948]  __se_sys_mount+0x2d6/0x3c0
[  203.101687][ T5948]  ? __x64_sys_mount+0xc0/0xc0
[  203.106564][ T5948]  ? lockdep_hardirqs_on+0x94/0x140
[  203.111862][ T5948]  ? __x64_sys_mount+0x1c/0xc0
[  203.116845][ T5948]  do_syscall_64+0x4c/0xa0
[  203.121390][ T5948]  ? clear_bhb_loop+0x30/0x80
[  203.126173][ T5948]  ? clear_bhb_loop+0x30/0x80
[  203.131273][ T5948]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  203.137356][ T5948] RIP: 0033:0x7f7b6e11defa
[  203.141789][ T5948] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  203.163769][ T5948] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  203.172588][ T5948] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  203.182431][ T5948] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  203.190520][ T5948] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  203.199034][ T5948] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  203.207438][ T5948] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  203.215798][ T5948]  </TASK>
[  203.237593][ T5952] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  203.254402][ T5952] CPU: 0 PID: 5952 Comm: syz.2.134 Not tainted syzkaller #0
[  203.261784][ T5952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  203.266856][ T5948] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  203.272167][ T5952] Call Trace:
[  203.272178][ T5952]  <TASK>
[  203.272186][ T5952]  dump_stack_lvl+0x168/0x230
[  203.272221][ T5952]  ? show_regs_print_info+0x20/0x20
[  203.272245][ T5952]  ? load_image+0x3b0/0x3b0
[  203.272291][ T5952]  sysfs_create_dir_ns+0x252/0x280
[  203.272318][ T5952]  ? __lock_acquire+0x7c60/0x7c60
[  203.272343][ T5952]  ? sysfs_warn_dup+0xa0/0xa0
[  203.293106][ T5948] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  203.293144][ T5952]  ? do_raw_spin_unlock+0x11d/0x230
[  203.336110][ T5952]  kobject_add_internal+0x662/0xd00
[  203.341728][ T5952]  kobject_init_and_add+0x122/0x190
[  203.347026][ T5952]  ? lockdep_softirqs_off+0x420/0x420
[  203.352426][ T5952]  ? kobject_add+0x210/0x210
[  203.357195][ T5952]  ? __init_swait_queue_head+0xa5/0x150
[  203.363059][ T5952]  gfs2_sys_fs_add+0x234/0x480
[  203.367999][ T5952]  ? gfs2_recover_set+0x240/0x240
[  203.373202][ T5952]  ? snprintf+0xd7/0x120
[  203.377919][ T5952]  ? __free_pages+0x95/0x1a0
[  203.382679][ T5952]  ? vscnprintf+0x80/0x80
[  203.387044][ T5952]  gfs2_fill_super+0x128d/0x1f50
[  203.392105][ T5952]  ? gfs2_reconfigure+0xcd0/0xcd0
[  203.397341][ T5952]  ? preempt_count_add+0x8d/0x190
[  203.402802][ T5952]  ? sb_set_blocksize+0xa5/0xe0
[  203.407709][ T5952]  get_tree_bdev+0x3f1/0x610
[  203.412422][ T5952]  ? gfs2_reconfigure+0xcd0/0xcd0
[  203.417882][ T5952]  gfs2_get_tree+0x4d/0x1e0
[  203.422750][ T5952]  vfs_get_tree+0x88/0x270
[  203.427412][ T5952]  do_new_mount+0x24a/0xa40
[  203.432051][ T5952]  __se_sys_mount+0x2d6/0x3c0
[  203.436943][ T5952]  ? __x64_sys_mount+0xc0/0xc0
[  203.442196][ T5952]  ? lockdep_hardirqs_on+0x94/0x140
[  203.447474][ T5952]  ? __x64_sys_mount+0x1c/0xc0
[  203.452279][ T5952]  do_syscall_64+0x4c/0xa0
[  203.456802][ T5952]  ? clear_bhb_loop+0x30/0x80
[  203.462120][ T5952]  ? clear_bhb_loop+0x30/0x80
[  203.467088][ T5952]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  203.474348][ T5952] RIP: 0033:0x7f693264eefa
[  203.479786][ T5952] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  203.504181][ T5952] RSP: 002b:00007f69318cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  203.513411][ T5952] RAX: ffffffffffffffda RBX: 00007f69318ccef0 RCX: 00007f693264eefa
[  203.522967][ T5952] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f69318cceb0
[  203.531691][ T5952] RBP: 0000000020000000 R08: 00007f69318ccef0 R09: 0000000000008c1b
[  203.540148][ T5952] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  203.549803][ T5952] R13: 00007f69318cceb0 R14: 000000000001272b R15: 0000000020000240
[  203.558728][ T5952]  </TASK>
[  203.565448][ T5952] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  203.581125][ T5952] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  203.609405][ T5950] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  203.626836][ T5952] syz.2.134 (5952): drop_caches: 2
[  203.632489][ T5950] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  203.697528][ T5950] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  204.013788][ T5950] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  204.027049][ T5948] syz.4.132 (5948): drop_caches: 2
[  204.078976][ T5950] syz.3.133 (5950): drop_caches: 2
[  205.185902][ T5954] loop2: detected capacity change from 0 to 32768
[  205.247686][ T5954] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  205.279896][ T5954] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  205.354060][ T5954] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  205.384981][ T5956] loop1: detected capacity change from 0 to 32768
[  205.458284][ T5956] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  205.501372][ T5956] CPU: 1 PID: 5956 Comm: syz.1.135 Not tainted syzkaller #0
[  205.509277][ T5956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  205.520755][ T5956] Call Trace:
[  205.524443][ T5956]  <TASK>
[  205.527412][ T5956]  dump_stack_lvl+0x168/0x230
[  205.532899][ T5956]  ? show_regs_print_info+0x20/0x20
[  205.539383][ T5956]  ? load_image+0x3b0/0x3b0
[  205.544290][ T5956]  sysfs_create_dir_ns+0x252/0x280
[  205.549552][ T5956]  ? __lock_acquire+0x7c60/0x7c60
[  205.555536][ T5956]  ? sysfs_warn_dup+0xa0/0xa0
[  205.560988][ T5956]  ? do_raw_spin_unlock+0x11d/0x230
[  205.566338][ T5956]  kobject_add_internal+0x662/0xd00
[  205.572230][ T5956]  kobject_init_and_add+0x122/0x190
[  205.577760][ T5956]  ? lockdep_softirqs_off+0x420/0x420
[  205.583311][ T5956]  ? kobject_add+0x210/0x210
[  205.588912][ T5956]  ? __init_swait_queue_head+0xa5/0x150
[  205.594864][ T5956]  gfs2_sys_fs_add+0x234/0x480
[  205.600416][ T5956]  ? gfs2_recover_set+0x240/0x240
[  205.605681][ T5956]  ? snprintf+0xd7/0x120
[  205.610087][ T5956]  ? __free_pages+0x95/0x1a0
[  205.614992][ T5956]  ? vscnprintf+0x80/0x80
[  205.619408][ T5956]  gfs2_fill_super+0x128d/0x1f50
[  205.621819][ T5958] loop4: detected capacity change from 0 to 32768
[  205.624462][ T5956]  ? gfs2_reconfigure+0xcd0/0xcd0
[  205.635947][ T5956]  ? preempt_count_add+0x8d/0x190
[  205.641114][ T5956]  ? sb_set_blocksize+0xa5/0xe0
[  205.646022][ T5956]  get_tree_bdev+0x3f1/0x610
[  205.650856][ T5956]  ? gfs2_reconfigure+0xcd0/0xcd0
[  205.656007][ T5956]  gfs2_get_tree+0x4d/0x1e0
[  205.660752][ T5956]  vfs_get_tree+0x88/0x270
[  205.665308][ T5956]  do_new_mount+0x24a/0xa40
[  205.669855][ T5956]  __se_sys_mount+0x2d6/0x3c0
[  205.674977][ T5956]  ? __x64_sys_mount+0xc0/0xc0
[  205.679790][ T5956]  ? lockdep_hardirqs_on+0x94/0x140
[  205.685108][ T5956]  ? __x64_sys_mount+0x1c/0xc0
[  205.690880][ T5956]  do_syscall_64+0x4c/0xa0
[  205.695338][ T5956]  ? clear_bhb_loop+0x30/0x80
[  205.700052][ T5956]  ? clear_bhb_loop+0x30/0x80
[  205.704910][ T5956]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  205.711486][ T5956] RIP: 0033:0x7f049eb23efa
[  205.716489][ T5956] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  205.727800][ T5960] loop0: detected capacity change from 0 to 32768
[  205.740112][ T5956] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  205.740146][ T5956] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  205.740161][ T5956] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  205.740175][ T5956] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  205.740194][ T5956] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  205.740208][ T5956] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  205.740237][ T5956]  </TASK>
[  205.831642][ T5958] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  205.846106][ T5960] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  205.856982][ T5958] CPU: 1 PID: 5958 Comm: syz.4.137 Not tainted syzkaller #0
[  205.864686][ T5958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  205.874868][ T5958] Call Trace:
[  205.878173][ T5958]  <TASK>
[  205.881296][ T5958]  dump_stack_lvl+0x168/0x230
[  205.886218][ T5958]  ? show_regs_print_info+0x20/0x20
[  205.891449][ T5958]  ? load_image+0x3b0/0x3b0
[  205.896176][ T5958]  sysfs_create_dir_ns+0x252/0x280
[  205.901996][ T5958]  ? __lock_acquire+0x7c60/0x7c60
[  205.907117][ T5958]  ? sysfs_warn_dup+0xa0/0xa0
[  205.912076][ T5958]  ? do_raw_spin_unlock+0x11d/0x230
[  205.917571][ T5958]  kobject_add_internal+0x662/0xd00
[  205.923198][ T5958]  kobject_init_and_add+0x122/0x190
[  205.928702][ T5958]  ? lockdep_softirqs_off+0x420/0x420
[  205.935002][ T5958]  ? kobject_add+0x210/0x210
[  205.939639][ T5958]  ? __init_swait_queue_head+0xa5/0x150
[  205.945538][ T5958]  gfs2_sys_fs_add+0x234/0x480
[  205.950330][ T5958]  ? gfs2_recover_set+0x240/0x240
[  205.952578][ T5962] loop3: detected capacity change from 0 to 32768
[  205.955433][ T5958]  ? snprintf+0xd7/0x120
[  205.967133][ T5958]  ? __free_pages+0x95/0x1a0
[  205.972030][ T5958]  ? vscnprintf+0x80/0x80
[  205.976437][ T5958]  gfs2_fill_super+0x128d/0x1f50
[  205.981497][ T5958]  ? gfs2_reconfigure+0xcd0/0xcd0
[  205.986765][ T5958]  ? preempt_count_add+0x8d/0x190
[  205.992123][ T5958]  ? sb_set_blocksize+0xa5/0xe0
[  205.997297][ T5958]  get_tree_bdev+0x3f1/0x610
[  206.001925][ T5958]  ? gfs2_reconfigure+0xcd0/0xcd0
[  206.004811][ T5962] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  206.007000][ T5958]  gfs2_get_tree+0x4d/0x1e0
[  206.020187][ T5958]  vfs_get_tree+0x88/0x270
[  206.024955][ T5958]  do_new_mount+0x24a/0xa40
[  206.029549][ T5958]  __se_sys_mount+0x2d6/0x3c0
[  206.034757][ T5958]  ? __x64_sys_mount+0xc0/0xc0
[  206.039658][ T5958]  ? lockdep_hardirqs_on+0x94/0x140
[  206.044970][ T5958]  ? __x64_sys_mount+0x1c/0xc0
[  206.049760][ T5958]  do_syscall_64+0x4c/0xa0
[  206.054221][ T5958]  ? clear_bhb_loop+0x30/0x80
[  206.059138][ T5958]  ? clear_bhb_loop+0x30/0x80
[  206.064124][ T5958]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  206.070064][ T5958] RIP: 0033:0x7f7b6e11defa
[  206.074693][ T5958] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  206.095391][ T5958] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  206.104030][ T5958] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  206.112362][ T5958] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  206.120607][ T5958] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  206.129004][ T5958] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  206.137302][ T5958] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  206.145515][ T5958]  </TASK>
[  206.161424][ T5962] CPU: 0 PID: 5962 Comm: syz.3.138 Not tainted syzkaller #0
[  206.169244][ T5962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  206.179981][ T5962] Call Trace:
[  206.183577][ T5962]  <TASK>
[  206.186804][ T5962]  dump_stack_lvl+0x168/0x230
[  206.191843][ T5962]  ? show_regs_print_info+0x20/0x20
[  206.197175][ T5962]  ? load_image+0x3b0/0x3b0
[  206.202080][ T5962]  sysfs_create_dir_ns+0x252/0x280
[  206.207413][ T5962]  ? __lock_acquire+0x7c60/0x7c60
[  206.212566][ T5962]  ? sysfs_warn_dup+0xa0/0xa0
[  206.217289][ T5962]  ? do_raw_spin_unlock+0x11d/0x230
[  206.222682][ T5962]  kobject_add_internal+0x662/0xd00
[  206.228157][ T5962]  kobject_init_and_add+0x122/0x190
[  206.233582][ T5962]  ? lockdep_softirqs_off+0x420/0x420
[  206.239391][ T5962]  ? kobject_add+0x210/0x210
[  206.244026][ T5962]  ? __init_swait_queue_head+0xa5/0x150
[  206.249617][ T5962]  gfs2_sys_fs_add+0x234/0x480
[  206.255121][ T5962]  ? gfs2_recover_set+0x240/0x240
[  206.260427][ T5962]  ? snprintf+0xd7/0x120
[  206.264827][ T5962]  ? __free_pages+0x95/0x1a0
[  206.268383][ T5954] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  206.269534][ T5962]  ? vscnprintf+0x80/0x80
[  206.281913][ T5962]  gfs2_fill_super+0x128d/0x1f50
[  206.287069][ T5962]  ? gfs2_reconfigure+0xcd0/0xcd0
[  206.292218][ T5962]  ? preempt_count_add+0x8d/0x190
[  206.297277][ T5962]  ? sb_set_blocksize+0xa5/0xe0
[  206.302180][ T5962]  get_tree_bdev+0x3f1/0x610
[  206.307191][ T5962]  ? gfs2_reconfigure+0xcd0/0xcd0
[  206.312610][ T5962]  gfs2_get_tree+0x4d/0x1e0
[  206.317419][ T5962]  vfs_get_tree+0x88/0x270
[  206.321882][ T5962]  do_new_mount+0x24a/0xa40
[  206.326525][ T5962]  __se_sys_mount+0x2d6/0x3c0
[  206.331243][ T5962]  ? __x64_sys_mount+0xc0/0xc0
[  206.336060][ T5962]  ? lockdep_hardirqs_on+0x94/0x140
[  206.341558][ T5962]  ? __x64_sys_mount+0x1c/0xc0
[  206.346365][ T5962]  do_syscall_64+0x4c/0xa0
[  206.350942][ T5962]  ? clear_bhb_loop+0x30/0x80
[  206.355850][ T5962]  ? clear_bhb_loop+0x30/0x80
[  206.360560][ T5962]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  206.366573][ T5962] RIP: 0033:0x7fa866a5befa
[  206.371227][ T5962] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  206.391589][ T5962] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  206.400051][ T5962] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  206.408351][ T5962] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  206.416643][ T5962] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  206.424833][ T5962] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  206.432977][ T5962] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  206.442419][ T5962]  </TASK>
[  206.478347][ T5960] CPU: 0 PID: 5960 Comm: syz.0.139 Not tainted syzkaller #0
[  206.486069][ T5960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  206.496435][ T5960] Call Trace:
[  206.499844][ T5960]  <TASK>
[  206.502799][ T5960]  dump_stack_lvl+0x168/0x230
[  206.506010][ T5954] syz.2.136 (5954): drop_caches: 2
[  206.507519][ T5960]  ? show_regs_print_info+0x20/0x20
[  206.517845][ T5960]  ? load_image+0x3b0/0x3b0
[  206.522409][ T5960]  sysfs_create_dir_ns+0x252/0x280
[  206.527745][ T5960]  ? __lock_acquire+0x7c60/0x7c60
[  206.532987][ T5960]  ? sysfs_warn_dup+0xa0/0xa0
[  206.537709][ T5960]  ? do_raw_spin_unlock+0x11d/0x230
[  206.543044][ T5960]  kobject_add_internal+0x662/0xd00
[  206.548286][ T5960]  kobject_init_and_add+0x122/0x190
[  206.553525][ T5960]  ? lockdep_softirqs_off+0x420/0x420
[  206.558940][ T5960]  ? kobject_add+0x210/0x210
[  206.563742][ T5960]  ? __init_swait_queue_head+0xa5/0x150
[  206.569933][ T5960]  gfs2_sys_fs_add+0x234/0x480
[  206.574959][ T5960]  ? gfs2_recover_set+0x240/0x240
[  206.580112][ T5960]  ? snprintf+0xd7/0x120
[  206.584657][ T5960]  ? __free_pages+0x95/0x1a0
[  206.589837][ T5960]  ? vscnprintf+0x80/0x80
[  206.595010][ T5960]  gfs2_fill_super+0x128d/0x1f50
[  206.600278][ T5960]  ? gfs2_reconfigure+0xcd0/0xcd0
[  206.605684][ T5960]  ? preempt_count_add+0x8d/0x190
[  206.610954][ T5960]  ? sb_set_blocksize+0xa5/0xe0
[  206.617927][ T5960]  get_tree_bdev+0x3f1/0x610
[  206.622749][ T5960]  ? gfs2_reconfigure+0xcd0/0xcd0
[  206.628080][ T5960]  gfs2_get_tree+0x4d/0x1e0
[  206.632659][ T5960]  vfs_get_tree+0x88/0x270
[  206.637416][ T5960]  do_new_mount+0x24a/0xa40
[  206.641955][ T5960]  __se_sys_mount+0x2d6/0x3c0
[  206.646771][ T5960]  ? __x64_sys_mount+0xc0/0xc0
[  206.651676][ T5960]  ? lockdep_hardirqs_on+0x94/0x140
[  206.657122][ T5960]  ? __x64_sys_mount+0x1c/0xc0
[  206.662118][ T5960]  do_syscall_64+0x4c/0xa0
[  206.666758][ T5960]  ? clear_bhb_loop+0x30/0x80
[  206.671661][ T5960]  ? clear_bhb_loop+0x30/0x80
[  206.676583][ T5960]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  206.682521][ T5960] RIP: 0033:0x7f9435efdefa
[  206.687050][ T5960] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  206.707394][ T5960] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  206.716164][ T5960] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  206.724521][ T5960] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  206.733194][ T5960] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  206.741565][ T5960] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  206.749569][ T5960] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  206.757766][ T5960]  </TASK>
2025/11/20 09:01:07 executed programs: 135
[  206.807981][ T5962] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  206.846510][ T5962] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  206.882227][ T5956] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  206.903368][ T5956] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  206.915546][ T5958] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  206.936121][ T5958] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  206.946444][ T5958] syz.4.137 (5958): drop_caches: 2
[  206.958175][ T5960] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  207.087297][ T5960] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  207.892110][ T5964] loop2: detected capacity change from 0 to 32768
[  207.961327][ T5964] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  207.992090][ T5964] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  208.051462][ T5964] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  208.254680][ T5964] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  208.302071][ T5964] syz.2.140 (5964): drop_caches: 2
[  208.388409][ T5966] loop4: detected capacity change from 0 to 32768
[  208.430359][ T5968] loop1: detected capacity change from 0 to 32768
[  208.443374][ T5966] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  208.495510][ T5968] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  208.513303][ T5966] CPU: 1 PID: 5966 Comm: syz.4.142 Not tainted syzkaller #0
[  208.520754][ T5966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  208.531210][ T5966] Call Trace:
[  208.534748][ T5966]  <TASK>
[  208.536232][ T5968] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  208.537716][ T5966]  dump_stack_lvl+0x168/0x230
[  208.537754][ T5966]  ? show_regs_print_info+0x20/0x20
[  208.555795][ T5966]  ? load_image+0x3b0/0x3b0
[  208.560387][ T5966]  sysfs_create_dir_ns+0x252/0x280
[  208.565636][ T5966]  ? __lock_acquire+0x7c60/0x7c60
[  208.570894][ T5966]  ? sysfs_warn_dup+0xa0/0xa0
[  208.575931][ T5966]  ? do_raw_spin_unlock+0x11d/0x230
[  208.581602][ T5966]  kobject_add_internal+0x662/0xd00
[  208.587180][ T5966]  kobject_init_and_add+0x122/0x190
[  208.592516][ T5966]  ? lockdep_softirqs_off+0x420/0x420
[  208.598595][ T5966]  ? kobject_add+0x210/0x210
[  208.603420][ T5966]  ? __init_swait_queue_head+0xa5/0x150
[  208.609157][ T5966]  gfs2_sys_fs_add+0x234/0x480
[  208.614120][ T5966]  ? gfs2_recover_set+0x240/0x240
[  208.619416][ T5966]  ? snprintf+0xd7/0x120
[  208.623709][ T5966]  ? __free_pages+0x95/0x1a0
[  208.628436][ T5966]  ? vscnprintf+0x80/0x80
[  208.632992][ T5966]  gfs2_fill_super+0x128d/0x1f50
[  208.638604][ T5966]  ? gfs2_reconfigure+0xcd0/0xcd0
[  208.643881][ T5966]  ? preempt_count_add+0x8d/0x190
[  208.649211][ T5966]  ? sb_set_blocksize+0xa5/0xe0
[  208.654157][ T5966]  get_tree_bdev+0x3f1/0x610
[  208.659049][ T5966]  ? gfs2_reconfigure+0xcd0/0xcd0
[  208.664355][ T5966]  gfs2_get_tree+0x4d/0x1e0
[  208.669038][ T5966]  vfs_get_tree+0x88/0x270
[  208.674111][ T5966]  do_new_mount+0x24a/0xa40
[  208.679546][ T5966]  __se_sys_mount+0x2d6/0x3c0
[  208.684291][ T5966]  ? __x64_sys_mount+0xc0/0xc0
[  208.689282][ T5966]  ? lockdep_hardirqs_on+0x94/0x140
[  208.695032][ T5966]  ? __x64_sys_mount+0x1c/0xc0
[  208.700379][ T5966]  do_syscall_64+0x4c/0xa0
[  208.705033][ T5966]  ? clear_bhb_loop+0x30/0x80
[  208.710114][ T5966]  ? clear_bhb_loop+0x30/0x80
[  208.715326][ T5966]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  208.721967][ T5966] RIP: 0033:0x7f7b6e11defa
[  208.727515][ T5966] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  208.732633][ T5968] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  208.749088][ T5966] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  208.749128][ T5966] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  208.749143][ T5966] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  208.749157][ T5966] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  208.749172][ T5966] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  208.749186][ T5966] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  208.808008][ T5966]  </TASK>
[  208.962815][ T5968] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  208.982986][ T5966] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  209.005114][ T5966] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  209.019646][ T5968] syz.1.141 (5968): drop_caches: 2
[  209.291943][ T5970] loop0: detected capacity change from 0 to 32768
[  209.378617][ T5972] loop3: detected capacity change from 0 to 32768
[  209.406996][ T5966] syz.4.142 (5966): drop_caches: 2
[  209.450209][ T5972] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  209.470688][ T5972] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  209.482040][ T5970] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  209.525490][ T5970] CPU: 1 PID: 5970 Comm: syz.0.143 Not tainted syzkaller #0
[  209.534180][ T5970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  209.544738][ T5970] Call Trace:
[  209.548264][ T5970]  <TASK>
[  209.551778][ T5970]  dump_stack_lvl+0x168/0x230
[  209.556886][ T5970]  ? show_regs_print_info+0x20/0x20
[  209.562580][ T5970]  ? load_image+0x3b0/0x3b0
[  209.567278][ T5970]  sysfs_create_dir_ns+0x252/0x280
[  209.572732][ T5970]  ? __lock_acquire+0x7c60/0x7c60
[  209.577808][ T5970]  ? sysfs_warn_dup+0xa0/0xa0
[  209.582715][ T5970]  ? do_raw_spin_unlock+0x11d/0x230
[  209.588235][ T5970]  kobject_add_internal+0x662/0xd00
[  209.593682][ T5970]  kobject_init_and_add+0x122/0x190
[  209.599569][ T5970]  ? lockdep_softirqs_off+0x420/0x420
[  209.605694][ T5970]  ? kobject_add+0x210/0x210
[  209.610429][ T5970]  ? __init_swait_queue_head+0xa5/0x150
[  209.616199][ T5970]  gfs2_sys_fs_add+0x234/0x480
[  209.621141][ T5970]  ? gfs2_recover_set+0x240/0x240
[  209.626261][ T5970]  ? snprintf+0xd7/0x120
[  209.630549][ T5970]  ? __free_pages+0x95/0x1a0
[  209.635196][ T5970]  ? vscnprintf+0x80/0x80
[  209.639592][ T5970]  gfs2_fill_super+0x128d/0x1f50
[  209.644586][ T5970]  ? gfs2_reconfigure+0xcd0/0xcd0
[  209.649655][ T5970]  ? preempt_count_add+0x8d/0x190
[  209.654730][ T5970]  ? sb_set_blocksize+0xa5/0xe0
[  209.659797][ T5970]  get_tree_bdev+0x3f1/0x610
[  209.664438][ T5970]  ? gfs2_reconfigure+0xcd0/0xcd0
[  209.669516][ T5970]  gfs2_get_tree+0x4d/0x1e0
[  209.674068][ T5970]  vfs_get_tree+0x88/0x270
[  209.678731][ T5970]  do_new_mount+0x24a/0xa40
[  209.683296][ T5970]  __se_sys_mount+0x2d6/0x3c0
[  209.688044][ T5970]  ? __x64_sys_mount+0xc0/0xc0
[  209.692850][ T5970]  ? lockdep_hardirqs_on+0x94/0x140
[  209.698272][ T5970]  ? __x64_sys_mount+0x1c/0xc0
[  209.703292][ T5970]  do_syscall_64+0x4c/0xa0
[  209.708061][ T5970]  ? clear_bhb_loop+0x30/0x80
[  209.712916][ T5970]  ? clear_bhb_loop+0x30/0x80
[  209.717755][ T5970]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  209.724404][ T5970] RIP: 0033:0x7f9435efdefa
[  209.729005][ T5970] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  209.749430][ T5970] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  209.758344][ T5970] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  209.766545][ T5970] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  209.774661][ T5970] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  209.782772][ T5970] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  209.791560][ T5970] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  209.799677][ T5970]  </TASK>
[  209.820324][ T5972] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  210.003546][ T5972] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  210.059064][ T5972] syz.3.144 (5972): drop_caches: 2
[  210.186498][ T5974] loop2: detected capacity change from 0 to 32768
[  210.224811][ T5974] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  210.248021][ T5974] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  210.297339][ T5974] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  210.422279][ T5976] loop1: detected capacity change from 0 to 32768
[  210.483500][ T5976] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  210.508227][ T5976] CPU: 1 PID: 5976 Comm: syz.1.146 Not tainted syzkaller #0
[  210.516068][ T5976] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  210.526516][ T5976] Call Trace:
[  210.529830][ T5976]  <TASK>
[  210.532901][ T5976]  dump_stack_lvl+0x168/0x230
[  210.538299][ T5976]  ? show_regs_print_info+0x20/0x20
[  210.543637][ T5976]  ? load_image+0x3b0/0x3b0
[  210.548298][ T5976]  sysfs_create_dir_ns+0x252/0x280
[  210.553496][ T5976]  ? __lock_acquire+0x7c60/0x7c60
[  210.558765][ T5976]  ? sysfs_warn_dup+0xa0/0xa0
[  210.563670][ T5976]  ? do_raw_spin_unlock+0x11d/0x230
[  210.569604][ T5976]  kobject_add_internal+0x662/0xd00
[  210.574955][ T5976]  kobject_init_and_add+0x122/0x190
[  210.580283][ T5976]  ? lockdep_softirqs_off+0x420/0x420
[  210.585711][ T5976]  ? kobject_add+0x210/0x210
[  210.590431][ T5976]  ? __init_swait_queue_head+0xa5/0x150
[  210.596264][ T5976]  gfs2_sys_fs_add+0x234/0x480
[  210.601173][ T5976]  ? gfs2_recover_set+0x240/0x240
[  210.606336][ T5976]  ? snprintf+0xd7/0x120
[  210.610625][ T5976]  ? __free_pages+0x95/0x1a0
[  210.615267][ T5976]  ? vscnprintf+0x80/0x80
[  210.619660][ T5976]  gfs2_fill_super+0x128d/0x1f50
[  210.625592][ T5976]  ? gfs2_reconfigure+0xcd0/0xcd0
[  210.631252][ T5976]  ? preempt_count_add+0x8d/0x190
[  210.636630][ T5976]  ? sb_set_blocksize+0xa5/0xe0
[  210.641961][ T5976]  get_tree_bdev+0x3f1/0x610
[  210.646610][ T5976]  ? gfs2_reconfigure+0xcd0/0xcd0
[  210.651714][ T5976]  gfs2_get_tree+0x4d/0x1e0
[  210.656263][ T5976]  vfs_get_tree+0x88/0x270
[  210.660947][ T5976]  do_new_mount+0x24a/0xa40
[  210.665777][ T5976]  __se_sys_mount+0x2d6/0x3c0
[  210.670617][ T5976]  ? __x64_sys_mount+0xc0/0xc0
[  210.675724][ T5976]  ? lockdep_hardirqs_on+0x94/0x140
[  210.681159][ T5976]  ? __x64_sys_mount+0x1c/0xc0
[  210.686165][ T5976]  do_syscall_64+0x4c/0xa0
[  210.690913][ T5976]  ? clear_bhb_loop+0x30/0x80
[  210.695895][ T5976]  ? clear_bhb_loop+0x30/0x80
[  210.701215][ T5976]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  210.707247][ T5976] RIP: 0033:0x7f049eb23efa
[  210.711701][ T5976] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  210.731762][ T5976] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  210.740305][ T5976] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  210.748911][ T5976] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  210.757187][ T5976] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  210.765634][ T5976] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  210.773861][ T5976] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  210.783599][ T5976]  </TASK>
[  210.798667][ T5974] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  210.811077][ T5970] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  210.826538][ T5970] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  210.840659][ T5974] syz.2.145 (5974): drop_caches: 2
[  210.848450][ T5976] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  210.863203][ T5976] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  210.887487][ T5976] syz.1.146 (5976): drop_caches: 2
[  211.031917][ T5978] loop4: detected capacity change from 0 to 32768
[  211.141026][ T5978] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  211.187173][ T5978] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  211.278789][ T5978] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  211.532251][ T5978] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  211.581234][ T5978] syz.4.147 (5978): drop_caches: 2
[  211.803449][ T5980] loop3: detected capacity change from 0 to 32768
[  211.886911][ T5980] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  211.925240][ T5980] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  211.984965][ T5980] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  212.218136][ T5980] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  212.272953][ T5980] syz.3.148 (5980): drop_caches: 2
2025/11/20 09:01:12 executed programs: 148
[  212.488770][ T5984] loop2: detected capacity change from 0 to 32768
[  212.502572][ T5982] loop1: detected capacity change from 0 to 32768
[  212.538268][ T5984] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  212.560645][ T5984] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  212.592241][ T5984] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  212.632911][ T5982] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  212.663132][ T5982] CPU: 1 PID: 5982 Comm: syz.1.151 Not tainted syzkaller #0
[  212.670676][ T5982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  212.681389][ T5982] Call Trace:
[  212.684799][ T5982]  <TASK>
[  212.687828][ T5982]  dump_stack_lvl+0x168/0x230
[  212.692567][ T5982]  ? show_regs_print_info+0x20/0x20
[  212.698182][ T5982]  ? load_image+0x3b0/0x3b0
[  212.703341][ T5982]  sysfs_create_dir_ns+0x252/0x280
[  212.708598][ T5982]  ? __lock_acquire+0x7c60/0x7c60
[  212.713859][ T5982]  ? sysfs_warn_dup+0xa0/0xa0
[  212.718713][ T5982]  ? do_raw_spin_unlock+0x11d/0x230
[  212.724224][ T5982]  kobject_add_internal+0x662/0xd00
[  212.729852][ T5982]  kobject_init_and_add+0x122/0x190
[  212.735398][ T5982]  ? lockdep_softirqs_off+0x420/0x420
[  212.741019][ T5982]  ? kobject_add+0x210/0x210
[  212.745854][ T5982]  ? __init_swait_queue_head+0xa5/0x150
[  212.751467][ T5982]  gfs2_sys_fs_add+0x234/0x480
[  212.756474][ T5982]  ? gfs2_recover_set+0x240/0x240
[  212.761643][ T5982]  ? snprintf+0xd7/0x120
[  212.765932][ T5982]  ? __free_pages+0x95/0x1a0
[  212.770849][ T5982]  ? vscnprintf+0x80/0x80
[  212.775244][ T5982]  gfs2_fill_super+0x128d/0x1f50
[  212.780519][ T5982]  ? gfs2_reconfigure+0xcd0/0xcd0
[  212.785594][ T5982]  ? preempt_count_add+0x8d/0x190
[  212.791240][ T5982]  ? sb_set_blocksize+0xa5/0xe0
[  212.796139][ T5982]  get_tree_bdev+0x3f1/0x610
[  212.800878][ T5982]  ? gfs2_reconfigure+0xcd0/0xcd0
[  212.807139][ T5982]  gfs2_get_tree+0x4d/0x1e0
[  212.811691][ T5982]  vfs_get_tree+0x88/0x270
[  212.816573][ T5982]  do_new_mount+0x24a/0xa40
[  212.821450][ T5982]  __se_sys_mount+0x2d6/0x3c0
[  212.826403][ T5982]  ? __x64_sys_mount+0xc0/0xc0
[  212.832303][ T5982]  ? lockdep_hardirqs_on+0x94/0x140
[  212.837640][ T5982]  ? __x64_sys_mount+0x1c/0xc0
[  212.843421][ T5982]  do_syscall_64+0x4c/0xa0
[  212.848104][ T5982]  ? clear_bhb_loop+0x30/0x80
[  212.853017][ T5982]  ? clear_bhb_loop+0x30/0x80
[  212.857919][ T5982]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  212.864072][ T5982] RIP: 0033:0x7f049eb23efa
[  212.868606][ T5982] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  212.898461][ T5982] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  212.907314][ T5982] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  212.915849][ T5982] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  212.923968][ T5982] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  212.924248][ T5986] loop0: detected capacity change from 0 to 32768
[  212.932275][ T5982] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  212.932299][ T5982] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  212.932329][ T5982]  </TASK>
[  213.095045][ T5986] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  213.127539][ T5986] CPU: 0 PID: 5986 Comm: syz.0.150 Not tainted syzkaller #0
[  213.135073][ T5986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  213.142093][ T5984] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  213.145738][ T5986] Call Trace:
[  213.145749][ T5986]  <TASK>
[  213.160696][ T5986]  dump_stack_lvl+0x168/0x230
[  213.175268][ T5986]  ? show_regs_print_info+0x20/0x20
[  213.182129][ T5986]  ? load_image+0x3b0/0x3b0
[  213.186709][ T5986]  sysfs_create_dir_ns+0x252/0x280
[  213.194383][ T5986]  ? __lock_acquire+0x7c60/0x7c60
[  213.199922][ T5986]  ? sysfs_warn_dup+0xa0/0xa0
[  213.206136][ T5986]  ? do_raw_spin_unlock+0x11d/0x230
[  213.212647][ T5986]  kobject_add_internal+0x662/0xd00
[  213.218290][ T5986]  kobject_init_and_add+0x122/0x190
[  213.224219][ T5986]  ? lockdep_softirqs_off+0x420/0x420
[  213.230141][ T5986]  ? kobject_add+0x210/0x210
[  213.235426][ T5986]  ? __init_swait_queue_head+0xa5/0x150
[  213.241393][ T5986]  gfs2_sys_fs_add+0x234/0x480
[  213.246473][ T5986]  ? gfs2_recover_set+0x240/0x240
[  213.252344][ T5986]  ? snprintf+0xd7/0x120
[  213.256958][ T5986]  ? __free_pages+0x95/0x1a0
[  213.262237][ T5986]  ? vscnprintf+0x80/0x80
[  213.266876][ T5986]  gfs2_fill_super+0x128d/0x1f50
[  213.272623][ T5986]  ? gfs2_reconfigure+0xcd0/0xcd0
[  213.277719][ T5986]  ? preempt_count_add+0x8d/0x190
[  213.282986][ T5986]  ? sb_set_blocksize+0xa5/0xe0
[  213.287872][ T5986]  get_tree_bdev+0x3f1/0x610
[  213.292589][ T5986]  ? gfs2_reconfigure+0xcd0/0xcd0
[  213.297655][ T5986]  gfs2_get_tree+0x4d/0x1e0
[  213.302196][ T5986]  vfs_get_tree+0x88/0x270
[  213.306873][ T5986]  do_new_mount+0x24a/0xa40
[  213.311514][ T5986]  __se_sys_mount+0x2d6/0x3c0
[  213.316339][ T5986]  ? __x64_sys_mount+0xc0/0xc0
[  213.321250][ T5986]  ? lockdep_hardirqs_on+0x94/0x140
[  213.326713][ T5986]  ? __x64_sys_mount+0x1c/0xc0
[  213.331724][ T5986]  do_syscall_64+0x4c/0xa0
[  213.336316][ T5986]  ? clear_bhb_loop+0x30/0x80
[  213.341250][ T5986]  ? clear_bhb_loop+0x30/0x80
[  213.346421][ T5986]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  213.352469][ T5986] RIP: 0033:0x7f9435efdefa
[  213.357040][ T5986] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  213.377566][ T5986] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  213.386024][ T5986] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  213.394116][ T5986] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  213.402123][ T5986] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  213.410548][ T5986] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  213.418848][ T5986] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  213.427056][ T5986]  </TASK>
[  213.462025][ T5984] syz.2.149 (5984): drop_caches: 2
[  213.495013][ T5988] loop4: detected capacity change from 0 to 32768
[  213.527310][ T5986] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  213.546887][ T5986] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  213.607165][ T5988] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  213.654802][ T5982] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  213.686429][ T5988] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  213.717664][ T5988] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  213.718146][ T5982] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  214.028909][ T5990] loop3: detected capacity change from 0 to 32768
[  214.041178][ T5986] syz.0.150 (5986): drop_caches: 2
[  214.047562][ T5988] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  214.084475][ T5990] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  214.110874][ T5988] syz.4.152 (5988): drop_caches: 2
[  214.155247][ T5990] CPU: 1 PID: 5990 Comm: syz.3.153 Not tainted syzkaller #0
[  214.162993][ T5990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  214.173260][ T5990] Call Trace:
[  214.176569][ T5990]  <TASK>
[  214.179621][ T5990]  dump_stack_lvl+0x168/0x230
[  214.184358][ T5990]  ? show_regs_print_info+0x20/0x20
[  214.189580][ T5990]  ? load_image+0x3b0/0x3b0
[  214.194196][ T5990]  sysfs_create_dir_ns+0x252/0x280
[  214.199971][ T5990]  ? __lock_acquire+0x7c60/0x7c60
[  214.205139][ T5990]  ? sysfs_warn_dup+0xa0/0xa0
[  214.210016][ T5990]  ? do_raw_spin_unlock+0x11d/0x230
[  214.215253][ T5990]  kobject_add_internal+0x662/0xd00
[  214.220909][ T5990]  kobject_init_and_add+0x122/0x190
[  214.226255][ T5990]  ? lockdep_softirqs_off+0x420/0x420
[  214.231677][ T5990]  ? kobject_add+0x210/0x210
[  214.236304][ T5990]  ? __init_swait_queue_head+0xa5/0x150
[  214.242143][ T5990]  gfs2_sys_fs_add+0x234/0x480
[  214.247033][ T5990]  ? gfs2_recover_set+0x240/0x240
[  214.252185][ T5990]  ? snprintf+0xd7/0x120
[  214.256488][ T5990]  ? __free_pages+0x95/0x1a0
[  214.261448][ T5990]  ? vscnprintf+0x80/0x80
[  214.265902][ T5990]  gfs2_fill_super+0x128d/0x1f50
[  214.270866][ T5990]  ? gfs2_reconfigure+0xcd0/0xcd0
[  214.275908][ T5990]  ? preempt_count_add+0x8d/0x190
[  214.280962][ T5990]  ? sb_set_blocksize+0xa5/0xe0
[  214.285914][ T5990]  get_tree_bdev+0x3f1/0x610
[  214.290825][ T5990]  ? gfs2_reconfigure+0xcd0/0xcd0
[  214.295926][ T5990]  gfs2_get_tree+0x4d/0x1e0
[  214.300472][ T5990]  vfs_get_tree+0x88/0x270
[  214.305006][ T5990]  do_new_mount+0x24a/0xa40
[  214.309626][ T5990]  __se_sys_mount+0x2d6/0x3c0
[  214.314455][ T5990]  ? __x64_sys_mount+0xc0/0xc0
[  214.319318][ T5990]  ? lockdep_hardirqs_on+0x94/0x140
[  214.324819][ T5990]  ? __x64_sys_mount+0x1c/0xc0
[  214.329709][ T5990]  do_syscall_64+0x4c/0xa0
[  214.334573][ T5990]  ? clear_bhb_loop+0x30/0x80
[  214.339414][ T5990]  ? clear_bhb_loop+0x30/0x80
[  214.344365][ T5990]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  214.350639][ T5990] RIP: 0033:0x7fa866a5befa
[  214.356450][ T5990] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  214.376888][ T5990] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  214.385440][ T5990] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  214.393881][ T5990] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  214.401977][ T5990] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  214.410061][ T5990] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  214.418139][ T5990] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  214.426652][ T5990]  </TASK>
[  214.451295][ T5990] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  214.506076][ T5990] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  214.566135][ T5990] syz.3.153 (5990): drop_caches: 2
[  215.512142][ T5992] loop2: detected capacity change from 0 to 32768
[  215.561803][ T5992] gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
[  215.594954][ T5992] gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
[  215.634114][ T5994] loop0: detected capacity change from 0 to 32768
[  215.642764][ T5992] gfs2: fsid=statfs_quantum.s: journal 0 mapped with 16 extents in 0ms
[  215.687464][ T5994] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  215.718099][ T5994] CPU: 0 PID: 5994 Comm: syz.0.155 Not tainted syzkaller #0
[  215.725546][ T5994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  215.735735][ T5994] Call Trace:
[  215.739050][ T5994]  <TASK>
[  215.742004][ T5994]  dump_stack_lvl+0x168/0x230
[  215.746894][ T5994]  ? show_regs_print_info+0x20/0x20
[  215.752367][ T5994]  ? load_image+0x3b0/0x3b0
[  215.756920][ T5994]  sysfs_create_dir_ns+0x252/0x280
[  215.762074][ T5994]  ? __lock_acquire+0x7c60/0x7c60
[  215.767383][ T5994]  ? sysfs_warn_dup+0xa0/0xa0
[  215.772113][ T5994]  ? do_raw_spin_unlock+0x11d/0x230
[  215.777567][ T5994]  kobject_add_internal+0x662/0xd00
[  215.782909][ T5994]  kobject_init_and_add+0x122/0x190
[  215.787768][ T5996] loop1: detected capacity change from 0 to 32768
[  215.788243][ T5994]  ? lockdep_softirqs_off+0x420/0x420
[  215.788283][ T5994]  ? kobject_add+0x210/0x210
[  215.788310][ T5994]  ? __init_swait_queue_head+0xa5/0x150
[  215.811067][ T5994]  gfs2_sys_fs_add+0x234/0x480
[  215.815959][ T5994]  ? gfs2_recover_set+0x240/0x240
[  215.821015][ T5994]  ? snprintf+0xd7/0x120
[  215.825302][ T5994]  ? __free_pages+0x95/0x1a0
[  215.830118][ T5994]  ? vscnprintf+0x80/0x80
[  215.835037][ T5994]  gfs2_fill_super+0x128d/0x1f50
[  215.840027][ T5994]  ? gfs2_reconfigure+0xcd0/0xcd0
[  215.845392][ T5994]  ? preempt_count_add+0x8d/0x190
[  215.850479][ T5994]  ? sb_set_blocksize+0xa5/0xe0
[  215.855377][ T5994]  get_tree_bdev+0x3f1/0x610
[  215.860090][ T5994]  ? gfs2_reconfigure+0xcd0/0xcd0
[  215.865241][ T5994]  gfs2_get_tree+0x4d/0x1e0
[  215.870386][ T5994]  vfs_get_tree+0x88/0x270
[  215.875044][ T5994]  do_new_mount+0x24a/0xa40
[  215.879693][ T5994]  __se_sys_mount+0x2d6/0x3c0
[  215.884721][ T5994]  ? __x64_sys_mount+0xc0/0xc0
[  215.889561][ T5994]  ? lockdep_hardirqs_on+0x94/0x140
[  215.895093][ T5994]  ? __x64_sys_mount+0x1c/0xc0
[  215.900084][ T5994]  do_syscall_64+0x4c/0xa0
[  215.904712][ T5994]  ? clear_bhb_loop+0x30/0x80
[  215.909421][ T5994]  ? clear_bhb_loop+0x30/0x80
[  215.914136][ T5994]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  215.920057][ T5994] RIP: 0033:0x7f9435efdefa
[  215.924652][ T5994] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  215.932481][ T6000] loop4: detected capacity change from 0 to 32768
[  215.944898][ T5994] RSP: 002b:00007f943517be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  215.944926][ T5994] RAX: ffffffffffffffda RBX: 00007f943517bef0 RCX: 00007f9435efdefa
[  215.944941][ T5994] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f943517beb0
[  215.944955][ T5994] RBP: 0000000020000000 R08: 00007f943517bef0 R09: 0000000000008c1b
[  215.944969][ T5994] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  215.944982][ T5994] R13: 00007f943517beb0 R14: 000000000001272b R15: 0000000020000240
[  215.945012][ T5994]  </TASK>
[  216.019467][ T6000] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  216.025110][ T5994] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  216.044481][ T6000] CPU: 1 PID: 6000 Comm: syz.4.156 Not tainted syzkaller #0
[  216.048339][ T5994] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  216.051851][ T6000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  216.066626][ T5994] syz.0.155 (5994): drop_caches: 2
[  216.069173][ T6000] Call Trace:
[  216.069183][ T6000]  <TASK>
[  216.069191][ T6000]  dump_stack_lvl+0x168/0x230
[  216.069225][ T6000]  ? show_regs_print_info+0x20/0x20
[  216.069250][ T6000]  ? load_image+0x3b0/0x3b0
[  216.069287][ T6000]  sysfs_create_dir_ns+0x252/0x280
[  216.100794][ T6000]  ? __lock_acquire+0x7c60/0x7c60
[  216.106052][ T6000]  ? sysfs_warn_dup+0xa0/0xa0
[  216.110957][ T6000]  ? do_raw_spin_unlock+0x11d/0x230
[  216.116463][ T6000]  kobject_add_internal+0x662/0xd00
[  216.120527][ T5998] loop3: detected capacity change from 0 to 32768
[  216.121822][ T6000]  kobject_init_and_add+0x122/0x190
[  216.134604][ T6000]  ? lockdep_softirqs_off+0x420/0x420
[  216.140031][ T6000]  ? kobject_add+0x210/0x210
[  216.144677][ T6000]  ? __init_swait_queue_head+0xa5/0x150
[  216.150289][ T6000]  gfs2_sys_fs_add+0x234/0x480
[  216.155386][ T6000]  ? gfs2_recover_set+0x240/0x240
[  216.160563][ T6000]  ? snprintf+0xd7/0x120
[  216.165043][ T6000]  ? __free_pages+0x95/0x1a0
[  216.169764][ T6000]  ? vscnprintf+0x80/0x80
[  216.173039][ T5998] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  216.174187][ T6000]  gfs2_fill_super+0x128d/0x1f50
[  216.187452][ T6000]  ? gfs2_reconfigure+0xcd0/0xcd0
[  216.192651][ T6000]  ? preempt_count_add+0x8d/0x190
[  216.198065][ T6000]  ? sb_set_blocksize+0xa5/0xe0
[  216.202978][ T6000]  get_tree_bdev+0x3f1/0x610
[  216.207702][ T6000]  ? gfs2_reconfigure+0xcd0/0xcd0
[  216.212956][ T6000]  gfs2_get_tree+0x4d/0x1e0
[  216.217587][ T6000]  vfs_get_tree+0x88/0x270
[  216.222043][ T6000]  do_new_mount+0x24a/0xa40
[  216.226595][ T6000]  __se_sys_mount+0x2d6/0x3c0
[  216.231500][ T6000]  ? __x64_sys_mount+0xc0/0xc0
[  216.236301][ T6000]  ? lockdep_hardirqs_on+0x94/0x140
[  216.241532][ T6000]  ? __x64_sys_mount+0x1c/0xc0
[  216.246423][ T6000]  do_syscall_64+0x4c/0xa0
[  216.250985][ T6000]  ? clear_bhb_loop+0x30/0x80
[  216.255782][ T6000]  ? clear_bhb_loop+0x30/0x80
[  216.261020][ T6000]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  216.266958][ T6000] RIP: 0033:0x7f7b6e11defa
[  216.271538][ T6000] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  216.291350][ T6000] RSP: 002b:00007f7b6d39be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  216.299891][ T6000] RAX: ffffffffffffffda RBX: 00007f7b6d39bef0 RCX: 00007f7b6e11defa
[  216.308000][ T6000] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b6d39beb0
[  216.316180][ T6000] RBP: 0000000020000000 R08: 00007f7b6d39bef0 R09: 0000000000008c1b
[  216.324429][ T6000] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  216.332637][ T6000] R13: 00007f7b6d39beb0 R14: 000000000001272b R15: 0000000020000240
[  216.340840][ T6000]  </TASK>
[  216.351923][ T5998] CPU: 1 PID: 5998 Comm: syz.3.158 Not tainted syzkaller #0
[  216.356948][ T5996] sysfs: cannot create duplicate filename '/fs/gfs2/statfs_quantum'
[  216.359486][ T5998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  216.359501][ T5998] Call Trace:
[  216.359508][ T5998]  <TASK>
[  216.359516][ T5998]  dump_stack_lvl+0x168/0x230
[  216.359550][ T5998]  ? show_regs_print_info+0x20/0x20
[  216.359575][ T5998]  ? load_image+0x3b0/0x3b0
[  216.388141][ T5992] gfs2: fsid=statfs_quantum.s: first mount done, others may mount
[  216.389261][ T5998]  sysfs_create_dir_ns+0x252/0x280
[  216.412205][ T5998]  ? __lock_acquire+0x7c60/0x7c60
[  216.417489][ T5998]  ? sysfs_warn_dup+0xa0/0xa0
[  216.422311][ T5998]  ? do_raw_spin_unlock+0x11d/0x230
[  216.427551][ T5998]  kobject_add_internal+0x662/0xd00
[  216.432788][ T5998]  kobject_init_and_add+0x122/0x190
[  216.438103][ T5998]  ? lockdep_softirqs_off+0x420/0x420
[  216.443523][ T5998]  ? kobject_add+0x210/0x210
[  216.448159][ T5998]  ? __init_swait_queue_head+0xa5/0x150
[  216.453844][ T5998]  gfs2_sys_fs_add+0x234/0x480
[  216.458837][ T5998]  ? gfs2_recover_set+0x240/0x240
[  216.463900][ T5998]  ? snprintf+0xd7/0x120
[  216.468181][ T5998]  ? __free_pages+0x95/0x1a0
[  216.472831][ T5998]  ? vscnprintf+0x80/0x80
[  216.477222][ T5998]  gfs2_fill_super+0x128d/0x1f50
[  216.482419][ T5998]  ? gfs2_reconfigure+0xcd0/0xcd0
[  216.487840][ T5998]  ? preempt_count_add+0x8d/0x190
[  216.492935][ T5998]  ? sb_set_blocksize+0xa5/0xe0
[  216.497915][ T5998]  get_tree_bdev+0x3f1/0x610
[  216.502545][ T5998]  ? gfs2_reconfigure+0xcd0/0xcd0
[  216.507940][ T5998]  gfs2_get_tree+0x4d/0x1e0
[  216.512582][ T5998]  vfs_get_tree+0x88/0x270
[  216.517129][ T5998]  do_new_mount+0x24a/0xa40
[  216.521849][ T5998]  __se_sys_mount+0x2d6/0x3c0
[  216.526641][ T5998]  ? __x64_sys_mount+0xc0/0xc0
[  216.531711][ T5998]  ? lockdep_hardirqs_on+0x94/0x140
[  216.536946][ T5998]  ? __x64_sys_mount+0x1c/0xc0
[  216.541745][ T5998]  do_syscall_64+0x4c/0xa0
[  216.546194][ T5998]  ? clear_bhb_loop+0x30/0x80
[  216.550911][ T5998]  ? clear_bhb_loop+0x30/0x80
[  216.555740][ T5998]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  216.561885][ T5998] RIP: 0033:0x7fa866a5befa
[  216.566415][ T5998] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  216.586219][ T5998] RSP: 002b:00007fa865cd9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  216.594682][ T5998] RAX: ffffffffffffffda RBX: 00007fa865cd9ef0 RCX: 00007fa866a5befa
[  216.602771][ T5998] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa865cd9eb0
[  216.611502][ T5998] RBP: 0000000020000000 R08: 00007fa865cd9ef0 R09: 0000000000008c1b
[  216.619956][ T5998] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  216.628305][ T5998] R13: 00007fa865cd9eb0 R14: 000000000001272b R15: 0000000020000240
[  216.636844][ T5998]  </TASK>
[  216.640098][ T5996] CPU: 0 PID: 5996 Comm: syz.1.157 Not tainted syzkaller #0
[  216.648045][ T5996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  216.658670][ T5996] Call Trace:
[  216.662440][ T5996]  <TASK>
[  216.665497][ T5996]  dump_stack_lvl+0x168/0x230
[  216.670227][ T5996]  ? show_regs_print_info+0x20/0x20
[  216.675473][ T5996]  ? load_image+0x3b0/0x3b0
[  216.680030][ T5996]  sysfs_create_dir_ns+0x252/0x280
[  216.685178][ T5996]  ? __lock_acquire+0x7c60/0x7c60
[  216.690593][ T5996]  ? sysfs_warn_dup+0xa0/0xa0
[  216.695413][ T5996]  ? do_raw_spin_unlock+0x11d/0x230
[  216.700743][ T5996]  kobject_add_internal+0x662/0xd00
[  216.705986][ T5996]  kobject_init_and_add+0x122/0x190
[  216.711453][ T5996]  ? lockdep_softirqs_off+0x420/0x420
[  216.717012][ T5996]  ? kobject_add+0x210/0x210
[  216.721766][ T5996]  ? __init_swait_queue_head+0xa5/0x150
[  216.727804][ T5996]  gfs2_sys_fs_add+0x234/0x480
[  216.732627][ T5996]  ? gfs2_recover_set+0x240/0x240
[  216.737889][ T5996]  ? snprintf+0xd7/0x120
[  216.742459][ T5996]  ? __free_pages+0x95/0x1a0
[  216.747173][ T5996]  ? vscnprintf+0x80/0x80
[  216.751778][ T5996]  gfs2_fill_super+0x128d/0x1f50
[  216.756781][ T5996]  ? gfs2_reconfigure+0xcd0/0xcd0
[  216.761937][ T5996]  ? preempt_count_add+0x8d/0x190
[  216.767581][ T5996]  ? sb_set_blocksize+0xa5/0xe0
[  216.772576][ T5996]  get_tree_bdev+0x3f1/0x610
[  216.777979][ T5996]  ? gfs2_reconfigure+0xcd0/0xcd0
[  216.783274][ T5996]  gfs2_get_tree+0x4d/0x1e0
[  216.787907][ T5996]  vfs_get_tree+0x88/0x270
[  216.792421][ T5996]  do_new_mount+0x24a/0xa40
[  216.797184][ T5996]  __se_sys_mount+0x2d6/0x3c0
[  216.802009][ T5996]  ? __x64_sys_mount+0xc0/0xc0
[  216.806982][ T5996]  ? lockdep_hardirqs_on+0x94/0x140
[  216.812267][ T5996]  ? __x64_sys_mount+0x1c/0xc0
[  216.817180][ T5996]  do_syscall_64+0x4c/0xa0
[  216.821644][ T5996]  ? clear_bhb_loop+0x30/0x80
[  216.826456][ T5996]  ? clear_bhb_loop+0x30/0x80
[  216.831288][ T5996]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  216.837239][ T5996] RIP: 0033:0x7f049eb23efa
[  216.841722][ T5996] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48
[  216.862867][ T5996] RSP: 002b:00007f049dda1e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  216.871575][ T5996] RAX: ffffffffffffffda RBX: 00007f049dda1ef0 RCX: 00007f049eb23efa
[  216.879589][ T5996] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f049dda1eb0
[  216.887677][ T5996] RBP: 0000000020000000 R08: 00007f049dda1ef0 R09: 0000000000008c1b
[  216.895682][ T5996] R10: 0000000000008c1b R11: 0000000000000246 R12: 0000000020000100
[  216.903699][ T5996] R13: 00007f049dda1eb0 R14: 000000000001272b R15: 0000000020000240
[  216.911724][ T5996]  </TASK>
[  216.967948][ T6000] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  217.004719][ T6000] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  217.054669][ T5996] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  217.077437][ T5996] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  217.094976][ T5998] kobject_add_internal failed for statfs_quantum with -EEXIST, don't try to register things with the same name in the same directory.
[  217.111234][ T5998] gfs2: fsid=statfs_quantum: error -17 adding sysfs files
[  217.327110][ T6000] ==================================================================
[  217.335564][ T6000] BUG: KASAN: use-after-free in gfs2_qd_shrink_scan+0x61a/0x820
[  217.343551][ T6000] Write of size 4 at addr ffff888067588a70 by task syz.4.156/6000
[  217.351659][ T6000] 
[  217.354093][ T6000] CPU: 1 PID: 6000 Comm: syz.4.156 Not tainted syzkaller #0
[  217.361598][ T6000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  217.367399][ T5996] syz.1.157 (5996): drop_caches: 2
[  217.372684][ T6000] Call Trace:
[  217.372740][ T6000]  <TASK>
[  217.384242][ T6000]  dump_stack_lvl+0x168/0x230
[  217.388964][ T6000]  ? show_regs_print_info+0x20/0x20
[  217.394396][ T6000]  ? load_image+0x3b0/0x3b0
[  217.399362][ T6000]  ? _raw_spin_lock_irqsave+0xb0/0xf0
[  217.404857][ T6000]  ? __wake_up+0x116/0x180
[  217.409306][ T6000]  print_address_description+0x60/0x2d0
[  217.414993][ T6000]  ? gfs2_qd_shrink_scan+0x61a/0x820
[  217.420488][ T6000]  kasan_report+0xdf/0x130
[  217.424942][ T6000]  ? gfs2_qd_shrink_scan+0x61a/0x820
[  217.430272][ T6000]  kasan_check_range+0x27b/0x290
[  217.435364][ T6000]  gfs2_qd_shrink_scan+0x61a/0x820
[  217.440532][ T6000]  ? gfs2_qd_shrink_count+0x100/0x100
[  217.446140][ T6000]  do_shrink_slab+0x510/0xd00
[  217.450966][ T6000]  shrink_slab+0x1b1/0x770
[  217.455434][ T6000]  ? drop_slab_node+0x180/0x180
[  217.460428][ T6000]  ? mem_cgroup_iter+0x345/0x480
[  217.465854][ T6000]  drop_slab_node+0xf3/0x180
[  217.469511][ T6002] loop0: detected capacity change from 0 to 32768
[  217.470859][ T6000]  drop_slab+0x81/0x110
[  217.470892][ T6000]  drop_caches_sysctl_handler+0xbe/0x160
[  217.470921][ T6000]  proc_sys_call_handler+0x458/0x6c0
[  217.493140][ T6000]  ? proc_sys_open+0x260/0x260
[  217.498063][ T6000]  ? __mutex_lock_common+0x431/0x2390
[  217.500918][ T5998] syz.3.158 (5998): drop_caches: 2
[  217.503477][ T6000]  do_iter_readv_writev+0x497/0x600
[  217.513902][ T6000]  ? generic_file_rw_checks+0x280/0x280
[  217.519877][ T6000]  ? common_file_perm+0x171/0x1c0
2025/11/20 09:01:17 executed programs: 156
[  217.525007][ T6000]  ? fsnotify_perm+0x5d/0x560
[  217.529863][ T6000]  ? security_file_permission+0x75/0xa0
[  217.535553][ T6000]  do_iter_write+0x205/0x7b0
[  217.540317][ T6000]  do_writev+0x254/0x410
[  217.544933][ T6000]  ? do_readv+0x3e0/0x3e0
[  217.549511][ T6000]  ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[  217.555694][ T6000]  ? lock_chain_count+0x20/0x20
[  217.560590][ T6000]  ? vtime_user_exit+0x2dc/0x400
[  217.565666][ T6000]  ? lockdep_hardirqs_on+0x94/0x140
[  217.571224][ T6000]  do_syscall_64+0x4c/0xa0
[  217.575678][ T6000]  ? clear_bhb_loop+0x30/0x80
[  217.580406][ T6000]  ? clear_bhb_loop+0x30/0x80
[  217.585211][ T6000]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  217.591210][ T6000] RIP: 0033:0x7f7b6e11c759
[  217.596038][ T6000] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[  217.615948][ T6000] RSP: 002b:00007f7b6d39c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
[  217.624417][ T6000] RAX: ffffffffffffffda RBX: 00007f7b6e2d3f80 RCX: 00007f7b6e11c759
[  217.632606][ T6000] RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000003
[  217.640617][ T6000] RBP: 00007f7b6e18f75e R08: 0000000000000000 R09: 0000000000000000
[  217.648711][ T6000] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[  217.656725][ T6000] R13: 0000000000000000 R14: 00007f7b6e2d3f80 R15: 00007ffefad35c98
[  217.664753][ T6000]  </TASK>
[  217.667809][ T6000] 
[  217.670239][ T6000] Allocated by task 5992:
[  217.674598][ T6000]  __kasan_kmalloc+0xb5/0xf0
[  217.679229][ T6000]  gfs2_fill_super+0x13f/0x1f50
[  217.684159][ T6000]  get_tree_bdev+0x3f1/0x610
[  217.689197][ T6000]  gfs2_get_tree+0x4d/0x1e0
[  217.693832][ T6000]  vfs_get_tree+0x88/0x270
[  217.698331][ T6000]  do_new_mount+0x24a/0xa40
[  217.702875][ T6000]  __se_sys_mount+0x2d6/0x3c0
[  217.707721][ T6000]  do_syscall_64+0x4c/0xa0
[  217.712177][ T6000]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  217.718321][ T6000] 
[  217.720686][ T6000] Freed by task 5019:
[  217.724680][ T6000]  kasan_set_track+0x4b/0x70
[  217.729422][ T6000]  kasan_set_free_info+0x1f/0x40
[  217.734422][ T6000]  ____kasan_slab_free+0xd5/0x110
[  217.739495][ T6000]  slab_free_freelist_hook+0xea/0x170
[  217.744901][ T6000]  kfree+0xef/0x2a0
[  217.748865][ T6000]  generic_shutdown_super+0x130/0x300
[  217.754372][ T6000]  kill_block_super+0x7c/0xe0
[  217.759097][ T6000]  deactivate_locked_super+0x93/0xf0
[  217.764438][ T6000]  cleanup_mnt+0x418/0x4d0
[  217.769152][ T6000]  task_work_run+0x125/0x1a0
[  217.773778][ T6000]  exit_to_user_mode_loop+0x10f/0x130
[  217.779182][ T6000]  exit_to_user_mode_prepare+0xee/0x180
[  217.784759][ T6000]  syscall_exit_to_user_mode+0x16/0x40
[  217.790426][ T6000]  do_syscall_64+0x58/0xa0
[  217.794876][ T6000]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  217.800885][ T6000] 
[  217.803234][ T6000] Last potentially related work creation:
[  217.809056][ T6000]  kasan_save_stack+0x35/0x60
[  217.813853][ T6000]  kasan_record_aux_stack+0xb8/0x100
[  217.819264][ T6000]  insert_work+0x54/0x3d0
[  217.823752][ T6000]  __queue_work+0x9c5/0xd50
[  217.828280][ T6000]  queue_work_on+0x11d/0x1d0
[  217.832983][ T6000]  macvlan_handle_frame+0xe0c/0x1130
[  217.838301][ T6000]  __netif_receive_skb_core+0xfb0/0x35d0
[  217.844060][ T6000]  __netif_receive_skb+0x74/0x290
[  217.849489][ T6000]  process_backlog+0x364/0x780
[  217.854818][ T6000]  __napi_poll+0xc0/0x430
[  217.859334][ T6000]  net_rx_action+0x4a8/0x9c0
[  217.864154][ T6000]  handle_softirqs+0x328/0x820
[  217.869128][ T6000]  run_ksoftirqd+0x98/0xf0
[  217.873579][ T6000]  smpboot_thread_fn+0x4f6/0x970
[  217.878560][ T6000]  kthread+0x436/0x520
[  217.882790][ T6000]  ret_from_fork+0x1f/0x30
[  217.887244][ T6000] 
[  217.889693][ T6000] Second to last potentially related work creation:
[  217.896566][ T6000]  kasan_save_stack+0x35/0x60
[  217.901323][ T6000]  kasan_record_aux_stack+0xb8/0x100
[  217.906655][ T6000]  insert_work+0x54/0x3d0
[  217.911026][ T6000]  __queue_work+0x9c5/0xd50
[  217.915762][ T6000]  queue_work_on+0x11d/0x1d0
[  217.920704][ T6000]  macvlan_handle_frame+0xe0c/0x1130
[  217.926140][ T6000]  __netif_receive_skb_core+0xfb0/0x35d0
[  217.931905][ T6000]  __netif_receive_skb+0x74/0x290
[  217.937148][ T6000]  process_backlog+0x364/0x780
[  217.941966][ T6000]  __napi_poll+0xc0/0x430
[  217.946512][ T6000]  net_rx_action+0x4a8/0x9c0
[  217.951235][ T6000]  handle_softirqs+0x328/0x820
[  217.956032][ T6000]  run_ksoftirqd+0x98/0xf0
[  217.960609][ T6000]  smpboot_thread_fn+0x4f6/0x970
[  217.965588][ T6000]  kthread+0x436/0x520
[  217.969721][ T6000]  ret_from_fork+0x1f/0x30
[  217.974275][ T6000] 
[  217.976795][ T6000] The buggy address belongs to the object at ffff888067588000
[  217.976795][ T6000]  which belongs to the cache kmalloc-8k of size 8192
[  217.991201][ T6000] The buggy address is located 2672 bytes inside of
[  217.991201][ T6000]  8192-byte region [ffff888067588000, ffff88806758a000)
[  218.005172][ T6000] The buggy address belongs to the page:
[  218.010931][ T6000] page:ffffea00019d6200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x67588
[  218.021420][ T6000] head:ffffea00019d6200 order:3 compound_mapcount:0 compound_pincount:0
[  218.029779][ T6000] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
[  218.038071][ T6000] raw: 00fff00000010200 0000000000000000 0000000100000001 ffff888016842280
[  218.046689][ T6000] raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
[  218.055387][ T6000] page dumped because: kasan: bad access detected
[  218.061877][ T6000] page_owner tracks the page as allocated
[  218.068218][ T6000] page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4889, ts 113467502167, free_ts 110528793509
[  218.089813][ T6000]  get_page_from_freelist+0x1b77/0x1c60
[  218.095587][ T6000]  __alloc_pages+0x1e1/0x470
[  218.100310][ T6000]  new_slab+0xc0/0x4b0
[  218.104508][ T6000]  ___slab_alloc+0x81e/0xdf0
[  218.109316][ T6000]  kmem_cache_alloc_trace+0x1a5/0x2a0
[  218.115001][ T6000]  macvlan_common_newlink+0x498/0x17e0
[  218.121120][ T6000]  rtnl_newlink+0x114c/0x17d0
[  218.126073][ T6000]  rtnetlink_rcv_msg+0x7ff/0xe90
[  218.131661][ T6000]  netlink_rcv_skb+0x1e0/0x430
[  218.136552][ T6000]  netlink_unicast+0x774/0x920
[  218.141580][ T6000]  netlink_sendmsg+0x8ab/0xbc0
[  218.146404][ T6000]  __sys_sendto+0x423/0x580
[  218.151059][ T6000]  __x64_sys_sendto+0xda/0xf0
[  218.155942][ T6000]  do_syscall_64+0x4c/0xa0
[  218.160525][ T6000]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  218.166812][ T6000] page last free stack trace:
[  218.171639][ T6000]  free_unref_page_prepare+0x637/0x6c0
[  218.177136][ T6000]  free_unref_page_list+0x122/0x7e0
[  218.182385][ T6000]  release_pages+0x184b/0x1bb0
[  218.187268][ T6000]  tlb_finish_mmu+0x164/0x2e0
[  218.191975][ T6000]  unmap_region+0x315/0x360
[  218.196502][ T6000]  __do_munmap+0x9d3/0xdc0
[  218.201053][ T6000]  __vm_munmap+0x137/0x230
[  218.205508][ T6000]  __x64_sys_munmap+0x67/0x70
[  218.210366][ T6000]  do_syscall_64+0x4c/0xa0
[  218.214810][ T6000]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  218.216039][ T6007] loop3: detected capacity change from 0 to 32768
[  218.220730][ T6000] 
[  218.220737][ T6000] Memory state around the buggy address:
[  218.220748][ T6000]  ffff888067588900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  218.220762][ T6000]  ffff888067588980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  218.220775][ T6000] >ffff888067588a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  218.220786][ T6000]                                                              ^
[  218.220797][ T6000]  ffff888067588a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  218.220810][ T6000]  ffff888067588b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  218.220821][ T6000] ==================================================================
[  218.220830][ T6000] Disabling lock debugging due to kernel taint
[  218.303347][ T6000] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[  218.310595][ T6000] CPU: 1 PID: 6000 Comm: syz.4.156 Tainted: G    B             syzkaller #0
[  218.319301][ T6000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[  218.329728][ T6000] Call Trace:
[  218.330353][ T6006] loop1: detected capacity change from 0 to 32768
[  218.333028][ T6000]  <TASK>
[  218.333036][ T6000]  dump_stack_lvl+0x168/0x230
[  218.347118][ T6000]  ? show_regs_print_info+0x20/0x20
[  218.352591][ T6000]  ? load_image+0x3b0/0x3b0
[  218.357272][ T6000]  panic+0x2c9/0x7f0
[  218.361648][ T6000]  ? bpf_jit_dump+0xd0/0xd0
[  218.366436][ T6000]  ? _raw_spin_unlock_irqrestore+0xf6/0x100
[  218.372346][ T6000]  ? _raw_spin_unlock+0x40/0x40
[  218.377212][ T6000]  ? gfs2_qd_shrink_scan+0x61a/0x820
[  218.382792][ T6000]  check_panic_on_warn+0x80/0xa0
[  218.387880][ T6000]  ? gfs2_qd_shrink_scan+0x61a/0x820
[  218.393314][ T6000]  end_report+0x6d/0xf0
[  218.397512][ T6000]  kasan_report+0x102/0x130
[  218.402036][ T6000]  ? gfs2_qd_shrink_scan+0x61a/0x820
[  218.407560][ T6000]  kasan_check_range+0x27b/0x290
[  218.412510][ T6000]  gfs2_qd_shrink_scan+0x61a/0x820
[  218.417648][ T6000]  ? gfs2_qd_shrink_count+0x100/0x100
[  218.423095][ T6000]  do_shrink_slab+0x510/0xd00
[  218.427961][ T6000]  shrink_slab+0x1b1/0x770
[  218.432385][ T6000]  ? drop_slab_node+0x180/0x180
[  218.437241][ T6000]  ? mem_cgroup_iter+0x345/0x480
[  218.442282][ T6000]  drop_slab_node+0xf3/0x180
[  218.446913][ T6000]  drop_slab+0x81/0x110
[  218.451082][ T6000]  drop_caches_sysctl_handler+0xbe/0x160
[  218.456752][ T6000]  proc_sys_call_handler+0x458/0x6c0
[  218.462166][ T6000]  ? proc_sys_open+0x260/0x260
[  218.466939][ T6000]  ? __mutex_lock_common+0x431/0x2390
[  218.472405][ T6000]  do_iter_readv_writev+0x497/0x600
[  218.477621][ T6000]  ? generic_file_rw_checks+0x280/0x280
[  218.483181][ T6000]  ? common_file_perm+0x171/0x1c0
[  218.488737][ T6000]  ? fsnotify_perm+0x5d/0x560
[  218.493437][ T6000]  ? security_file_permission+0x75/0xa0
[  218.499139][ T6000]  do_iter_write+0x205/0x7b0
[  218.503752][ T6000]  do_writev+0x254/0x410
[  218.508159][ T6000]  ? do_readv+0x3e0/0x3e0
[  218.512651][ T6000]  ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[  218.519214][ T6000]  ? lock_chain_count+0x20/0x20
[  218.524247][ T6000]  ? vtime_user_exit+0x2dc/0x400
[  218.529195][ T6000]  ? lockdep_hardirqs_on+0x94/0x140
[  218.534796][ T6000]  do_syscall_64+0x4c/0xa0
[  218.539317][ T6000]  ? clear_bhb_loop+0x30/0x80
[  218.544008][ T6000]  ? clear_bhb_loop+0x30/0x80
[  218.548739][ T6000]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[  218.554800][ T6000] RIP: 0033:0x7f7b6e11c759
[  218.559336][ T6000] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[  218.579717][ T6000] RSP: 002b:00007f7b6d39c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
[  218.588371][ T6000] RAX: ffffffffffffffda RBX: 00007f7b6e2d3f80 RCX: 00007f7b6e11c759
[  218.596700][ T6000] RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000003
[  218.604890][ T6000] RBP: 00007f7b6e18f75e R08: 0000000000000000 R09: 0000000000000000
[  218.613025][ T6000] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[  218.621268][ T6000] R13: 0000000000000000 R14: 00007f7b6e2d3f80 R15: 00007ffefad35c98
[  218.629401][ T6000]  </TASK>
[  218.632933][ T6000] Kernel Offset: disabled
[  218.637336][ T6000] Rebooting in 86400 seconds..