change from 0 to 32768
[  415.659255][ T6634] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  415.659273][ T6634] CPU: 0 UID: 0 PID: 6634 Comm: syz.1.236 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  415.659291][ T6634] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  415.659302][ T6634] Call Trace:
[  415.659309][ T6634]  <TASK>
[  415.659316][ T6634]  dump_stack_lvl+0xe8/0x150
[  415.659346][ T6634]  sysfs_create_dir_ns+0x271/0x2a0
[  415.659368][ T6634]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  415.659389][ T6634]  ? rt_spin_unlock+0x163/0x200
[  415.659407][ T6634]  kobject_add_internal+0x62c/0xce0
[  415.659427][ T6634]  kobject_init_and_add+0x12b/0x1a0
[  415.659531][ T6634]  ? __pfx_kobject_init_and_add+0x10/0x10
[  415.659559][ T6634]  ? __raw_spin_lock_init+0x45/0x100
[  415.659580][ T6634]  ? __init_swait_queue_head+0xa8/0x150
[  415.659608][ T6634]  gfs2_sys_fs_add+0x257/0x480
[  415.659634][ T6634]  ? is_dynamic_key+0x1aa/0x1c0
[  415.659654][ T6634]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  415.659687][ T6634]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  415.659726][ T6634]  gfs2_fill_super+0x1368/0x20f0
[  415.659759][ T6634]  ? __pfx_gfs2_fill_super+0x10/0x10
[  415.659778][ T6634]  ? rt_spin_unlock+0x157/0x200
[  415.659799][ T6634]  ? sb_set_blocksize+0x11b/0x210
[  415.659823][ T6634]  ? setup_bdev_super+0x586/0x680
[  415.659848][ T6634]  get_tree_bdev_flags+0x430/0x4f0
[  415.659869][ T6634]  ? __pfx_gfs2_fill_super+0x10/0x10
[  415.659889][ T6634]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  415.659913][ T6634]  ? rcu_is_watching+0x15/0xb0
[  415.659941][ T6634]  gfs2_get_tree+0x51/0x1e0
[  415.659964][ T6634]  vfs_get_tree+0x92/0x2a0
[  415.660003][ T6634]  do_new_mount+0x319/0xdc0
[  415.660021][ T6634]  ? cap_capable+0x123/0x460
[  415.660042][ T6634]  ? __pfx_do_new_mount+0x10/0x10
[  415.660062][ T6634]  ? ns_capable+0x89/0xe0
[  415.660085][ T6634]  ? path_mount+0x647/0x1050
[  415.660105][ T6634]  ? user_path_at+0xd4/0x160
[  415.660128][ T6634]  __se_sys_mount+0x31d/0x420
[  415.660152][ T6634]  ? __pfx___se_sys_mount+0x10/0x10
[  415.660175][ T6634]  ? __x64_sys_mount+0x20/0xc0
[  415.660192][ T6634]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  415.660212][ T6634]  do_syscall_64+0x174/0x580
[  415.660233][ T6634]  ? trace_irq_disable+0x3b/0x140
[  415.660253][ T6634]  ? clear_bhb_loop+0x40/0x90
[  415.660273][ T6634]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  415.660291][ T6634] RIP: 0033:0x7f21e707f0ca
[  415.660308][ T6634] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  415.660323][ T6634] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  415.660341][ T6634] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  415.660354][ T6634] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  415.660369][ T6634] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  415.660379][ T6634] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  415.660389][ T6634] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  415.660418][ T6634]  </TASK>
[  415.660459][ T6634] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  415.660472][ T6634] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  416.073275][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  416.179092][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  416.431298][ T4910] Bluetooth: hci1: command 0x0406 tx timeout
[  416.554810][ T6638] loop1: detected capacity change from 0 to 32768
[  416.559891][ T6638] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  416.559910][ T6638] CPU: 0 UID: 0 PID: 6638 Comm: syz.1.238 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  416.559930][ T6638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  416.559940][ T6638] Call Trace:
[  416.559947][ T6638]  <TASK>
[  416.559955][ T6638]  dump_stack_lvl+0xe8/0x150
[  416.559986][ T6638]  sysfs_create_dir_ns+0x271/0x2a0
[  416.560009][ T6638]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  416.560032][ T6638]  ? rt_spin_unlock+0x163/0x200
[  416.560053][ T6638]  kobject_add_internal+0x62c/0xce0
[  416.560076][ T6638]  kobject_init_and_add+0x12b/0x1a0
[  416.560107][ T6638]  ? __pfx_kobject_init_and_add+0x10/0x10
[  416.560134][ T6638]  ? __raw_spin_lock_init+0x45/0x100
[  416.560153][ T6638]  ? __init_swait_queue_head+0xa8/0x150
[  416.560182][ T6638]  gfs2_sys_fs_add+0x257/0x480
[  416.560206][ T6638]  ? is_dynamic_key+0x1aa/0x1c0
[  416.560225][ T6638]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  416.560257][ T6638]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  416.560296][ T6638]  gfs2_fill_super+0x1368/0x20f0
[  416.560328][ T6638]  ? __pfx_gfs2_fill_super+0x10/0x10
[  416.560347][ T6638]  ? rt_spin_unlock+0x157/0x200
[  416.560367][ T6638]  ? sb_set_blocksize+0x11b/0x210
[  416.560401][ T6638]  ? setup_bdev_super+0x586/0x680
[  416.560425][ T6638]  get_tree_bdev_flags+0x430/0x4f0
[  416.560447][ T6638]  ? __pfx_gfs2_fill_super+0x10/0x10
[  416.560466][ T6638]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  416.560490][ T6638]  ? rcu_is_watching+0x15/0xb0
[  416.560517][ T6638]  gfs2_get_tree+0x51/0x1e0
[  416.560541][ T6638]  vfs_get_tree+0x92/0x2a0
[  416.560563][ T6638]  do_new_mount+0x319/0xdc0
[  416.560580][ T6638]  ? cap_capable+0x123/0x460
[  416.560602][ T6638]  ? __pfx_do_new_mount+0x10/0x10
[  416.560621][ T6638]  ? ns_capable+0x89/0xe0
[  416.560644][ T6638]  ? path_mount+0x647/0x1050
[  416.560665][ T6638]  ? user_path_at+0xd4/0x160
[  416.560686][ T6638]  __se_sys_mount+0x31d/0x420
[  416.560709][ T6638]  ? __pfx___se_sys_mount+0x10/0x10
[  416.560732][ T6638]  ? __x64_sys_mount+0x20/0xc0
[  416.560749][ T6638]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  416.560769][ T6638]  do_syscall_64+0x174/0x580
[  416.560790][ T6638]  ? trace_irq_disable+0x3b/0x140
[  416.560808][ T6638]  ? clear_bhb_loop+0x40/0x90
[  416.560830][ T6638]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  416.560848][ T6638] RIP: 0033:0x7f21e707f0ca
[  416.560865][ T6638] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  416.560879][ T6638] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  416.560899][ T6638] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  416.560912][ T6638] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  416.560924][ T6638] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  416.560936][ T6638] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  416.560947][ T6638] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  416.560974][ T6638]  </TASK>
[  416.561007][ T6638] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  416.561020][ T6638] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  416.679167][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  416.749677][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  417.114840][ T6641] loop1: detected capacity change from 0 to 32768
[  417.118349][ T6641] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  417.118369][ T6641] CPU: 1 UID: 0 PID: 6641 Comm: syz.1.239 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  417.118389][ T6641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  417.118399][ T6641] Call Trace:
[  417.118406][ T6641]  <TASK>
[  417.118414][ T6641]  dump_stack_lvl+0xe8/0x150
[  417.118445][ T6641]  sysfs_create_dir_ns+0x271/0x2a0
[  417.118468][ T6641]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  417.118490][ T6641]  ? rt_spin_unlock+0x163/0x200
[  417.118512][ T6641]  kobject_add_internal+0x62c/0xce0
[  417.118535][ T6641]  kobject_init_and_add+0x12b/0x1a0
[  417.118567][ T6641]  ? __pfx_kobject_init_and_add+0x10/0x10
[  417.118594][ T6641]  ? __raw_spin_lock_init+0x45/0x100
[  417.118614][ T6641]  ? __init_swait_queue_head+0xa8/0x150
[  417.118643][ T6641]  gfs2_sys_fs_add+0x257/0x480
[  417.118668][ T6641]  ? is_dynamic_key+0x1aa/0x1c0
[  417.118689][ T6641]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  417.118730][ T6641]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  417.118771][ T6641]  gfs2_fill_super+0x1368/0x20f0
[  417.118804][ T6641]  ? __pfx_gfs2_fill_super+0x10/0x10
[  417.118822][ T6641]  ? rt_spin_unlock+0x157/0x200
[  417.118844][ T6641]  ? sb_set_blocksize+0x11b/0x210
[  417.118869][ T6641]  ? setup_bdev_super+0x586/0x680
[  417.118894][ T6641]  get_tree_bdev_flags+0x430/0x4f0
[  417.118916][ T6641]  ? __pfx_gfs2_fill_super+0x10/0x10
[  417.118939][ T6641]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  417.118961][ T6641]  ? rcu_is_watching+0x15/0xb0
[  417.118988][ T6641]  gfs2_get_tree+0x51/0x1e0
[  417.119011][ T6641]  vfs_get_tree+0x92/0x2a0
[  417.119035][ T6641]  do_new_mount+0x319/0xdc0
[  417.119052][ T6641]  ? cap_capable+0x123/0x460
[  417.119073][ T6641]  ? __pfx_do_new_mount+0x10/0x10
[  417.119093][ T6641]  ? ns_capable+0x89/0xe0
[  417.119117][ T6641]  ? path_mount+0x647/0x1050
[  417.119137][ T6641]  ? user_path_at+0xd4/0x160
[  417.119160][ T6641]  __se_sys_mount+0x31d/0x420
[  417.119183][ T6641]  ? __pfx___se_sys_mount+0x10/0x10
[  417.119207][ T6641]  ? __x64_sys_mount+0x20/0xc0
[  417.119224][ T6641]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  417.119243][ T6641]  do_syscall_64+0x174/0x580
[  417.119265][ T6641]  ? trace_irq_disable+0x3b/0x140
[  417.119286][ T6641]  ? clear_bhb_loop+0x40/0x90
[  417.119307][ T6641]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  417.119325][ T6641] RIP: 0033:0x7f21e707f0ca
[  417.119342][ T6641] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  417.119357][ T6641] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  417.119375][ T6641] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  417.119388][ T6641] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  417.119401][ T6641] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  417.119413][ T6641] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  417.119424][ T6641] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  417.119453][ T6641]  </TASK>
[  417.121731][ T6641] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  417.121749][ T6641] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  417.201574][ T6641] Flush: task=syz.1.239[6641] dev=loop1 state=2
[  417.369720][ T6641] Teardown: task=syz.1.239[6641] dev=loop1 state=2
2026/07/06 08:17:44 executed programs: 225
[  417.762142][ T6644] loop1: detected capacity change from 0 to 32768
[  417.768323][ T6644] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  417.768343][ T6644] CPU: 0 UID: 0 PID: 6644 Comm: syz.1.240 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  417.768362][ T6644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  417.768371][ T6644] Call Trace:
[  417.768378][ T6644]  <TASK>
[  417.768385][ T6644]  dump_stack_lvl+0xe8/0x150
[  417.768416][ T6644]  sysfs_create_dir_ns+0x271/0x2a0
[  417.768439][ T6644]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  417.768461][ T6644]  ? rt_spin_unlock+0x163/0x200
[  417.768483][ T6644]  kobject_add_internal+0x62c/0xce0
[  417.768507][ T6644]  kobject_init_and_add+0x12b/0x1a0
[  417.768538][ T6644]  ? __pfx_kobject_init_and_add+0x10/0x10
[  417.768565][ T6644]  ? __raw_spin_lock_init+0x45/0x100
[  417.768585][ T6644]  ? __init_swait_queue_head+0xa8/0x150
[  417.768612][ T6644]  gfs2_sys_fs_add+0x257/0x480
[  417.768637][ T6644]  ? is_dynamic_key+0x1aa/0x1c0
[  417.768658][ T6644]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  417.768690][ T6644]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  417.768737][ T6644]  gfs2_fill_super+0x1368/0x20f0
[  417.768770][ T6644]  ? __pfx_gfs2_fill_super+0x10/0x10
[  417.768789][ T6644]  ? rt_spin_unlock+0x157/0x200
[  417.768811][ T6644]  ? sb_set_blocksize+0x11b/0x210
[  417.768838][ T6644]  ? setup_bdev_super+0x586/0x680
[  417.768862][ T6644]  get_tree_bdev_flags+0x430/0x4f0
[  417.768883][ T6644]  ? __pfx_gfs2_fill_super+0x10/0x10
[  417.768903][ T6644]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  417.768928][ T6644]  ? rcu_is_watching+0x15/0xb0
[  417.768953][ T6644]  gfs2_get_tree+0x51/0x1e0
[  417.768976][ T6644]  vfs_get_tree+0x92/0x2a0
[  417.768998][ T6644]  do_new_mount+0x319/0xdc0
[  417.769014][ T6644]  ? cap_capable+0x123/0x460
[  417.769035][ T6644]  ? __pfx_do_new_mount+0x10/0x10
[  417.769054][ T6644]  ? ns_capable+0x89/0xe0
[  417.769077][ T6644]  ? path_mount+0x647/0x1050
[  417.769098][ T6644]  ? user_path_at+0xd4/0x160
[  417.769121][ T6644]  __se_sys_mount+0x31d/0x420
[  417.769160][ T6644]  ? __pfx___se_sys_mount+0x10/0x10
[  417.769185][ T6644]  ? __x64_sys_mount+0x20/0xc0
[  417.769201][ T6644]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  417.769217][ T6644]  do_syscall_64+0x174/0x580
[  417.769237][ T6644]  ? trace_irq_disable+0x3b/0x140
[  417.769254][ T6644]  ? clear_bhb_loop+0x40/0x90
[  417.769273][ T6644]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  417.769289][ T6644] RIP: 0033:0x7f21e707f0ca
[  417.769306][ T6644] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  417.769320][ T6644] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  417.769338][ T6644] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  417.769350][ T6644] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  417.769362][ T6644] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  417.769375][ T6644] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  417.769386][ T6644] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  417.769414][ T6644]  </TASK>
[  417.772261][ T6644] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  417.772278][ T6644] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  418.186254][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  418.259360][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  418.641807][ T6648] loop1: detected capacity change from 0 to 32768
[  418.654778][ T6648] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  418.654799][ T6648] CPU: 0 UID: 0 PID: 6648 Comm: syz.1.242 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  418.654819][ T6648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  418.654828][ T6648] Call Trace:
[  418.654835][ T6648]  <TASK>
[  418.654842][ T6648]  dump_stack_lvl+0xe8/0x150
[  418.654873][ T6648]  sysfs_create_dir_ns+0x271/0x2a0
[  418.654896][ T6648]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  418.654918][ T6648]  ? rt_spin_unlock+0x163/0x200
[  418.654939][ T6648]  kobject_add_internal+0x62c/0xce0
[  418.654963][ T6648]  kobject_init_and_add+0x12b/0x1a0
[  418.654993][ T6648]  ? __pfx_kobject_init_and_add+0x10/0x10
[  418.655020][ T6648]  ? __raw_spin_lock_init+0x45/0x100
[  418.655040][ T6648]  ? __init_swait_queue_head+0xa8/0x150
[  418.655068][ T6648]  gfs2_sys_fs_add+0x257/0x480
[  418.655097][ T6648]  ? is_dynamic_key+0x1aa/0x1c0
[  418.655118][ T6648]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  418.655150][ T6648]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  418.655188][ T6648]  gfs2_fill_super+0x1368/0x20f0
[  418.655220][ T6648]  ? __pfx_gfs2_fill_super+0x10/0x10
[  418.655238][ T6648]  ? rt_spin_unlock+0x157/0x200
[  418.655260][ T6648]  ? sb_set_blocksize+0x11b/0x210
[  418.655285][ T6648]  ? setup_bdev_super+0x586/0x680
[  418.655309][ T6648]  get_tree_bdev_flags+0x430/0x4f0
[  418.655330][ T6648]  ? __pfx_gfs2_fill_super+0x10/0x10
[  418.655350][ T6648]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  418.655374][ T6648]  ? rcu_is_watching+0x15/0xb0
[  418.655402][ T6648]  gfs2_get_tree+0x51/0x1e0
[  418.655425][ T6648]  vfs_get_tree+0x92/0x2a0
[  418.655448][ T6648]  do_new_mount+0x319/0xdc0
[  418.655465][ T6648]  ? cap_capable+0x123/0x460
[  418.655486][ T6648]  ? __pfx_do_new_mount+0x10/0x10
[  418.655506][ T6648]  ? ns_capable+0x89/0xe0
[  418.655528][ T6648]  ? path_mount+0x647/0x1050
[  418.655548][ T6648]  ? user_path_at+0xd4/0x160
[  418.655570][ T6648]  __se_sys_mount+0x31d/0x420
[  418.655592][ T6648]  ? __pfx___se_sys_mount+0x10/0x10
[  418.655616][ T6648]  ? __x64_sys_mount+0x20/0xc0
[  418.655632][ T6648]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  418.655651][ T6648]  do_syscall_64+0x174/0x580
[  418.655673][ T6648]  ? trace_irq_disable+0x3b/0x140
[  418.655692][ T6648]  ? clear_bhb_loop+0x40/0x90
[  418.655713][ T6648]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  418.655730][ T6648] RIP: 0033:0x7f21e707f0ca
[  418.655747][ T6648] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  418.655761][ T6648] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  418.655779][ T6648] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  418.655791][ T6648] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  418.655803][ T6648] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  418.655814][ T6648] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  418.655824][ T6648] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  418.655851][ T6648]  </TASK>
[  418.655875][ T6648] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  418.655888][ T6648] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  418.878086][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  418.959285][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  419.215065][ T6651] loop1: detected capacity change from 0 to 32768
[  419.226586][ T6651] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  419.226605][ T6651] CPU: 0 UID: 0 PID: 6651 Comm: syz.1.243 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  419.226626][ T6651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  419.226636][ T6651] Call Trace:
[  419.226643][ T6651]  <TASK>
[  419.226651][ T6651]  dump_stack_lvl+0xe8/0x150
[  419.226682][ T6651]  sysfs_create_dir_ns+0x271/0x2a0
[  419.226703][ T6651]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  419.226726][ T6651]  ? rt_spin_unlock+0x163/0x200
[  419.226747][ T6651]  kobject_add_internal+0x62c/0xce0
[  419.226771][ T6651]  kobject_init_and_add+0x12b/0x1a0
[  419.226802][ T6651]  ? __pfx_kobject_init_and_add+0x10/0x10
[  419.226829][ T6651]  ? __raw_spin_lock_init+0x45/0x100
[  419.226849][ T6651]  ? __init_swait_queue_head+0xa8/0x150
[  419.226877][ T6651]  gfs2_sys_fs_add+0x257/0x480
[  419.226901][ T6651]  ? is_dynamic_key+0x1aa/0x1c0
[  419.226921][ T6651]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  419.226954][ T6651]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  419.226992][ T6651]  gfs2_fill_super+0x1368/0x20f0
[  419.227026][ T6651]  ? __pfx_gfs2_fill_super+0x10/0x10
[  419.227044][ T6651]  ? rt_spin_unlock+0x157/0x200
[  419.227067][ T6651]  ? sb_set_blocksize+0x11b/0x210
[  419.227093][ T6651]  ? setup_bdev_super+0x586/0x680
[  419.227117][ T6651]  get_tree_bdev_flags+0x430/0x4f0
[  419.227140][ T6651]  ? __pfx_gfs2_fill_super+0x10/0x10
[  419.227160][ T6651]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  419.227184][ T6651]  ? rcu_is_watching+0x15/0xb0
[  419.227211][ T6651]  gfs2_get_tree+0x51/0x1e0
[  419.227234][ T6651]  vfs_get_tree+0x92/0x2a0
[  419.227257][ T6651]  do_new_mount+0x319/0xdc0
[  419.227276][ T6651]  ? cap_capable+0x123/0x460
[  419.227297][ T6651]  ? __pfx_do_new_mount+0x10/0x10
[  419.227317][ T6651]  ? ns_capable+0x89/0xe0
[  419.227340][ T6651]  ? path_mount+0x647/0x1050
[  419.227361][ T6651]  ? user_path_at+0xd4/0x160
[  419.227384][ T6651]  __se_sys_mount+0x31d/0x420
[  419.227407][ T6651]  ? __pfx___se_sys_mount+0x10/0x10
[  419.227432][ T6651]  ? __x64_sys_mount+0x20/0xc0
[  419.227449][ T6651]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  419.227468][ T6651]  do_syscall_64+0x174/0x580
[  419.227490][ T6651]  ? trace_irq_disable+0x3b/0x140
[  419.227511][ T6651]  ? clear_bhb_loop+0x40/0x90
[  419.227539][ T6651]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  419.227557][ T6651] RIP: 0033:0x7f21e707f0ca
[  419.227574][ T6651] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  419.227589][ T6651] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  419.227608][ T6651] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  419.227621][ T6651] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  419.227633][ T6651] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  419.227645][ T6651] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  419.227656][ T6651] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  419.227685][ T6651]  </TASK>
[  419.227709][ T6651] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  419.227723][ T6651] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  419.616734][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  419.679066][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  419.683573][ T6654] loop1: detected capacity change from 0 to 32768
[  419.693964][ T6654] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  419.693983][ T6654] CPU: 0 UID: 0 PID: 6654 Comm: syz.1.244 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  419.694003][ T6654] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  419.694014][ T6654] Call Trace:
[  419.694020][ T6654]  <TASK>
[  419.694028][ T6654]  dump_stack_lvl+0xe8/0x150
[  419.694058][ T6654]  sysfs_create_dir_ns+0x271/0x2a0
[  419.694080][ T6654]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  419.694103][ T6654]  ? rt_spin_unlock+0x163/0x200
[  419.694124][ T6654]  kobject_add_internal+0x62c/0xce0
[  419.694148][ T6654]  kobject_init_and_add+0x12b/0x1a0
[  419.694179][ T6654]  ? __pfx_kobject_init_and_add+0x10/0x10
[  419.694206][ T6654]  ? __raw_spin_lock_init+0x45/0x100
[  419.694226][ T6654]  ? __init_swait_queue_head+0xa8/0x150
[  419.694255][ T6654]  gfs2_sys_fs_add+0x257/0x480
[  419.694280][ T6654]  ? is_dynamic_key+0x1aa/0x1c0
[  419.694300][ T6654]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  419.694332][ T6654]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  419.694370][ T6654]  gfs2_fill_super+0x1368/0x20f0
[  419.694402][ T6654]  ? __pfx_gfs2_fill_super+0x10/0x10
[  419.694420][ T6654]  ? rt_spin_unlock+0x157/0x200
[  419.694442][ T6654]  ? sb_set_blocksize+0x11b/0x210
[  419.694468][ T6654]  ? setup_bdev_super+0x586/0x680
[  419.694492][ T6654]  get_tree_bdev_flags+0x430/0x4f0
[  419.694518][ T6654]  ? __pfx_gfs2_fill_super+0x10/0x10
[  419.694538][ T6654]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  419.694563][ T6654]  ? rcu_is_watching+0x15/0xb0
[  419.694591][ T6654]  gfs2_get_tree+0x51/0x1e0
[  419.694614][ T6654]  vfs_get_tree+0x92/0x2a0
[  419.694636][ T6654]  do_new_mount+0x319/0xdc0
[  419.694654][ T6654]  ? cap_capable+0x123/0x460
[  419.694675][ T6654]  ? __pfx_do_new_mount+0x10/0x10
[  419.694695][ T6654]  ? ns_capable+0x89/0xe0
[  419.694719][ T6654]  ? path_mount+0x647/0x1050
[  419.694739][ T6654]  ? user_path_at+0xd4/0x160
[  419.694761][ T6654]  __se_sys_mount+0x31d/0x420
[  419.694784][ T6654]  ? __pfx___se_sys_mount+0x10/0x10
[  419.694808][ T6654]  ? __x64_sys_mount+0x20/0xc0
[  419.694824][ T6654]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  419.694843][ T6654]  do_syscall_64+0x174/0x580
[  419.694865][ T6654]  ? trace_irq_disable+0x3b/0x140
[  419.694885][ T6654]  ? clear_bhb_loop+0x40/0x90
[  419.694906][ T6654]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  419.694923][ T6654] RIP: 0033:0x7f21e707f0ca
[  419.694939][ T6654] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  419.694954][ T6654] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  419.694973][ T6654] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  419.694985][ T6654] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  419.694996][ T6654] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  419.695006][ T6654] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  419.695015][ T6654] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  419.695043][ T6654]  </TASK>
[  419.695065][ T6654] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  419.695078][ T6654] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  419.731532][ T6654] Flush: task=syz.1.244[6654] dev=loop1 state=2
[  419.982245][ T6654] Teardown: task=syz.1.244[6654] dev=loop1 state=2
[  420.389501][ T6657] loop1: detected capacity change from 0 to 32768
[  420.395960][ T6657] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  420.395980][ T6657] CPU: 0 UID: 0 PID: 6657 Comm: syz.1.245 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  420.396000][ T6657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  420.396009][ T6657] Call Trace:
[  420.396016][ T6657]  <TASK>
[  420.396023][ T6657]  dump_stack_lvl+0xe8/0x150
[  420.396053][ T6657]  sysfs_create_dir_ns+0x271/0x2a0
[  420.396073][ T6657]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  420.396092][ T6657]  ? rt_spin_unlock+0x163/0x200
[  420.396109][ T6657]  kobject_add_internal+0x62c/0xce0
[  420.396128][ T6657]  kobject_init_and_add+0x12b/0x1a0
[  420.396152][ T6657]  ? __pfx_kobject_init_and_add+0x10/0x10
[  420.396173][ T6657]  ? __raw_spin_lock_init+0x45/0x100
[  420.396188][ T6657]  ? __init_swait_queue_head+0xa8/0x150
[  420.396210][ T6657]  gfs2_sys_fs_add+0x257/0x480
[  420.396229][ T6657]  ? is_dynamic_key+0x1aa/0x1c0
[  420.396246][ T6657]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  420.396271][ T6657]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  420.396301][ T6657]  gfs2_fill_super+0x1368/0x20f0
[  420.396326][ T6657]  ? __pfx_gfs2_fill_super+0x10/0x10
[  420.396340][ T6657]  ? rt_spin_unlock+0x157/0x200
[  420.396357][ T6657]  ? sb_set_blocksize+0x11b/0x210
[  420.396377][ T6657]  ? setup_bdev_super+0x586/0x680
[  420.396396][ T6657]  get_tree_bdev_flags+0x430/0x4f0
[  420.396420][ T6657]  ? __pfx_gfs2_fill_super+0x10/0x10
[  420.396436][ T6657]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  420.396454][ T6657]  ? rcu_is_watching+0x15/0xb0
[  420.396476][ T6657]  gfs2_get_tree+0x51/0x1e0
[  420.396494][ T6657]  vfs_get_tree+0x92/0x2a0
[  420.396512][ T6657]  do_new_mount+0x319/0xdc0
[  420.396525][ T6657]  ? cap_capable+0x123/0x460
[  420.396541][ T6657]  ? __pfx_do_new_mount+0x10/0x10
[  420.396556][ T6657]  ? ns_capable+0x89/0xe0
[  420.396575][ T6657]  ? path_mount+0x647/0x1050
[  420.396590][ T6657]  ? user_path_at+0xd4/0x160
[  420.396607][ T6657]  __se_sys_mount+0x31d/0x420
[  420.396625][ T6657]  ? __pfx___se_sys_mount+0x10/0x10
[  420.396643][ T6657]  ? __x64_sys_mount+0x20/0xc0
[  420.396656][ T6657]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  420.396671][ T6657]  do_syscall_64+0x174/0x580
[  420.396688][ T6657]  ? trace_irq_disable+0x3b/0x140
[  420.396704][ T6657]  ? clear_bhb_loop+0x40/0x90
[  420.396720][ T6657]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  420.396734][ T6657] RIP: 0033:0x7f21e707f0ca
[  420.396747][ T6657] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  420.396759][ T6657] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  420.396774][ T6657] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  420.396784][ T6657] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  420.396794][ T6657] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  420.396803][ T6657] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  420.396812][ T6657] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  420.396833][ T6657]  </TASK>
[  420.396859][ T6657] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  420.396872][ T6657] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  420.486561][ T6657] Flush: task=syz.1.245[6657] dev=loop1 state=2
[  420.559367][ T6657] Teardown: task=syz.1.245[6657] dev=loop1 state=2
[  420.984205][ T6660] loop1: detected capacity change from 0 to 32768
[  420.995981][ T6660] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  420.996001][ T6660] CPU: 0 UID: 0 PID: 6660 Comm: syz.1.246 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  420.996021][ T6660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  420.996031][ T6660] Call Trace:
[  420.996038][ T6660]  <TASK>
[  420.996045][ T6660]  dump_stack_lvl+0xe8/0x150
[  420.996077][ T6660]  sysfs_create_dir_ns+0x271/0x2a0
[  420.996100][ T6660]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  420.996123][ T6660]  ? rt_spin_unlock+0x163/0x200
[  420.996146][ T6660]  kobject_add_internal+0x62c/0xce0
[  420.996170][ T6660]  kobject_init_and_add+0x12b/0x1a0
[  420.996201][ T6660]  ? __pfx_kobject_init_and_add+0x10/0x10
[  420.996228][ T6660]  ? __raw_spin_lock_init+0x45/0x100
[  420.996248][ T6660]  ? __init_swait_queue_head+0xa8/0x150
[  420.996276][ T6660]  gfs2_sys_fs_add+0x257/0x480
[  420.996300][ T6660]  ? is_dynamic_key+0x1aa/0x1c0
[  420.996321][ T6660]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  420.996353][ T6660]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  420.996399][ T6660]  gfs2_fill_super+0x1368/0x20f0
[  420.996430][ T6660]  ? __pfx_gfs2_fill_super+0x10/0x10
[  420.996448][ T6660]  ? rt_spin_unlock+0x157/0x200
[  420.996470][ T6660]  ? sb_set_blocksize+0x11b/0x210
[  420.996496][ T6660]  ? setup_bdev_super+0x586/0x680
[  420.996519][ T6660]  get_tree_bdev_flags+0x430/0x4f0
[  420.996540][ T6660]  ? __pfx_gfs2_fill_super+0x10/0x10
[  420.996560][ T6660]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  420.996584][ T6660]  ? rcu_is_watching+0x15/0xb0
[  420.996612][ T6660]  gfs2_get_tree+0x51/0x1e0
[  420.996636][ T6660]  vfs_get_tree+0x92/0x2a0
[  420.996659][ T6660]  do_new_mount+0x319/0xdc0
[  420.996675][ T6660]  ? cap_capable+0x123/0x460
[  420.996696][ T6660]  ? __pfx_do_new_mount+0x10/0x10
[  420.996716][ T6660]  ? ns_capable+0x89/0xe0
[  420.996738][ T6660]  ? path_mount+0x647/0x1050
[  420.996757][ T6660]  ? user_path_at+0xd4/0x160
[  420.996778][ T6660]  __se_sys_mount+0x31d/0x420
[  420.996800][ T6660]  ? __pfx___se_sys_mount+0x10/0x10
[  420.996822][ T6660]  ? __x64_sys_mount+0x20/0xc0
[  420.996839][ T6660]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  420.996858][ T6660]  do_syscall_64+0x174/0x580
[  420.996879][ T6660]  ? trace_irq_disable+0x3b/0x140
[  420.996899][ T6660]  ? clear_bhb_loop+0x40/0x90
[  420.996921][ T6660]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  420.996939][ T6660] RIP: 0033:0x7f21e707f0ca
[  420.996956][ T6660] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  420.996971][ T6660] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  420.996993][ T6660] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  420.997006][ T6660] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  420.997018][ T6660] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  420.997030][ T6660] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  420.997042][ T6660] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  420.997070][ T6660]  </TASK>
[  421.000158][ T6660] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  421.000175][ T6660] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  421.177316][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  421.249415][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  421.543249][ T6663] loop1: detected capacity change from 0 to 32768
[  421.565795][ T6663] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  421.565817][ T6663] CPU: 1 UID: 0 PID: 6663 Comm: syz.1.247 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  421.565837][ T6663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  421.565847][ T6663] Call Trace:
[  421.565854][ T6663]  <TASK>
[  421.565862][ T6663]  dump_stack_lvl+0xe8/0x150
[  421.565893][ T6663]  sysfs_create_dir_ns+0x271/0x2a0
[  421.565916][ T6663]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  421.565939][ T6663]  ? rt_spin_unlock+0x163/0x200
[  421.565961][ T6663]  kobject_add_internal+0x62c/0xce0
[  421.565984][ T6663]  kobject_init_and_add+0x12b/0x1a0
[  421.566015][ T6663]  ? __pfx_kobject_init_and_add+0x10/0x10
[  421.566042][ T6663]  ? __raw_spin_lock_init+0x45/0x100
[  421.566062][ T6663]  ? __init_swait_queue_head+0xa8/0x150
[  421.566090][ T6663]  gfs2_sys_fs_add+0x257/0x480
[  421.566114][ T6663]  ? is_dynamic_key+0x1aa/0x1c0
[  421.566135][ T6663]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  421.566166][ T6663]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  421.566205][ T6663]  gfs2_fill_super+0x1368/0x20f0
[  421.566239][ T6663]  ? __pfx_gfs2_fill_super+0x10/0x10
[  421.566257][ T6663]  ? rt_spin_unlock+0x157/0x200
[  421.566277][ T6663]  ? sb_set_blocksize+0x11b/0x210
[  421.566312][ T6663]  ? setup_bdev_super+0x586/0x680
[  421.566335][ T6663]  get_tree_bdev_flags+0x430/0x4f0
[  421.566357][ T6663]  ? __pfx_gfs2_fill_super+0x10/0x10
[  421.566377][ T6663]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  421.566402][ T6663]  ? rcu_is_watching+0x15/0xb0
[  421.566431][ T6663]  gfs2_get_tree+0x51/0x1e0
[  421.566455][ T6663]  vfs_get_tree+0x92/0x2a0
[  421.566478][ T6663]  do_new_mount+0x319/0xdc0
[  421.566495][ T6663]  ? cap_capable+0x123/0x460
[  421.566516][ T6663]  ? __pfx_do_new_mount+0x10/0x10
[  421.566535][ T6663]  ? ns_capable+0x89/0xe0
[  421.566558][ T6663]  ? path_mount+0x647/0x1050
[  421.566579][ T6663]  ? user_path_at+0xd4/0x160
[  421.566601][ T6663]  __se_sys_mount+0x31d/0x420
[  421.566623][ T6663]  ? __pfx___se_sys_mount+0x10/0x10
[  421.566645][ T6663]  ? __x64_sys_mount+0x20/0xc0
[  421.566663][ T6663]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  421.566685][ T6663]  do_syscall_64+0x174/0x580
[  421.566707][ T6663]  ? trace_irq_disable+0x3b/0x140
[  421.566727][ T6663]  ? clear_bhb_loop+0x40/0x90
[  421.566749][ T6663]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  421.566767][ T6663] RIP: 0033:0x7f21e707f0ca
[  421.566784][ T6663] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  421.566798][ T6663] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  421.566817][ T6663] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  421.566829][ T6663] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  421.566841][ T6663] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  421.566853][ T6663] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  421.566864][ T6663] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  421.566892][ T6663]  </TASK>
[  421.566953][ T6663] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  421.566967][ T6663] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  421.626556][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  421.769943][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  422.161645][ T6666] loop1: detected capacity change from 0 to 32768
[  422.167552][ T6666] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  422.167572][ T6666] CPU: 0 UID: 0 PID: 6666 Comm: syz.1.248 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  422.167591][ T6666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  422.167601][ T6666] Call Trace:
[  422.167609][ T6666]  <TASK>
[  422.167616][ T6666]  dump_stack_lvl+0xe8/0x150
[  422.167648][ T6666]  sysfs_create_dir_ns+0x271/0x2a0
[  422.167670][ T6666]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  422.167694][ T6666]  ? rt_spin_unlock+0x163/0x200
[  422.167716][ T6666]  kobject_add_internal+0x62c/0xce0
[  422.167739][ T6666]  kobject_init_and_add+0x12b/0x1a0
[  422.167771][ T6666]  ? __pfx_kobject_init_and_add+0x10/0x10
[  422.167807][ T6666]  ? __raw_spin_lock_init+0x45/0x100
[  422.167828][ T6666]  ? __init_swait_queue_head+0xa8/0x150
[  422.167856][ T6666]  gfs2_sys_fs_add+0x257/0x480
[  422.167881][ T6666]  ? is_dynamic_key+0x1aa/0x1c0
[  422.167901][ T6666]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  422.167934][ T6666]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  422.167973][ T6666]  gfs2_fill_super+0x1368/0x20f0
[  422.168005][ T6666]  ? __pfx_gfs2_fill_super+0x10/0x10
[  422.168024][ T6666]  ? rt_spin_unlock+0x157/0x200
[  422.168045][ T6666]  ? sb_set_blocksize+0x11b/0x210
[  422.168070][ T6666]  ? setup_bdev_super+0x586/0x680
[  422.168099][ T6666]  get_tree_bdev_flags+0x430/0x4f0
[  422.168121][ T6666]  ? __pfx_gfs2_fill_super+0x10/0x10
[  422.168141][ T6666]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  422.168165][ T6666]  ? rcu_is_watching+0x15/0xb0
[  422.168192][ T6666]  gfs2_get_tree+0x51/0x1e0
[  422.168216][ T6666]  vfs_get_tree+0x92/0x2a0
[  422.168240][ T6666]  do_new_mount+0x319/0xdc0
[  422.168257][ T6666]  ? cap_capable+0x123/0x460
[  422.168278][ T6666]  ? __pfx_do_new_mount+0x10/0x10
[  422.168299][ T6666]  ? ns_capable+0x89/0xe0
[  422.168323][ T6666]  ? path_mount+0x647/0x1050
[  422.168343][ T6666]  ? user_path_at+0xd4/0x160
[  422.168366][ T6666]  __se_sys_mount+0x31d/0x420
[  422.168390][ T6666]  ? __pfx___se_sys_mount+0x10/0x10
[  422.168414][ T6666]  ? __x64_sys_mount+0x20/0xc0
[  422.168432][ T6666]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  422.168451][ T6666]  do_syscall_64+0x174/0x580
[  422.168473][ T6666]  ? trace_irq_disable+0x3b/0x140
[  422.168494][ T6666]  ? clear_bhb_loop+0x40/0x90
[  422.168516][ T6666]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  422.168534][ T6666] RIP: 0033:0x7f21e707f0ca
[  422.168551][ T6666] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  422.168565][ T6666] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  422.168584][ T6666] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  422.168597][ T6666] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  422.168609][ T6666] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  422.168621][ T6666] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  422.168632][ T6666] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  422.168660][ T6666]  </TASK>
[  422.168685][ T6666] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  422.168698][ T6666] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  422.419905][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  422.499049][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  422.717273][ T6669] loop1: detected capacity change from 0 to 32768
[  422.728059][ T6669] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  422.728079][ T6669] CPU: 1 UID: 0 PID: 6669 Comm: syz.1.249 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  422.728099][ T6669] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  422.728109][ T6669] Call Trace:
[  422.728117][ T6669]  <TASK>
[  422.728124][ T6669]  dump_stack_lvl+0xe8/0x150
2026/07/06 08:17:49 executed programs: 235
[  422.728155][ T6669]  sysfs_create_dir_ns+0x271/0x2a0
[  422.728178][ T6669]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  422.728210][ T6669]  ? rt_spin_unlock+0x163/0x200
[  422.728233][ T6669]  kobject_add_internal+0x62c/0xce0
[  422.728257][ T6669]  kobject_init_and_add+0x12b/0x1a0
[  422.728286][ T6669]  ? __pfx_kobject_init_and_add+0x10/0x10
[  422.728314][ T6669]  ? __raw_spin_lock_init+0x45/0x100
[  422.728335][ T6669]  ? __init_swait_queue_head+0xa8/0x150
[  422.728364][ T6669]  gfs2_sys_fs_add+0x257/0x480
[  422.728388][ T6669]  ? is_dynamic_key+0x1aa/0x1c0
[  422.728410][ T6669]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  422.728440][ T6669]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  422.728477][ T6669]  gfs2_fill_super+0x1368/0x20f0
[  422.728511][ T6669]  ? __pfx_gfs2_fill_super+0x10/0x10
[  422.728529][ T6669]  ? rt_spin_unlock+0x157/0x200
[  422.728551][ T6669]  ? sb_set_blocksize+0x11b/0x210
[  422.728575][ T6669]  ? setup_bdev_super+0x586/0x680
[  422.728602][ T6669]  get_tree_bdev_flags+0x430/0x4f0
[  422.728624][ T6669]  ? __pfx_gfs2_fill_super+0x10/0x10
[  422.728644][ T6669]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  422.728667][ T6669]  ? rcu_is_watching+0x15/0xb0
[  422.728710][ T6669]  gfs2_get_tree+0x51/0x1e0
[  422.728732][ T6669]  vfs_get_tree+0x92/0x2a0
[  422.728756][ T6669]  do_new_mount+0x319/0xdc0
[  422.728773][ T6669]  ? cap_capable+0x123/0x460
[  422.728794][ T6669]  ? __pfx_do_new_mount+0x10/0x10
[  422.728814][ T6669]  ? ns_capable+0x89/0xe0
[  422.728836][ T6669]  ? path_mount+0x647/0x1050
[  422.728856][ T6669]  ? user_path_at+0xd4/0x160
[  422.728878][ T6669]  __se_sys_mount+0x31d/0x420
[  422.728901][ T6669]  ? __pfx___se_sys_mount+0x10/0x10
[  422.728924][ T6669]  ? __x64_sys_mount+0x20/0xc0
[  422.728941][ T6669]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  422.728959][ T6669]  do_syscall_64+0x174/0x580
[  422.728979][ T6669]  ? trace_irq_disable+0x3b/0x140
[  422.728999][ T6669]  ? clear_bhb_loop+0x40/0x90
[  422.729020][ T6669]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  422.729037][ T6669] RIP: 0033:0x7f21e707f0ca
[  422.729054][ T6669] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  422.729069][ T6669] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  422.729088][ T6669] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  422.729101][ T6669] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  422.729114][ T6669] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  422.729126][ T6669] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  422.729137][ T6669] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  422.729165][ T6669]  </TASK>
[  422.733830][ T6669] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  422.733847][ T6669] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  423.120631][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  423.209108][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  423.576406][ T6673] loop1: detected capacity change from 0 to 32768
[  423.586958][ T6673] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  423.586977][ T6673] CPU: 0 UID: 0 PID: 6673 Comm: syz.1.251 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  423.586997][ T6673] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  423.587007][ T6673] Call Trace:
[  423.587014][ T6673]  <TASK>
[  423.587021][ T6673]  dump_stack_lvl+0xe8/0x150
[  423.587053][ T6673]  sysfs_create_dir_ns+0x271/0x2a0
[  423.587075][ T6673]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  423.587097][ T6673]  ? rt_spin_unlock+0x163/0x200
[  423.587118][ T6673]  kobject_add_internal+0x62c/0xce0
[  423.587141][ T6673]  kobject_init_and_add+0x12b/0x1a0
[  423.587172][ T6673]  ? __pfx_kobject_init_and_add+0x10/0x10
[  423.587200][ T6673]  ? __raw_spin_lock_init+0x45/0x100
[  423.587219][ T6673]  ? __init_swait_queue_head+0xa8/0x150
[  423.587247][ T6673]  gfs2_sys_fs_add+0x257/0x480
[  423.587272][ T6673]  ? is_dynamic_key+0x1aa/0x1c0
[  423.587293][ T6673]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  423.587325][ T6673]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  423.587364][ T6673]  gfs2_fill_super+0x1368/0x20f0
[  423.587397][ T6673]  ? __pfx_gfs2_fill_super+0x10/0x10
[  423.587416][ T6673]  ? rt_spin_unlock+0x157/0x200
[  423.587438][ T6673]  ? sb_set_blocksize+0x11b/0x210
[  423.587463][ T6673]  ? setup_bdev_super+0x586/0x680
[  423.587487][ T6673]  get_tree_bdev_flags+0x430/0x4f0
[  423.587508][ T6673]  ? __pfx_gfs2_fill_super+0x10/0x10
[  423.587529][ T6673]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  423.587554][ T6673]  ? rcu_is_watching+0x15/0xb0
[  423.587582][ T6673]  gfs2_get_tree+0x51/0x1e0
[  423.587606][ T6673]  vfs_get_tree+0x92/0x2a0
[  423.587638][ T6673]  do_new_mount+0x319/0xdc0
[  423.587655][ T6673]  ? cap_capable+0x123/0x460
[  423.587677][ T6673]  ? __pfx_do_new_mount+0x10/0x10
[  423.587696][ T6673]  ? ns_capable+0x89/0xe0
[  423.587719][ T6673]  ? path_mount+0x647/0x1050
[  423.587739][ T6673]  ? user_path_at+0xd4/0x160
[  423.587762][ T6673]  __se_sys_mount+0x31d/0x420
[  423.587786][ T6673]  ? __pfx___se_sys_mount+0x10/0x10
[  423.587808][ T6673]  ? __x64_sys_mount+0x20/0xc0
[  423.587824][ T6673]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  423.587843][ T6673]  do_syscall_64+0x174/0x580
[  423.587865][ T6673]  ? trace_irq_disable+0x3b/0x140
[  423.587884][ T6673]  ? clear_bhb_loop+0x40/0x90
[  423.587905][ T6673]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  423.587922][ T6673] RIP: 0033:0x7f21e707f0ca
[  423.587939][ T6673] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  423.587953][ T6673] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  423.587972][ T6673] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  423.587984][ T6673] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  423.587997][ T6673] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  423.588009][ T6673] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  423.588020][ T6673] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  423.588049][ T6673]  </TASK>
[  423.588074][ T6673] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  423.588087][ T6673] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  423.867267][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  423.949201][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  424.112050][ T6676] loop1: detected capacity change from 0 to 32768
[  424.137615][ T6676] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  424.137632][ T6676] CPU: 0 UID: 0 PID: 6676 Comm: syz.1.252 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  424.137652][ T6676] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  424.137662][ T6676] Call Trace:
[  424.137669][ T6676]  <TASK>
[  424.137674][ T6676]  dump_stack_lvl+0xe8/0x150
[  424.137694][ T6676]  sysfs_create_dir_ns+0x271/0x2a0
[  424.137707][ T6676]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  424.137719][ T6676]  ? rt_spin_unlock+0x163/0x200
[  424.137732][ T6676]  kobject_add_internal+0x62c/0xce0
[  424.137745][ T6676]  kobject_init_and_add+0x12b/0x1a0
[  424.137764][ T6676]  ? __pfx_kobject_init_and_add+0x10/0x10
[  424.137779][ T6676]  ? __raw_spin_lock_init+0x45/0x100
[  424.137791][ T6676]  ? __init_swait_queue_head+0xa8/0x150
[  424.137808][ T6676]  gfs2_sys_fs_add+0x257/0x480
[  424.137823][ T6676]  ? is_dynamic_key+0x1aa/0x1c0
[  424.137835][ T6676]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  424.137853][ T6676]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  424.137876][ T6676]  gfs2_fill_super+0x1368/0x20f0
[  424.137894][ T6676]  ? __pfx_gfs2_fill_super+0x10/0x10
[  424.137905][ T6676]  ? rt_spin_unlock+0x157/0x200
[  424.137917][ T6676]  ? sb_set_blocksize+0x11b/0x210
[  424.137932][ T6676]  ? setup_bdev_super+0x586/0x680
[  424.137946][ T6676]  get_tree_bdev_flags+0x430/0x4f0
[  424.137958][ T6676]  ? __pfx_gfs2_fill_super+0x10/0x10
[  424.137969][ T6676]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  424.137983][ T6676]  ? rcu_is_watching+0x15/0xb0
[  424.138000][ T6676]  gfs2_get_tree+0x51/0x1e0
[  424.138014][ T6676]  vfs_get_tree+0x92/0x2a0
[  424.138028][ T6676]  do_new_mount+0x319/0xdc0
[  424.138037][ T6676]  ? cap_capable+0x123/0x460
[  424.138050][ T6676]  ? __pfx_do_new_mount+0x10/0x10
[  424.138061][ T6676]  ? ns_capable+0x89/0xe0
[  424.138077][ T6676]  ? path_mount+0x647/0x1050
[  424.138089][ T6676]  ? user_path_at+0xd4/0x160
[  424.138102][ T6676]  __se_sys_mount+0x31d/0x420
[  424.138114][ T6676]  ? __pfx___se_sys_mount+0x10/0x10
[  424.138128][ T6676]  ? __x64_sys_mount+0x20/0xc0
[  424.138137][ T6676]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  424.138148][ T6676]  do_syscall_64+0x174/0x580
[  424.138161][ T6676]  ? trace_irq_disable+0x3b/0x140
[  424.138173][ T6676]  ? clear_bhb_loop+0x40/0x90
[  424.138185][ T6676]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  424.138195][ T6676] RIP: 0033:0x7f21e707f0ca
[  424.138206][ T6676] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  424.138214][ T6676] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  424.138226][ T6676] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  424.138233][ T6676] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  424.138239][ T6676] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  424.138246][ T6676] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  424.138252][ T6676] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  424.138267][ T6676]  </TASK>
[  424.138282][ T6676] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  424.138290][ T6676] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  424.276202][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  424.349114][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  424.696982][ T6679] loop1: detected capacity change from 0 to 32768
[  424.708176][ T6679] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  424.708195][ T6679] CPU: 1 UID: 0 PID: 6679 Comm: syz.1.253 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  424.708216][ T6679] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  424.708226][ T6679] Call Trace:
[  424.708233][ T6679]  <TASK>
[  424.708241][ T6679]  dump_stack_lvl+0xe8/0x150
[  424.708272][ T6679]  sysfs_create_dir_ns+0x271/0x2a0
[  424.708295][ T6679]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  424.708316][ T6679]  ? rt_spin_unlock+0x163/0x200
[  424.708338][ T6679]  kobject_add_internal+0x62c/0xce0
[  424.708366][ T6679]  kobject_init_and_add+0x12b/0x1a0
[  424.708397][ T6679]  ? __pfx_kobject_init_and_add+0x10/0x10
[  424.708425][ T6679]  ? __raw_spin_lock_init+0x45/0x100
[  424.708445][ T6679]  ? __init_swait_queue_head+0xa8/0x150
[  424.708474][ T6679]  gfs2_sys_fs_add+0x257/0x480
[  424.708512][ T6679]  ? is_dynamic_key+0x1aa/0x1c0
[  424.708533][ T6679]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  424.708566][ T6679]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  424.708605][ T6679]  gfs2_fill_super+0x1368/0x20f0
[  424.708637][ T6679]  ? __pfx_gfs2_fill_super+0x10/0x10
[  424.708655][ T6679]  ? rt_spin_unlock+0x157/0x200
[  424.708677][ T6679]  ? sb_set_blocksize+0x11b/0x210
[  424.708701][ T6679]  ? setup_bdev_super+0x586/0x680
[  424.708726][ T6679]  get_tree_bdev_flags+0x430/0x4f0
[  424.708748][ T6679]  ? __pfx_gfs2_fill_super+0x10/0x10
[  424.708768][ T6679]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  424.708793][ T6679]  ? rcu_is_watching+0x15/0xb0
[  424.708821][ T6679]  gfs2_get_tree+0x51/0x1e0
[  424.708845][ T6679]  vfs_get_tree+0x92/0x2a0
[  424.708868][ T6679]  do_new_mount+0x319/0xdc0
[  424.708886][ T6679]  ? cap_capable+0x123/0x460
[  424.708906][ T6679]  ? __pfx_do_new_mount+0x10/0x10
[  424.708925][ T6679]  ? ns_capable+0x89/0xe0
[  424.708948][ T6679]  ? path_mount+0x647/0x1050
[  424.708967][ T6679]  ? user_path_at+0xd4/0x160
[  424.708988][ T6679]  __se_sys_mount+0x31d/0x420
[  424.709020][ T6679]  ? __pfx___se_sys_mount+0x10/0x10
[  424.709045][ T6679]  ? __x64_sys_mount+0x20/0xc0
[  424.709062][ T6679]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  424.709083][ T6679]  do_syscall_64+0x174/0x580
[  424.709105][ T6679]  ? trace_irq_disable+0x3b/0x140
[  424.709126][ T6679]  ? clear_bhb_loop+0x40/0x90
[  424.709147][ T6679]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  424.709165][ T6679] RIP: 0033:0x7f21e707f0ca
[  424.709183][ T6679] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  424.709198][ T6679] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  424.709216][ T6679] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  424.709229][ T6679] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  424.709241][ T6679] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  424.709253][ T6679] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  424.709265][ T6679] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  424.709294][ T6679]  </TASK>
[  424.714967][ T6679] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  424.715853][ T6679] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  425.072624][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  425.159062][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  425.168018][ T6682] loop1: detected capacity change from 0 to 32768
[  425.196062][ T6682] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  425.196083][ T6682] CPU: 1 UID: 0 PID: 6682 Comm: syz.1.254 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  425.196103][ T6682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  425.196113][ T6682] Call Trace:
[  425.196120][ T6682]  <TASK>
[  425.196128][ T6682]  dump_stack_lvl+0xe8/0x150
[  425.196159][ T6682]  sysfs_create_dir_ns+0x271/0x2a0
[  425.196185][ T6682]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  425.196208][ T6682]  ? rt_spin_unlock+0x163/0x200
[  425.196230][ T6682]  kobject_add_internal+0x62c/0xce0
[  425.196255][ T6682]  kobject_init_and_add+0x12b/0x1a0
[  425.196287][ T6682]  ? __pfx_kobject_init_and_add+0x10/0x10
[  425.196315][ T6682]  ? __raw_spin_lock_init+0x45/0x100
[  425.196336][ T6682]  ? __init_swait_queue_head+0xa8/0x150
[  425.196365][ T6682]  gfs2_sys_fs_add+0x257/0x480
[  425.196389][ T6682]  ? is_dynamic_key+0x1aa/0x1c0
[  425.196410][ T6682]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  425.196450][ T6682]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  425.196490][ T6682]  gfs2_fill_super+0x1368/0x20f0
[  425.196523][ T6682]  ? __pfx_gfs2_fill_super+0x10/0x10
[  425.196542][ T6682]  ? rt_spin_unlock+0x157/0x200
[  425.196564][ T6682]  ? sb_set_blocksize+0x11b/0x210
[  425.196590][ T6682]  ? setup_bdev_super+0x586/0x680
[  425.196615][ T6682]  get_tree_bdev_flags+0x430/0x4f0
[  425.196637][ T6682]  ? __pfx_gfs2_fill_super+0x10/0x10
[  425.196657][ T6682]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  425.196681][ T6682]  ? rcu_is_watching+0x15/0xb0
[  425.196710][ T6682]  gfs2_get_tree+0x51/0x1e0
[  425.196734][ T6682]  vfs_get_tree+0x92/0x2a0
[  425.196757][ T6682]  do_new_mount+0x319/0xdc0
[  425.196775][ T6682]  ? cap_capable+0x123/0x460
[  425.196796][ T6682]  ? __pfx_do_new_mount+0x10/0x10
[  425.196816][ T6682]  ? ns_capable+0x89/0xe0
[  425.196841][ T6682]  ? path_mount+0x647/0x1050
[  425.196861][ T6682]  ? user_path_at+0xd4/0x160
[  425.196884][ T6682]  __se_sys_mount+0x31d/0x420
[  425.196908][ T6682]  ? __pfx___se_sys_mount+0x10/0x10
[  425.196932][ T6682]  ? __x64_sys_mount+0x20/0xc0
[  425.196949][ T6682]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  425.196969][ T6682]  do_syscall_64+0x174/0x580
[  425.196991][ T6682]  ? trace_irq_disable+0x3b/0x140
[  425.197011][ T6682]  ? clear_bhb_loop+0x40/0x90
[  425.197040][ T6682]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  425.197058][ T6682] RIP: 0033:0x7f21e707f0ca
[  425.197076][ T6682] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  425.197091][ T6682] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  425.197110][ T6682] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  425.197123][ T6682] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  425.197136][ T6682] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  425.197148][ T6682] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  425.197160][ T6682] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  425.197189][ T6682]  </TASK>
[  425.197222][ T6682] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  425.197236][ T6682] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  425.218799][ T6682] Flush: task=syz.1.254[6682] dev=loop1 state=2
[  425.299178][ T6682] Teardown: task=syz.1.254[6682] dev=loop1 state=2
[  425.807085][ T6685] loop1: detected capacity change from 0 to 32768
[  425.838711][ T6685] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  425.838726][ T6685] CPU: 0 UID: 0 PID: 6685 Comm: syz.1.255 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  425.838737][ T6685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  425.838743][ T6685] Call Trace:
[  425.838747][ T6685]  <TASK>
[  425.838752][ T6685]  dump_stack_lvl+0xe8/0x150
[  425.838772][ T6685]  sysfs_create_dir_ns+0x271/0x2a0
[  425.838784][ T6685]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  425.838797][ T6685]  ? rt_spin_unlock+0x163/0x200
[  425.838810][ T6685]  kobject_add_internal+0x62c/0xce0
[  425.838823][ T6685]  kobject_init_and_add+0x12b/0x1a0
[  425.838841][ T6685]  ? __pfx_kobject_init_and_add+0x10/0x10
[  425.838856][ T6685]  ? __raw_spin_lock_init+0x45/0x100
[  425.838868][ T6685]  ? __init_swait_queue_head+0xa8/0x150
[  425.838890][ T6685]  gfs2_sys_fs_add+0x257/0x480
[  425.838915][ T6685]  ? is_dynamic_key+0x1aa/0x1c0
[  425.838932][ T6685]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  425.838964][ T6685]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  425.839001][ T6685]  gfs2_fill_super+0x1368/0x20f0
[  425.839032][ T6685]  ? __pfx_gfs2_fill_super+0x10/0x10
[  425.839050][ T6685]  ? rt_spin_unlock+0x157/0x200
[  425.839071][ T6685]  ? sb_set_blocksize+0x11b/0x210
[  425.839095][ T6685]  ? setup_bdev_super+0x586/0x680
[  425.839118][ T6685]  get_tree_bdev_flags+0x430/0x4f0
[  425.839139][ T6685]  ? __pfx_gfs2_fill_super+0x10/0x10
[  425.839159][ T6685]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  425.839183][ T6685]  ? rcu_is_watching+0x15/0xb0
[  425.839209][ T6685]  gfs2_get_tree+0x51/0x1e0
[  425.839223][ T6685]  vfs_get_tree+0x92/0x2a0
[  425.839236][ T6685]  do_new_mount+0x319/0xdc0
[  425.839247][ T6685]  ? cap_capable+0x123/0x460
[  425.839258][ T6685]  ? __pfx_do_new_mount+0x10/0x10
[  425.839269][ T6685]  ? ns_capable+0x89/0xe0
[  425.839283][ T6685]  ? path_mount+0x647/0x1050
[  425.839294][ T6685]  ? user_path_at+0xd4/0x160
[  425.839307][ T6685]  __se_sys_mount+0x31d/0x420
[  425.839320][ T6685]  ? __pfx___se_sys_mount+0x10/0x10
[  425.839333][ T6685]  ? __x64_sys_mount+0x20/0xc0
[  425.839343][ T6685]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  425.839354][ T6685]  do_syscall_64+0x174/0x580
[  425.839367][ T6685]  ? trace_irq_disable+0x3b/0x140
[  425.839378][ T6685]  ? clear_bhb_loop+0x40/0x90
[  425.839391][ T6685]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  425.839408][ T6685] RIP: 0033:0x7f21e707f0ca
[  425.839419][ T6685] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  425.839427][ T6685] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  425.839439][ T6685] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  425.839446][ T6685] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  425.839453][ T6685] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  425.839459][ T6685] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  425.839465][ T6685] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  425.839481][ T6685]  </TASK>
[  425.843199][ T6685] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  425.843217][ T6685] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  425.972916][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  426.059098][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  426.364762][ T6688] loop1: detected capacity change from 0 to 32768
[  426.379632][ T6688] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  426.379653][ T6688] CPU: 0 UID: 0 PID: 6688 Comm: syz.1.256 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  426.379674][ T6688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  426.379684][ T6688] Call Trace:
[  426.379692][ T6688]  <TASK>
[  426.379699][ T6688]  dump_stack_lvl+0xe8/0x150
[  426.379731][ T6688]  sysfs_create_dir_ns+0x271/0x2a0
[  426.379753][ T6688]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  426.379777][ T6688]  ? rt_spin_unlock+0x163/0x200
[  426.379799][ T6688]  kobject_add_internal+0x62c/0xce0
[  426.379823][ T6688]  kobject_init_and_add+0x12b/0x1a0
[  426.379854][ T6688]  ? __pfx_kobject_init_and_add+0x10/0x10
[  426.379882][ T6688]  ? __raw_spin_lock_init+0x45/0x100
[  426.379903][ T6688]  ? __init_swait_queue_head+0xa8/0x150
[  426.379931][ T6688]  gfs2_sys_fs_add+0x257/0x480
[  426.379964][ T6688]  ? is_dynamic_key+0x1aa/0x1c0
[  426.379985][ T6688]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  426.380017][ T6688]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  426.380057][ T6688]  gfs2_fill_super+0x1368/0x20f0
[  426.380090][ T6688]  ? __pfx_gfs2_fill_super+0x10/0x10
[  426.380108][ T6688]  ? rt_spin_unlock+0x157/0x200
[  426.380130][ T6688]  ? sb_set_blocksize+0x11b/0x210
[  426.380155][ T6688]  ? setup_bdev_super+0x586/0x680
[  426.380180][ T6688]  get_tree_bdev_flags+0x430/0x4f0
[  426.380202][ T6688]  ? __pfx_gfs2_fill_super+0x10/0x10
[  426.380222][ T6688]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  426.380247][ T6688]  ? rcu_is_watching+0x15/0xb0
[  426.380275][ T6688]  gfs2_get_tree+0x51/0x1e0
[  426.380299][ T6688]  vfs_get_tree+0x92/0x2a0
[  426.380322][ T6688]  do_new_mount+0x319/0xdc0
[  426.380340][ T6688]  ? cap_capable+0x123/0x460
[  426.380362][ T6688]  ? __pfx_do_new_mount+0x10/0x10
[  426.380382][ T6688]  ? ns_capable+0x89/0xe0
[  426.380408][ T6688]  ? path_mount+0x647/0x1050
[  426.380436][ T6688]  ? user_path_at+0xd4/0x160
[  426.380458][ T6688]  __se_sys_mount+0x31d/0x420
[  426.380482][ T6688]  ? __pfx___se_sys_mount+0x10/0x10
[  426.380507][ T6688]  ? __x64_sys_mount+0x20/0xc0
[  426.380524][ T6688]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  426.380544][ T6688]  do_syscall_64+0x174/0x580
[  426.380565][ T6688]  ? trace_irq_disable+0x3b/0x140
[  426.380585][ T6688]  ? clear_bhb_loop+0x40/0x90
[  426.380608][ T6688]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  426.380626][ T6688] RIP: 0033:0x7f21e707f0ca
[  426.380643][ T6688] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  426.380657][ T6688] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  426.380676][ T6688] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  426.380689][ T6688] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  426.380701][ T6688] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  426.380713][ T6688] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  426.380740][ T6688] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  426.380769][ T6688]  </TASK>
[  426.380804][ T6688] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  426.380817][ T6688] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  426.545063][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  426.609084][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  426.925418][ T6691] loop1: detected capacity change from 0 to 32768
[  426.937673][ T6691] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  426.937693][ T6691] CPU: 0 UID: 0 PID: 6691 Comm: syz.1.257 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  426.937713][ T6691] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  426.937724][ T6691] Call Trace:
[  426.937731][ T6691]  <TASK>
[  426.937739][ T6691]  dump_stack_lvl+0xe8/0x150
[  426.937770][ T6691]  sysfs_create_dir_ns+0x271/0x2a0
[  426.937792][ T6691]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  426.937815][ T6691]  ? rt_spin_unlock+0x163/0x200
[  426.937838][ T6691]  kobject_add_internal+0x62c/0xce0
[  426.937862][ T6691]  kobject_init_and_add+0x12b/0x1a0
[  426.937892][ T6691]  ? __pfx_kobject_init_and_add+0x10/0x10
[  426.937919][ T6691]  ? __raw_spin_lock_init+0x45/0x100
[  426.937940][ T6691]  ? __init_swait_queue_head+0xa8/0x150
[  426.937967][ T6691]  gfs2_sys_fs_add+0x257/0x480
[  426.937991][ T6691]  ? is_dynamic_key+0x1aa/0x1c0
[  426.938012][ T6691]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  426.938045][ T6691]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  426.938081][ T6691]  gfs2_fill_super+0x1368/0x20f0
[  426.938112][ T6691]  ? __pfx_gfs2_fill_super+0x10/0x10
[  426.938133][ T6691]  ? rt_spin_unlock+0x157/0x200
[  426.938154][ T6691]  ? sb_set_blocksize+0x11b/0x210
[  426.938179][ T6691]  ? setup_bdev_super+0x586/0x680
[  426.938202][ T6691]  get_tree_bdev_flags+0x430/0x4f0
[  426.938223][ T6691]  ? __pfx_gfs2_fill_super+0x10/0x10
[  426.938242][ T6691]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  426.938265][ T6691]  ? rcu_is_watching+0x15/0xb0
[  426.938292][ T6691]  gfs2_get_tree+0x51/0x1e0
[  426.938315][ T6691]  vfs_get_tree+0x92/0x2a0
[  426.938337][ T6691]  do_new_mount+0x319/0xdc0
[  426.938354][ T6691]  ? cap_capable+0x123/0x460
[  426.938373][ T6691]  ? __pfx_do_new_mount+0x10/0x10
[  426.938393][ T6691]  ? ns_capable+0x89/0xe0
[  426.938416][ T6691]  ? path_mount+0x647/0x1050
[  426.938436][ T6691]  ? user_path_at+0xd4/0x160
[  426.938458][ T6691]  __se_sys_mount+0x31d/0x420
[  426.938488][ T6691]  ? __pfx___se_sys_mount+0x10/0x10
[  426.938511][ T6691]  ? __x64_sys_mount+0x20/0xc0
[  426.938528][ T6691]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  426.938547][ T6691]  do_syscall_64+0x174/0x580
[  426.938568][ T6691]  ? trace_irq_disable+0x3b/0x140
[  426.938587][ T6691]  ? clear_bhb_loop+0x40/0x90
[  426.938608][ T6691]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  426.938626][ T6691] RIP: 0033:0x7f21e707f0ca
[  426.938643][ T6691] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  426.938657][ T6691] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  426.938675][ T6691] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  426.938687][ T6691] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  426.938699][ T6691] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  426.938711][ T6691] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  426.938722][ T6691] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  426.938749][ T6691]  </TASK>
[  426.938783][ T6691] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  426.938796][ T6691] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  427.125930][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  427.229071][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  427.488116][ T6694] loop1: detected capacity change from 0 to 32768
[  427.499507][ T6694] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  427.499527][ T6694] CPU: 1 UID: 0 PID: 6694 Comm: syz.1.258 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  427.499547][ T6694] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  427.499558][ T6694] Call Trace:
[  427.499565][ T6694]  <TASK>
[  427.499573][ T6694]  dump_stack_lvl+0xe8/0x150
[  427.499604][ T6694]  sysfs_create_dir_ns+0x271/0x2a0
[  427.499626][ T6694]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  427.499650][ T6694]  ? rt_spin_unlock+0x163/0x200
[  427.499672][ T6694]  kobject_add_internal+0x62c/0xce0
[  427.499695][ T6694]  kobject_init_and_add+0x12b/0x1a0
[  427.499735][ T6694]  ? __pfx_kobject_init_and_add+0x10/0x10
[  427.499761][ T6694]  ? __raw_spin_lock_init+0x45/0x100
[  427.499779][ T6694]  ? __init_swait_queue_head+0xa8/0x150
[  427.499805][ T6694]  gfs2_sys_fs_add+0x257/0x480
[  427.499832][ T6694]  ? is_dynamic_key+0x1aa/0x1c0
[  427.499850][ T6694]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  427.499883][ T6694]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  427.499921][ T6694]  gfs2_fill_super+0x1368/0x20f0
[  427.499952][ T6694]  ? __pfx_gfs2_fill_super+0x10/0x10
[  427.499969][ T6694]  ? rt_spin_unlock+0x157/0x200
[  427.499990][ T6694]  ? sb_set_blocksize+0x11b/0x210
[  427.500012][ T6694]  ? setup_bdev_super+0x586/0x680
[  427.500036][ T6694]  get_tree_bdev_flags+0x430/0x4f0
[  427.500057][ T6694]  ? __pfx_gfs2_fill_super+0x10/0x10
[  427.500075][ T6694]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  427.500096][ T6694]  ? rcu_is_watching+0x15/0xb0
[  427.500122][ T6694]  gfs2_get_tree+0x51/0x1e0
[  427.500145][ T6694]  vfs_get_tree+0x92/0x2a0
[  427.500166][ T6694]  do_new_mount+0x319/0xdc0
[  427.500183][ T6694]  ? cap_capable+0x123/0x460
[  427.500203][ T6694]  ? __pfx_do_new_mount+0x10/0x10
[  427.500222][ T6694]  ? ns_capable+0x89/0xe0
[  427.500245][ T6694]  ? path_mount+0x647/0x1050
[  427.500263][ T6694]  ? user_path_at+0xd4/0x160
[  427.500285][ T6694]  __se_sys_mount+0x31d/0x420
[  427.500307][ T6694]  ? __pfx___se_sys_mount+0x10/0x10
[  427.500331][ T6694]  ? __x64_sys_mount+0x20/0xc0
[  427.500347][ T6694]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  427.500364][ T6694]  do_syscall_64+0x174/0x580
[  427.500385][ T6694]  ? trace_irq_disable+0x3b/0x140
[  427.500405][ T6694]  ? clear_bhb_loop+0x40/0x90
[  427.500426][ T6694]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  427.500442][ T6694] RIP: 0033:0x7f21e707f0ca
[  427.500458][ T6694] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  427.500472][ T6694] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  427.500489][ T6694] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  427.500501][ T6694] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  427.500512][ T6694] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  427.500524][ T6694] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  427.500534][ T6694] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  427.500562][ T6694]  </TASK>
[  427.500599][ T6694] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  427.500613][ T6694] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  427.572757][ T6694] Flush: task=syz.1.258[6694] dev=loop1 state=2
2026/07/06 08:17:54 executed programs: 244
[  427.680725][ T6694] Teardown: task=syz.1.258[6694] dev=loop1 state=2
[  428.109732][ T6697] loop1: detected capacity change from 0 to 32768
[  428.118610][ T6697] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  428.118630][ T6697] CPU: 1 UID: 0 PID: 6697 Comm: syz.1.259 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  428.118649][ T6697] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  428.118659][ T6697] Call Trace:
[  428.118666][ T6697]  <TASK>
[  428.118674][ T6697]  dump_stack_lvl+0xe8/0x150
[  428.118704][ T6697]  sysfs_create_dir_ns+0x271/0x2a0
[  428.118726][ T6697]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  428.118749][ T6697]  ? rt_spin_unlock+0x163/0x200
[  428.118780][ T6697]  kobject_add_internal+0x62c/0xce0
[  428.118804][ T6697]  kobject_init_and_add+0x12b/0x1a0
[  428.118837][ T6697]  ? __pfx_kobject_init_and_add+0x10/0x10
[  428.118862][ T6697]  ? __raw_spin_lock_init+0x45/0x100
[  428.118882][ T6697]  ? __init_swait_queue_head+0xa8/0x150
[  428.118910][ T6697]  gfs2_sys_fs_add+0x257/0x480
[  428.118938][ T6697]  ? is_dynamic_key+0x1aa/0x1c0
[  428.118957][ T6697]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  428.118987][ T6697]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  428.119026][ T6697]  gfs2_fill_super+0x1368/0x20f0
[  428.119059][ T6697]  ? __pfx_gfs2_fill_super+0x10/0x10
[  428.119078][ T6697]  ? rt_spin_unlock+0x157/0x200
[  428.119101][ T6697]  ? sb_set_blocksize+0x11b/0x210
[  428.119127][ T6697]  ? setup_bdev_super+0x586/0x680
[  428.119152][ T6697]  get_tree_bdev_flags+0x430/0x4f0
[  428.119173][ T6697]  ? __pfx_gfs2_fill_super+0x10/0x10
[  428.119193][ T6697]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  428.119216][ T6697]  ? rcu_is_watching+0x15/0xb0
[  428.119244][ T6697]  gfs2_get_tree+0x51/0x1e0
[  428.119267][ T6697]  vfs_get_tree+0x92/0x2a0
[  428.119291][ T6697]  do_new_mount+0x319/0xdc0
[  428.119308][ T6697]  ? cap_capable+0x123/0x460
[  428.119330][ T6697]  ? __pfx_do_new_mount+0x10/0x10
[  428.119350][ T6697]  ? ns_capable+0x89/0xe0
[  428.119372][ T6697]  ? path_mount+0x647/0x1050
[  428.119392][ T6697]  ? user_path_at+0xd4/0x160
[  428.119415][ T6697]  __se_sys_mount+0x31d/0x420
[  428.119439][ T6697]  ? __pfx___se_sys_mount+0x10/0x10
[  428.119463][ T6697]  ? __x64_sys_mount+0x20/0xc0
[  428.119481][ T6697]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  428.119501][ T6697]  do_syscall_64+0x174/0x580
[  428.119523][ T6697]  ? trace_irq_disable+0x3b/0x140
[  428.119543][ T6697]  ? clear_bhb_loop+0x40/0x90
[  428.119564][ T6697]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  428.119581][ T6697] RIP: 0033:0x7f21e707f0ca
[  428.119599][ T6697] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  428.119612][ T6697] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  428.119631][ T6697] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  428.119644][ T6697] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  428.119655][ T6697] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  428.119666][ T6697] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  428.119678][ T6697] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  428.119705][ T6697]  </TASK>
[  428.209179][ T6697] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  428.209199][ T6697] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  428.321234][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  428.389102][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  428.678567][ T6700] loop1: detected capacity change from 0 to 32768
[  428.692144][ T6700] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  428.692166][ T6700] CPU: 0 UID: 0 PID: 6700 Comm: syz.1.260 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  428.692185][ T6700] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  428.692196][ T6700] Call Trace:
[  428.692203][ T6700]  <TASK>
[  428.692210][ T6700]  dump_stack_lvl+0xe8/0x150
[  428.692242][ T6700]  sysfs_create_dir_ns+0x271/0x2a0
[  428.692263][ T6700]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  428.692287][ T6700]  ? rt_spin_unlock+0x163/0x200
[  428.692310][ T6700]  kobject_add_internal+0x62c/0xce0
[  428.692334][ T6700]  kobject_init_and_add+0x12b/0x1a0
[  428.692366][ T6700]  ? __pfx_kobject_init_and_add+0x10/0x10
[  428.692391][ T6700]  ? __raw_spin_lock_init+0x45/0x100
[  428.692409][ T6700]  ? __init_swait_queue_head+0xa8/0x150
[  428.692435][ T6700]  gfs2_sys_fs_add+0x257/0x480
[  428.692459][ T6700]  ? is_dynamic_key+0x1aa/0x1c0
[  428.692477][ T6700]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  428.692510][ T6700]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  428.692548][ T6700]  gfs2_fill_super+0x1368/0x20f0
[  428.692578][ T6700]  ? __pfx_gfs2_fill_super+0x10/0x10
[  428.692596][ T6700]  ? rt_spin_unlock+0x157/0x200
[  428.692615][ T6700]  ? sb_set_blocksize+0x11b/0x210
[  428.692641][ T6700]  ? setup_bdev_super+0x586/0x680
[  428.692673][ T6700]  get_tree_bdev_flags+0x430/0x4f0
[  428.692693][ T6700]  ? __pfx_gfs2_fill_super+0x10/0x10
[  428.692712][ T6700]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  428.692732][ T6700]  ? rcu_is_watching+0x15/0xb0
[  428.692757][ T6700]  gfs2_get_tree+0x51/0x1e0
[  428.692781][ T6700]  vfs_get_tree+0x92/0x2a0
[  428.692802][ T6700]  do_new_mount+0x319/0xdc0
[  428.692818][ T6700]  ? cap_capable+0x123/0x460
[  428.692838][ T6700]  ? __pfx_do_new_mount+0x10/0x10
[  428.692857][ T6700]  ? ns_capable+0x89/0xe0
[  428.692880][ T6700]  ? path_mount+0x647/0x1050
[  428.692899][ T6700]  ? user_path_at+0xd4/0x160
[  428.692919][ T6700]  __se_sys_mount+0x31d/0x420
[  428.692942][ T6700]  ? __pfx___se_sys_mount+0x10/0x10
[  428.692966][ T6700]  ? __x64_sys_mount+0x20/0xc0
[  428.692982][ T6700]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  428.693000][ T6700]  do_syscall_64+0x174/0x580
[  428.693021][ T6700]  ? trace_irq_disable+0x3b/0x140
[  428.693041][ T6700]  ? clear_bhb_loop+0x40/0x90
[  428.693062][ T6700]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  428.693078][ T6700] RIP: 0033:0x7f21e707f0ca
[  428.693094][ T6700] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  428.693108][ T6700] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  428.693125][ T6700] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  428.693136][ T6700] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  428.693147][ T6700] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  428.693158][ T6700] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  428.693169][ T6700] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  428.693197][ T6700]  </TASK>
[  428.693232][ T6700] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  428.693245][ T6700] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  428.814778][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  428.890619][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  429.255224][ T6703] loop1: detected capacity change from 0 to 32768
[  429.268525][ T6703] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  429.268545][ T6703] CPU: 0 UID: 0 PID: 6703 Comm: syz.1.261 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  429.268565][ T6703] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  429.268575][ T6703] Call Trace:
[  429.268582][ T6703]  <TASK>
[  429.268589][ T6703]  dump_stack_lvl+0xe8/0x150
[  429.268620][ T6703]  sysfs_create_dir_ns+0x271/0x2a0
[  429.268642][ T6703]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  429.268664][ T6703]  ? rt_spin_unlock+0x163/0x200
[  429.268684][ T6703]  kobject_add_internal+0x62c/0xce0
[  429.268708][ T6703]  kobject_init_and_add+0x12b/0x1a0
[  429.268737][ T6703]  ? __pfx_kobject_init_and_add+0x10/0x10
[  429.268765][ T6703]  ? __raw_spin_lock_init+0x45/0x100
[  429.268785][ T6703]  ? __init_swait_queue_head+0xa8/0x150
[  429.268813][ T6703]  gfs2_sys_fs_add+0x257/0x480
[  429.268837][ T6703]  ? is_dynamic_key+0x1aa/0x1c0
[  429.268858][ T6703]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  429.268888][ T6703]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  429.268927][ T6703]  gfs2_fill_super+0x1368/0x20f0
[  429.268960][ T6703]  ? __pfx_gfs2_fill_super+0x10/0x10
[  429.268978][ T6703]  ? rt_spin_unlock+0x157/0x200
[  429.268999][ T6703]  ? sb_set_blocksize+0x11b/0x210
[  429.269023][ T6703]  ? setup_bdev_super+0x586/0x680
[  429.269047][ T6703]  get_tree_bdev_flags+0x430/0x4f0
[  429.269067][ T6703]  ? __pfx_gfs2_fill_super+0x10/0x10
[  429.269096][ T6703]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  429.269120][ T6703]  ? rcu_is_watching+0x15/0xb0
[  429.269149][ T6703]  gfs2_get_tree+0x51/0x1e0
[  429.269172][ T6703]  vfs_get_tree+0x92/0x2a0
[  429.269196][ T6703]  do_new_mount+0x319/0xdc0
[  429.269213][ T6703]  ? cap_capable+0x123/0x460
[  429.269235][ T6703]  ? __pfx_do_new_mount+0x10/0x10
[  429.269255][ T6703]  ? ns_capable+0x89/0xe0
[  429.269279][ T6703]  ? path_mount+0x647/0x1050
[  429.269300][ T6703]  ? user_path_at+0xd4/0x160
[  429.269322][ T6703]  __se_sys_mount+0x31d/0x420
[  429.269343][ T6703]  ? __pfx___se_sys_mount+0x10/0x10
[  429.269367][ T6703]  ? __x64_sys_mount+0x20/0xc0
[  429.269383][ T6703]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  429.269402][ T6703]  do_syscall_64+0x174/0x580
[  429.269423][ T6703]  ? trace_irq_disable+0x3b/0x140
[  429.269442][ T6703]  ? clear_bhb_loop+0x40/0x90
[  429.269463][ T6703]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  429.269481][ T6703] RIP: 0033:0x7f21e707f0ca
[  429.269498][ T6703] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  429.269513][ T6703] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  429.269532][ T6703] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  429.269544][ T6703] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  429.269557][ T6703] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  429.269569][ T6703] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  429.269580][ T6703] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  429.269608][ T6703]  </TASK>
[  429.273864][ T6703] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  429.273880][ T6703] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  429.666190][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  429.750638][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  430.147287][ T6708] loop1: detected capacity change from 0 to 32768
[  430.180599][ T6708] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  430.180621][ T6708] CPU: 1 UID: 0 PID: 6708 Comm: syz.1.263 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  430.180642][ T6708] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  430.180655][ T6708] Call Trace:
[  430.180663][ T6708]  <TASK>
[  430.180671][ T6708]  dump_stack_lvl+0xe8/0x150
[  430.180702][ T6708]  sysfs_create_dir_ns+0x271/0x2a0
[  430.180724][ T6708]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  430.180747][ T6708]  ? rt_spin_unlock+0x163/0x200
[  430.180769][ T6708]  kobject_add_internal+0x62c/0xce0
[  430.180793][ T6708]  kobject_init_and_add+0x12b/0x1a0
[  430.180823][ T6708]  ? __pfx_kobject_init_and_add+0x10/0x10
[  430.180851][ T6708]  ? __raw_spin_lock_init+0x45/0x100
[  430.180871][ T6708]  ? __init_swait_queue_head+0xa8/0x150
[  430.180899][ T6708]  gfs2_sys_fs_add+0x257/0x480
[  430.180924][ T6708]  ? is_dynamic_key+0x1aa/0x1c0
[  430.180944][ T6708]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  430.180976][ T6708]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  430.181013][ T6708]  gfs2_fill_super+0x1368/0x20f0
[  430.181047][ T6708]  ? __pfx_gfs2_fill_super+0x10/0x10
[  430.181067][ T6708]  ? rt_spin_unlock+0x157/0x200
[  430.181089][ T6708]  ? sb_set_blocksize+0x11b/0x210
[  430.181114][ T6708]  ? setup_bdev_super+0x586/0x680
[  430.181138][ T6708]  get_tree_bdev_flags+0x430/0x4f0
[  430.181160][ T6708]  ? __pfx_gfs2_fill_super+0x10/0x10
[  430.181181][ T6708]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  430.181204][ T6708]  ? rcu_is_watching+0x15/0xb0
[  430.181232][ T6708]  gfs2_get_tree+0x51/0x1e0
[  430.181256][ T6708]  vfs_get_tree+0x92/0x2a0
[  430.181279][ T6708]  do_new_mount+0x319/0xdc0
[  430.181297][ T6708]  ? cap_capable+0x123/0x460
[  430.181318][ T6708]  ? __pfx_do_new_mount+0x10/0x10
[  430.181337][ T6708]  ? ns_capable+0x89/0xe0
[  430.181360][ T6708]  ? path_mount+0x647/0x1050
[  430.181381][ T6708]  ? user_path_at+0xd4/0x160
[  430.181403][ T6708]  __se_sys_mount+0x31d/0x420
[  430.181428][ T6708]  ? __pfx___se_sys_mount+0x10/0x10
[  430.181452][ T6708]  ? __x64_sys_mount+0x20/0xc0
[  430.181470][ T6708]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  430.181498][ T6708]  do_syscall_64+0x174/0x580
[  430.181519][ T6708]  ? trace_irq_disable+0x3b/0x140
[  430.181538][ T6708]  ? clear_bhb_loop+0x40/0x90
[  430.181560][ T6708]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  430.181576][ T6708] RIP: 0033:0x7f21e707f0ca
[  430.181593][ T6708] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  430.181609][ T6708] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  430.181626][ T6708] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  430.181638][ T6708] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  430.181650][ T6708] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  430.181661][ T6708] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  430.181672][ T6708] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  430.181695][ T6708]  </TASK>
[  430.181832][ T6708] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  430.181847][ T6708] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  430.332600][ T6708] Flush: task=syz.1.263[6708] dev=loop1 state=2
[  430.409164][ T6708] Teardown: task=syz.1.263[6708] dev=loop1 state=2
[  430.809279][ T6711] loop1: detected capacity change from 0 to 32768
[  430.823493][ T6711] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  430.823514][ T6711] CPU: 0 UID: 0 PID: 6711 Comm: syz.1.264 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  430.823534][ T6711] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  430.823543][ T6711] Call Trace:
[  430.823550][ T6711]  <TASK>
[  430.823558][ T6711]  dump_stack_lvl+0xe8/0x150
[  430.823589][ T6711]  sysfs_create_dir_ns+0x271/0x2a0
[  430.823611][ T6711]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  430.823634][ T6711]  ? rt_spin_unlock+0x163/0x200
[  430.823655][ T6711]  kobject_add_internal+0x62c/0xce0
[  430.823678][ T6711]  kobject_init_and_add+0x12b/0x1a0
[  430.823709][ T6711]  ? __pfx_kobject_init_and_add+0x10/0x10
[  430.823737][ T6711]  ? __raw_spin_lock_init+0x45/0x100
[  430.823757][ T6711]  ? __init_swait_queue_head+0xa8/0x150
[  430.823785][ T6711]  gfs2_sys_fs_add+0x257/0x480
[  430.823808][ T6711]  ? is_dynamic_key+0x1aa/0x1c0
[  430.823829][ T6711]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  430.823861][ T6711]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  430.823899][ T6711]  gfs2_fill_super+0x1368/0x20f0
[  430.823932][ T6711]  ? __pfx_gfs2_fill_super+0x10/0x10
[  430.823950][ T6711]  ? rt_spin_unlock+0x157/0x200
[  430.823972][ T6711]  ? sb_set_blocksize+0x11b/0x210
[  430.823995][ T6711]  ? setup_bdev_super+0x586/0x680
[  430.824019][ T6711]  get_tree_bdev_flags+0x430/0x4f0
[  430.824041][ T6711]  ? __pfx_gfs2_fill_super+0x10/0x10
[  430.824061][ T6711]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  430.824085][ T6711]  ? rcu_is_watching+0x15/0xb0
[  430.824112][ T6711]  gfs2_get_tree+0x51/0x1e0
[  430.824135][ T6711]  vfs_get_tree+0x92/0x2a0
[  430.824158][ T6711]  do_new_mount+0x319/0xdc0
[  430.824175][ T6711]  ? cap_capable+0x123/0x460
[  430.824195][ T6711]  ? __pfx_do_new_mount+0x10/0x10
[  430.824215][ T6711]  ? ns_capable+0x89/0xe0
[  430.824238][ T6711]  ? path_mount+0x647/0x1050
[  430.824258][ T6711]  ? user_path_at+0xd4/0x160
[  430.824279][ T6711]  __se_sys_mount+0x31d/0x420
[  430.824302][ T6711]  ? __pfx___se_sys_mount+0x10/0x10
[  430.824326][ T6711]  ? __x64_sys_mount+0x20/0xc0
[  430.824343][ T6711]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  430.824362][ T6711]  do_syscall_64+0x174/0x580
[  430.824383][ T6711]  ? trace_irq_disable+0x3b/0x140
[  430.824402][ T6711]  ? clear_bhb_loop+0x40/0x90
[  430.824423][ T6711]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  430.824441][ T6711] RIP: 0033:0x7f21e707f0ca
[  430.824465][ T6711] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  430.824479][ T6711] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  430.824498][ T6711] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  430.824510][ T6711] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  430.824522][ T6711] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  430.824533][ T6711] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  430.824545][ T6711] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  430.824572][ T6711]  </TASK>
[  430.824597][ T6711] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  430.824609][ T6711] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  430.907704][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  431.099804][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  431.443805][ T6714] loop1: detected capacity change from 0 to 32768
[  431.457090][ T6714] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  431.457112][ T6714] CPU: 0 UID: 0 PID: 6714 Comm: syz.1.265 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  431.457132][ T6714] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  431.457142][ T6714] Call Trace:
[  431.457149][ T6714]  <TASK>
[  431.457156][ T6714]  dump_stack_lvl+0xe8/0x150
[  431.457187][ T6714]  sysfs_create_dir_ns+0x271/0x2a0
[  431.457209][ T6714]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  431.457230][ T6714]  ? rt_spin_unlock+0x163/0x200
[  431.457250][ T6714]  kobject_add_internal+0x62c/0xce0
[  431.457274][ T6714]  kobject_init_and_add+0x12b/0x1a0
[  431.457304][ T6714]  ? __pfx_kobject_init_and_add+0x10/0x10
[  431.457331][ T6714]  ? __raw_spin_lock_init+0x45/0x100
[  431.457351][ T6714]  ? __init_swait_queue_head+0xa8/0x150
[  431.457378][ T6714]  gfs2_sys_fs_add+0x257/0x480
[  431.457401][ T6714]  ? is_dynamic_key+0x1aa/0x1c0
[  431.457422][ T6714]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  431.457455][ T6714]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  431.457493][ T6714]  gfs2_fill_super+0x1368/0x20f0
[  431.457526][ T6714]  ? __pfx_gfs2_fill_super+0x10/0x10
[  431.457544][ T6714]  ? rt_spin_unlock+0x157/0x200
[  431.457566][ T6714]  ? sb_set_blocksize+0x11b/0x210
[  431.457591][ T6714]  ? setup_bdev_super+0x586/0x680
[  431.457615][ T6714]  get_tree_bdev_flags+0x430/0x4f0
[  431.457637][ T6714]  ? __pfx_gfs2_fill_super+0x10/0x10
[  431.457657][ T6714]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  431.457681][ T6714]  ? rcu_is_watching+0x15/0xb0
[  431.457707][ T6714]  gfs2_get_tree+0x51/0x1e0
[  431.457730][ T6714]  vfs_get_tree+0x92/0x2a0
[  431.457754][ T6714]  do_new_mount+0x319/0xdc0
[  431.457771][ T6714]  ? cap_capable+0x123/0x460
[  431.457791][ T6714]  ? __pfx_do_new_mount+0x10/0x10
[  431.457810][ T6714]  ? ns_capable+0x89/0xe0
[  431.457833][ T6714]  ? path_mount+0x647/0x1050
[  431.457853][ T6714]  ? user_path_at+0xd4/0x160
[  431.457874][ T6714]  __se_sys_mount+0x31d/0x420
[  431.457905][ T6714]  ? __pfx___se_sys_mount+0x10/0x10
[  431.457928][ T6714]  ? __x64_sys_mount+0x20/0xc0
[  431.457945][ T6714]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  431.457965][ T6714]  do_syscall_64+0x174/0x580
[  431.457986][ T6714]  ? trace_irq_disable+0x3b/0x140
[  431.458005][ T6714]  ? clear_bhb_loop+0x40/0x90
[  431.458027][ T6714]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  431.458044][ T6714] RIP: 0033:0x7f21e707f0ca
[  431.458062][ T6714] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  431.458077][ T6714] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  431.458099][ T6714] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  431.458111][ T6714] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  431.458124][ T6714] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  431.458135][ T6714] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  431.458147][ T6714] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  431.458175][ T6714]  </TASK>
[  431.458201][ T6714] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  431.458215][ T6714] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  431.852373][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  431.939053][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  432.341689][ T6720] loop1: detected capacity change from 0 to 32768
[  432.347063][ T6720] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  432.347083][ T6720] CPU: 0 UID: 0 PID: 6720 Comm: syz.1.267 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  432.347103][ T6720] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  432.347113][ T6720] Call Trace:
[  432.347121][ T6720]  <TASK>
[  432.347128][ T6720]  dump_stack_lvl+0xe8/0x150
[  432.347159][ T6720]  sysfs_create_dir_ns+0x271/0x2a0
[  432.347182][ T6720]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  432.347206][ T6720]  ? rt_spin_unlock+0x163/0x200
[  432.347227][ T6720]  kobject_add_internal+0x62c/0xce0
[  432.347251][ T6720]  kobject_init_and_add+0x12b/0x1a0
[  432.347282][ T6720]  ? __pfx_kobject_init_and_add+0x10/0x10
[  432.347306][ T6720]  ? __raw_spin_lock_init+0x45/0x100
[  432.347324][ T6720]  ? __init_swait_queue_head+0xa8/0x150
[  432.347359][ T6720]  gfs2_sys_fs_add+0x257/0x480
[  432.347382][ T6720]  ? is_dynamic_key+0x1aa/0x1c0
[  432.347403][ T6720]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  432.347436][ T6720]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  432.347472][ T6720]  gfs2_fill_super+0x1368/0x20f0
[  432.347502][ T6720]  ? __pfx_gfs2_fill_super+0x10/0x10
[  432.347519][ T6720]  ? rt_spin_unlock+0x157/0x200
[  432.347539][ T6720]  ? sb_set_blocksize+0x11b/0x210
[  432.347567][ T6720]  ? setup_bdev_super+0x586/0x680
[  432.347590][ T6720]  get_tree_bdev_flags+0x430/0x4f0
[  432.347611][ T6720]  ? __pfx_gfs2_fill_super+0x10/0x10
[  432.347628][ T6720]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  432.347651][ T6720]  ? rcu_is_watching+0x15/0xb0
[  432.347678][ T6720]  gfs2_get_tree+0x51/0x1e0
[  432.347700][ T6720]  vfs_get_tree+0x92/0x2a0
[  432.347722][ T6720]  do_new_mount+0x319/0xdc0
[  432.347739][ T6720]  ? cap_capable+0x123/0x460
[  432.347775][ T6720]  ? __pfx_do_new_mount+0x10/0x10
[  432.347794][ T6720]  ? ns_capable+0x89/0xe0
[  432.347817][ T6720]  ? path_mount+0x647/0x1050
[  432.347838][ T6720]  ? user_path_at+0xd4/0x160
[  432.347861][ T6720]  __se_sys_mount+0x31d/0x420
[  432.347885][ T6720]  ? __pfx___se_sys_mount+0x10/0x10
[  432.347909][ T6720]  ? __x64_sys_mount+0x20/0xc0
[  432.347926][ T6720]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  432.347946][ T6720]  do_syscall_64+0x174/0x580
[  432.347968][ T6720]  ? trace_irq_disable+0x3b/0x140
[  432.347989][ T6720]  ? clear_bhb_loop+0x40/0x90
[  432.348010][ T6720]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  432.348027][ T6720] RIP: 0033:0x7f21e707f0ca
[  432.348044][ T6720] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  432.348060][ T6720] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  432.348077][ T6720] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  432.348090][ T6720] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  432.348101][ T6720] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  432.348113][ T6720] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  432.348124][ T6720] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  432.348152][ T6720]  </TASK>
[  432.348189][ T6720] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  432.348202][ T6720] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  432.743756][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  432.839154][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
2026/07/06 08:18:00 executed programs: 254
[  433.224693][ T6725] loop1: detected capacity change from 0 to 32768
[  433.232807][ T6725] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  433.232827][ T6725] CPU: 0 UID: 0 PID: 6725 Comm: syz.1.269 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  433.232846][ T6725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  433.232857][ T6725] Call Trace:
[  433.232863][ T6725]  <TASK>
[  433.232870][ T6725]  dump_stack_lvl+0xe8/0x150
[  433.232901][ T6725]  sysfs_create_dir_ns+0x271/0x2a0
[  433.232922][ T6725]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  433.232944][ T6725]  ? rt_spin_unlock+0x163/0x200
[  433.232965][ T6725]  kobject_add_internal+0x62c/0xce0
[  433.232988][ T6725]  kobject_init_and_add+0x12b/0x1a0
[  433.233019][ T6725]  ? __pfx_kobject_init_and_add+0x10/0x10
[  433.233046][ T6725]  ? __raw_spin_lock_init+0x45/0x100
[  433.233066][ T6725]  ? __init_swait_queue_head+0xa8/0x150
[  433.233094][ T6725]  gfs2_sys_fs_add+0x257/0x480
[  433.233118][ T6725]  ? is_dynamic_key+0x1aa/0x1c0
[  433.233138][ T6725]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  433.233170][ T6725]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  433.233207][ T6725]  gfs2_fill_super+0x1368/0x20f0
[  433.233238][ T6725]  ? __pfx_gfs2_fill_super+0x10/0x10
[  433.233256][ T6725]  ? rt_spin_unlock+0x157/0x200
[  433.233278][ T6725]  ? sb_set_blocksize+0x11b/0x210
[  433.233305][ T6725]  ? setup_bdev_super+0x586/0x680
[  433.233329][ T6725]  get_tree_bdev_flags+0x430/0x4f0
[  433.233350][ T6725]  ? __pfx_gfs2_fill_super+0x10/0x10
[  433.233370][ T6725]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  433.233393][ T6725]  ? rcu_is_watching+0x15/0xb0
[  433.233420][ T6725]  gfs2_get_tree+0x51/0x1e0
[  433.233443][ T6725]  vfs_get_tree+0x92/0x2a0
[  433.233466][ T6725]  do_new_mount+0x319/0xdc0
[  433.233482][ T6725]  ? cap_capable+0x123/0x460
[  433.233504][ T6725]  ? __pfx_do_new_mount+0x10/0x10
[  433.233523][ T6725]  ? ns_capable+0x89/0xe0
[  433.233545][ T6725]  ? path_mount+0x647/0x1050
[  433.233565][ T6725]  ? user_path_at+0xd4/0x160
[  433.233586][ T6725]  __se_sys_mount+0x31d/0x420
[  433.233609][ T6725]  ? __pfx___se_sys_mount+0x10/0x10
[  433.233633][ T6725]  ? __x64_sys_mount+0x20/0xc0
[  433.233649][ T6725]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  433.233668][ T6725]  do_syscall_64+0x174/0x580
[  433.233689][ T6725]  ? trace_irq_disable+0x3b/0x140
[  433.233709][ T6725]  ? clear_bhb_loop+0x40/0x90
[  433.233736][ T6725]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  433.233753][ T6725] RIP: 0033:0x7f21e707f0ca
[  433.233770][ T6725] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  433.233785][ T6725] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  433.233803][ T6725] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  433.233816][ T6725] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  433.233827][ T6725] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  433.233839][ T6725] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  433.233850][ T6725] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  433.233877][ T6725]  </TASK>
[  433.233909][ T6725] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  433.233923][ T6725] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  433.392360][ T6725] Flush: task=syz.1.269[6725] dev=loop1 state=2
[  433.459671][ T6725] Teardown: task=syz.1.269[6725] dev=loop1 state=2
[  433.880331][ T6729] loop1: detected capacity change from 0 to 32768
[  433.883832][ T6729] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  433.883852][ T6729] CPU: 1 UID: 0 PID: 6729 Comm: syz.1.270 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  433.883873][ T6729] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  433.883882][ T6729] Call Trace:
[  433.883890][ T6729]  <TASK>
[  433.883898][ T6729]  dump_stack_lvl+0xe8/0x150
[  433.883929][ T6729]  sysfs_create_dir_ns+0x271/0x2a0
[  433.883950][ T6729]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  433.883973][ T6729]  ? rt_spin_unlock+0x163/0x200
[  433.883996][ T6729]  kobject_add_internal+0x62c/0xce0
[  433.884020][ T6729]  kobject_init_and_add+0x12b/0x1a0
[  433.884051][ T6729]  ? __pfx_kobject_init_and_add+0x10/0x10
[  433.884079][ T6729]  ? __raw_spin_lock_init+0x45/0x100
[  433.884099][ T6729]  ? __init_swait_queue_head+0xa8/0x150
[  433.884136][ T6729]  gfs2_sys_fs_add+0x257/0x480
[  433.884161][ T6729]  ? is_dynamic_key+0x1aa/0x1c0
[  433.884182][ T6729]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  433.884213][ T6729]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  433.884251][ T6729]  gfs2_fill_super+0x1368/0x20f0
[  433.884280][ T6729]  ? __pfx_gfs2_fill_super+0x10/0x10
[  433.884297][ T6729]  ? rt_spin_unlock+0x157/0x200
[  433.884318][ T6729]  ? sb_set_blocksize+0x11b/0x210
[  433.884343][ T6729]  ? setup_bdev_super+0x586/0x680
[  433.884367][ T6729]  get_tree_bdev_flags+0x430/0x4f0
[  433.884387][ T6729]  ? __pfx_gfs2_fill_super+0x10/0x10
[  433.884405][ T6729]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  433.884428][ T6729]  ? rcu_is_watching+0x15/0xb0
[  433.884456][ T6729]  gfs2_get_tree+0x51/0x1e0
[  433.884478][ T6729]  vfs_get_tree+0x92/0x2a0
[  433.884498][ T6729]  do_new_mount+0x319/0xdc0
[  433.884514][ T6729]  ? cap_capable+0x123/0x460
[  433.884535][ T6729]  ? __pfx_do_new_mount+0x10/0x10
[  433.884554][ T6729]  ? ns_capable+0x89/0xe0
[  433.884576][ T6729]  ? path_mount+0x647/0x1050
[  433.884596][ T6729]  ? user_path_at+0xd4/0x160
[  433.884616][ T6729]  __se_sys_mount+0x31d/0x420
[  433.884638][ T6729]  ? __pfx___se_sys_mount+0x10/0x10
[  433.884661][ T6729]  ? __x64_sys_mount+0x20/0xc0
[  433.884677][ T6729]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  433.884696][ T6729]  do_syscall_64+0x174/0x580
[  433.884717][ T6729]  ? trace_irq_disable+0x3b/0x140
[  433.884736][ T6729]  ? clear_bhb_loop+0x40/0x90
[  433.884757][ T6729]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  433.884773][ T6729] RIP: 0033:0x7f21e707f0ca
[  433.884789][ T6729] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  433.884803][ T6729] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  433.884821][ T6729] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  433.884832][ T6729] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  433.884844][ T6729] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  433.884855][ T6729] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  433.884866][ T6729] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  433.884892][ T6729]  </TASK>
[  433.884917][ T6729] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  433.884930][ T6729] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  434.046267][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  434.111350][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  434.426864][ T6733] loop1: detected capacity change from 0 to 32768
[  434.437506][ T6733] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  434.437527][ T6733] CPU: 0 UID: 0 PID: 6733 Comm: syz.1.271 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  434.437546][ T6733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  434.437557][ T6733] Call Trace:
[  434.437564][ T6733]  <TASK>
[  434.437572][ T6733]  dump_stack_lvl+0xe8/0x150
[  434.437613][ T6733]  sysfs_create_dir_ns+0x271/0x2a0
[  434.437636][ T6733]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  434.437660][ T6733]  ? rt_spin_unlock+0x163/0x200
[  434.437682][ T6733]  kobject_add_internal+0x62c/0xce0
[  434.437706][ T6733]  kobject_init_and_add+0x12b/0x1a0
[  434.437737][ T6733]  ? __pfx_kobject_init_and_add+0x10/0x10
[  434.437764][ T6733]  ? __raw_spin_lock_init+0x45/0x100
[  434.437784][ T6733]  ? __init_swait_queue_head+0xa8/0x150
[  434.437811][ T6733]  gfs2_sys_fs_add+0x257/0x480
[  434.437835][ T6733]  ? is_dynamic_key+0x1aa/0x1c0
[  434.437855][ T6733]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  434.437889][ T6733]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  434.437928][ T6733]  gfs2_fill_super+0x1368/0x20f0
[  434.437961][ T6733]  ? __pfx_gfs2_fill_super+0x10/0x10
[  434.437978][ T6733]  ? rt_spin_unlock+0x157/0x200
[  434.438000][ T6733]  ? sb_set_blocksize+0x11b/0x210
[  434.438025][ T6733]  ? setup_bdev_super+0x586/0x680
[  434.438049][ T6733]  get_tree_bdev_flags+0x430/0x4f0
[  434.438070][ T6733]  ? __pfx_gfs2_fill_super+0x10/0x10
[  434.438095][ T6733]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  434.438119][ T6733]  ? rcu_is_watching+0x15/0xb0
[  434.438146][ T6733]  gfs2_get_tree+0x51/0x1e0
[  434.438171][ T6733]  vfs_get_tree+0x92/0x2a0
[  434.438194][ T6733]  do_new_mount+0x319/0xdc0
[  434.438211][ T6733]  ? cap_capable+0x123/0x460
[  434.438232][ T6733]  ? __pfx_do_new_mount+0x10/0x10
[  434.438252][ T6733]  ? ns_capable+0x89/0xe0
[  434.438277][ T6733]  ? path_mount+0x647/0x1050
[  434.438297][ T6733]  ? user_path_at+0xd4/0x160
[  434.438319][ T6733]  __se_sys_mount+0x31d/0x420
[  434.438341][ T6733]  ? __pfx___se_sys_mount+0x10/0x10
[  434.438365][ T6733]  ? __x64_sys_mount+0x20/0xc0
[  434.438382][ T6733]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  434.438402][ T6733]  do_syscall_64+0x174/0x580
[  434.438423][ T6733]  ? trace_irq_disable+0x3b/0x140
[  434.438444][ T6733]  ? clear_bhb_loop+0x40/0x90
[  434.438465][ T6733]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  434.438484][ T6733] RIP: 0033:0x7f21e707f0ca
[  434.438501][ T6733] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  434.438516][ T6733] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  434.438534][ T6733] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  434.438547][ T6733] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  434.438559][ T6733] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  434.438570][ T6733] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  434.438582][ T6733] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  434.438616][ T6733]  </TASK>
[  434.438651][ T6733] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  434.438665][ T6733] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  434.825358][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  434.909078][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  434.912648][ T6736] loop1: detected capacity change from 0 to 32768
[  434.936414][ T6736] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  434.936434][ T6736] CPU: 0 UID: 0 PID: 6736 Comm: syz.1.272 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  434.936454][ T6736] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  434.936465][ T6736] Call Trace:
[  434.936472][ T6736]  <TASK>
[  434.936479][ T6736]  dump_stack_lvl+0xe8/0x150
[  434.936510][ T6736]  sysfs_create_dir_ns+0x271/0x2a0
[  434.936532][ T6736]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  434.936564][ T6736]  ? rt_spin_unlock+0x163/0x200
[  434.936586][ T6736]  kobject_add_internal+0x62c/0xce0
[  434.936610][ T6736]  kobject_init_and_add+0x12b/0x1a0
[  434.936641][ T6736]  ? __pfx_kobject_init_and_add+0x10/0x10
[  434.936670][ T6736]  ? __raw_spin_lock_init+0x45/0x100
[  434.936690][ T6736]  ? __init_swait_queue_head+0xa8/0x150
[  434.936718][ T6736]  gfs2_sys_fs_add+0x257/0x480
[  434.936743][ T6736]  ? is_dynamic_key+0x1aa/0x1c0
[  434.936764][ T6736]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  434.936797][ T6736]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  434.936837][ T6736]  gfs2_fill_super+0x1368/0x20f0
[  434.936870][ T6736]  ? __pfx_gfs2_fill_super+0x10/0x10
[  434.936889][ T6736]  ? rt_spin_unlock+0x157/0x200
[  434.936910][ T6736]  ? sb_set_blocksize+0x11b/0x210
[  434.936936][ T6736]  ? setup_bdev_super+0x586/0x680
[  434.936960][ T6736]  get_tree_bdev_flags+0x430/0x4f0
[  434.936982][ T6736]  ? __pfx_gfs2_fill_super+0x10/0x10
[  434.937003][ T6736]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  434.937027][ T6736]  ? rcu_is_watching+0x15/0xb0
[  434.937055][ T6736]  gfs2_get_tree+0x51/0x1e0
[  434.937079][ T6736]  vfs_get_tree+0x92/0x2a0
[  434.937103][ T6736]  do_new_mount+0x319/0xdc0
[  434.937120][ T6736]  ? cap_capable+0x123/0x460
[  434.937142][ T6736]  ? __pfx_do_new_mount+0x10/0x10
[  434.937162][ T6736]  ? ns_capable+0x89/0xe0
[  434.937187][ T6736]  ? path_mount+0x647/0x1050
[  434.937208][ T6736]  ? user_path_at+0xd4/0x160
[  434.937231][ T6736]  __se_sys_mount+0x31d/0x420
[  434.937255][ T6736]  ? __pfx___se_sys_mount+0x10/0x10
[  434.937280][ T6736]  ? __x64_sys_mount+0x20/0xc0
[  434.937297][ T6736]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  434.937318][ T6736]  do_syscall_64+0x174/0x580
[  434.937340][ T6736]  ? trace_irq_disable+0x3b/0x140
[  434.937359][ T6736]  ? clear_bhb_loop+0x40/0x90
[  434.937381][ T6736]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  434.937400][ T6736] RIP: 0033:0x7f21e707f0ca
[  434.937417][ T6736] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  434.937432][ T6736] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  434.937450][ T6736] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  434.937462][ T6736] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  434.937475][ T6736] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  434.937487][ T6736] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  434.937498][ T6736] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  434.937527][ T6736]  </TASK>
[  434.937556][ T6736] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  434.937569][ T6736] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  435.282984][ T6736] Flush: task=syz.1.272[6736] dev=loop1 state=2
[  435.359592][ T6736] Teardown: task=syz.1.272[6736] dev=loop1 state=2
[  435.697358][ T6739] loop1: detected capacity change from 0 to 32768
[  435.706922][ T6739] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  435.706943][ T6739] CPU: 1 UID: 0 PID: 6739 Comm: syz.1.273 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  435.706964][ T6739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  435.706973][ T6739] Call Trace:
[  435.706980][ T6739]  <TASK>
[  435.706988][ T6739]  dump_stack_lvl+0xe8/0x150
[  435.707018][ T6739]  sysfs_create_dir_ns+0x271/0x2a0
[  435.707040][ T6739]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  435.707063][ T6739]  ? rt_spin_unlock+0x163/0x200
[  435.707085][ T6739]  kobject_add_internal+0x62c/0xce0
[  435.707108][ T6739]  kobject_init_and_add+0x12b/0x1a0
[  435.707148][ T6739]  ? __pfx_kobject_init_and_add+0x10/0x10
[  435.707185][ T6739]  ? __raw_spin_lock_init+0x45/0x100
[  435.707208][ T6739]  ? __init_swait_queue_head+0xa8/0x150
[  435.707237][ T6739]  gfs2_sys_fs_add+0x257/0x480
[  435.707261][ T6739]  ? is_dynamic_key+0x1aa/0x1c0
[  435.707281][ T6739]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  435.707315][ T6739]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  435.707357][ T6739]  gfs2_fill_super+0x1368/0x20f0
[  435.707390][ T6739]  ? __pfx_gfs2_fill_super+0x10/0x10
[  435.707409][ T6739]  ? rt_spin_unlock+0x157/0x200
[  435.707447][ T6739]  ? sb_set_blocksize+0x11b/0x210
[  435.707472][ T6739]  ? setup_bdev_super+0x586/0x680
[  435.707497][ T6739]  get_tree_bdev_flags+0x430/0x4f0
[  435.707518][ T6739]  ? __pfx_gfs2_fill_super+0x10/0x10
[  435.707536][ T6739]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  435.707561][ T6739]  ? rcu_is_watching+0x15/0xb0
[  435.707589][ T6739]  gfs2_get_tree+0x51/0x1e0
[  435.707613][ T6739]  vfs_get_tree+0x92/0x2a0
[  435.707636][ T6739]  do_new_mount+0x319/0xdc0
[  435.707653][ T6739]  ? cap_capable+0x123/0x460
[  435.707674][ T6739]  ? __pfx_do_new_mount+0x10/0x10
[  435.707694][ T6739]  ? ns_capable+0x89/0xe0
[  435.707718][ T6739]  ? path_mount+0x647/0x1050
[  435.707739][ T6739]  ? user_path_at+0xd4/0x160
[  435.707761][ T6739]  __se_sys_mount+0x31d/0x420
[  435.707785][ T6739]  ? __pfx___se_sys_mount+0x10/0x10
[  435.707810][ T6739]  ? __x64_sys_mount+0x20/0xc0
[  435.707828][ T6739]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  435.707847][ T6739]  do_syscall_64+0x174/0x580
[  435.707869][ T6739]  ? trace_irq_disable+0x3b/0x140
[  435.707889][ T6739]  ? clear_bhb_loop+0x40/0x90
[  435.707911][ T6739]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  435.707929][ T6739] RIP: 0033:0x7f21e707f0ca
[  435.707948][ T6739] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  435.707962][ T6739] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  435.707981][ T6739] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  435.707993][ T6739] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  435.708005][ T6739] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  435.708017][ T6739] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  435.708028][ T6739] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  435.708057][ T6739]  </TASK>
[  435.708096][ T6739] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  435.708110][ T6739] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  435.925332][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  435.999319][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  436.260951][ T6742] loop1: detected capacity change from 0 to 32768
[  436.265565][ T6742] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  436.265586][ T6742] CPU: 0 UID: 0 PID: 6742 Comm: syz.1.274 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  436.265606][ T6742] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  436.265619][ T6742] Call Trace:
[  436.265626][ T6742]  <TASK>
[  436.265634][ T6742]  dump_stack_lvl+0xe8/0x150
[  436.265664][ T6742]  sysfs_create_dir_ns+0x271/0x2a0
[  436.265687][ T6742]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  436.265711][ T6742]  ? rt_spin_unlock+0x163/0x200
[  436.265734][ T6742]  kobject_add_internal+0x62c/0xce0
[  436.265757][ T6742]  kobject_init_and_add+0x12b/0x1a0
[  436.265789][ T6742]  ? __pfx_kobject_init_and_add+0x10/0x10
[  436.265816][ T6742]  ? __raw_spin_lock_init+0x45/0x100
[  436.265836][ T6742]  ? __init_swait_queue_head+0xa8/0x150
[  436.265865][ T6742]  gfs2_sys_fs_add+0x257/0x480
[  436.265889][ T6742]  ? is_dynamic_key+0x1aa/0x1c0
[  436.265910][ T6742]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  436.265941][ T6742]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  436.265980][ T6742]  gfs2_fill_super+0x1368/0x20f0
[  436.266012][ T6742]  ? __pfx_gfs2_fill_super+0x10/0x10
[  436.266031][ T6742]  ? rt_spin_unlock+0x157/0x200
[  436.266052][ T6742]  ? sb_set_blocksize+0x11b/0x210
[  436.266078][ T6742]  ? setup_bdev_super+0x586/0x680
[  436.266102][ T6742]  get_tree_bdev_flags+0x430/0x4f0
[  436.266124][ T6742]  ? __pfx_gfs2_fill_super+0x10/0x10
[  436.266145][ T6742]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  436.266169][ T6742]  ? rcu_is_watching+0x15/0xb0
[  436.266198][ T6742]  gfs2_get_tree+0x51/0x1e0
[  436.266222][ T6742]  vfs_get_tree+0x92/0x2a0
[  436.266245][ T6742]  do_new_mount+0x319/0xdc0
[  436.266263][ T6742]  ? cap_capable+0x123/0x460
[  436.266284][ T6742]  ? __pfx_do_new_mount+0x10/0x10
[  436.266303][ T6742]  ? ns_capable+0x89/0xe0
[  436.266327][ T6742]  ? path_mount+0x647/0x1050
[  436.266347][ T6742]  ? user_path_at+0xd4/0x160
[  436.266370][ T6742]  __se_sys_mount+0x31d/0x420
[  436.266393][ T6742]  ? __pfx___se_sys_mount+0x10/0x10
[  436.266418][ T6742]  ? __x64_sys_mount+0x20/0xc0
[  436.266435][ T6742]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  436.266455][ T6742]  do_syscall_64+0x174/0x580
[  436.266476][ T6742]  ? trace_irq_disable+0x3b/0x140
[  436.266497][ T6742]  ? clear_bhb_loop+0x40/0x90
[  436.266519][ T6742]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  436.266536][ T6742] RIP: 0033:0x7f21e707f0ca
[  436.266559][ T6742] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  436.266575][ T6742] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  436.266593][ T6742] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  436.266606][ T6742] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  436.266618][ T6742] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  436.266630][ T6742] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  436.266641][ T6742] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  436.266670][ T6742]  </TASK>
[  436.266704][ T6742] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  436.266717][ T6742] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  436.412774][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  436.560577][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  436.862551][ T6745] loop1: detected capacity change from 0 to 32768
[  436.870630][ T6745] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  436.870650][ T6745] CPU: 0 UID: 0 PID: 6745 Comm: syz.1.275 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  436.870669][ T6745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  436.870679][ T6745] Call Trace:
[  436.870686][ T6745]  <TASK>
[  436.870693][ T6745]  dump_stack_lvl+0xe8/0x150
[  436.870722][ T6745]  sysfs_create_dir_ns+0x271/0x2a0
[  436.870741][ T6745]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  436.870762][ T6745]  ? rt_spin_unlock+0x163/0x200
[  436.870782][ T6745]  kobject_add_internal+0x62c/0xce0
[  436.870803][ T6745]  kobject_init_and_add+0x12b/0x1a0
[  436.870832][ T6745]  ? __pfx_kobject_init_and_add+0x10/0x10
[  436.870857][ T6745]  ? __raw_spin_lock_init+0x45/0x100
[  436.870876][ T6745]  ? __init_swait_queue_head+0xa8/0x150
[  436.870903][ T6745]  gfs2_sys_fs_add+0x257/0x480
[  436.870927][ T6745]  ? is_dynamic_key+0x1aa/0x1c0
[  436.870946][ T6745]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  436.870977][ T6745]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  436.871014][ T6745]  gfs2_fill_super+0x1368/0x20f0
[  436.871052][ T6745]  ? __pfx_gfs2_fill_super+0x10/0x10
[  436.871069][ T6745]  ? rt_spin_unlock+0x157/0x200
[  436.871089][ T6745]  ? sb_set_blocksize+0x11b/0x210
[  436.871113][ T6745]  ? setup_bdev_super+0x586/0x680
[  436.871136][ T6745]  get_tree_bdev_flags+0x430/0x4f0
[  436.871156][ T6745]  ? __pfx_gfs2_fill_super+0x10/0x10
[  436.871174][ T6745]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  436.871197][ T6745]  ? rcu_is_watching+0x15/0xb0
[  436.871221][ T6745]  gfs2_get_tree+0x51/0x1e0
[  436.871245][ T6745]  vfs_get_tree+0x92/0x2a0
[  436.871267][ T6745]  do_new_mount+0x319/0xdc0
[  436.871284][ T6745]  ? cap_capable+0x123/0x460
[  436.871304][ T6745]  ? __pfx_do_new_mount+0x10/0x10
[  436.871323][ T6745]  ? ns_capable+0x89/0xe0
[  436.871347][ T6745]  ? path_mount+0x647/0x1050
[  436.871367][ T6745]  ? user_path_at+0xd4/0x160
[  436.871387][ T6745]  __se_sys_mount+0x31d/0x420
[  436.871409][ T6745]  ? __pfx___se_sys_mount+0x10/0x10
[  436.871433][ T6745]  ? __x64_sys_mount+0x20/0xc0
[  436.871450][ T6745]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  436.871469][ T6745]  do_syscall_64+0x174/0x580
[  436.871490][ T6745]  ? trace_irq_disable+0x3b/0x140
[  436.871508][ T6745]  ? clear_bhb_loop+0x40/0x90
[  436.871528][ T6745]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  436.871547][ T6745] RIP: 0033:0x7f21e707f0ca
[  436.871565][ T6745] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  436.871578][ T6745] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  436.871595][ T6745] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  436.871608][ T6745] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  436.871619][ T6745] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  436.871630][ T6745] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  436.871640][ T6745] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  436.871666][ T6745]  </TASK>
[  436.871688][ T6745] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  436.871703][ T6745] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  437.245534][ T5989] Flush: task=udevd[5989] dev=loop1 state=2
[  437.319224][ T5989] Teardown: task=udevd[5989] dev=loop1 state=2
[  437.351615][ T6748] loop1: detected capacity change from 0 to 32768
[  437.366433][ T6748] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[  437.366454][ [  437.366454][ T6748] CPU: 1 UID: 0 PID: 6748 Comm: syz.1.276 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  437.366474][ T6748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  437.366484][ T6748] Call Trace:
[  437.366491][ T6748]  <TASK>
[  437.366499][ T6748]  dump_stack_lvl+0xe8/0x150
[  437.366530][ T6748]  sysfs_create_dir_ns+0x271/0x2a0
[  437.366552][ T6748]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  437.366576][ T6748]  ? rt_spin_unlock+0x163/0x200
[  437.366598][ T6748]  kobject_add_internal+0x62c/0xce0
[  437.366623][ T6748]  kobject_init_and_add+0x12b/0x1a0
[  437.366654][ T6748]  ? __pfx_kobject_init_and_add+0x10/0x10
[  437.366683][ T6748]  ? __raw_spin_lock_init+0x45/0x100
[  437.366703][ T6748]  ? __init_swait_queue_head+0xa8/0x150
[  437.366733][ T6748]  gfs2_sys_fs_add+0x257/0x480
[  437.366757][ T6748]  ? is_dynamic_key+0x1aa/0x1c0
[  437.366779][ T6748]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[  437.366811][ T6748]  ? __pfx_alloc_workqueue_noprof+0x10/0x10
[  437.366850][ T6748]  gfs2_fill_super+0x1368/0x20f0
[  437.366887][ T6748]  ? __pfx_gfs2_fill_super+0x10/0x10
[  437.366906][ T6748]  ? rt_spin_unlock+0x157/0x200
[  437.366928][ T6748]  ? sb_set_blocksize+0x11b/0x210
[  437.366953][ T6748]  ? setup_bdev_super+0x586/0x680
[  437.366977][ T6748]  get_tree_bdev_flags+0x430/0x4f0
[  437.366998][ T6748]  ? __pfx_gfs2_fill_super+0x10/0x10
[  437.367019][ T6748]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  437.367043][ T6748]  ? rcu_is_watching+0x15/0xb0
[  437.367071][ T6748]  gfs2_get_tree+0x51/0x1e0
[  437.367095][ T6748]  vfs_get_tree+0x92/0x2a0
[  437.367118][ T6748]  do_new_mount+0x319/0xdc0
[  437.367136][ T6748]  ? cap_capable+0x123/0x460
[  437.367157][ T6748]  ? __pfx_do_new_mount+0x10/0x10
[  437.367178][ T6748]  ? ns_capable+0x89/0xe0
[  437.367201][ T6748]  ? path_mount+0x647/0x1050
[  437.367222][ T6748]  ? user_path_at+0xd4/0x160
[  437.367245][ T6748]  __se_sys_mount+0x31d/0x420
[  437.367269][ T6748]  ? __pfx___se_sys_mount+0x10/0x10
[  437.367318][ T6748]  ? __x64_sys_mount+0x20/0xc0
[  437.367335][ T6748]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  437.367355][ T6748]  do_syscall_64+0x174/0x580
[  437.367376][ T6748]  ? trace_irq_disable+0x3b/0x140
[  437.367396][ T6748]  ? clear_bhb_loop+0x40/0x90
[  437.367418][ T6748]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  437.367436][ T6748] RIP: 0033:0x7f21e707f0ca
[  437.367454][ T6748] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[  437.367469][ T6748] RSP: 002b:00007fff10e8c4e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  437.367487][ T6748] RAX: ffffffffffffffda RBX: 00007fff10e8c570 RCX: 00007f21e707f0ca
[  437.367499][ T6748] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007fff10e8c530
[  437.367512][ T6748] RBP: 000020000001f680 R08: 00007fff10e8c570 R09: 0000000000000084
[  437.367524][ T6748] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  437.367536][ T6748] R13: 00007fff10e8c530 R14: 000000000001f707 R15: 0000200000000000
[  437.367565][ T6748]  </TASK>
[  437.367711][ T6748] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[  437.367725][ T6748] gfs2: fsid=syz:syz: error -17 adding sysfs files
[  437.381993][ T6748] Flush: task=syz.1.276[6748] dev=loop1 state=2
[  437.389208][   T38] INFO: task kworker/1:2:822 blocked in I/O wait for more than 143 seconds.
[  437.389229][   T38]       Not tainted syzkaller #0
[  437.389238][   T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  437.389261][   T38] task:kworker/1:2     state:D stack:25128 pid:822   tgid:822   ppid:2      task_flags:0x4208060 flags:0x00080000
[  437.389308][   T38] Workqueue: gfs2_recovery gfs2_recover_func
[  437.389333][   T38] Call Trace:
[  437.389340][   T38]  <TASK>
[  437.389352][   T38]  __schedule+0x1709/0x5530
[  437.389401][   T38]  ? __pfx___schedule+0x10/0x10
[  437.389430][   T38]  ? schedule+0x90/0x2b0
[  437.389454][   T38]  schedule+0x164/0x2b0
[  437.389477][   T38]  io_schedule+0x7f/0xd0
[  437.389513][   T38]  folio_wait_bit_common+0x83c/0xbc0
[  437.389555][   T38]  ? __pfx_folio_wait_bit_common+0x10/0x10
[  437.389582][   T38]  ? __pfx_wake_page_function+0x10/0x10
[  437.389623][   T38]  gfs2_jhead_process_page+0x17f/0x670
[  437.389657][   T38]  ? __pfx_gfs2_jhead_process_page+0x10/0x10
[  437.389699][   T38]  gfs2_find_jhead+0xbe0/0xd20
[  437.389744][   T38]  gfs2_recover_func+0x6bd/0x1f00
[  437.389776][   T38]  ? __lock_acquire+0x6df/0x2e40
[  437.389814][   T38]  ? __pfx_gfs2_recover_func+0x10/0x10
[  437.389836][   T38]  ? __lock_acquire+0x6df/0x2e40
[  437.389856][   T38]  ? look_up_lock_class+0x57/0x110
[  437.389879][   T38]  ? register_lock_class+0x31/0x2e0
[  437.389903][   T38]  ? __lock_acquire+0x6df/0x2e40
[  437.389935][   T38]  ? do_raw_spin_lock+0x12b/0x2f0
[  437.389973][   T38]  ? rcu_is_watching+0x15/0xb0
[  437.389998][   T38]  ? process_one_work+0x7fd/0x1480
[  437.390021][   T38]  process_one_work+0xaaf/0x1480
[  437.390063][   T38]  ? __pfx_process_one_work+0x10/0x10
[  437.390083][   T38]  ? do_raw_spin_lock+0x12b/0x2f0
[  437.390106][   T38]  ? assign_work+0x3cf/0x5d0
[  437.390133][   T38]  worker_thread+0xb05/0x10d0
[  437.390164][   T38]  ? __kthread_parkme+0x71/0x1f0
[  437.390197][   T38]  kthread+0x388/0x470
[  437.390215][   T38]  ? __pfx_worker_thread+0x10/0x10
[  437.390236][   T38]  ? __pfx_kthread+0x10/0x10
[  437.390254][   T38]  ret_from_fork+0x514/0xb70
[  437.390273][   T38]  ? __pfx_ret_from_fork+0x10/0x10
[  437.390290][   T38]  ? __switch_to+0xc89/0x1420
[  437.390316][   T38]  ? __pfx_kthread+0x10/0x10
[  437.390333][   T38]  ret_from_fork_asm+0x1a/0x30
[  437.390365][   T38]  </TASK>
[  437.390472][   T38] INFO: task syz.0.18:5984 blocked for more than 143 seconds.
[  437.390485][   T38]       Not tainted syzkaller #0
[  437.390494][   T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  437.390502][   T38] task:syz.0.18        state:D stack:25104 pid:5984  tgid:5984  ppid:5820   task_flags:0x400140 flags:0x00080002
[  437.390544][   T38] Call Trace:
[  437.390550][   T38]  <TASK>
[  437.390560][   T38]  __schedule+0x1709/0x5530
[  437.390630][   T38]  ? __pfx___schedule+0x10/0x10
[  437.390661][   T38]  ? schedule+0x90/0x2b0
[  437.390685][   T38]  schedule+0x164/0x2b0
[  437.390708][   T38]  bit_wait+0x11/0xd0
[  437.390731][   T38]  __wait_on_bit+0xac/0x2f0
[  437.390753][   T38]  ? __pfx_bit_wait+0x10/0x10
[  437.390777][   T38]  out_of_line_wait_on_bit+0x13b/0x190
[  437.390809][   T38]  ? __pfx_bit_wait+0x10/0x10
[  437.390830][   T38]  ? __pfx_out_of_line_wait_on_bit+0x10/0x10
[  437.390855][   T38]  ? __pfx_wake_bit_function+0x10/0x10
[  437.390891][   T38]  gfs2_recover_journal+0xda/0x140
[  437.390914][   T38]  init_journal+0x1af4/0x2330
[  437.390946][   T38]  ? init_inodes+0xdb/0x320
[  437.390972][   T38]  ? __pfx_init_journal+0x10/0x10
[  437.391005][   T38]  ? snprintf+0xe8/0x140
[  437.391026][   T38]  ? init_inodes+0xdb/0x320
[  437.391047][   T38]  ? __pfx_snprintf+0x10/0x10
[  437.391068][   T38]  ? gfs2_glock_nq_num+0x13d/0x170
[  437.391095][   T38]  init_inodes+0xdb/0x320
[  437.391118][   T38]  gfs2_fill_super+0x1982/0x20f0
[  437.391151][   T38]  ? __pfx_gfs2_fill_super+0x10/0x10
[  437.391171][   T38]  ? rt_spin_unlock+0x157/0x200
[  437.391192][   T38]  ? init_locking+0xb8/0x210
[  437.391212][   T38]  ? sb_set_blocksize+0x11b/0x210
[  437.391238][   T38]  ? setup_bdev_super+0x586/0x680
[  437.391261][   T38]  get_tree_bdev_flags+0x430/0x4f0
[  437.391281][   T38]  ? __pfx_gfs2_fill_super+0x10/0x10
[  437.391301][   T38]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[  437.391327][   T38]  ? rcu_is_watching+0x15/0xb0
[  437.391356][   T38]  gfs2_get_tree+0x51/0x1e0
[  437.391380][   T38]  vfs_get_tree+0x92/0x2a0
[  437.391405][   T38]  do_new_mount+0x319/0xdc0
[  437.391423][   T38]  ? cap_capable+0x123/0x460
[  437.391445][   T38]  ? __pfx_do_new_mount+0x10/0x10
[  437.391466][   T38]  ? ns_capable+0x89/0xe0
[  437.391490][   T38]  ? path_mount+0x647/0x1050
[  437.391511][   T38]  ? user_path_at+0xd4/0x160
[  437.391534][   T38]  __se_sys_mount+0x31d/0x420
[  437.391558][   T38]  ? __pfx___se_sys_mount+0x10/0x10
[  437.391582][   T38]  ? __x64_sys_mount+0x20/0xc0
[  437.391600][   T38]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  437.391621][   T38]  do_syscall_64+0x174/0x580
[  437.391643][   T38]  ? trace_irq_disable+0x3b/0x140
[  437.391664][   T38]  ? clear_bhb_loop+0x40/0x90
[  437.391687][   T38]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  437.391706][   T38] RIP: 0033:0x7f59dbebf0ca
[  437.391722][   T38] RSP: 002b:00007ffc5c324a08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  437.391740][   T38] RAX: ffffffffffffffda RBX: 00007ffc5c324a90 RCX: 00007f59dbebf0ca
[  437.391752][   T38] RDX: 000020000001f680 RSI: 000020000001f6c0 RDI: 00007ffc5c324a50
[  437.391764][   T38] RBP: 000020000001f680 R08: 00007ffc5c324a90 R09: 0000000000000084
[  437.391775][   T38] R10: 0000000000000084 R11: 0000000000000246 R12: 000020000001f6c0
[  437.391787][   T38] R13: 00007ffc5c324a50 R14: 000000000001f707 R15: 0000200000000000
[  437.391822][   T38]  </TASK>
[  437.391849][   T38] 
[  437.391849][   T38] Showing all locks held in the system:
[  437.391858][   T38] 4 locks held by pr/legacy/17:
[  437.391869][   T38]  #0: ffffffff8e1b5980 (console_lock){+.+.}-{0:0}, at: legacy_kthread_func+0x1a3/0x250
[  437.391917][   T38]  #1: ffffffff8e09d278 (console_srcu){....}-{0:0}, at: console_flush_one_record+0xfa/0xb50
[  437.391960][   T38]  #2: ffffffff99e41458 (&port_lock_key){+.+.}-{3:3}, at: serial8250_console_write+0x17c/0x1b40
[  437.392008][   T38]  #3: ffffffff8e1c37c0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400
[  437.392051][   T38] 1 lock held by khungtaskd/38:
[  437.392060][   T38]  #0: ffffffff8e1c37c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
[  437.392105][   T38] 2 locks held by kworker/1:2/822:
[  437.392115][   T38]  #0: ffff88801f33fd38 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work+0x7fd/0x1480
[  437.392153][   T38]  #1: ffffc9000531fc60 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work+0x7fd/0x1480
[  437.392210][   T38] 2 locks held by getty/5354:
[  437.392220][   T38]  #0: ffff888036ddd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[  437.392264][   T38]  #1: ffffc90003cc62e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360
[  437.392306][   T38] 1 lock held by syz.0.18/5984:
[  437.392316][   T38]  #0: ffff8880410d40e0 (&type->s_umount_key#53/1){+.+.}-{4:4}, at: sget_fc+0x97c/0x1a60
[  437.392364][   T38] 1 lock held by udevd/5989:
[  437.392373][   T38]  #0: ffffffff8e1c37c0 (rcu_read_lock){....}-{1:3}, at: find_lock_entries+0x12a/0xad0
[  437.392414][   T38] 
[  437.392419][   T38] =============================================
[  437.392419][   T38] 
[  437.392438][   T38] NMI backtrace for cpu 0
[  437.392451][   T38] CPU: 0 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  437.392470][   T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  437.392480][   T38] Call Trace:
[  437.392488][   T38]  <TASK>
[  437.392495][   T38]  dump_stack_lvl+0xe8/0x150
[  437.392521][   T38]  nmi_cpu_backtrace+0x274/0x2d0
[  437.392541][   T38]  ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10
[  437.392570][   T38]  nmi_trigger_cpumask_backtrace+0x17a/0x380
[  437.392592][   T38]  sys_info+0x135/0x170
[  437.392608][   T38]  watchdog+0xfd7/0x1030
[  437.392633][   T38]  ? watchdog+0x1c7/0x1030
[  437.392658][   T38]  kthread+0x388/0x470
[  437.392675][   T38]  ? __pfx_watchdog+0x10/0x10
[  437.392691][   T38]  ? __pfx_kthread+0x10/0x10
[  437.392709][   T38]  ret_from_fork+0x514/0xb70
[  437.392730][   T38]  ? __pfx_ret_from_fork+0x10/0x10
[  437.392747][   T38]  ? __switch_to+0xc89/0x1420
[  437.392772][   T38]  ? __pfx_kthread+0x10/0x10
[  437.392797][   T38]  ret_from_fork_asm+0x1a/0x30
[  437.392827][   T38]  </TASK>
[  437.392834][   T38] Sending NMI from CPU 0 to CPUs 1:
[  437.392862][    C1] NMI backtrace for cpu 1
[  437.392875][    C1] CPU: 1 UID: 0 PID: 4943 Comm: syslogd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  437.392892][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  437.392901][    C1] RIP: 0010:preempt_count_add+0x95/0x190
[  437.392923][    C1] Code: b6 c0 3d f5 00 00 00 73 5d 65 8b 05 75 e8 09 11 25 ff ff ff 7f 39 f8 75 42 48 8b 5c 24 18 48 89 df e8 6f 95 0d 00 85 c0 74 09 <31> db 31 ff e8 62 95 0d 00 65 4c 8b 35 22 e8 09 11 49 81 c6 f8 15
[  437.392937][    C1] RSP: 0018:ffffc900109f7808 EFLAGS: 00000002
[  437.392950][    C1] RAX: 0000000000000001 RBX: ffffffff8b46d314 RCX: ffffffff99a8b501
[  437.392961][    C1] RDX: 0000000000000000 RSI: ffffffff8bca5e60 RDI: ffffffff8b46d314
[  437.392972][    C1] RBP: ffffc900109f7928 R08: ffffffff8faf37f7 R09: 1ffffffff1f5e6fe
[  437.392983][    C1] R10: dffffc0000000000 R11: fffffbfff1f5e6ff R12: dffffc0000000000
[  437.392994][    C1] R13: 1ffff9200213ef10 R14: ffff888037a1ad40 R15: dffffc0000000000
[  437.393006][    C1] FS:  00007fae8268bc80(0000) GS:ffff888125d49000(0000) knlGS:0000000000000000
[  437.393019][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  437.393030][    C1] CR2: 00007f21e712cc2b CR3: 0000000037dbc000 CR4: 00000000003526f0
[  437.393044][    C1] Call Trace:
[  437.393049][    C1]  <TASK>
[  437.393056][    C1]  _raw_spin_lock_irqsave+0x24/0x60
[  437.393075][    C1]  rt_mutex_slowunlock+0xbf/0xa20
[  437.393092][    C1]  ? reacquire_held_locks+0x117/0x1a0
[  437.393111][    C1]  ? rt_spin_lock+0x1e0/0x400
[  437.393125][    C1]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  437.393146][    C1]  ? __skb_try_recv_datagram+0xa9/0x1b0
[  437.393169][    C1]  rt_spin_unlock+0x10d/0x200
[  437.393185][    C1]  __skb_try_recv_datagram+0xa9/0x1b0
[  437.393207][    C1]  __unix_dgram_recvmsg+0x219/0xd70
[  437.393233][    C1]  ? __pfx___unix_dgram_recvmsg+0x10/0x10
[  437.393259][    C1]  ? rcu_is_watching+0x15/0xb0
[  437.393277][    C1]  ? trace_hrtimer_start+0x82/0x200
[  437.393299][    C1]  ? unix_dgram_recvmsg+0xae/0xd0
[  437.393314][    C1]  ? __pfx_unix_dgram_recvmsg+0x10/0x10
[  437.393331][    C1]  sock_recvmsg_nosec+0x130/0x170
[  437.393348][    C1]  sock_read_iter+0x26d/0x330
[  437.393367][    C1]  ? __lock_acquire+0x6df/0x2e40
[  437.393384][    C1]  ? __pfx_sock_read_iter+0x10/0x10
[  437.393408][    C1]  ? bpf_lsm_file_permission+0x9/0x20
[  437.393423][    C1]  ? security_file_permission+0x68/0x220
[  437.393443][    C1]  vfs_read+0x59e/0xa90
[  437.393458][    C1]  ? lock_acquire+0x115/0x350
[  437.393477][    C1]  ? __pfx_vfs_read+0x10/0x10
[  437.393494][    C1]  ? ktime_expiry_to_cycles+0x4e/0x1e0
[  437.393510][    C1]  ? seqcount_lockdep_reader_access+0xd4/0x100
[  437.393533][    C1]  ksys_read+0x156/0x270
[  437.393550][    C1]  ? __pfx_ksys_read+0x10/0x10
[  437.393570][    C1]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  437.393586][    C1]  do_syscall_64+0x174/0x580
[  437.393605][    C1]  ? clear_bhb_loop+0x40/0x90
[  437.393623][    C1]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  437.393638][    C1] RIP: 0033:0x7fae827db407
[  437.393650][    C1] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
[  437.393663][    C1] RSP: 002b:00007ffc381bac80 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[  437.393678][    C1] RAX: ffffffffffffffda RBX: 00007fae8268bc80 RCX: 00007fae827db407
[  437.393689][    C1] RDX: 00000000000000ff RSI: 000055ea5c8f4950 RDI: 0000000000000000
[  437.393698][    C1] RBP: 000055ea5c8f4910 R08: 0000000000000000 R09: 0000000000000000
[  437.393708][    C1] R10: 0000000000000000 R11: 0000000000000202 R12: 000055ea5c8f49f1
[  437.393719][    C1] R13: 0000000000000000 R14: 000055ea5c8f4950 R15: 000055ea318fcd98
[  437.393737][    C1]  </TASK>
[  437.393864][   T38] Kernel panic - not syncing: hung_task: blocked tasks
[  437.393877][   T38] CPU: 0 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  437.393896][   T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  437.393906][   T38] Call Trace:
[  437.393913][   T38]  <TASK>
[  437.393920][   T38]  vpanic+0x56c/0xa60
[  437.393941][   T38]  ? __pfx_vpanic+0x10/0x10
[  437.393967][   T38]  panic+0xc5/0xd0
[  437.393984][   T38]  ? __pfx_panic+0x10/0x10
[  437.394004][   T38]  ? wq_watchdog_touch+0xf9/0x160
[  437.394026][   T38]  ? nmi_trigger_cpumask_backtrace+0x247/0x380
[  437.394048][   T38]  watchdog+0x1030/0x1030
[  437.394073][   T38]  ? watchdog+0x1c7/0x1030
[  437.394096][   T38]  kthread+0x388/0x470
[  437.394113][   T38]  ? __pfx_watchdog+0x10/0x10
[  437.394130][   T38]  ? __pfx_kthread+0x10/0x10
[  437.394148][   T38]  ret_from_fork+0x514/0xb70
[  437.394167][   T38]  ? __pfx_ret_from_fork+0x10/0x10
[  437.394185][   T38]  ? __switch_to+0xc89/0x1420
[  437.394209][   T38]  ? __pfx_kthread+0x10/0x10
[  437.394227][   T38]  ret_from_fork_asm+0x1a/0x30
[  437.394258][   T38]  </TASK>
[  437.394549][   T38] Kernel Offset: disabled