356540][ T8395] ? __init_swait_queue_head+0xa9/0x150
[ 437.356577][ T8395] gfs2_sys_fs_add+0x257/0x480
[ 437.356598][ T8395] ? is_dynamic_key+0x1ac/0x1c0
[ 437.356618][ T8395] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 437.356649][ T8395] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 437.356682][ T8395] gfs2_fill_super+0x141c/0x2220
[ 437.356716][ T8395] ? __pfx_gfs2_fill_super+0x10/0x10
[ 437.356733][ T8395] ? rt_spin_unlock+0x14f/0x200
[ 437.356761][ T8395] ? sb_set_blocksize+0x11b/0x210
[ 437.356782][ T8395] ? setup_bdev_super+0x4c1/0x5b0
[ 437.356809][ T8395] get_tree_bdev_flags+0x431/0x4f0
[ 437.356833][ T8395] ? __pfx_gfs2_fill_super+0x10/0x10
[ 437.356852][ T8395] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 437.356874][ T8395] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 437.356911][ T8395] gfs2_get_tree+0x51/0x1e0
[ 437.356933][ T8395] vfs_get_tree+0x92/0x2a0
[ 437.356959][ T8395] do_new_mount+0x341/0xd30
[ 437.356978][ T8395] ? apparmor_capable+0x126/0x170
[ 437.357003][ T8395] ? __pfx_do_new_mount+0x10/0x10
[ 437.357023][ T8395] ? ns_capable+0x89/0xe0
[ 437.357050][ T8395] ? user_path_at+0xd4/0x160
[ 437.357078][ T8395] ? user_path_at+0xd4/0x160
[ 437.357101][ T8395] __se_sys_mount+0x31d/0x420
[ 437.357125][ T8395] ? __pfx___se_sys_mount+0x10/0x10
[ 437.357153][ T8395] ? __x64_sys_mount+0x20/0xc0
[ 437.357171][ T8395] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 437.357190][ T8395] do_syscall_64+0x15f/0xf80
[ 437.357209][ T8395] ? trace_irq_disable+0x3b/0x140
[ 437.357233][ T8395] ? clear_bhb_loop+0x40/0x90
[ 437.357254][ T8395] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 437.357271][ T8395] RIP: 0033:0x7fb6c94bc18a
[ 437.357290][ T8395] 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
[ 437.357304][ T8395] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 437.357325][ T8395] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 437.357338][ T8395] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 437.357352][ T8395] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 437.357365][ T8395] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 437.357377][ T8395] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 437.357407][ T8395]
[ 437.367382][ T8395] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 437.367405][ T8395] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 437.911049][ T6200] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 437.959232][ T6880] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 438.363459][ T8401] loop0: detected capacity change from 0 to 32768
[ 438.395595][ T8401] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 438.395614][ T8401] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 438.490965][ T8401] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 438.521290][ T5782] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 438.521309][ T5782] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 438.646588][ T8406] loop1: detected capacity change from 0 to 32768
[ 438.674092][ T8406] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 438.674115][ T8406] CPU: 0 UID: 0 PID: 8406 Comm: syz.1.392 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 438.674137][ T8406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 438.674149][ T8406] Call Trace:
[ 438.674156][ T8406]
[ 438.674165][ T8406] dump_stack_lvl+0xe8/0x150
[ 438.674205][ T8406] sysfs_create_dir_ns+0x271/0x2a0
[ 438.674235][ T8406] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 438.674263][ T8406] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 438.674289][ T8406] ? rt_spin_unlock+0x160/0x200
[ 438.674317][ T8406] kobject_add_internal+0x631/0xd10
[ 438.674350][ T8406] kobject_init_and_add+0x12b/0x1a0
[ 438.674381][ T8406] ? __pfx_kobject_init_and_add+0x10/0x10
[ 438.674407][ T8406] ? __raw_spin_lock_init+0x45/0x100
[ 438.674435][ T8406] ? __init_swait_queue_head+0xa9/0x150
[ 438.674475][ T8406] gfs2_sys_fs_add+0x257/0x480
[ 438.674497][ T8406] ? is_dynamic_key+0x1ac/0x1c0
[ 438.674517][ T8406] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 438.674549][ T8406] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 438.674583][ T8406] gfs2_fill_super+0x141c/0x2220
[ 438.674618][ T8406] ? __pfx_gfs2_fill_super+0x10/0x10
[ 438.674636][ T8406] ? rt_spin_unlock+0x14f/0x200
[ 438.674665][ T8406] ? sb_set_blocksize+0x11b/0x210
[ 438.674687][ T8406] ? setup_bdev_super+0x4c1/0x5b0
[ 438.674716][ T8406] get_tree_bdev_flags+0x431/0x4f0
[ 438.674742][ T8406] ? __pfx_gfs2_fill_super+0x10/0x10
[ 438.674761][ T8406] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 438.674785][ T8406] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 438.674820][ T8406] gfs2_get_tree+0x51/0x1e0
[ 438.674843][ T8406] vfs_get_tree+0x92/0x2a0
[ 438.674871][ T8406] do_new_mount+0x341/0xd30
[ 438.674891][ T8406] ? apparmor_capable+0x126/0x170
[ 438.674917][ T8406] ? __pfx_do_new_mount+0x10/0x10
[ 438.674939][ T8406] ? ns_capable+0x89/0xe0
[ 438.674966][ T8406] ? user_path_at+0xd4/0x160
[ 438.674993][ T8406] ? user_path_at+0xd4/0x160
[ 438.675018][ T8406] __se_sys_mount+0x31d/0x420
[ 438.675046][ T8406] ? __pfx___se_sys_mount+0x10/0x10
[ 438.675073][ T8406] ? __x64_sys_mount+0x20/0xc0
[ 438.675094][ T8406] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 438.675115][ T8406] do_syscall_64+0x15f/0xf80
[ 438.675134][ T8406] ? trace_irq_disable+0x3b/0x140
[ 438.675160][ T8406] ? clear_bhb_loop+0x40/0x90
[ 438.675182][ T8406] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 438.675200][ T8406] RIP: 0033:0x7f0a5e2cc18a
[ 438.675219][ T8406] 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
[ 438.675233][ T8406] RSP: 002b:00007f0a5d92de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 438.675254][ T8406] RAX: ffffffffffffffda RBX: 00007f0a5d92dee0 RCX: 00007f0a5e2cc18a
[ 438.675268][ T8406] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f0a5d92dea0
[ 438.675280][ T8406] RBP: 00002000000124c0 R08: 00007f0a5d92dee0 R09: 0000000000000000
[ 438.675298][ T8406] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 438.675309][ T8406] R13: 00007f0a5d92dea0 R14: 0000000000012588 R15: 0000200000000000
[ 438.675337][ T8406]
[ 438.675373][ T8406] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 438.675388][ T8406] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 438.710563][ T5782] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 189ms
[ 438.710794][ T5782] gfs2: fsid=syz:syz.0: jid=0: Done
[ 438.714152][ T8401] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 438.833042][ T8401] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 439.310895][ T8412] loop4: detected capacity change from 0 to 32768
[ 439.418758][ T8412] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 439.418777][ T8412] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 439.522706][ T6742] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 439.542479][ T6880] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 439.571772][ T8412] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 439.592777][ T5782] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 439.592798][ T5782] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 439.745388][ T8416] loop2: detected capacity change from 0 to 32768
[ 439.771698][ T8416] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 439.771722][ T8416] CPU: 0 UID: 0 PID: 8416 Comm: syz.2.395 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 439.771743][ T8416] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 439.771753][ T8416] Call Trace:
[ 439.771760][ T8416]
[ 439.771768][ T8416] dump_stack_lvl+0xe8/0x150
[ 439.771794][ T8416] sysfs_create_dir_ns+0x271/0x2a0
[ 439.771817][ T8416] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 439.771843][ T8416] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 439.771868][ T8416] ? rt_spin_unlock+0x160/0x200
[ 439.771895][ T8416] kobject_add_internal+0x631/0xd10
[ 439.771926][ T8416] kobject_init_and_add+0x12b/0x1a0
[ 439.771954][ T8416] ? __pfx_kobject_init_and_add+0x10/0x10
[ 439.771979][ T8416] ? __raw_spin_lock_init+0x45/0x100
[ 439.772016][ T8416] ? __init_swait_queue_head+0xa9/0x150
[ 439.772044][ T8416] gfs2_sys_fs_add+0x257/0x480
[ 439.772067][ T8416] ? is_dynamic_key+0x1ac/0x1c0
[ 439.772086][ T8416] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 439.772117][ T8416] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 439.772153][ T8416] gfs2_fill_super+0x141c/0x2220
[ 439.772186][ T8416] ? __pfx_gfs2_fill_super+0x10/0x10
[ 439.772204][ T8416] ? rt_spin_unlock+0x14f/0x200
[ 439.772230][ T8416] ? sb_set_blocksize+0x11b/0x210
[ 439.772249][ T8416] ? setup_bdev_super+0x4c1/0x5b0
[ 439.772276][ T8416] get_tree_bdev_flags+0x431/0x4f0
[ 439.772302][ T8416] ? __pfx_gfs2_fill_super+0x10/0x10
[ 439.772321][ T8416] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 439.772343][ T8416] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 439.772377][ T8416] gfs2_get_tree+0x51/0x1e0
[ 439.772400][ T8416] vfs_get_tree+0x92/0x2a0
[ 439.772428][ T8416] do_new_mount+0x341/0xd30
[ 439.772448][ T8416] ? apparmor_capable+0x126/0x170
[ 439.772474][ T8416] ? __pfx_do_new_mount+0x10/0x10
[ 439.772495][ T8416] ? ns_capable+0x89/0xe0
[ 439.772523][ T8416] ? user_path_at+0xd4/0x160
[ 439.772551][ T8416] ? user_path_at+0xd4/0x160
[ 439.772576][ T8416] __se_sys_mount+0x31d/0x420
[ 439.772603][ T8416] ? __pfx___se_sys_mount+0x10/0x10
[ 439.772630][ T8416] ? __x64_sys_mount+0x20/0xc0
[ 439.772651][ T8416] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 439.772671][ T8416] do_syscall_64+0x15f/0xf80
[ 439.772691][ T8416] ? trace_irq_disable+0x3b/0x140
[ 439.772716][ T8416] ? clear_bhb_loop+0x40/0x90
[ 439.772738][ T8416] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 439.772756][ T8416] RIP: 0033:0x7fb6c94bc18a
[ 439.772773][ T8416] 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
[ 439.772790][ T8416] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 439.772810][ T8416] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 439.772824][ T8416] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 439.772838][ T8416] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 439.772851][ T8416] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 439.772864][ T8416] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 439.772894][ T8416]
[ 439.772934][ T8416] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 439.784339][ T8416] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 439.921545][ T5782] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 328ms
[ 439.921783][ T5782] gfs2: fsid=syz:syz.0: jid=0: Done
[ 439.921844][ T8412] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 439.975071][ T8412] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 440.342418][ T1335] ieee802154 phy0 wpan0: encryption failed: -22
[ 440.342516][ T1335] ieee802154 phy1 wpan1: encryption failed: -22
[ 440.568787][ T6916] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 440.602798][ T6673] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 440.894332][ T8425] loop1: detected capacity change from 0 to 32768
[ 440.980422][ T8425] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 440.980444][ T8425] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 441.095022][ T8425] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 441.110959][ T37] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 441.110980][ T37] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 441.314991][ T37] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 204ms
[ 441.315237][ T37] gfs2: fsid=syz:syz.0: jid=0: Done
[ 441.316858][ T8425] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 441.472736][ T8427] loop0: detected capacity change from 0 to 32768
[ 441.484574][ T8427] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 441.484595][ T8427] CPU: 1 UID: 0 PID: 8427 Comm: syz.0.397 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 441.484617][ T8427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 441.484628][ T8427] Call Trace:
[ 441.484635][ T8427]
[ 441.484643][ T8427] dump_stack_lvl+0xe8/0x150
[ 441.484672][ T8427] sysfs_create_dir_ns+0x271/0x2a0
[ 441.484714][ T8427] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 441.484740][ T8427] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 441.484764][ T8427] ? rt_spin_unlock+0x160/0x200
[ 441.484790][ T8427] kobject_add_internal+0x631/0xd10
[ 441.484820][ T8427] kobject_init_and_add+0x12b/0x1a0
[ 441.484847][ T8427] ? __pfx_kobject_init_and_add+0x10/0x10
[ 441.484871][ T8427] ? __raw_spin_lock_init+0x45/0x100
[ 441.484904][ T8427] ? __init_swait_queue_head+0xa9/0x150
[ 441.484932][ T8427] gfs2_sys_fs_add+0x257/0x480
[ 441.484952][ T8427] ? is_dynamic_key+0x1ac/0x1c0
[ 441.484970][ T8427] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 441.485000][ T8427] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 441.485033][ T8427] gfs2_fill_super+0x141c/0x2220
[ 441.485068][ T8427] ? __pfx_gfs2_fill_super+0x10/0x10
[ 441.485084][ T8427] ? rt_spin_unlock+0x14f/0x200
[ 441.485109][ T8427] ? sb_set_blocksize+0x11b/0x210
[ 441.485130][ T8427] ? setup_bdev_super+0x4c1/0x5b0
[ 441.485159][ T8427] get_tree_bdev_flags+0x431/0x4f0
[ 441.485185][ T8427] ? __pfx_gfs2_fill_super+0x10/0x10
[ 441.485204][ T8427] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 441.485228][ T8427] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 441.485263][ T8427] gfs2_get_tree+0x51/0x1e0
[ 441.485293][ T8427] vfs_get_tree+0x92/0x2a0
[ 441.485321][ T8427] do_new_mount+0x341/0xd30
[ 441.485341][ T8427] ? apparmor_capable+0x126/0x170
[ 441.485367][ T8427] ? __pfx_do_new_mount+0x10/0x10
[ 441.485389][ T8427] ? ns_capable+0x89/0xe0
[ 441.485418][ T8427] ? user_path_at+0xd4/0x160
[ 441.485445][ T8427] ? user_path_at+0xd4/0x160
2026/05/07 22:14:08 executed programs: 393
[ 441.485470][ T8427] __se_sys_mount+0x31d/0x420
[ 441.485497][ T8427] ? __pfx___se_sys_mount+0x10/0x10
[ 441.485525][ T8427] ? __x64_sys_mount+0x20/0xc0
[ 441.485545][ T8427] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 441.485566][ T8427] do_syscall_64+0x15f/0xf80
[ 441.485586][ T8427] ? trace_irq_disable+0x3b/0x140
[ 441.485612][ T8427] ? clear_bhb_loop+0x40/0x90
[ 441.485634][ T8427] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 441.485653][ T8427] RIP: 0033:0x7fea951fc18a
[ 441.485671][ T8427] 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
[ 441.485687][ T8427] RSP: 002b:00007fea9485de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 441.485708][ T8427] RAX: ffffffffffffffda RBX: 00007fea9485dee0 RCX: 00007fea951fc18a
[ 441.485722][ T8427] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fea9485dea0
[ 441.485735][ T8427] RBP: 00002000000124c0 R08: 00007fea9485dee0 R09: 0000000000000000
[ 441.485748][ T8427] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 441.485760][ T8427] R13: 00007fea9485dea0 R14: 0000000000012588 R15: 0000200000000000
[ 441.485791][ T8427]
[ 441.487378][ T8427] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 441.487395][ T8427] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 441.670779][ T8434] loop2: detected capacity change from 0 to 32768
[ 441.803131][ T8434] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 441.803154][ T8434] CPU: 1 UID: 0 PID: 8434 Comm: syz.2.398 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 441.803176][ T8434] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 441.803187][ T8434] Call Trace:
[ 441.803194][ T8434]
[ 441.803202][ T8434] dump_stack_lvl+0xe8/0x150
[ 441.803231][ T8434] sysfs_create_dir_ns+0x271/0x2a0
[ 441.803254][ T8434] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 441.803281][ T8434] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 441.803307][ T8434] ? rt_spin_unlock+0x160/0x200
[ 441.803334][ T8434] kobject_add_internal+0x631/0xd10
[ 441.803366][ T8434] kobject_init_and_add+0x12b/0x1a0
[ 441.803396][ T8434] ? __pfx_kobject_init_and_add+0x10/0x10
[ 441.803422][ T8434] ? __raw_spin_lock_init+0x45/0x100
[ 441.803448][ T8434] ? __init_swait_queue_head+0xa9/0x150
[ 441.803478][ T8434] gfs2_sys_fs_add+0x257/0x480
[ 441.803501][ T8434] ? is_dynamic_key+0x1ac/0x1c0
[ 441.803520][ T8434] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 441.803551][ T8434] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 441.803584][ T8434] gfs2_fill_super+0x141c/0x2220
[ 441.803618][ T8434] ? __pfx_gfs2_fill_super+0x10/0x10
[ 441.803635][ T8434] ? rt_spin_unlock+0x14f/0x200
[ 441.803662][ T8434] ? sb_set_blocksize+0x11b/0x210
[ 441.803683][ T8434] ? setup_bdev_super+0x4c1/0x5b0
[ 441.803712][ T8434] get_tree_bdev_flags+0x431/0x4f0
[ 441.803737][ T8434] ? __pfx_gfs2_fill_super+0x10/0x10
[ 441.803755][ T8434] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 441.803779][ T8434] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 441.803813][ T8434] gfs2_get_tree+0x51/0x1e0
[ 441.803836][ T8434] vfs_get_tree+0x92/0x2a0
[ 441.803864][ T8434] do_new_mount+0x341/0xd30
[ 441.803881][ T8434] ? apparmor_capable+0x126/0x170
[ 441.803903][ T8434] ? __pfx_do_new_mount+0x10/0x10
[ 441.803921][ T8434] ? ns_capable+0x89/0xe0
[ 441.803947][ T8434] ? user_path_at+0xd4/0x160
[ 441.803975][ T8434] ? user_path_at+0xd4/0x160
[ 441.803999][ T8434] __se_sys_mount+0x31d/0x420
[ 441.804025][ T8434] ? __pfx___se_sys_mount+0x10/0x10
[ 441.804052][ T8434] ? __x64_sys_mount+0x20/0xc0
[ 441.804072][ T8434] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 441.804092][ T8434] do_syscall_64+0x15f/0xf80
[ 441.804119][ T8434] ? trace_irq_disable+0x3b/0x140
[ 441.804144][ T8434] ? clear_bhb_loop+0x40/0x90
[ 441.804166][ T8434] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 441.804184][ T8434] RIP: 0033:0x7fb6c94bc18a
[ 441.804201][ T8434] 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
[ 441.804216][ T8434] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 441.804237][ T8434] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 441.804250][ T8434] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 441.804264][ T8434] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 441.804276][ T8434] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 441.804288][ T8434] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 441.804318][ T8434]
[ 441.813122][ T8434] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 441.813143][ T8434] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 442.121718][ T8425] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 442.183156][ T6742] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 442.354058][ T6196] gfs2: fsid=syz:syz.0: fatal: filesystem consistency error - inode = 11 2339, function = gfs2_dinode_in, file = fs/gfs2/glops.c, line = 398
[ 442.354097][ T6196] gfs2: fsid=syz:syz.0: G: s:EX n:2/923 f:aqonN t:EX d:EX/0 a:0 v:0 r:2 m:20 p:1
[ 442.354125][ T6196] gfs2: fsid=syz:syz.0: H: s:EX f:H e:0 p:6196 [syz-executor] gfs2_quota_sync+0x370/0x470
[ 442.354164][ T6196] gfs2: fsid=syz:syz.0: I: n:11/2339 t:0 f:0x00 d:0x00000000 s:0 p:0
[ 442.354190][ T6196] CPU: 1 UID: 0 PID: 6196 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 442.354211][ T6196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 442.354221][ T6196] Call Trace:
[ 442.354229][ T6196]
[ 442.354237][ T6196] dump_stack_lvl+0xe8/0x150
[ 442.354263][ T6196] gfs2_withdraw+0xc3/0x1b0
[ 442.354286][ T6196] inode_go_instantiate+0xe2d/0x12a0
[ 442.354313][ T6196] ? __pfx_bit_wait+0x10/0x10
[ 442.354335][ T6196] ? __pfx_inode_go_instantiate+0x10/0x10
[ 442.354351][ T6196] ? rt_spin_unlock+0x160/0x200
[ 442.354379][ T6196] ? __pfx_wake_bit_function+0x10/0x10
[ 442.354412][ T6196] gfs2_instantiate+0x168/0x220
[ 442.354435][ T6196] gfs2_glock_wait+0x1d7/0x2a0
[ 442.354458][ T6196] do_sync+0x49a/0xcb0
[ 442.354482][ T6196] ? gfs2_quota_sync+0x370/0x470
[ 442.354515][ T6196] ? __pfx_do_sync+0x10/0x10
[ 442.354536][ T6196] ? rt_mutex_slowunlock+0x4a7/0x8b0
[ 442.354570][ T6196] ? gfs2_quota_sync+0x370/0x470
[ 442.354592][ T6196] ? rt_spin_unlock+0x14f/0x200
[ 442.354621][ T6196] ? rt_spin_unlock+0x160/0x200
[ 442.354648][ T6196] gfs2_quota_sync+0x370/0x470
[ 442.354682][ T6196] gfs2_sync_fs+0x4c/0xb0
[ 442.354706][ T6196] sync_filesystem+0xed/0x250
[ 442.354734][ T6196] generic_shutdown_super+0x77/0x2d0
[ 442.354763][ T6196] kill_block_super+0x44/0x90
[ 442.354789][ T6196] deactivate_locked_super+0xbc/0x130
[ 442.354822][ T6196] cleanup_mnt+0x437/0x4d0
[ 442.354847][ T6196] ? _raw_spin_unlock_irq+0x23/0x50
[ 442.354872][ T6196] task_work_run+0x1d9/0x270
[ 442.354897][ T6196] ? __pfx_task_work_run+0x10/0x10
[ 442.354929][ T6196] exit_to_user_mode_loop+0xf3/0x4d0
[ 442.354947][ T6196] ? rcu_is_watching+0x15/0xb0
[ 442.354971][ T6196] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 442.354992][ T6196] do_syscall_64+0x33e/0xf80
[ 442.355013][ T6196] ? trace_irq_disable+0x3b/0x140
[ 442.355038][ T6196] ? clear_bhb_loop+0x40/0x90
[ 442.355060][ T6196] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 442.355079][ T6196] RIP: 0033:0x7f0a5e2cc157
[ 442.355097][ T6196] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 442.355113][ T6196] RSP: 002b:00007ffeda269518 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 442.355133][ T6196] RAX: 0000000000000000 RBX: 00007f0a5e35f33b RCX: 00007f0a5e2cc157
[ 442.355146][ T6196] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeda2695d0
[ 442.355158][ T6196] RBP: 00007ffeda2695d0 R08: 00007ffeda26a5d0 R09: 00000000ffffffff
[ 442.355171][ T6196] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeda26a660
[ 442.355183][ T6196] R13: 00007f0a5e35f33b R14: 000000000006b1da R15: 00007ffeda26a6a0
[ 442.355215][ T6196]
[ 442.355222][ T6196] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 442.552274][ T6673] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 442.869742][ T6196] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 443.102854][ T8436] loop4: detected capacity change from 0 to 32768
[ 443.159191][ T8436] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 443.159210][ T8436] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 443.226443][ T8436] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 443.279030][ T37] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 443.279052][ T37] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 443.458313][ T37] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 179ms
[ 443.458577][ T37] gfs2: fsid=syz:syz.0: jid=0: Done
[ 443.462127][ T8436] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 443.776743][ T8436] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 443.913028][ T6195] gfs2: fsid=syz:syz.0: fatal: filesystem consistency error - inode = 11 2339, function = gfs2_dinode_in, file = fs/gfs2/glops.c, line = 398
[ 443.913063][ T6195] gfs2: fsid=syz:syz.0: G: s:EX n:2/923 f:aqonN t:EX d:EX/0 a:0 v:0 r:2 m:20 p:1
[ 443.913088][ T6195] gfs2: fsid=syz:syz.0: H: s:EX f:H e:0 p:6195 [syz-executor] gfs2_quota_sync+0x370/0x470
[ 443.913123][ T6195] gfs2: fsid=syz:syz.0: I: n:11/2339 t:0 f:0x00 d:0x00000000 s:0 p:0
[ 443.913147][ T6195] CPU: 1 UID: 0 PID: 6195 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 443.913164][ T6195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 443.913174][ T6195] Call Trace:
[ 443.913181][ T6195]
[ 443.913189][ T6195] dump_stack_lvl+0xe8/0x150
[ 443.913211][ T6195] gfs2_withdraw+0xc3/0x1b0
[ 443.913230][ T6195] inode_go_instantiate+0xe2d/0x12a0
[ 443.913253][ T6195] ? __pfx_bit_wait+0x10/0x10
[ 443.913272][ T6195] ? __pfx_inode_go_instantiate+0x10/0x10
[ 443.913286][ T6195] ? rt_spin_unlock+0x160/0x200
[ 443.913309][ T6195] ? __pfx_wake_bit_function+0x10/0x10
[ 443.913339][ T6195] gfs2_instantiate+0x168/0x220
[ 443.913359][ T6195] gfs2_glock_wait+0x1d7/0x2a0
[ 443.913379][ T6195] do_sync+0x49a/0xcb0
[ 443.913401][ T6195] ? gfs2_quota_sync+0x370/0x470
[ 443.913429][ T6195] ? __pfx_do_sync+0x10/0x10
[ 443.913447][ T6195] ? rt_mutex_slowunlock+0x4a7/0x8b0
[ 443.913477][ T6195] ? gfs2_quota_sync+0x370/0x470
[ 443.913496][ T6195] ? rt_spin_unlock+0x14f/0x200
[ 443.913520][ T6195] ? rt_spin_unlock+0x160/0x200
[ 443.913543][ T6195] gfs2_quota_sync+0x370/0x470
[ 443.913573][ T6195] gfs2_sync_fs+0x4c/0xb0
[ 443.913594][ T6195] sync_filesystem+0xed/0x250
[ 443.913618][ T6195] generic_shutdown_super+0x77/0x2d0
[ 443.913643][ T6195] kill_block_super+0x44/0x90
[ 443.913665][ T6195] deactivate_locked_super+0xbc/0x130
[ 443.913691][ T6195] cleanup_mnt+0x437/0x4d0
[ 443.913713][ T6195] ? _raw_spin_unlock_irq+0x23/0x50
[ 443.913735][ T6195] task_work_run+0x1d9/0x270
[ 443.913757][ T6195] ? __pfx_task_work_run+0x10/0x10
[ 443.913784][ T6195] exit_to_user_mode_loop+0xf3/0x4d0
[ 443.913800][ T6195] ? rcu_is_watching+0x15/0xb0
[ 443.913820][ T6195] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 443.913837][ T6195] do_syscall_64+0x33e/0xf80
[ 443.913863][ T6195] ? trace_irq_disable+0x3b/0x140
[ 443.913885][ T6195] ? clear_bhb_loop+0x40/0x90
[ 443.913905][ T6195] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 443.913921][ T6195] RIP: 0033:0x7efc53a8c157
[ 443.913938][ T6195] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 443.913952][ T6195] RSP: 002b:00007ffdc8e4c3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 443.913969][ T6195] RAX: 0000000000000000 RBX: 00007efc53b1f33b RCX: 00007efc53a8c157
[ 443.913980][ T6195] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdc8e4c490
[ 443.913990][ T6195] RBP: 00007ffdc8e4c490 R08: 00007ffdc8e4d490 R09: 00000000ffffffff
[ 443.914001][ T6195] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdc8e4d520
[ 443.914011][ T6195] R13: 00007efc53b1f33b R14: 000000000006b6cf R15: 00007ffdc8e4d560
[ 443.914037][ T6195]
[ 443.914223][ T6195] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 444.351318][ T6195] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 444.568290][ T8446] loop0: detected capacity change from 0 to 32768
[ 444.671569][ T8448] loop2: detected capacity change from 0 to 32768
[ 444.681250][ T8446] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 444.681268][ T8446] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 444.688866][ T8448] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 444.688890][ T8448] CPU: 1 UID: 0 PID: 8448 Comm: syz.2.401 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 444.688911][ T8448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 444.688922][ T8448] Call Trace:
[ 444.688929][ T8448]
[ 444.688937][ T8448] dump_stack_lvl+0xe8/0x150
[ 444.688965][ T8448] sysfs_create_dir_ns+0x271/0x2a0
[ 444.688988][ T8448] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 444.689016][ T8448] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 444.689040][ T8448] ? rt_spin_unlock+0x160/0x200
[ 444.689067][ T8448] kobject_add_internal+0x631/0xd10
[ 444.689099][ T8448] kobject_init_and_add+0x12b/0x1a0
[ 444.689129][ T8448] ? __pfx_kobject_init_and_add+0x10/0x10
[ 444.689155][ T8448] ? __raw_spin_lock_init+0x45/0x100
[ 444.689182][ T8448] ? __init_swait_queue_head+0xa9/0x150
[ 444.689211][ T8448] gfs2_sys_fs_add+0x257/0x480
[ 444.689233][ T8448] ? is_dynamic_key+0x1ac/0x1c0
[ 444.689252][ T8448] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 444.689284][ T8448] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 444.689317][ T8448] gfs2_fill_super+0x141c/0x2220
[ 444.689351][ T8448] ? __pfx_gfs2_fill_super+0x10/0x10
[ 444.689368][ T8448] ? rt_spin_unlock+0x14f/0x200
[ 444.689396][ T8448] ? sb_set_blocksize+0x11b/0x210
[ 444.689417][ T8448] ? setup_bdev_super+0x4c1/0x5b0
[ 444.689446][ T8448] get_tree_bdev_flags+0x431/0x4f0
[ 444.689471][ T8448] ? __pfx_gfs2_fill_super+0x10/0x10
[ 444.689490][ T8448] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 444.689513][ T8448] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 444.689547][ T8448] gfs2_get_tree+0x51/0x1e0
[ 444.689569][ T8448] vfs_get_tree+0x92/0x2a0
[ 444.689595][ T8448] do_new_mount+0x341/0xd30
[ 444.689614][ T8448] ? apparmor_capable+0x126/0x170
[ 444.689640][ T8448] ? __pfx_do_new_mount+0x10/0x10
[ 444.689660][ T8448] ? ns_capable+0x89/0xe0
[ 444.689688][ T8448] ? user_path_at+0xd4/0x160
[ 444.689714][ T8448] ? user_path_at+0xd4/0x160
[ 444.689739][ T8448] __se_sys_mount+0x31d/0x420
[ 444.689765][ T8448] ? __pfx___se_sys_mount+0x10/0x10
[ 444.689792][ T8448] ? __x64_sys_mount+0x20/0xc0
[ 444.689812][ T8448] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 444.689831][ T8448] do_syscall_64+0x15f/0xf80
[ 444.689857][ T8448] ? trace_irq_disable+0x3b/0x140
[ 444.689882][ T8448] ? clear_bhb_loop+0x40/0x90
[ 444.689903][ T8448] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 444.689922][ T8448] RIP: 0033:0x7fb6c94bc18a
[ 444.689941][ T8448] 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
[ 444.689956][ T8448] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 444.689976][ T8448] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 444.689989][ T8448] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 444.690001][ T8448] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 444.690014][ T8448] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 444.690026][ T8448] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 444.690055][ T8448]
[ 444.690080][ T8448] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 444.699818][ T8448] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 444.787455][ T8448] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 444.931726][ T8446] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 445.059228][ T5742] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 445.059247][ T5742] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 445.079942][ T8456] loop3: detected capacity change from 0 to 32768
[ 445.135229][ T8456] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 445.135252][ T8456] CPU: 1 UID: 0 PID: 8456 Comm: syz.3.403 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 445.135272][ T8456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 445.135283][ T8456] Call Trace:
[ 445.135290][ T8456]
[ 445.135298][ T8456] dump_stack_lvl+0xe8/0x150
[ 445.135328][ T8456] sysfs_create_dir_ns+0x271/0x2a0
[ 445.135352][ T8456] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 445.135379][ T8456] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 445.135403][ T8456] ? rt_spin_unlock+0x160/0x200
[ 445.135431][ T8456] kobject_add_internal+0x631/0xd10
[ 445.135462][ T8456] kobject_init_and_add+0x12b/0x1a0
[ 445.135491][ T8456] ? __pfx_kobject_init_and_add+0x10/0x10
[ 445.135516][ T8456] ? __raw_spin_lock_init+0x45/0x100
[ 445.135544][ T8456] ? __init_swait_queue_head+0xa9/0x150
[ 445.135573][ T8456] gfs2_sys_fs_add+0x257/0x480
[ 445.135594][ T8456] ? is_dynamic_key+0x1ac/0x1c0
[ 445.135617][ T8456] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 445.135648][ T8456] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 445.135681][ T8456] gfs2_fill_super+0x141c/0x2220
[ 445.135715][ T8456] ? __pfx_gfs2_fill_super+0x10/0x10
[ 445.135732][ T8456] ? rt_spin_unlock+0x14f/0x200
[ 445.135760][ T8456] ? sb_set_blocksize+0x11b/0x210
[ 445.135781][ T8456] ? setup_bdev_super+0x4c1/0x5b0
[ 445.135810][ T8456] get_tree_bdev_flags+0x431/0x4f0
[ 445.135841][ T8456] ? __pfx_gfs2_fill_super+0x10/0x10
[ 445.135860][ T8456] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 445.135883][ T8456] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 445.135915][ T8456] gfs2_get_tree+0x51/0x1e0
[ 445.135937][ T8456] vfs_get_tree+0x92/0x2a0
[ 445.135964][ T8456] do_new_mount+0x341/0xd30
[ 445.135983][ T8456] ? apparmor_capable+0x126/0x170
[ 445.136009][ T8456] ? __pfx_do_new_mount+0x10/0x10
[ 445.136029][ T8456] ? ns_capable+0x89/0xe0
[ 445.136057][ T8456] ? user_path_at+0xd4/0x160
[ 445.136084][ T8456] ? user_path_at+0xd4/0x160
[ 445.136108][ T8456] __se_sys_mount+0x31d/0x420
[ 445.136134][ T8456] ? __pfx___se_sys_mount+0x10/0x10
[ 445.136162][ T8456] ? __x64_sys_mount+0x20/0xc0
[ 445.136181][ T8456] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 445.136199][ T8456] do_syscall_64+0x15f/0xf80
[ 445.136218][ T8456] ? trace_irq_disable+0x3b/0x140
[ 445.136242][ T8456] ? clear_bhb_loop+0x40/0x90
[ 445.136264][ T8456] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 445.136282][ T8456] RIP: 0033:0x7f199338c18a
[ 445.136300][ T8456] 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
[ 445.136314][ T8456] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 445.136333][ T8456] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 445.136344][ T8456] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 445.136357][ T8456] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 445.136369][ T8456] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 445.136381][ T8456] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 445.136411][ T8456]
[ 445.158503][ T8456] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 445.158525][ T8456] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 445.500940][ T5742] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 441ms
[ 445.501140][ T5742] gfs2: fsid=syz:syz.0: jid=0: Done
[ 445.501192][ T8446] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 445.552452][ T8446] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 445.823178][ T6673] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 445.884262][ T6880] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 446.348161][ T8461] loop1: detected capacity change from 0 to 32768
[ 446.375455][ T8461] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 446.375475][ T8461] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 446.531629][ T8461] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 446.611639][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 446.611659][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 446.757916][ T8472] loop3: detected capacity change from 0 to 32768
[ 446.763469][ T8472] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 446.763490][ T8472] CPU: 0 UID: 0 PID: 8472 Comm: syz.3.405 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 446.763512][ T8472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 446.763524][ T8472] Call Trace:
[ 446.763531][ T8472]
[ 446.763540][ T8472] dump_stack_lvl+0xe8/0x150
[ 446.763567][ T8472] sysfs_create_dir_ns+0x271/0x2a0
[ 446.763587][ T8472] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 446.763612][ T8472] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 446.763638][ T8472] ? rt_spin_unlock+0x160/0x200
[ 446.763676][ T8472] kobject_add_internal+0x631/0xd10
[ 446.763709][ T8472] kobject_init_and_add+0x12b/0x1a0
[ 446.763739][ T8472] ? __pfx_kobject_init_and_add+0x10/0x10
[ 446.763766][ T8472] ? __raw_spin_lock_init+0x45/0x100
[ 446.763794][ T8472] ? __init_swait_queue_head+0xa9/0x150
[ 446.763824][ T8472] gfs2_sys_fs_add+0x257/0x480
[ 446.763847][ T8472] ? is_dynamic_key+0x1ac/0x1c0
[ 446.763870][ T8472] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 446.763897][ T8472] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 446.763928][ T8472] gfs2_fill_super+0x141c/0x2220
[ 446.763964][ T8472] ? __pfx_gfs2_fill_super+0x10/0x10
[ 446.763982][ T8472] ? rt_spin_unlock+0x14f/0x200
2026/05/07 22:14:13 executed programs: 401
[ 446.764011][ T8472] ? sb_set_blocksize+0x11b/0x210
[ 446.764033][ T8472] ? setup_bdev_super+0x4c1/0x5b0
[ 446.764060][ T8472] get_tree_bdev_flags+0x431/0x4f0
[ 446.764087][ T8472] ? __pfx_gfs2_fill_super+0x10/0x10
[ 446.764105][ T8472] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 446.764127][ T8472] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 446.764159][ T8472] gfs2_get_tree+0x51/0x1e0
[ 446.764196][ T8472] vfs_get_tree+0x92/0x2a0
[ 446.764223][ T8472] do_new_mount+0x341/0xd30
[ 446.764242][ T8472] ? apparmor_capable+0x126/0x170
[ 446.764269][ T8472] ? __pfx_do_new_mount+0x10/0x10
[ 446.764290][ T8472] ? ns_capable+0x89/0xe0
[ 446.764319][ T8472] ? user_path_at+0xd4/0x160
[ 446.764346][ T8472] ? user_path_at+0xd4/0x160
[ 446.764371][ T8472] __se_sys_mount+0x31d/0x420
[ 446.764398][ T8472] ? __pfx___se_sys_mount+0x10/0x10
[ 446.764426][ T8472] ? __x64_sys_mount+0x20/0xc0
[ 446.764447][ T8472] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 446.764468][ T8472] do_syscall_64+0x15f/0xf80
[ 446.764488][ T8472] ? trace_irq_disable+0x3b/0x140
[ 446.764514][ T8472] ? clear_bhb_loop+0x40/0x90
[ 446.764536][ T8472] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 446.764555][ T8472] RIP: 0033:0x7f199338c18a
[ 446.764573][ T8472] 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
[ 446.764588][ T8472] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 446.764609][ T8472] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 446.764623][ T8472] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 446.764636][ T8472] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 446.764656][ T8472] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 446.764669][ T8472] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 446.764698][ T8472]
[ 446.794347][ T8472] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 446.794369][ T8472] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 446.903522][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 291ms
[ 446.913217][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 446.917902][ T8461] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 446.982206][ T8461] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 447.088016][ T8464] loop4: detected capacity change from 0 to 32768
[ 447.175213][ T8464] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 447.175232][ T8464] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 447.274129][ T6742] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 447.384199][ T8464] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 447.391578][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 447.391598][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 447.513114][ T9] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 121ms
[ 447.616236][ T9] gfs2: fsid=syz:syz.0: jid=0: Done
[ 447.616296][ T8464] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 447.630347][ T6880] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 447.653509][ T8464] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 448.042980][ T6673] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 448.526386][ T8475] loop0: detected capacity change from 0 to 32768
[ 448.570386][ T8475] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 448.570412][ T8475] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 448.607641][ T8477] loop2: detected capacity change from 0 to 32768
[ 448.655129][ T8477] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 448.655152][ T8477] CPU: 1 UID: 0 PID: 8477 Comm: syz.2.407 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 448.655174][ T8477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 448.655185][ T8477] Call Trace:
[ 448.655192][ T8477]
[ 448.655201][ T8477] dump_stack_lvl+0xe8/0x150
[ 448.655230][ T8477] sysfs_create_dir_ns+0x271/0x2a0
[ 448.655254][ T8477] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 448.655282][ T8477] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 448.655308][ T8477] ? rt_spin_unlock+0x160/0x200
[ 448.655336][ T8477] kobject_add_internal+0x631/0xd10
[ 448.655368][ T8477] kobject_init_and_add+0x12b/0x1a0
[ 448.655407][ T8477] ? __pfx_kobject_init_and_add+0x10/0x10
[ 448.655434][ T8477] ? __raw_spin_lock_init+0x45/0x100
[ 448.655461][ T8477] ? __init_swait_queue_head+0xa9/0x150
[ 448.655491][ T8477] gfs2_sys_fs_add+0x257/0x480
[ 448.655514][ T8477] ? is_dynamic_key+0x1ac/0x1c0
[ 448.655534][ T8477] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 448.655566][ T8477] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 448.655600][ T8477] gfs2_fill_super+0x141c/0x2220
[ 448.655635][ T8477] ? __pfx_gfs2_fill_super+0x10/0x10
[ 448.655653][ T8477] ? rt_spin_unlock+0x14f/0x200
[ 448.655681][ T8477] ? sb_set_blocksize+0x11b/0x210
[ 448.655703][ T8477] ? setup_bdev_super+0x4c1/0x5b0
[ 448.655732][ T8477] get_tree_bdev_flags+0x431/0x4f0
[ 448.655758][ T8477] ? __pfx_gfs2_fill_super+0x10/0x10
[ 448.655777][ T8477] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 448.655800][ T8477] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 448.655835][ T8477] gfs2_get_tree+0x51/0x1e0
[ 448.655858][ T8477] vfs_get_tree+0x92/0x2a0
[ 448.655885][ T8477] do_new_mount+0x341/0xd30
[ 448.655905][ T8477] ? apparmor_capable+0x126/0x170
[ 448.655932][ T8477] ? __pfx_do_new_mount+0x10/0x10
[ 448.655954][ T8477] ? ns_capable+0x89/0xe0
[ 448.655982][ T8477] ? user_path_at+0xd4/0x160
[ 448.656008][ T8477] ? user_path_at+0xd4/0x160
[ 448.656030][ T8477] __se_sys_mount+0x31d/0x420
[ 448.656055][ T8477] ? __pfx___se_sys_mount+0x10/0x10
[ 448.656079][ T8477] ? __x64_sys_mount+0x20/0xc0
[ 448.656097][ T8477] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 448.656116][ T8477] do_syscall_64+0x15f/0xf80
[ 448.656136][ T8477] ? trace_irq_disable+0x3b/0x140
[ 448.656161][ T8477] ? clear_bhb_loop+0x40/0x90
[ 448.656184][ T8477] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 448.656203][ T8477] RIP: 0033:0x7fb6c94bc18a
[ 448.656221][ T8477] 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
[ 448.656238][ T8477] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 448.656258][ T8477] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 448.656273][ T8477] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 448.656286][ T8477] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 448.656298][ T8477] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 448.656311][ T8477] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 448.656341][ T8477]
[ 448.656367][ T8477] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 448.656391][ T8477] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 448.683789][ T8475] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 448.699634][ T37] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 448.699656][ T37] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 449.146760][ T8488] loop1: detected capacity change from 0 to 32768
[ 449.178487][ T8488] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 449.178511][ T8488] CPU: 1 UID: 0 PID: 8488 Comm: syz.1.409 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 449.178532][ T8488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 449.178546][ T8488] Call Trace:
[ 449.178554][ T8488]
[ 449.178563][ T8488] dump_stack_lvl+0xe8/0x150
[ 449.178592][ T8488] sysfs_create_dir_ns+0x271/0x2a0
[ 449.178616][ T8488] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 449.178643][ T8488] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 449.178669][ T8488] ? rt_spin_unlock+0x160/0x200
[ 449.178696][ T8488] kobject_add_internal+0x631/0xd10
[ 449.178730][ T8488] kobject_init_and_add+0x12b/0x1a0
[ 449.178760][ T8488] ? __pfx_kobject_init_and_add+0x10/0x10
[ 449.178786][ T8488] ? __raw_spin_lock_init+0x45/0x100
[ 449.178813][ T8488] ? __init_swait_queue_head+0xa9/0x150
[ 449.178843][ T8488] gfs2_sys_fs_add+0x257/0x480
[ 449.178866][ T8488] ? is_dynamic_key+0x1ac/0x1c0
[ 449.178885][ T8488] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 449.178916][ T8488] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 449.178950][ T8488] gfs2_fill_super+0x141c/0x2220
[ 449.178986][ T8488] ? __pfx_gfs2_fill_super+0x10/0x10
[ 449.179004][ T8488] ? rt_spin_unlock+0x14f/0x200
[ 449.179033][ T8488] ? sb_set_blocksize+0x11b/0x210
[ 449.179054][ T8488] ? setup_bdev_super+0x4c1/0x5b0
[ 449.179084][ T8488] get_tree_bdev_flags+0x431/0x4f0
[ 449.179109][ T8488] ? __pfx_gfs2_fill_super+0x10/0x10
[ 449.179129][ T8488] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 449.179152][ T8488] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 449.179186][ T8488] gfs2_get_tree+0x51/0x1e0
[ 449.179204][ T8488] vfs_get_tree+0x92/0x2a0
[ 449.179226][ T8488] do_new_mount+0x341/0xd30
[ 449.179243][ T8488] ? apparmor_capable+0x126/0x170
[ 449.179265][ T8488] ? __pfx_do_new_mount+0x10/0x10
[ 449.179284][ T8488] ? ns_capable+0x89/0xe0
[ 449.179312][ T8488] ? user_path_at+0xd4/0x160
[ 449.179338][ T8488] ? user_path_at+0xd4/0x160
[ 449.179362][ T8488] __se_sys_mount+0x31d/0x420
[ 449.179388][ T8488] ? __pfx___se_sys_mount+0x10/0x10
[ 449.179416][ T8488] ? __x64_sys_mount+0x20/0xc0
[ 449.179445][ T8488] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 449.179466][ T8488] do_syscall_64+0x15f/0xf80
[ 449.179487][ T8488] ? trace_irq_disable+0x3b/0x140
[ 449.179514][ T8488] ? clear_bhb_loop+0x40/0x90
[ 449.179536][ T8488] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 449.179554][ T8488] RIP: 0033:0x7f0a5e2cc18a
[ 449.179573][ T8488] 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
[ 449.179589][ T8488] RSP: 002b:00007f0a5d92de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 449.179609][ T8488] RAX: ffffffffffffffda RBX: 00007f0a5d92dee0 RCX: 00007f0a5e2cc18a
[ 449.179624][ T8488] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f0a5d92dea0
[ 449.179637][ T8488] RBP: 00002000000124c0 R08: 00007f0a5d92dee0 R09: 0000000000000000
[ 449.179650][ T8488] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 449.179662][ T8488] R13: 00007f0a5d92dea0 R14: 0000000000012588 R15: 0000200000000000
[ 449.179693][ T8488]
[ 449.179816][ T8488] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 449.179832][ T8488] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 449.213298][ T37] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 513ms
[ 449.213535][ T37] gfs2: fsid=syz:syz.0: jid=0: Done
[ 449.218314][ T8475] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 449.250348][ T8475] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 449.566806][ T6880] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 449.623082][ T6193] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 449.871894][ T6673] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 450.421562][ T8491] loop4: detected capacity change from 0 to 32768
[ 450.449595][ T8491] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 450.449614][ T8491] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 450.550382][ T8491] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 450.603662][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 450.603684][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 450.816132][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 212ms
[ 450.816393][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 450.820451][ T8491] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 451.140691][ T8503] loop1: detected capacity change from 0 to 32768
[ 451.167590][ T8503] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 451.167615][ T8503] CPU: 0 UID: 0 PID: 8503 Comm: syz.1.412 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 451.167636][ T8503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 451.167648][ T8503] Call Trace:
[ 451.167656][ T8503]
[ 451.167664][ T8503] dump_stack_lvl+0xe8/0x150
[ 451.167695][ T8503] sysfs_create_dir_ns+0x271/0x2a0
[ 451.167719][ T8503] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 451.167747][ T8503] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 451.167774][ T8503] ? rt_spin_unlock+0x160/0x200
[ 451.167802][ T8503] kobject_add_internal+0x631/0xd10
[ 451.167837][ T8503] kobject_init_and_add+0x12b/0x1a0
[ 451.167868][ T8503] ? __pfx_kobject_init_and_add+0x10/0x10
[ 451.167895][ T8503] ? __raw_spin_lock_init+0x45/0x100
[ 451.167920][ T8503] ? __init_swait_queue_head+0xa9/0x150
[ 451.167951][ T8503] gfs2_sys_fs_add+0x257/0x480
[ 451.167974][ T8503] ? is_dynamic_key+0x1ac/0x1c0
[ 451.167994][ T8503] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 451.168027][ T8503] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 451.168062][ T8503] gfs2_fill_super+0x141c/0x2220
[ 451.168100][ T8503] ? __pfx_gfs2_fill_super+0x10/0x10
[ 451.168117][ T8503] ? rt_spin_unlock+0x14f/0x200
[ 451.168147][ T8503] ? sb_set_blocksize+0x11b/0x210
[ 451.168175][ T8503] ? setup_bdev_super+0x4c1/0x5b0
[ 451.168205][ T8503] get_tree_bdev_flags+0x431/0x4f0
[ 451.168232][ T8503] ? __pfx_gfs2_fill_super+0x10/0x10
[ 451.168252][ T8503] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 451.168276][ T8503] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 451.168312][ T8503] gfs2_get_tree+0x51/0x1e0
[ 451.168335][ T8503] vfs_get_tree+0x92/0x2a0
[ 451.168362][ T8503] do_new_mount+0x341/0xd30
[ 451.168382][ T8503] ? apparmor_capable+0x126/0x170
[ 451.168409][ T8503] ? __pfx_do_new_mount+0x10/0x10
[ 451.168431][ T8503] ? ns_capable+0x89/0xe0
[ 451.168459][ T8503] ? user_path_at+0xd4/0x160
[ 451.168487][ T8503] ? user_path_at+0xd4/0x160
[ 451.168512][ T8503] __se_sys_mount+0x31d/0x420
[ 451.168540][ T8503] ? __pfx___se_sys_mount+0x10/0x10
[ 451.168568][ T8503] ? __x64_sys_mount+0x20/0xc0
[ 451.168590][ T8503] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 451.168610][ T8503] do_syscall_64+0x15f/0xf80
[ 451.168630][ T8503] ? trace_irq_disable+0x3b/0x140
[ 451.168656][ T8503] ? clear_bhb_loop+0x40/0x90
[ 451.168679][ T8503] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 451.168697][ T8503] RIP: 0033:0x7f0a5e2cc18a
[ 451.168717][ T8503] 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
[ 451.168732][ T8503] RSP: 002b:00007f0a5d92de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 451.168753][ T8503] RAX: ffffffffffffffda RBX: 00007f0a5d92dee0 RCX: 00007f0a5e2cc18a
[ 451.168766][ T8503] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f0a5d92dea0
[ 451.168782][ T8503] RBP: 00002000000124c0 R08: 00007f0a5d92dee0 R09: 0000000000000000
[ 451.168795][ T8503] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 451.168807][ T8503] R13: 00007f0a5d92dea0 R14: 0000000000012588 R15: 0000200000000000
[ 451.168839][ T8503]
[ 451.194327][ T8503] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 451.194350][ T8503] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 451.347242][ T8491] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 451.603344][ T6195] gfs2: fsid=syz:syz.0: fatal: filesystem consistency error - inode = 11 2339, function = gfs2_dinode_in, file = fs/gfs2/glops.c, line = 398
[ 451.603382][ T6195] gfs2: fsid=syz:syz.0: G: s:EX n:2/923 f:aqonN t:EX d:EX/0 a:0 v:0 r:2 m:20 p:1
[ 451.603410][ T6195] gfs2: fsid=syz:syz.0: H: s:EX f:H e:0 p:6195 [syz-executor] gfs2_quota_sync+0x370/0x470
[ 451.603448][ T6195] gfs2: fsid=syz:syz.0: I: n:11/2339 t:0 f:0x00 d:0x00000000 s:0 p:0
[ 451.603475][ T6195] CPU: 1 UID: 0 PID: 6195 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 451.603496][ T6195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 451.603506][ T6195] Call Trace:
[ 451.603514][ T6195]
[ 451.603523][ T6195] dump_stack_lvl+0xe8/0x150
[ 451.603549][ T6195] gfs2_withdraw+0xc3/0x1b0
[ 451.603570][ T6195] inode_go_instantiate+0xe2d/0x12a0
[ 451.603599][ T6195] ? __pfx_inode_go_instantiate+0x10/0x10
[ 451.603616][ T6195] ? rt_spin_unlock+0x160/0x200
[ 451.603653][ T6195] gfs2_instantiate+0x168/0x220
[ 451.603677][ T6195] gfs2_glock_wait+0x1d7/0x2a0
[ 451.603701][ T6195] do_sync+0x49a/0xcb0
[ 451.603741][ T6195] ? gfs2_quota_sync+0x370/0x470
[ 451.603773][ T6195] ? __pfx_do_sync+0x10/0x10
[ 451.603794][ T6195] ? rt_mutex_slowunlock+0x4a7/0x8b0
[ 451.603829][ T6195] ? gfs2_quota_sync+0x370/0x470
[ 451.603852][ T6195] ? rt_spin_unlock+0x14f/0x200
[ 451.603887][ T6195] ? rt_spin_unlock+0x160/0x200
[ 451.603912][ T6195] gfs2_quota_sync+0x370/0x470
[ 451.603943][ T6195] gfs2_sync_fs+0x4c/0xb0
[ 451.603965][ T6195] sync_filesystem+0xed/0x250
[ 451.603991][ T6195] generic_shutdown_super+0x77/0x2d0
[ 451.604017][ T6195] kill_block_super+0x44/0x90
[ 451.604043][ T6195] deactivate_locked_super+0xbc/0x130
[ 451.604066][ T6195] cleanup_mnt+0x437/0x4d0
[ 451.604089][ T6195] ? _raw_spin_unlock_irq+0x23/0x50
[ 451.604111][ T6195] task_work_run+0x1d9/0x270
[ 451.604148][ T6195] ? __pfx_task_work_run+0x10/0x10
[ 451.604180][ T6195] exit_to_user_mode_loop+0xf3/0x4d0
[ 451.604198][ T6195] ? rcu_is_watching+0x15/0xb0
[ 451.604221][ T6195] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 451.604242][ T6195] do_syscall_64+0x33e/0xf80
[ 451.604263][ T6195] ? trace_irq_disable+0x3b/0x140
[ 451.604343][ T6195] ? clear_bhb_loop+0x40/0x90
[ 451.604367][ T6195] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 451.604386][ T6195] RIP: 0033:0x7efc53a8c157
[ 451.604404][ T6195] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 451.604420][ T6195] RSP: 002b:00007ffdc8e4c3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 451.604440][ T6195] RAX: 0000000000000000 RBX: 00007efc53b1f33b RCX: 00007efc53a8c157
[ 451.604454][ T6195] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdc8e4c490
[ 451.604466][ T6195] RBP: 00007ffdc8e4c490 R08: 00007ffdc8e4d490 R09: 00000000ffffffff
[ 451.604479][ T6195] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdc8e4d520
[ 451.604491][ T6195] R13: 00007efc53b1f33b R14: 000000000006d45f R15: 00007ffdc8e4d560
[ 451.604522][ T6195]
[ 451.606601][ T6195] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 451.657471][ T8498] loop2: detected capacity change from 0 to 32768
[ 451.682172][ T8498] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 451.682196][ T8498] CPU: 1 UID: 0 PID: 8498 Comm: syz.2.411 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 451.682217][ T8498] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 451.682228][ T8498] Call Trace:
[ 451.682235][ T8498]
[ 451.682243][ T8498] dump_stack_lvl+0xe8/0x150
[ 451.682272][ T8498] sysfs_create_dir_ns+0x271/0x2a0
[ 451.682295][ T8498] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 451.682322][ T8498] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 451.682346][ T8498] ? rt_spin_unlock+0x160/0x200
[ 451.682372][ T8498] kobject_add_internal+0x631/0xd10
[ 451.682407][ T8498] kobject_init_and_add+0x12b/0x1a0
[ 451.682437][ T8498] ? __pfx_kobject_init_and_add+0x10/0x10
[ 451.682462][ T8498] ? __raw_spin_lock_init+0x45/0x100
[ 451.682488][ T8498] ? __init_swait_queue_head+0xa9/0x150
[ 451.682530][ T8498] gfs2_sys_fs_add+0x257/0x480
[ 451.682554][ T8498] ? is_dynamic_key+0x1ac/0x1c0
[ 451.682572][ T8498] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 451.682603][ T8498] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 451.682636][ T8498] gfs2_fill_super+0x141c/0x2220
[ 451.682670][ T8498] ? __pfx_gfs2_fill_super+0x10/0x10
[ 451.682687][ T8498] ? rt_spin_unlock+0x14f/0x200
[ 451.682714][ T8498] ? sb_set_blocksize+0x11b/0x210
[ 451.682735][ T8498] ? setup_bdev_super+0x4c1/0x5b0
[ 451.682763][ T8498] get_tree_bdev_flags+0x431/0x4f0
[ 451.682789][ T8498] ? __pfx_gfs2_fill_super+0x10/0x10
[ 451.682813][ T8498] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 451.682843][ T8498] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 451.682877][ T8498] gfs2_get_tree+0x51/0x1e0
[ 451.682899][ T8498] vfs_get_tree+0x92/0x2a0
[ 451.682925][ T8498] do_new_mount+0x341/0xd30
[ 451.682944][ T8498] ? apparmor_capable+0x126/0x170
[ 451.682971][ T8498] ? __pfx_do_new_mount+0x10/0x10
[ 451.682991][ T8498] ? ns_capable+0x89/0xe0
[ 451.683019][ T8498] ? user_path_at+0xd4/0x160
[ 451.683044][ T8498] ? user_path_at+0xd4/0x160
[ 451.683200][ T8498] __se_sys_mount+0x31d/0x420
[ 451.683249][ T8498] ? __pfx___se_sys_mount+0x10/0x10
[ 451.683277][ T8498] ? __x64_sys_mount+0x20/0xc0
[ 451.683298][ T8498] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 451.683319][ T8498] do_syscall_64+0x15f/0xf80
[ 451.683341][ T8498] ? trace_irq_disable+0x3b/0x140
[ 451.683366][ T8498] ? clear_bhb_loop+0x40/0x90
[ 451.683389][ T8498] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 451.683408][ T8498] RIP: 0033:0x7fb6c94bc18a
[ 451.683428][ T8498] 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
[ 451.683444][ T8498] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 451.683464][ T8498] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 451.683478][ T8498] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 451.683491][ T8498] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 451.683504][ T8498] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 451.683516][ T8498] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 451.683559][ T8498]
[ 451.699645][ T8498] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 451.699669][ T8498] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 451.802216][ T8498] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 451.949703][ T6880] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 452.136795][ T6195] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
2026/05/07 22:14:19 executed programs: 410
[ 452.688913][ T8505] loop0: detected capacity change from 0 to 32768
[ 452.722359][ T8505] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 452.722385][ T8505] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 452.792323][ T8505] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 452.810447][ T5745] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 452.810466][ T5745] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 452.929482][ T5745] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 119ms
[ 452.929731][ T5745] gfs2: fsid=syz:syz.0: jid=0: Done
[ 452.931375][ T8505] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 453.164516][ T8505] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 453.286046][ T6193] syz-executor: attempt to access beyond end of device
[ 453.286046][ T6193] loop0: rw=12289, sector=68719479080, nr_sectors = 8 limit=32768
[ 453.286081][ T6193] Buffer I/O error on dev loop0, logical block 8589934885, lost async page write
[ 453.286183][ T6193] gfs2: fsid=syz:syz.0: fatal: I/O error - block = 8589934885, function = gfs2_ail1_start_one, file = fs/gfs2/log.c, line = 116
[ 453.286208][ T6193] CPU: 1 UID: 0 PID: 6193 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 453.286230][ T6193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 453.286241][ T6193] Call Trace:
[ 453.286248][ T6193]
[ 453.286256][ T6193] dump_stack_lvl+0xe8/0x150
[ 453.286286][ T6193] gfs2_withdraw+0xc3/0x1b0
[ 453.286310][ T6193] gfs2_ail1_flush+0x990/0xfd0
[ 453.286352][ T6193] ? __pfx_gfs2_ail1_flush+0x10/0x10
[ 453.286389][ T6193] empty_ail1_list+0x1b3/0x330
[ 453.286417][ T6193] ? __pfx_empty_ail1_list+0x10/0x10
[ 453.286470][ T6193] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 453.286497][ T6193] ? rt_spin_unlock+0x14f/0x200
[ 453.286522][ T6193] ? rt_spin_unlock+0x160/0x200
[ 453.286546][ T6193] __gfs2_log_flush+0x16d1/0x1dc0
[ 453.286579][ T6193] ? __pfx___gfs2_log_flush+0x10/0x10
[ 453.286612][ T6193] gfs2_log_flush+0x34/0x50
[ 453.286634][ T6193] gfs2_kill_sb+0x5c/0x430
[ 453.286660][ T6193] deactivate_locked_super+0xbc/0x130
[ 453.286687][ T6193] cleanup_mnt+0x437/0x4d0
[ 453.286712][ T6193] ? _raw_spin_unlock_irq+0x23/0x50
[ 453.286737][ T6193] task_work_run+0x1d9/0x270
[ 453.286761][ T6193] ? __pfx_task_work_run+0x10/0x10
[ 453.286793][ T6193] exit_to_user_mode_loop+0xf3/0x4d0
[ 453.286812][ T6193] ? rcu_is_watching+0x15/0xb0
[ 453.286835][ T6193] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 453.286856][ T6193] do_syscall_64+0x33e/0xf80
[ 453.286877][ T6193] ? trace_irq_disable+0x3b/0x140
[ 453.286903][ T6193] ? clear_bhb_loop+0x40/0x90
[ 453.286926][ T6193] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 453.286944][ T6193] RIP: 0033:0x7fea951fc157
[ 453.286963][ T6193] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 453.286980][ T6193] RSP: 002b:00007ffe0183f0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 453.287008][ T6193] RAX: 0000000000000000 RBX: 00007fea9528f33b RCX: 00007fea951fc157
[ 453.287021][ T6193] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe0183f1b0
[ 453.287033][ T6193] RBP: 00007ffe0183f1b0 R08: 00007ffe018401b0 R09: 00000000ffffffff
[ 453.287046][ T6193] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe01840240
[ 453.287058][ T6193] R13: 00007fea9528f33b R14: 000000000006e901 R15: 00007ffe01840280
[ 453.287093][ T6193]
[ 453.287112][ T6193] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 453.612165][ T8515] loop1: detected capacity change from 0 to 32768
[ 453.625971][ T8515] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 453.625995][ T8515] CPU: 0 UID: 0 PID: 8515 Comm: syz.1.415 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 453.626017][ T8515] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 453.626028][ T8515] Call Trace:
[ 453.626036][ T8515]
[ 453.626044][ T8515] dump_stack_lvl+0xe8/0x150
[ 453.626073][ T8515] sysfs_create_dir_ns+0x271/0x2a0
[ 453.626095][ T8515] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 453.626121][ T8515] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 453.626146][ T8515] ? rt_spin_unlock+0x160/0x200
[ 453.626172][ T8515] kobject_add_internal+0x631/0xd10
[ 453.626203][ T8515] kobject_init_and_add+0x12b/0x1a0
[ 453.626231][ T8515] ? __pfx_kobject_init_and_add+0x10/0x10
[ 453.626253][ T8515] ? __raw_spin_lock_init+0x45/0x100
[ 453.626276][ T8515] ? __init_swait_queue_head+0xa9/0x150
[ 453.626306][ T8515] gfs2_sys_fs_add+0x257/0x480
[ 453.626329][ T8515] ? is_dynamic_key+0x1ac/0x1c0
[ 453.626348][ T8515] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 453.626380][ T8515] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 453.626415][ T8515] gfs2_fill_super+0x141c/0x2220
[ 453.626453][ T8515] ? __pfx_gfs2_fill_super+0x10/0x10
[ 453.626470][ T8515] ? rt_spin_unlock+0x14f/0x200
[ 453.626499][ T8515] ? sb_set_blocksize+0x11b/0x210
[ 453.626521][ T8515] ? setup_bdev_super+0x4c1/0x5b0
[ 453.626551][ T8515] get_tree_bdev_flags+0x431/0x4f0
[ 453.626577][ T8515] ? __pfx_gfs2_fill_super+0x10/0x10
[ 453.626596][ T8515] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 453.626619][ T8515] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 453.626655][ T8515] gfs2_get_tree+0x51/0x1e0
[ 453.626678][ T8515] vfs_get_tree+0x92/0x2a0
[ 453.626705][ T8515] do_new_mount+0x341/0xd30
[ 453.626724][ T8515] ? apparmor_capable+0x126/0x170
[ 453.626758][ T8515] ? __pfx_do_new_mount+0x10/0x10
[ 453.626780][ T8515] ? ns_capable+0x89/0xe0
[ 453.626808][ T8515] ? user_path_at+0xd4/0x160
[ 453.626832][ T8515] ? user_path_at+0xd4/0x160
[ 453.626855][ T8515] __se_sys_mount+0x31d/0x420
[ 453.626880][ T8515] ? __pfx___se_sys_mount+0x10/0x10
[ 453.626906][ T8515] ? __x64_sys_mount+0x20/0xc0
[ 453.626926][ T8515] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 453.626944][ T8515] do_syscall_64+0x15f/0xf80
[ 453.626965][ T8515] ? trace_irq_disable+0x3b/0x140
[ 453.626990][ T8515] ? clear_bhb_loop+0x40/0x90
[ 453.627013][ T8515] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 453.627031][ T8515] RIP: 0033:0x7f0a5e2cc18a
[ 453.627050][ T8515] 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
[ 453.627066][ T8515] RSP: 002b:00007f0a5d92de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 453.627087][ T8515] RAX: ffffffffffffffda RBX: 00007f0a5d92dee0 RCX: 00007f0a5e2cc18a
[ 453.627101][ T8515] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f0a5d92dea0
[ 453.627114][ T8515] RBP: 00002000000124c0 R08: 00007f0a5d92dee0 R09: 0000000000000000
[ 453.627125][ T8515] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 453.627138][ T8515] R13: 00007f0a5d92dea0 R14: 0000000000012588 R15: 0000200000000000
[ 453.627168][ T8515]
[ 453.628744][ T8515] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 453.628763][ T8515] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 453.827624][ T8511] loop3: detected capacity change from 0 to 32768
[ 453.849887][ T8511] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 453.849910][ T8511] CPU: 0 UID: 0 PID: 8511 Comm: syz.3.414 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 453.849932][ T8511] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 453.849943][ T8511] Call Trace:
[ 453.849951][ T8511]
[ 453.849959][ T8511] dump_stack_lvl+0xe8/0x150
[ 453.849987][ T8511] sysfs_create_dir_ns+0x271/0x2a0
[ 453.850010][ T8511] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 453.850037][ T8511] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 453.850063][ T8511] ? rt_spin_unlock+0x160/0x200
[ 453.850089][ T8511] kobject_add_internal+0x631/0xd10
[ 453.850121][ T8511] kobject_init_and_add+0x12b/0x1a0
[ 453.850151][ T8511] ? __pfx_kobject_init_and_add+0x10/0x10
[ 453.850175][ T8511] ? __raw_spin_lock_init+0x45/0x100
[ 453.850201][ T8511] ? __init_swait_queue_head+0xa9/0x150
[ 453.850230][ T8511] gfs2_sys_fs_add+0x257/0x480
[ 453.850252][ T8511] ? is_dynamic_key+0x1ac/0x1c0
[ 453.850271][ T8511] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 453.850301][ T8511] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 453.850334][ T8511] gfs2_fill_super+0x141c/0x2220
[ 453.850368][ T8511] ? __pfx_gfs2_fill_super+0x10/0x10
[ 453.850384][ T8511] ? rt_spin_unlock+0x14f/0x200
[ 453.850413][ T8511] ? sb_set_blocksize+0x11b/0x210
[ 453.850433][ T8511] ? setup_bdev_super+0x4c1/0x5b0
[ 453.850461][ T8511] get_tree_bdev_flags+0x431/0x4f0
[ 453.850486][ T8511] ? __pfx_gfs2_fill_super+0x10/0x10
[ 453.850505][ T8511] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 453.850527][ T8511] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 453.850559][ T8511] gfs2_get_tree+0x51/0x1e0
[ 453.850578][ T8511] vfs_get_tree+0x92/0x2a0
[ 453.850602][ T8511] do_new_mount+0x341/0xd30
[ 453.850629][ T8511] ? apparmor_capable+0x126/0x170
[ 453.850653][ T8511] ? __pfx_do_new_mount+0x10/0x10
[ 453.850673][ T8511] ? ns_capable+0x89/0xe0
[ 453.850700][ T8511] ? user_path_at+0xd4/0x160
[ 453.850727][ T8511] ? user_path_at+0xd4/0x160
[ 453.850751][ T8511] __se_sys_mount+0x31d/0x420
[ 453.850777][ T8511] ? __pfx___se_sys_mount+0x10/0x10
[ 453.850804][ T8511] ? __x64_sys_mount+0x20/0xc0
[ 453.850824][ T8511] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 453.850843][ T8511] do_syscall_64+0x15f/0xf80
[ 453.850863][ T8511] ? trace_irq_disable+0x3b/0x140
[ 453.850886][ T8511] ? clear_bhb_loop+0x40/0x90
[ 453.850903][ T8511] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 453.850913][ T8511] RIP: 0033:0x7f199338c18a
[ 453.850924][ T8511] 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
[ 453.850933][ T8511] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 453.850945][ T8511] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 453.850953][ T8511] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 453.850960][ T8511] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 453.850967][ T8511] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 453.850974][ T8511] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 453.850989][ T8511]
[ 453.851013][ T8511] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 453.851026][ T8511] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 454.367299][ T6742] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 454.567099][ T6880] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 454.861186][ T8529] loop1: detected capacity change from 0 to 32768
[ 454.901110][ T8529] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 454.901134][ T8529] CPU: 0 UID: 0 PID: 8529 Comm: syz.1.419 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 454.901155][ T8529] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 454.901164][ T8529] Call Trace:
[ 454.901172][ T8529]
[ 454.901184][ T8529] dump_stack_lvl+0xe8/0x150
[ 454.901214][ T8529] sysfs_create_dir_ns+0x271/0x2a0
[ 454.901238][ T8529] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 454.901266][ T8529] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 454.901292][ T8529] ? rt_spin_unlock+0x160/0x200
[ 454.901320][ T8529] kobject_add_internal+0x631/0xd10
[ 454.901352][ T8529] kobject_init_and_add+0x12b/0x1a0
[ 454.901382][ T8529] ? __pfx_kobject_init_and_add+0x10/0x10
[ 454.901408][ T8529] ? __raw_spin_lock_init+0x45/0x100
[ 454.901434][ T8529] ? __init_swait_queue_head+0xa9/0x150
[ 454.901461][ T8529] gfs2_sys_fs_add+0x257/0x480
[ 454.901481][ T8529] ? is_dynamic_key+0x1ac/0x1c0
[ 454.901505][ T8529] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 454.901533][ T8529] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 454.901562][ T8529] gfs2_fill_super+0x141c/0x2220
[ 454.901593][ T8529] ? __pfx_gfs2_fill_super+0x10/0x10
[ 454.901616][ T8529] ? rt_spin_unlock+0x14f/0x200
[ 454.901642][ T8529] ? sb_set_blocksize+0x11b/0x210
[ 454.901662][ T8529] ? setup_bdev_super+0x4c1/0x5b0
[ 454.901692][ T8529] get_tree_bdev_flags+0x431/0x4f0
[ 454.901718][ T8529] ? __pfx_gfs2_fill_super+0x10/0x10
[ 454.901738][ T8529] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 454.901760][ T8529] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 454.901796][ T8529] gfs2_get_tree+0x51/0x1e0
[ 454.901818][ T8529] vfs_get_tree+0x92/0x2a0
[ 454.901846][ T8529] do_new_mount+0x341/0xd30
[ 454.901862][ T8529] ? apparmor_capable+0x126/0x170
[ 454.901888][ T8529] ? __pfx_do_new_mount+0x10/0x10
[ 454.901910][ T8529] ? ns_capable+0x89/0xe0
[ 454.901938][ T8529] ? user_path_at+0xd4/0x160
[ 454.901965][ T8529] ? user_path_at+0xd4/0x160
[ 454.901990][ T8529] __se_sys_mount+0x31d/0x420
[ 454.902017][ T8529] ? __pfx___se_sys_mount+0x10/0x10
[ 454.902051][ T8529] ? __x64_sys_mount+0x20/0xc0
[ 454.902072][ T8529] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 454.902092][ T8529] do_syscall_64+0x15f/0xf80
[ 454.902112][ T8529] ? trace_irq_disable+0x3b/0x140
[ 454.902138][ T8529] ? clear_bhb_loop+0x40/0x90
[ 454.902160][ T8529] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 454.902178][ T8529] RIP: 0033:0x7f0a5e2cc18a
[ 454.902196][ T8529] 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
[ 454.902212][ T8529] RSP: 002b:00007f0a5d92de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 454.902233][ T8529] RAX: ffffffffffffffda RBX: 00007f0a5d92dee0 RCX: 00007f0a5e2cc18a
[ 454.902247][ T8529] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f0a5d92dea0
[ 454.902259][ T8529] RBP: 00002000000124c0 R08: 00007f0a5d92dee0 R09: 0000000000000000
[ 454.902272][ T8529] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 454.902284][ T8529] R13: 00007f0a5d92dea0 R14: 0000000000012588 R15: 0000200000000000
[ 454.902315][ T8529]
[ 454.902473][ T8529] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 454.902489][ T8529] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 454.919167][ T8529] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 455.421867][ T8519] loop2: detected capacity change from 0 to 32768
[ 455.447323][ T8519] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 455.447346][ T8519] CPU: 0 UID: 0 PID: 8519 Comm: syz.2.417 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 455.447368][ T8519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 455.447378][ T8519] Call Trace:
[ 455.447386][ T8519]
[ 455.447395][ T8519] dump_stack_lvl+0xe8/0x150
[ 455.447425][ T8519] sysfs_create_dir_ns+0x271/0x2a0
[ 455.447450][ T8519] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 455.447478][ T8519] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 455.447504][ T8519] ? rt_spin_unlock+0x160/0x200
[ 455.447532][ T8519] kobject_add_internal+0x631/0xd10
[ 455.447564][ T8519] kobject_init_and_add+0x12b/0x1a0
[ 455.447594][ T8519] ? __pfx_kobject_init_and_add+0x10/0x10
[ 455.447621][ T8519] ? __raw_spin_lock_init+0x45/0x100
[ 455.447648][ T8519] ? __init_swait_queue_head+0xa9/0x150
[ 455.447678][ T8519] gfs2_sys_fs_add+0x257/0x480
[ 455.447701][ T8519] ? is_dynamic_key+0x1ac/0x1c0
[ 455.447720][ T8519] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 455.447752][ T8519] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 455.447786][ T8519] gfs2_fill_super+0x141c/0x2220
[ 455.447827][ T8519] ? __pfx_gfs2_fill_super+0x10/0x10
[ 455.447846][ T8519] ? rt_spin_unlock+0x14f/0x200
[ 455.447874][ T8519] ? sb_set_blocksize+0x11b/0x210
[ 455.447896][ T8519] ? setup_bdev_super+0x4c1/0x5b0
[ 455.447925][ T8519] get_tree_bdev_flags+0x431/0x4f0
[ 455.447951][ T8519] ? __pfx_gfs2_fill_super+0x10/0x10
[ 455.447971][ T8519] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 455.447994][ T8519] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 455.448030][ T8519] gfs2_get_tree+0x51/0x1e0
[ 455.448053][ T8519] vfs_get_tree+0x92/0x2a0
[ 455.448081][ T8519] do_new_mount+0x341/0xd30
[ 455.448100][ T8519] ? apparmor_capable+0x126/0x170
[ 455.448127][ T8519] ? __pfx_do_new_mount+0x10/0x10
[ 455.448148][ T8519] ? ns_capable+0x89/0xe0
[ 455.448175][ T8519] ? user_path_at+0xd4/0x160
[ 455.448202][ T8519] ? user_path_at+0xd4/0x160
[ 455.448233][ T8519] __se_sys_mount+0x31d/0x420
[ 455.448260][ T8519] ? __pfx___se_sys_mount+0x10/0x10
[ 455.448288][ T8519] ? __x64_sys_mount+0x20/0xc0
[ 455.448309][ T8519] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 455.448330][ T8519] do_syscall_64+0x15f/0xf80
[ 455.448351][ T8519] ? trace_irq_disable+0x3b/0x140
[ 455.448377][ T8519] ? clear_bhb_loop+0x40/0x90
[ 455.448399][ T8519] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 455.448417][ T8519] RIP: 0033:0x7fb6c94bc18a
[ 455.448436][ T8519] 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
[ 455.448451][ T8519] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 455.448471][ T8519] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 455.448485][ T8519] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 455.448498][ T8519] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 455.448511][ T8519] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 455.448523][ T8519] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 455.448552][ T8519]
[ 455.456677][ T8519] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 455.456698][ T8519] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 455.879364][ T6742] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 456.297448][ T8533] loop3: detected capacity change from 0 to 32768
[ 456.323819][ T8533] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 456.323842][ T8533] CPU: 0 UID: 0 PID: 8533 Comm: syz.3.420 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 456.323867][ T8533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 456.323877][ T8533] Call Trace:
[ 456.323883][ T8533]
[ 456.323891][ T8533] dump_stack_lvl+0xe8/0x150
[ 456.323919][ T8533] sysfs_create_dir_ns+0x271/0x2a0
[ 456.323943][ T8533] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 456.323972][ T8533] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 456.323998][ T8533] ? rt_spin_unlock+0x160/0x200
[ 456.324025][ T8533] kobject_add_internal+0x631/0xd10
[ 456.324057][ T8533] kobject_init_and_add+0x12b/0x1a0
[ 456.324088][ T8533] ? __pfx_kobject_init_and_add+0x10/0x10
[ 456.324114][ T8533] ? __raw_spin_lock_init+0x45/0x100
[ 456.324141][ T8533] ? __init_swait_queue_head+0xa9/0x150
[ 456.324171][ T8533] gfs2_sys_fs_add+0x257/0x480
[ 456.324194][ T8533] ? is_dynamic_key+0x1ac/0x1c0
[ 456.324214][ T8533] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 456.324246][ T8533] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 456.324280][ T8533] gfs2_fill_super+0x141c/0x2220
[ 456.324314][ T8533] ? __pfx_gfs2_fill_super+0x10/0x10
[ 456.324332][ T8533] ? rt_spin_unlock+0x14f/0x200
[ 456.324361][ T8533] ? sb_set_blocksize+0x11b/0x210
[ 456.324382][ T8533] ? setup_bdev_super+0x4c1/0x5b0
[ 456.324419][ T8533] get_tree_bdev_flags+0x431/0x4f0
[ 456.324445][ T8533] ? __pfx_gfs2_fill_super+0x10/0x10
[ 456.324465][ T8533] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 456.324488][ T8533] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 456.324524][ T8533] gfs2_get_tree+0x51/0x1e0
[ 456.324546][ T8533] vfs_get_tree+0x92/0x2a0
[ 456.324573][ T8533] do_new_mount+0x341/0xd30
[ 456.324593][ T8533] ? apparmor_capable+0x126/0x170
[ 456.324619][ T8533] ? __pfx_do_new_mount+0x10/0x10
[ 456.324640][ T8533] ? ns_capable+0x89/0xe0
[ 456.324668][ T8533] ? user_path_at+0xd4/0x160
[ 456.324696][ T8533] ? user_path_at+0xd4/0x160
[ 456.324721][ T8533] __se_sys_mount+0x31d/0x420
[ 456.324748][ T8533] ? __pfx___se_sys_mount+0x10/0x10
[ 456.324775][ T8533] ? __x64_sys_mount+0x20/0xc0
[ 456.324794][ T8533] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 456.324813][ T8533] do_syscall_64+0x15f/0xf80
[ 456.324830][ T8533] ? trace_irq_disable+0x3b/0x140
[ 456.324854][ T8533] ? clear_bhb_loop+0x40/0x90
[ 456.324872][ T8533] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 456.324889][ T8533] RIP: 0033:0x7f199338c18a
[ 456.324906][ T8533] 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
[ 456.324922][ T8533] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 456.324941][ T8533] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 456.324955][ T8533] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 456.324968][ T8533] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 456.324980][ T8533] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 456.324992][ T8533] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 456.325023][ T8533]
[ 456.334580][ T8533] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 456.334600][ T8533] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 456.646207][ T6880] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 456.890254][ T8539] loop1: detected capacity change from 0 to 32768
[ 456.937663][ T8539] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 456.937695][ T8539] CPU: 0 UID: 0 PID: 8539 Comm: syz.1.421 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 456.937718][ T8539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 456.937729][ T8539] Call Trace:
[ 456.937736][ T8539]
[ 456.937745][ T8539] dump_stack_lvl+0xe8/0x150
[ 456.937775][ T8539] sysfs_create_dir_ns+0x271/0x2a0
[ 456.937799][ T8539] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 456.937827][ T8539] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 456.937853][ T8539] ? rt_spin_unlock+0x160/0x200
[ 456.937880][ T8539] kobject_add_internal+0x631/0xd10
[ 456.937913][ T8539] kobject_init_and_add+0x12b/0x1a0
[ 456.937944][ T8539] ? __pfx_kobject_init_and_add+0x10/0x10
[ 456.937970][ T8539] ? __raw_spin_lock_init+0x45/0x100
[ 456.937998][ T8539] ? __init_swait_queue_head+0xa9/0x150
[ 456.938026][ T8539] gfs2_sys_fs_add+0x257/0x480
[ 456.938049][ T8539] ? is_dynamic_key+0x1ac/0x1c0
[ 456.938069][ T8539] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 456.938102][ T8539] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 456.938136][ T8539] gfs2_fill_super+0x141c/0x2220
[ 456.938172][ T8539] ? __pfx_gfs2_fill_super+0x10/0x10
[ 456.938190][ T8539] ? rt_spin_unlock+0x14f/0x200
[ 456.938219][ T8539] ? sb_set_blocksize+0x11b/0x210
[ 456.938240][ T8539] ? setup_bdev_super+0x4c1/0x5b0
[ 456.938269][ T8539] get_tree_bdev_flags+0x431/0x4f0
[ 456.938295][ T8539] ? __pfx_gfs2_fill_super+0x10/0x10
[ 456.938314][ T8539] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 456.938337][ T8539] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 456.938373][ T8539] gfs2_get_tree+0x51/0x1e0
[ 456.938396][ T8539] vfs_get_tree+0x92/0x2a0
[ 456.938423][ T8539] do_new_mount+0x341/0xd30
[ 456.938443][ T8539] ? apparmor_capable+0x126/0x170
[ 456.938469][ T8539] ? __pfx_do_new_mount+0x10/0x10
[ 456.938490][ T8539] ? ns_capable+0x89/0xe0
[ 456.938519][ T8539] ? user_path_at+0xd4/0x160
[ 456.938546][ T8539] ? user_path_at+0xd4/0x160
[ 456.938571][ T8539] __se_sys_mount+0x31d/0x420
[ 456.938597][ T8539] ? __pfx___se_sys_mount+0x10/0x10
[ 456.938622][ T8539] ? __x64_sys_mount+0x20/0xc0
[ 456.938641][ T8539] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 456.938659][ T8539] do_syscall_64+0x15f/0xf80
[ 456.938684][ T8539] ? trace_irq_disable+0x3b/0x140
[ 456.938708][ T8539] ? clear_bhb_loop+0x40/0x90
[ 456.938728][ T8539] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 456.938748][ T8539] RIP: 0033:0x7f0a5e2cc18a
[ 456.938765][ T8539] 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
[ 456.938781][ T8539] RSP: 002b:00007f0a5d92de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 456.938801][ T8539] RAX: ffffffffffffffda RBX: 00007f0a5d92dee0 RCX: 00007f0a5e2cc18a
[ 456.938813][ T8539] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f0a5d92dea0
[ 456.938825][ T8539] RBP: 00002000000124c0 R08: 00007f0a5d92dee0 R09: 0000000000000000
[ 456.938836][ T8539] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 456.938848][ T8539] R13: 00007f0a5d92dea0 R14: 0000000000012588 R15: 0000200000000000
[ 456.938876][ T8539]
[ 456.938975][ T8539] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 456.938990][ T8539] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 457.484938][ T6673] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 457.849197][ T8547] loop4: detected capacity change from 0 to 32768
[ 457.866486][ T8547] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 457.866510][ T8547] CPU: 1 UID: 0 PID: 8547 Comm: syz.4.424 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 457.866531][ T8547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 457.866549][ T8547] Call Trace:
2026/05/07 22:14:24 executed programs: 419
[ 457.866557][ T8547]
[ 457.866566][ T8547] dump_stack_lvl+0xe8/0x150
[ 457.866595][ T8547] sysfs_create_dir_ns+0x271/0x2a0
[ 457.866619][ T8547] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 457.866647][ T8547] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 457.866673][ T8547] ? rt_spin_unlock+0x160/0x200
[ 457.866700][ T8547] kobject_add_internal+0x631/0xd10
[ 457.866733][ T8547] kobject_init_and_add+0x12b/0x1a0
[ 457.866763][ T8547] ? __pfx_kobject_init_and_add+0x10/0x10
[ 457.866789][ T8547] ? __raw_spin_lock_init+0x45/0x100
[ 457.866817][ T8547] ? __init_swait_queue_head+0xa9/0x150
[ 457.866847][ T8547] gfs2_sys_fs_add+0x257/0x480
[ 457.866870][ T8547] ? is_dynamic_key+0x1ac/0x1c0
[ 457.866894][ T8547] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 457.866928][ T8547] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 457.866961][ T8547] gfs2_fill_super+0x141c/0x2220
[ 457.866997][ T8547] ? __pfx_gfs2_fill_super+0x10/0x10
[ 457.867016][ T8547] ? rt_spin_unlock+0x14f/0x200
[ 457.867045][ T8547] ? sb_set_blocksize+0x11b/0x210
[ 457.867067][ T8547] ? setup_bdev_super+0x4c1/0x5b0
[ 457.867096][ T8547] get_tree_bdev_flags+0x431/0x4f0
[ 457.867122][ T8547] ? __pfx_gfs2_fill_super+0x10/0x10
[ 457.867142][ T8547] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 457.867165][ T8547] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 457.867200][ T8547] gfs2_get_tree+0x51/0x1e0
[ 457.867224][ T8547] vfs_get_tree+0x92/0x2a0
[ 457.867251][ T8547] do_new_mount+0x341/0xd30
[ 457.867277][ T8547] ? apparmor_capable+0x126/0x170
[ 457.867302][ T8547] ? __pfx_do_new_mount+0x10/0x10
[ 457.867328][ T8547] ? ns_capable+0x89/0xe0
[ 457.867356][ T8547] ? user_path_at+0xd4/0x160
[ 457.867384][ T8547] ? user_path_at+0xd4/0x160
[ 457.867409][ T8547] __se_sys_mount+0x31d/0x420
[ 457.867436][ T8547] ? __pfx___se_sys_mount+0x10/0x10
[ 457.867464][ T8547] ? __x64_sys_mount+0x20/0xc0
[ 457.867484][ T8547] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 457.867504][ T8547] do_syscall_64+0x15f/0xf80
[ 457.867525][ T8547] ? trace_irq_disable+0x3b/0x140
[ 457.867561][ T8547] ? clear_bhb_loop+0x40/0x90
[ 457.867584][ T8547] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 457.867602][ T8547] RIP: 0033:0x7efc53a8c18a
[ 457.867620][ T8547] 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
[ 457.867635][ T8547] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 457.867655][ T8547] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 457.867668][ T8547] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 457.867679][ T8547] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 457.867690][ T8547] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 457.867701][ T8547] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 457.867726][ T8547]
[ 457.869305][ T8547] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 457.869325][ T8547] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 458.140626][ T6880] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 458.169936][ T8541] loop2: detected capacity change from 0 to 32768
[ 458.203444][ T8541] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 458.203475][ T8541] CPU: 0 UID: 0 PID: 8541 Comm: syz.2.422 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 458.203497][ T8541] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 458.203509][ T8541] Call Trace:
[ 458.203516][ T8541]
[ 458.203524][ T8541] dump_stack_lvl+0xe8/0x150
[ 458.203554][ T8541] sysfs_create_dir_ns+0x271/0x2a0
[ 458.203577][ T8541] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 458.203604][ T8541] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 458.203629][ T8541] ? rt_spin_unlock+0x160/0x200
[ 458.203656][ T8541] kobject_add_internal+0x631/0xd10
[ 458.203689][ T8541] kobject_init_and_add+0x12b/0x1a0
[ 458.203719][ T8541] ? __pfx_kobject_init_and_add+0x10/0x10
[ 458.203743][ T8541] ? __raw_spin_lock_init+0x45/0x100
[ 458.203771][ T8541] ? __init_swait_queue_head+0xa9/0x150
[ 458.203799][ T8541] gfs2_sys_fs_add+0x257/0x480
[ 458.203822][ T8541] ? is_dynamic_key+0x1ac/0x1c0
[ 458.203840][ T8541] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 458.203873][ T8541] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 458.203903][ T8541] gfs2_fill_super+0x141c/0x2220
[ 458.203935][ T8541] ? __pfx_gfs2_fill_super+0x10/0x10
[ 458.203953][ T8541] ? rt_spin_unlock+0x14f/0x200
[ 458.203983][ T8541] ? sb_set_blocksize+0x11b/0x210
[ 458.204004][ T8541] ? setup_bdev_super+0x4c1/0x5b0
[ 458.204033][ T8541] get_tree_bdev_flags+0x431/0x4f0
[ 458.204059][ T8541] ? __pfx_gfs2_fill_super+0x10/0x10
[ 458.204078][ T8541] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 458.204101][ T8541] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 458.204137][ T8541] gfs2_get_tree+0x51/0x1e0
[ 458.204159][ T8541] vfs_get_tree+0x92/0x2a0
[ 458.204187][ T8541] do_new_mount+0x341/0xd30
[ 458.204206][ T8541] ? apparmor_capable+0x126/0x170
[ 458.204231][ T8541] ? __pfx_do_new_mount+0x10/0x10
[ 458.204251][ T8541] ? ns_capable+0x89/0xe0
[ 458.204279][ T8541] ? user_path_at+0xd4/0x160
[ 458.204306][ T8541] ? user_path_at+0xd4/0x160
[ 458.204328][ T8541] __se_sys_mount+0x31d/0x420
[ 458.204355][ T8541] ? __pfx___se_sys_mount+0x10/0x10
[ 458.204384][ T8541] ? __x64_sys_mount+0x20/0xc0
[ 458.204404][ T8541] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 458.204424][ T8541] do_syscall_64+0x15f/0xf80
[ 458.204444][ T8541] ? trace_irq_disable+0x3b/0x140
[ 458.204475][ T8541] ? clear_bhb_loop+0x40/0x90
[ 458.204498][ T8541] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 458.204516][ T8541] RIP: 0033:0x7fb6c94bc18a
[ 458.204534][ T8541] 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
[ 458.204549][ T8541] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 458.204569][ T8541] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 458.204583][ T8541] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 458.204596][ T8541] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 458.204608][ T8541] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 458.204620][ T8541] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 458.204651][ T8541]
[ 458.211195][ T8541] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 458.211215][ T8541] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 458.658922][ T6620] gfs2: fsid=syz:syz.0: file system withdrawn
[ 458.679455][ T6673] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 458.821547][ T6193] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 459.409415][ T8545] loop3: detected capacity change from 0 to 32768
[ 459.416264][ T8551] loop1: detected capacity change from 0 to 32768
[ 459.458997][ T8551] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 459.459017][ T8551] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 459.511767][ T8545] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 459.511791][ T8545] CPU: 0 UID: 0 PID: 8545 Comm: syz.3.423 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 459.511812][ T8545] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 459.511824][ T8545] Call Trace:
[ 459.511831][ T8545]
[ 459.511839][ T8545] dump_stack_lvl+0xe8/0x150
[ 459.511869][ T8545] sysfs_create_dir_ns+0x271/0x2a0
[ 459.511894][ T8545] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 459.511922][ T8545] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 459.511947][ T8545] ? rt_spin_unlock+0x160/0x200
[ 459.511974][ T8545] kobject_add_internal+0x631/0xd10
[ 459.512004][ T8545] kobject_init_and_add+0x12b/0x1a0
[ 459.512033][ T8545] ? __pfx_kobject_init_and_add+0x10/0x10
[ 459.512058][ T8545] ? __raw_spin_lock_init+0x45/0x100
[ 459.512085][ T8545] ? __init_swait_queue_head+0xa9/0x150
[ 459.512113][ T8545] gfs2_sys_fs_add+0x257/0x480
[ 459.512136][ T8545] ? is_dynamic_key+0x1ac/0x1c0
[ 459.512155][ T8545] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 459.512184][ T8545] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 459.512217][ T8545] gfs2_fill_super+0x141c/0x2220
[ 459.512252][ T8545] ? __pfx_gfs2_fill_super+0x10/0x10
[ 459.512270][ T8545] ? rt_spin_unlock+0x14f/0x200
[ 459.512298][ T8545] ? sb_set_blocksize+0x11b/0x210
[ 459.512317][ T8545] ? setup_bdev_super+0x4c1/0x5b0
[ 459.512353][ T8545] get_tree_bdev_flags+0x431/0x4f0
[ 459.512382][ T8545] ? __pfx_gfs2_fill_super+0x10/0x10
[ 459.512400][ T8545] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 459.512422][ T8545] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 459.512456][ T8545] gfs2_get_tree+0x51/0x1e0
[ 459.512479][ T8545] vfs_get_tree+0x92/0x2a0
[ 459.512507][ T8545] do_new_mount+0x341/0xd30
[ 459.512527][ T8545] ? apparmor_capable+0x126/0x170
[ 459.512552][ T8545] ? __pfx_do_new_mount+0x10/0x10
[ 459.512572][ T8545] ? ns_capable+0x89/0xe0
[ 459.512597][ T8545] ? user_path_at+0xd4/0x160
[ 459.512624][ T8545] ? user_path_at+0xd4/0x160
[ 459.512647][ T8545] __se_sys_mount+0x31d/0x420
[ 459.512674][ T8545] ? __pfx___se_sys_mount+0x10/0x10
[ 459.512700][ T8545] ? __x64_sys_mount+0x20/0xc0
[ 459.512721][ T8545] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 459.512741][ T8545] do_syscall_64+0x15f/0xf80
[ 459.512761][ T8545] ? trace_irq_disable+0x3b/0x140
[ 459.512787][ T8545] ? clear_bhb_loop+0x40/0x90
[ 459.512808][ T8545] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 459.512825][ T8545] RIP: 0033:0x7f199338c18a
[ 459.512843][ T8545] 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
[ 459.512858][ T8545] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 459.512878][ T8545] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 459.512892][ T8545] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 459.512905][ T8545] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 459.512918][ T8545] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 459.512930][ T8545] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 459.512961][ T8545]
[ 459.513004][ T8545] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 459.513020][ T8545] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 459.526247][ T8551] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 459.564138][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 459.564159][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 459.937664][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 373ms
[ 459.937911][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 459.941353][ T8551] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 460.037344][ T6880] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 460.387351][ T8551] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 460.516234][ T6196] gfs2: fsid=syz:syz.0: fatal: filesystem consistency error - inode = 11 2339, function = gfs2_dinode_in, file = fs/gfs2/glops.c, line = 398
[ 460.516272][ T6196] gfs2: fsid=syz:syz.0: G: s:EX n:2/923 f:aqonN t:EX d:EX/0 a:0 v:0 r:2 m:20 p:1
[ 460.516300][ T6196] gfs2: fsid=syz:syz.0: H: s:EX f:H e:0 p:6196 [syz-executor] gfs2_quota_sync+0x370/0x470
[ 460.516340][ T6196] gfs2: fsid=syz:syz.0: I: n:11/2339 t:0 f:0x00 d:0x00000000 s:0 p:0
[ 460.516368][ T6196] CPU: 1 UID: 0 PID: 6196 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 460.516388][ T6196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 460.516399][ T6196] Call Trace:
[ 460.516406][ T6196]
[ 460.516415][ T6196] dump_stack_lvl+0xe8/0x150
[ 460.516440][ T6196] gfs2_withdraw+0xc3/0x1b0
[ 460.516463][ T6196] inode_go_instantiate+0xe2d/0x12a0
[ 460.516490][ T6196] ? __pfx_bit_wait+0x10/0x10
[ 460.516512][ T6196] ? __pfx_inode_go_instantiate+0x10/0x10
[ 460.516529][ T6196] ? rt_spin_unlock+0x160/0x200
[ 460.516557][ T6196] ? __pfx_wake_bit_function+0x10/0x10
[ 460.516591][ T6196] gfs2_instantiate+0x168/0x220
[ 460.516615][ T6196] gfs2_glock_wait+0x1d7/0x2a0
[ 460.516639][ T6196] do_sync+0x49a/0xcb0
[ 460.516663][ T6196] ? gfs2_quota_sync+0x370/0x470
[ 460.516696][ T6196] ? __pfx_do_sync+0x10/0x10
[ 460.516717][ T6196] ? rt_mutex_slowunlock+0x4a7/0x8b0
[ 460.516751][ T6196] ? gfs2_quota_sync+0x370/0x470
[ 460.516773][ T6196] ? rt_spin_unlock+0x14f/0x200
[ 460.516803][ T6196] ? rt_spin_unlock+0x160/0x200
[ 460.516830][ T6196] gfs2_quota_sync+0x370/0x470
[ 460.516861][ T6196] gfs2_sync_fs+0x4c/0xb0
[ 460.516883][ T6196] sync_filesystem+0xed/0x250
[ 460.516911][ T6196] generic_shutdown_super+0x77/0x2d0
[ 460.516938][ T6196] kill_block_super+0x44/0x90
[ 460.516962][ T6196] deactivate_locked_super+0xbc/0x130
[ 460.516987][ T6196] cleanup_mnt+0x437/0x4d0
[ 460.517019][ T6196] ? _raw_spin_unlock_irq+0x23/0x50
[ 460.517043][ T6196] task_work_run+0x1d9/0x270
[ 460.517068][ T6196] ? __pfx_task_work_run+0x10/0x10
[ 460.517100][ T6196] exit_to_user_mode_loop+0xf3/0x4d0
[ 460.517118][ T6196] ? rcu_is_watching+0x15/0xb0
[ 460.517141][ T6196] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 460.517161][ T6196] do_syscall_64+0x33e/0xf80
[ 460.517181][ T6196] ? trace_irq_disable+0x3b/0x140
[ 460.517207][ T6196] ? clear_bhb_loop+0x40/0x90
[ 460.517230][ T6196] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 460.517247][ T6196] RIP: 0033:0x7f0a5e2cc157
[ 460.517265][ T6196] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 460.517280][ T6196] RSP: 002b:00007ffeda269518 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 460.517301][ T6196] RAX: 0000000000000000 RBX: 00007f0a5e35f33b RCX: 00007f0a5e2cc157
[ 460.517314][ T6196] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeda2695d0
[ 460.517326][ T6196] RBP: 00007ffeda2695d0 R08: 00007ffeda26a5d0 R09: 00000000ffffffff
[ 460.517338][ T6196] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeda26a660
[ 460.517350][ T6196] R13: 00007f0a5e35f33b R14: 000000000006f84a R15: 00007ffeda26a6a0
[ 460.517382][ T6196]
[ 460.517389][ T6196] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 460.635098][ T8555] loop4: detected capacity change from 0 to 32768
[ 460.651080][ T8559] loop2: detected capacity change from 0 to 32768
[ 460.755313][ T8559] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 460.755336][ T8559] CPU: 1 UID: 0 PID: 8559 Comm: syz.2.427 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 460.755357][ T8559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 460.755368][ T8559] Call Trace:
[ 460.755375][ T8559]
[ 460.755383][ T8559] dump_stack_lvl+0xe8/0x150
[ 460.755412][ T8559] sysfs_create_dir_ns+0x271/0x2a0
[ 460.755436][ T8559] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 460.755463][ T8559] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 460.755488][ T8559] ? rt_spin_unlock+0x160/0x200
[ 460.755515][ T8559] kobject_add_internal+0x631/0xd10
[ 460.755548][ T8559] kobject_init_and_add+0x12b/0x1a0
[ 460.755577][ T8559] ? __pfx_kobject_init_and_add+0x10/0x10
[ 460.755602][ T8559] ? __raw_spin_lock_init+0x45/0x100
[ 460.755630][ T8559] ? __init_swait_queue_head+0xa9/0x150
[ 460.755659][ T8559] gfs2_sys_fs_add+0x257/0x480
[ 460.755681][ T8559] ? is_dynamic_key+0x1ac/0x1c0
[ 460.755700][ T8559] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 460.755731][ T8559] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 460.755765][ T8559] gfs2_fill_super+0x141c/0x2220
[ 460.755798][ T8559] ? __pfx_gfs2_fill_super+0x10/0x10
[ 460.755815][ T8559] ? rt_spin_unlock+0x14f/0x200
[ 460.755843][ T8559] ? sb_set_blocksize+0x11b/0x210
[ 460.755864][ T8559] ? setup_bdev_super+0x4c1/0x5b0
[ 460.755892][ T8559] get_tree_bdev_flags+0x431/0x4f0
[ 460.755917][ T8559] ? __pfx_gfs2_fill_super+0x10/0x10
[ 460.755935][ T8559] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 460.755958][ T8559] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 460.755998][ T8559] gfs2_get_tree+0x51/0x1e0
[ 460.756020][ T8559] vfs_get_tree+0x92/0x2a0
[ 460.756047][ T8559] do_new_mount+0x341/0xd30
[ 460.756066][ T8559] ? apparmor_capable+0x126/0x170
[ 460.756092][ T8559] ? __pfx_do_new_mount+0x10/0x10
[ 460.756112][ T8559] ? ns_capable+0x89/0xe0
[ 460.756139][ T8559] ? user_path_at+0xd4/0x160
[ 460.756165][ T8559] ? user_path_at+0xd4/0x160
[ 460.756188][ T8559] __se_sys_mount+0x31d/0x420
[ 460.756214][ T8559] ? __pfx___se_sys_mount+0x10/0x10
[ 460.756241][ T8559] ? __x64_sys_mount+0x20/0xc0
[ 460.756261][ T8559] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 460.756281][ T8559] do_syscall_64+0x15f/0xf80
[ 460.756300][ T8559] ? trace_irq_disable+0x3b/0x140
[ 460.756325][ T8559] ? clear_bhb_loop+0x40/0x90
[ 460.756347][ T8559] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 460.756363][ T8559] RIP: 0033:0x7fb6c94bc18a
[ 460.756382][ T8559] 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
[ 460.756397][ T8559] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 460.756417][ T8559] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 460.756430][ T8559] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 460.756442][ T8559] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 460.756454][ T8559] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 460.756466][ T8559] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 460.756498][ T8559]
[ 460.756549][ T8559] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 460.756564][ T8559] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 460.851457][ T8555] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 460.851480][ T8555] CPU: 1 UID: 0 PID: 8555 Comm: syz.4.426 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 460.851501][ T8555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 460.851512][ T8555] Call Trace:
[ 460.851519][ T8555]
[ 460.851527][ T8555] dump_stack_lvl+0xe8/0x150
[ 460.851555][ T8555] sysfs_create_dir_ns+0x271/0x2a0
[ 460.851580][ T8555] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 460.851608][ T8555] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 460.851632][ T8555] ? rt_spin_unlock+0x160/0x200
[ 460.851658][ T8555] kobject_add_internal+0x631/0xd10
[ 460.851691][ T8555] kobject_init_and_add+0x12b/0x1a0
[ 460.851719][ T8555] ? __pfx_kobject_init_and_add+0x10/0x10
[ 460.851745][ T8555] ? __raw_spin_lock_init+0x45/0x100
[ 460.851772][ T8555] ? __init_swait_queue_head+0xa9/0x150
[ 460.851801][ T8555] gfs2_sys_fs_add+0x257/0x480
[ 460.851823][ T8555] ? is_dynamic_key+0x1ac/0x1c0
[ 460.851843][ T8555] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 460.851873][ T8555] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 460.851907][ T8555] gfs2_fill_super+0x141c/0x2220
[ 460.851940][ T8555] ? __pfx_gfs2_fill_super+0x10/0x10
[ 460.851957][ T8555] ? rt_spin_unlock+0x14f/0x200
[ 460.851996][ T8555] ? sb_set_blocksize+0x11b/0x210
[ 460.852018][ T8555] ? setup_bdev_super+0x4c1/0x5b0
[ 460.852046][ T8555] get_tree_bdev_flags+0x431/0x4f0
[ 460.852071][ T8555] ? __pfx_gfs2_fill_super+0x10/0x10
[ 460.852090][ T8555] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 460.852112][ T8555] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 460.852147][ T8555] gfs2_get_tree+0x51/0x1e0
[ 460.852169][ T8555] vfs_get_tree+0x92/0x2a0
[ 460.852195][ T8555] do_new_mount+0x341/0xd30
[ 460.852214][ T8555] ? apparmor_capable+0x126/0x170
[ 460.852240][ T8555] ? __pfx_do_new_mount+0x10/0x10
[ 460.852260][ T8555] ? ns_capable+0x89/0xe0
[ 460.852286][ T8555] ? user_path_at+0xd4/0x160
[ 460.852312][ T8555] ? user_path_at+0xd4/0x160
[ 460.852336][ T8555] __se_sys_mount+0x31d/0x420
[ 460.852362][ T8555] ? __pfx___se_sys_mount+0x10/0x10
[ 460.852389][ T8555] ? __x64_sys_mount+0x20/0xc0
[ 460.852409][ T8555] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 460.852428][ T8555] do_syscall_64+0x15f/0xf80
[ 460.852447][ T8555] ? trace_irq_disable+0x3b/0x140
[ 460.852472][ T8555] ? clear_bhb_loop+0x40/0x90
[ 460.852494][ T8555] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 460.852511][ T8555] RIP: 0033:0x7efc53a8c18a
[ 460.852528][ T8555] 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
[ 460.852543][ T8555] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 460.852562][ T8555] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 460.852575][ T8555] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 460.852588][ T8555] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 460.852600][ T8555] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 460.852612][ T8555] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 460.852641][ T8555]
[ 460.852687][ T8555] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 460.852702][ T8555] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 460.863204][ T8559] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 461.493328][ T6880] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 461.713147][ T6196] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 461.918595][ T8561] loop0: detected capacity change from 0 to 32768
[ 461.942608][ T8561] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 461.942627][ T8561] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 462.075891][ T8561] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 462.143490][ T5742] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 462.143511][ T5742] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 462.172272][ T8567] loop3: detected capacity change from 0 to 32768
[ 462.209542][ T8567] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 462.209567][ T8567] CPU: 0 UID: 0 PID: 8567 Comm: syz.3.428 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 462.209588][ T8567] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 462.209599][ T8567] Call Trace:
[ 462.209607][ T8567]
[ 462.209621][ T8567] dump_stack_lvl+0xe8/0x150
[ 462.209651][ T8567] sysfs_create_dir_ns+0x271/0x2a0
[ 462.209675][ T8567] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 462.209703][ T8567] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 462.209729][ T8567] ? rt_spin_unlock+0x160/0x200
[ 462.209757][ T8567] kobject_add_internal+0x631/0xd10
[ 462.209789][ T8567] kobject_init_and_add+0x12b/0x1a0
[ 462.209819][ T8567] ? __pfx_kobject_init_and_add+0x10/0x10
[ 462.209855][ T8567] ? __raw_spin_lock_init+0x45/0x100
[ 462.209882][ T8567] ? __init_swait_queue_head+0xa9/0x150
[ 462.209912][ T8567] gfs2_sys_fs_add+0x257/0x480
[ 462.209936][ T8567] ? is_dynamic_key+0x1ac/0x1c0
[ 462.209956][ T8567] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 462.209988][ T8567] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 462.210022][ T8567] gfs2_fill_super+0x141c/0x2220
[ 462.210058][ T8567] ? __pfx_gfs2_fill_super+0x10/0x10
[ 462.210076][ T8567] ? rt_spin_unlock+0x14f/0x200
[ 462.210104][ T8567] ? sb_set_blocksize+0x11b/0x210
[ 462.210126][ T8567] ? setup_bdev_super+0x4c1/0x5b0
[ 462.210155][ T8567] get_tree_bdev_flags+0x431/0x4f0
[ 462.210182][ T8567] ? __pfx_gfs2_fill_super+0x10/0x10
[ 462.210201][ T8567] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 462.210225][ T8567] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 462.210260][ T8567] gfs2_get_tree+0x51/0x1e0
[ 462.210283][ T8567] vfs_get_tree+0x92/0x2a0
[ 462.210311][ T8567] do_new_mount+0x341/0xd30
[ 462.210331][ T8567] ? apparmor_capable+0x126/0x170
[ 462.210357][ T8567] ? __pfx_do_new_mount+0x10/0x10
[ 462.210379][ T8567] ? ns_capable+0x89/0xe0
[ 462.210407][ T8567] ? user_path_at+0xd4/0x160
[ 462.210434][ T8567] ? user_path_at+0xd4/0x160
[ 462.210455][ T8567] __se_sys_mount+0x31d/0x420
[ 462.210480][ T8567] ? __pfx___se_sys_mount+0x10/0x10
[ 462.210504][ T8567] ? __x64_sys_mount+0x20/0xc0
[ 462.210520][ T8567] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 462.210539][ T8567] do_syscall_64+0x15f/0xf80
[ 462.210557][ T8567] ? trace_irq_disable+0x3b/0x140
[ 462.210580][ T8567] ? clear_bhb_loop+0x40/0x90
[ 462.210602][ T8567] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 462.210619][ T8567] RIP: 0033:0x7f199338c18a
[ 462.210636][ T8567] 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
[ 462.210649][ T8567] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 462.210667][ T8567] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 462.210679][ T8567] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 462.210691][ T8567] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 462.210702][ T8567] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 462.210712][ T8567] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 462.210738][ T8567]
[ 462.210778][ T8567] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 462.224180][ T8567] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 462.336342][ T8567] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 462.453902][ T5742] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 310ms
[ 462.462794][ T5742] gfs2: fsid=syz:syz.0: jid=0: Done
[ 462.466296][ T8561] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 462.507715][ T8561] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 462.939293][ T6742] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
2026/05/07 22:14:29 executed programs: 426
[ 463.642407][ T8575] loop4: detected capacity change from 0 to 32768
[ 463.701890][ T8575] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 463.701909][ T8575] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 463.833413][ T8575] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 463.861015][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 463.861035][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 463.897999][ T8579] loop2: detected capacity change from 0 to 32768
[ 463.943786][ T8579] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 463.943810][ T8579] CPU: 1 UID: 0 PID: 8579 Comm: syz.2.431 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 463.943832][ T8579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 463.943842][ T8579] Call Trace:
[ 463.943849][ T8579]
[ 463.943858][ T8579] dump_stack_lvl+0xe8/0x150
[ 463.943888][ T8579] sysfs_create_dir_ns+0x271/0x2a0
[ 463.943910][ T8579] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 463.943936][ T8579] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 463.943958][ T8579] ? rt_spin_unlock+0x160/0x200
[ 463.943981][ T8579] kobject_add_internal+0x631/0xd10
[ 463.944012][ T8579] kobject_init_and_add+0x12b/0x1a0
[ 463.944040][ T8579] ? __pfx_kobject_init_and_add+0x10/0x10
[ 463.944064][ T8579] ? __raw_spin_lock_init+0x45/0x100
[ 463.944089][ T8579] ? __init_swait_queue_head+0xa9/0x150
[ 463.944117][ T8579] gfs2_sys_fs_add+0x257/0x480
[ 463.944139][ T8579] ? is_dynamic_key+0x1ac/0x1c0
[ 463.944155][ T8579] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 463.944186][ T8579] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 463.944220][ T8579] gfs2_fill_super+0x141c/0x2220
[ 463.944255][ T8579] ? __pfx_gfs2_fill_super+0x10/0x10
[ 463.944273][ T8579] ? rt_spin_unlock+0x14f/0x200
[ 463.944302][ T8579] ? sb_set_blocksize+0x11b/0x210
[ 463.944324][ T8579] ? setup_bdev_super+0x4c1/0x5b0
[ 463.944353][ T8579] get_tree_bdev_flags+0x431/0x4f0
[ 463.944378][ T8579] ? __pfx_gfs2_fill_super+0x10/0x10
[ 463.944398][ T8579] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 463.944421][ T8579] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 463.944457][ T8579] gfs2_get_tree+0x51/0x1e0
[ 463.944480][ T8579] vfs_get_tree+0x92/0x2a0
[ 463.944507][ T8579] do_new_mount+0x341/0xd30
[ 463.944527][ T8579] ? apparmor_capable+0x126/0x170
[ 463.944554][ T8579] ? __pfx_do_new_mount+0x10/0x10
[ 463.944574][ T8579] ? ns_capable+0x89/0xe0
[ 463.944603][ T8579] ? user_path_at+0xd4/0x160
[ 463.944629][ T8579] ? user_path_at+0xd4/0x160
[ 463.944654][ T8579] __se_sys_mount+0x31d/0x420
[ 463.944682][ T8579] ? __pfx___se_sys_mount+0x10/0x10
[ 463.944709][ T8579] ? __x64_sys_mount+0x20/0xc0
[ 463.944730][ T8579] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 463.944759][ T8579] do_syscall_64+0x15f/0xf80
[ 463.944779][ T8579] ? trace_irq_disable+0x3b/0x140
[ 463.944805][ T8579] ? clear_bhb_loop+0x40/0x90
[ 463.944827][ T8579] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 463.944845][ T8579] RIP: 0033:0x7fb6c94bc18a
[ 463.944864][ T8579] 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
[ 463.944879][ T8579] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 463.944900][ T8579] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 463.944914][ T8579] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 463.944927][ T8579] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 463.944939][ T8579] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 463.944951][ T8579] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 463.944980][ T8579]
[ 463.949807][ T8579] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 463.949830][ T8579] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 464.327259][ T9] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 466ms
[ 464.327521][ T9] gfs2: fsid=syz:syz.0: jid=0: Done
[ 464.327694][ T8575] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 464.440266][ T8575] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 464.451819][ T6742] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 464.655615][ T6195] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 465.001062][ T8584] loop1: detected capacity change from 0 to 32768
[ 465.072142][ T8584] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 465.072156][ T8584] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 465.098661][ T8588] loop3: detected capacity change from 0 to 32768
[ 465.126073][ T8584] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 465.135785][ T8588] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 465.135807][ T8588] CPU: 1 UID: 0 PID: 8588 Comm: syz.3.433 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 465.135828][ T8588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 465.135839][ T8588] Call Trace:
[ 465.135847][ T8588]
[ 465.135855][ T8588] dump_stack_lvl+0xe8/0x150
[ 465.135884][ T8588] sysfs_create_dir_ns+0x271/0x2a0
[ 465.135919][ T8588] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 465.135947][ T8588] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 465.135972][ T8588] ? rt_spin_unlock+0x160/0x200
[ 465.135999][ T8588] kobject_add_internal+0x631/0xd10
[ 465.136031][ T8588] kobject_init_and_add+0x12b/0x1a0
[ 465.136059][ T8588] ? __pfx_kobject_init_and_add+0x10/0x10
[ 465.136083][ T8588] ? __raw_spin_lock_init+0x45/0x100
[ 465.136110][ T8588] ? __init_swait_queue_head+0xa9/0x150
[ 465.136139][ T8588] gfs2_sys_fs_add+0x257/0x480
[ 465.136161][ T8588] ? is_dynamic_key+0x1ac/0x1c0
[ 465.136181][ T8588] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 465.136214][ T8588] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 465.136252][ T8588] gfs2_fill_super+0x141c/0x2220
[ 465.136287][ T8588] ? __pfx_gfs2_fill_super+0x10/0x10
[ 465.136305][ T8588] ? rt_spin_unlock+0x14f/0x200
[ 465.136334][ T8588] ? sb_set_blocksize+0x11b/0x210
[ 465.136356][ T8588] ? setup_bdev_super+0x4c1/0x5b0
[ 465.136386][ T8588] get_tree_bdev_flags+0x431/0x4f0
[ 465.136412][ T8588] ? __pfx_gfs2_fill_super+0x10/0x10
[ 465.136430][ T8588] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 465.136453][ T8588] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 465.136488][ T8588] gfs2_get_tree+0x51/0x1e0
[ 465.136511][ T8588] vfs_get_tree+0x92/0x2a0
[ 465.136538][ T8588] do_new_mount+0x341/0xd30
[ 465.136558][ T8588] ? apparmor_capable+0x126/0x170
[ 465.136591][ T8588] ? __pfx_do_new_mount+0x10/0x10
[ 465.136611][ T8588] ? ns_capable+0x89/0xe0
[ 465.136639][ T8588] ? user_path_at+0xd4/0x160
[ 465.136666][ T8588] ? user_path_at+0xd4/0x160
[ 465.136691][ T8588] __se_sys_mount+0x31d/0x420
[ 465.136718][ T8588] ? __pfx___se_sys_mount+0x10/0x10
[ 465.136745][ T8588] ? __x64_sys_mount+0x20/0xc0
[ 465.136766][ T8588] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 465.136786][ T8588] do_syscall_64+0x15f/0xf80
[ 465.136806][ T8588] ? trace_irq_disable+0x3b/0x140
[ 465.136832][ T8588] ? clear_bhb_loop+0x40/0x90
[ 465.136854][ T8588] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 465.136868][ T8588] RIP: 0033:0x7f199338c18a
[ 465.136885][ T8588] 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
[ 465.136901][ T8588] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 465.136922][ T8588] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 465.136935][ T8588] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 465.136947][ T8588] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 465.136959][ T8588] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 465.136971][ T8588] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 465.137000][ T8588]
[ 465.144117][ T8588] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 465.144139][ T8588] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 465.146399][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 465.146416][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 465.239246][ T8588] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 465.251206][ T8586] loop0: detected capacity change from 0 to 32768
[ 465.337400][ T8586] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 465.337422][ T8586] CPU: 0 UID: 0 PID: 8586 Comm: syz.0.432 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 465.337444][ T8586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 465.337455][ T8586] Call Trace:
[ 465.337462][ T8586]
[ 465.337470][ T8586] dump_stack_lvl+0xe8/0x150
[ 465.337499][ T8586] sysfs_create_dir_ns+0x271/0x2a0
[ 465.337521][ T8586] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 465.337547][ T8586] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 465.337572][ T8586] ? rt_spin_unlock+0x160/0x200
[ 465.337598][ T8586] kobject_add_internal+0x631/0xd10
[ 465.337630][ T8586] kobject_init_and_add+0x12b/0x1a0
[ 465.337659][ T8586] ? __pfx_kobject_init_and_add+0x10/0x10
[ 465.337685][ T8586] ? __raw_spin_lock_init+0x45/0x100
[ 465.337711][ T8586] ? __init_swait_queue_head+0xa9/0x150
[ 465.337740][ T8586] gfs2_sys_fs_add+0x257/0x480
[ 465.337763][ T8586] ? is_dynamic_key+0x1ac/0x1c0
[ 465.337782][ T8586] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 465.337820][ T8586] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 465.337854][ T8586] gfs2_fill_super+0x141c/0x2220
[ 465.337891][ T8586] ? __pfx_gfs2_fill_super+0x10/0x10
[ 465.337908][ T8586] ? rt_spin_unlock+0x14f/0x200
[ 465.337953][ T8586] ? sb_set_blocksize+0x11b/0x210
[ 465.337974][ T8586] ? setup_bdev_super+0x4c1/0x5b0
[ 465.338001][ T8586] get_tree_bdev_flags+0x431/0x4f0
[ 465.338026][ T8586] ? __pfx_gfs2_fill_super+0x10/0x10
[ 465.338045][ T8586] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 465.338068][ T8586] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 465.338102][ T8586] gfs2_get_tree+0x51/0x1e0
[ 465.338125][ T8586] vfs_get_tree+0x92/0x2a0
[ 465.338151][ T8586] do_new_mount+0x341/0xd30
[ 465.338183][ T8586] ? apparmor_capable+0x126/0x170
[ 465.338208][ T8586] ? __pfx_do_new_mount+0x10/0x10
[ 465.338228][ T8586] ? ns_capable+0x89/0xe0
[ 465.338255][ T8586] ? user_path_at+0xd4/0x160
[ 465.338282][ T8586] ? user_path_at+0xd4/0x160
[ 465.338306][ T8586] __se_sys_mount+0x31d/0x420
[ 465.338332][ T8586] ? __pfx___se_sys_mount+0x10/0x10
[ 465.338359][ T8586] ? __x64_sys_mount+0x20/0xc0
[ 465.338378][ T8586] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 465.338398][ T8586] do_syscall_64+0x15f/0xf80
[ 465.338416][ T8586] ? trace_irq_disable+0x3b/0x140
[ 465.338441][ T8586] ? clear_bhb_loop+0x40/0x90
[ 465.338463][ T8586] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 465.338480][ T8586] RIP: 0033:0x7fea951fc18a
[ 465.338499][ T8586] 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
[ 465.338514][ T8586] RSP: 002b:00007fea9485de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 465.338535][ T8586] RAX: ffffffffffffffda RBX: 00007fea9485dee0 RCX: 00007fea951fc18a
[ 465.338547][ T8586] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fea9485dea0
[ 465.338559][ T8586] RBP: 00002000000124c0 R08: 00007fea9485dee0 R09: 0000000000000000
[ 465.338570][ T8586] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 465.338581][ T8586] R13: 00007fea9485dea0 R14: 0000000000012588 R15: 0000200000000000
[ 465.338608][ T8586]
[ 465.338644][ T8586] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 465.355778][ T8586] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 465.366045][ T8586] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 465.516222][ T9] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 369ms
[ 465.516574][ T9] gfs2: fsid=syz:syz.0: jid=0: Done
[ 465.516646][ T8584] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 466.218021][ T8584] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 466.329752][ T8594] loop2: detected capacity change from 0 to 32768
[ 466.348355][ T8594] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 466.348379][ T8594] CPU: 1 UID: 0 PID: 8594 Comm: syz.2.434 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 466.348400][ T8594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 466.348422][ T8594] Call Trace:
[ 466.348430][ T8594]
[ 466.348438][ T8594] dump_stack_lvl+0xe8/0x150
[ 466.348469][ T8594] sysfs_create_dir_ns+0x271/0x2a0
[ 466.348491][ T8594] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 466.348519][ T8594] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 466.348545][ T8594] ? rt_spin_unlock+0x160/0x200
[ 466.348572][ T8594] kobject_add_internal+0x631/0xd10
[ 466.348605][ T8594] kobject_init_and_add+0x12b/0x1a0
[ 466.348635][ T8594] ? __pfx_kobject_init_and_add+0x10/0x10
[ 466.348660][ T8594] ? __raw_spin_lock_init+0x45/0x100
[ 466.348687][ T8594] ? __init_swait_queue_head+0xa9/0x150
[ 466.348714][ T8594] gfs2_sys_fs_add+0x257/0x480
[ 466.348737][ T8594] ? is_dynamic_key+0x1ac/0x1c0
[ 466.348757][ T8594] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 466.348789][ T8594] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 466.348823][ T8594] gfs2_fill_super+0x141c/0x2220
[ 466.348858][ T8594] ? __pfx_gfs2_fill_super+0x10/0x10
[ 466.348876][ T8594] ? rt_spin_unlock+0x14f/0x200
[ 466.348904][ T8594] ? sb_set_blocksize+0x11b/0x210
[ 466.348924][ T8594] ? setup_bdev_super+0x4c1/0x5b0
[ 466.348948][ T8594] get_tree_bdev_flags+0x431/0x4f0
[ 466.348971][ T8594] ? __pfx_gfs2_fill_super+0x10/0x10
[ 466.348989][ T8594] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 466.349012][ T8594] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 466.349046][ T8594] gfs2_get_tree+0x51/0x1e0
[ 466.349066][ T8594] vfs_get_tree+0x92/0x2a0
[ 466.349090][ T8594] do_new_mount+0x341/0xd30
[ 466.349108][ T8594] ? apparmor_capable+0x126/0x170
[ 466.349133][ T8594] ? __pfx_do_new_mount+0x10/0x10
[ 466.349153][ T8594] ? ns_capable+0x89/0xe0
[ 466.349180][ T8594] ? user_path_at+0xd4/0x160
[ 466.349207][ T8594] ? user_path_at+0xd4/0x160
[ 466.349232][ T8594] __se_sys_mount+0x31d/0x420
[ 466.349259][ T8594] ? __pfx___se_sys_mount+0x10/0x10
[ 466.349287][ T8594] ? __x64_sys_mount+0x20/0xc0
[ 466.349307][ T8594] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 466.349327][ T8594] do_syscall_64+0x15f/0xf80
[ 466.349347][ T8594] ? trace_irq_disable+0x3b/0x140
[ 466.349373][ T8594] ? clear_bhb_loop+0x40/0x90
[ 466.349395][ T8594] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 466.349422][ T8594] RIP: 0033:0x7fb6c94bc18a
[ 466.349441][ T8594] 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
[ 466.349457][ T8594] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 466.349478][ T8594] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 466.349492][ T8594] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 466.349506][ T8594] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 466.349519][ T8594] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 466.349531][ T8594] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 466.349562][ T8594]
[ 466.349588][ T8594] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 466.349602][ T8594] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 466.405036][ T8594] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 466.716172][ T6196] gfs2: fsid=syz:syz.0: fatal: filesystem consistency error - inode = 11 2339, function = gfs2_dinode_in, file = fs/gfs2/glops.c, line = 398
[ 466.716209][ T6196] gfs2: fsid=syz:syz.0: G: s:EX n:2/923 f:aqonN t:EX d:EX/0 a:0 v:0 r:2 m:20 p:1
[ 466.716237][ T6196] gfs2: fsid=syz:syz.0: H: s:EX f:H e:0 p:6196 [syz-executor] gfs2_quota_sync+0x370/0x470
[ 466.716275][ T6196] gfs2: fsid=syz:syz.0: I: n:11/2339 t:0 f:0x00 d:0x00000000 s:0 p:0
[ 466.716299][ T6196] CPU: 0 UID: 0 PID: 6196 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 466.716319][ T6196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 466.716330][ T6196] Call Trace:
[ 466.716337][ T6196]
[ 466.716346][ T6196] dump_stack_lvl+0xe8/0x150
[ 466.716372][ T6196] gfs2_withdraw+0xc3/0x1b0
[ 466.716394][ T6196] inode_go_instantiate+0xe2d/0x12a0
[ 466.716422][ T6196] ? __pfx_inode_go_instantiate+0x10/0x10
[ 466.716440][ T6196] ? rt_spin_unlock+0x160/0x200
[ 466.716478][ T6196] gfs2_instantiate+0x168/0x220
[ 466.716502][ T6196] gfs2_glock_wait+0x1d7/0x2a0
[ 466.716526][ T6196] do_sync+0x49a/0xcb0
[ 466.716550][ T6196] ? gfs2_quota_sync+0x370/0x470
[ 466.716582][ T6196] ? __pfx_do_sync+0x10/0x10
[ 466.716604][ T6196] ? rt_mutex_slowunlock+0x4a7/0x8b0
[ 466.716639][ T6196] ? gfs2_quota_sync+0x370/0x470
[ 466.716661][ T6196] ? rt_spin_unlock+0x14f/0x200
[ 466.716699][ T6196] ? rt_spin_unlock+0x160/0x200
[ 466.716727][ T6196] gfs2_quota_sync+0x370/0x470
[ 466.716762][ T6196] gfs2_sync_fs+0x4c/0xb0
[ 466.716785][ T6196] sync_filesystem+0xed/0x250
[ 466.716814][ T6196] generic_shutdown_super+0x77/0x2d0
[ 466.716842][ T6196] kill_block_super+0x44/0x90
[ 466.716869][ T6196] deactivate_locked_super+0xbc/0x130
[ 466.716894][ T6196] cleanup_mnt+0x437/0x4d0
[ 466.716918][ T6196] ? _raw_spin_unlock_irq+0x23/0x50
[ 466.716943][ T6196] task_work_run+0x1d9/0x270
[ 466.716969][ T6196] ? __pfx_task_work_run+0x10/0x10
[ 466.717000][ T6196] exit_to_user_mode_loop+0xf3/0x4d0
[ 466.717019][ T6196] ? rcu_is_watching+0x15/0xb0
[ 466.717042][ T6196] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 466.717063][ T6196] do_syscall_64+0x33e/0xf80
[ 466.717084][ T6196] ? trace_irq_disable+0x3b/0x140
[ 466.717110][ T6196] ? clear_bhb_loop+0x40/0x90
[ 466.717133][ T6196] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 466.717151][ T6196] RIP: 0033:0x7f0a5e2cc157
[ 466.717169][ T6196] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 466.717184][ T6196] RSP: 002b:00007ffeda269518 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 466.717205][ T6196] RAX: 0000000000000000 RBX: 00007f0a5e35f33b RCX: 00007f0a5e2cc157
[ 466.717218][ T6196] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeda2695d0
[ 466.717230][ T6196] RBP: 00007ffeda2695d0 R08: 00007ffeda26a5d0 R09: 00000000ffffffff
[ 466.717242][ T6196] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeda26a660
[ 466.717253][ T6196] R13: 00007f0a5e35f33b R14: 0000000000070e3b R15: 00007ffeda26a6a0
[ 466.717284][ T6196]
[ 466.717292][ T6196] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 467.145998][ T6196] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 467.852742][ T8604] loop4: detected capacity change from 0 to 32768
[ 467.890060][ T8604] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 467.890080][ T8604] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 468.010982][ T8604] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 468.032593][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 468.032613][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 468.041639][ T8611] loop3: detected capacity change from 0 to 32768
[ 468.066270][ T8611] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 468.066293][ T8611] CPU: 0 UID: 0 PID: 8611 Comm: syz.3.437 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 468.066316][ T8611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 468.066327][ T8611] Call Trace:
[ 468.066334][ T8611]
[ 468.066343][ T8611] dump_stack_lvl+0xe8/0x150
[ 468.066381][ T8611] sysfs_create_dir_ns+0x271/0x2a0
[ 468.066405][ T8611] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 468.066434][ T8611] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 468.066460][ T8611] ? rt_spin_unlock+0x160/0x200
[ 468.066487][ T8611] kobject_add_internal+0x631/0xd10
[ 468.066521][ T8611] kobject_init_and_add+0x12b/0x1a0
[ 468.066551][ T8611] ? __pfx_kobject_init_and_add+0x10/0x10
[ 468.066581][ T8611] ? __raw_spin_lock_init+0x45/0x100
[ 468.066615][ T8611] ? __init_swait_queue_head+0xa9/0x150
[ 468.066646][ T8611] gfs2_sys_fs_add+0x257/0x480
[ 468.066669][ T8611] ? is_dynamic_key+0x1ac/0x1c0
[ 468.066689][ T8611] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 468.066721][ T8611] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 468.066756][ T8611] gfs2_fill_super+0x141c/0x2220
[ 468.066792][ T8611] ? __pfx_gfs2_fill_super+0x10/0x10
[ 468.066810][ T8611] ? rt_spin_unlock+0x14f/0x200
[ 468.066839][ T8611] ? sb_set_blocksize+0x11b/0x210
[ 468.066861][ T8611] ? setup_bdev_super+0x4c1/0x5b0
[ 468.066890][ T8611] get_tree_bdev_flags+0x431/0x4f0
2026/05/07 22:14:34 executed programs: 433
[ 468.066917][ T8611] ? __pfx_gfs2_fill_super+0x10/0x10
[ 468.066936][ T8611] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 468.066960][ T8611] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 468.066995][ T8611] gfs2_get_tree+0x51/0x1e0
[ 468.067019][ T8611] vfs_get_tree+0x92/0x2a0
[ 468.067046][ T8611] do_new_mount+0x341/0xd30
[ 468.067065][ T8611] ? apparmor_capable+0x126/0x170
[ 468.067092][ T8611] ? __pfx_do_new_mount+0x10/0x10
[ 468.067112][ T8611] ? ns_capable+0x89/0xe0
[ 468.067140][ T8611] ? user_path_at+0xd4/0x160
[ 468.067167][ T8611] ? user_path_at+0xd4/0x160
[ 468.067192][ T8611] __se_sys_mount+0x31d/0x420
[ 468.067220][ T8611] ? __pfx___se_sys_mount+0x10/0x10
[ 468.067249][ T8611] ? __x64_sys_mount+0x20/0xc0
[ 468.067269][ T8611] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 468.067290][ T8611] do_syscall_64+0x15f/0xf80
[ 468.067310][ T8611] ? trace_irq_disable+0x3b/0x140
[ 468.067336][ T8611] ? clear_bhb_loop+0x40/0x90
[ 468.067357][ T8611] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 468.067375][ T8611] RIP: 0033:0x7f199338c18a
[ 468.067394][ T8611] 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
[ 468.067409][ T8611] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 468.067429][ T8611] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 468.067443][ T8611] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 468.067455][ T8611] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 468.067468][ T8611] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 468.067479][ T8611] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 468.067510][ T8611]
[ 468.071753][ T8611] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 468.071776][ T8611] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 468.525851][ T8607] loop0: detected capacity change from 0 to 32768
[ 468.542927][ T6742] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 468.560310][ T8607] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 468.560332][ T8607] CPU: 0 UID: 0 PID: 8607 Comm: syz.0.436 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 468.560355][ T8607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 468.560365][ T8607] Call Trace:
[ 468.560373][ T8607]
[ 468.560381][ T8607] dump_stack_lvl+0xe8/0x150
[ 468.560409][ T8607] sysfs_create_dir_ns+0x271/0x2a0
[ 468.560434][ T8607] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 468.560470][ T8607] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 468.560496][ T8607] ? rt_spin_unlock+0x160/0x200
[ 468.560524][ T8607] kobject_add_internal+0x631/0xd10
[ 468.560557][ T8607] kobject_init_and_add+0x12b/0x1a0
[ 468.560587][ T8607] ? __pfx_kobject_init_and_add+0x10/0x10
[ 468.560612][ T8607] ? __raw_spin_lock_init+0x45/0x100
[ 468.560640][ T8607] ? __init_swait_queue_head+0xa9/0x150
[ 468.560670][ T8607] gfs2_sys_fs_add+0x257/0x480
[ 468.560693][ T8607] ? is_dynamic_key+0x1ac/0x1c0
[ 468.560713][ T8607] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 468.560745][ T8607] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 468.560780][ T8607] gfs2_fill_super+0x141c/0x2220
[ 468.560816][ T8607] ? __pfx_gfs2_fill_super+0x10/0x10
[ 468.560833][ T8607] ? rt_spin_unlock+0x14f/0x200
[ 468.560861][ T8607] ? sb_set_blocksize+0x11b/0x210
[ 468.560883][ T8607] ? setup_bdev_super+0x4c1/0x5b0
[ 468.560912][ T8607] get_tree_bdev_flags+0x431/0x4f0
[ 468.560938][ T8607] ? __pfx_gfs2_fill_super+0x10/0x10
[ 468.560957][ T8607] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 468.560981][ T8607] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 468.561015][ T8607] gfs2_get_tree+0x51/0x1e0
[ 468.561038][ T8607] vfs_get_tree+0x92/0x2a0
[ 468.561065][ T8607] do_new_mount+0x341/0xd30
[ 468.561085][ T8607] ? apparmor_capable+0x126/0x170
[ 468.561110][ T8607] ? __pfx_do_new_mount+0x10/0x10
[ 468.561131][ T8607] ? ns_capable+0x89/0xe0
[ 468.561158][ T8607] ? user_path_at+0xd4/0x160
[ 468.561186][ T8607] ? user_path_at+0xd4/0x160
[ 468.561212][ T8607] __se_sys_mount+0x31d/0x420
[ 468.561239][ T8607] ? __pfx___se_sys_mount+0x10/0x10
[ 468.561267][ T8607] ? __x64_sys_mount+0x20/0xc0
[ 468.561288][ T8607] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 468.561309][ T8607] do_syscall_64+0x15f/0xf80
[ 468.561330][ T8607] ? trace_irq_disable+0x3b/0x140
[ 468.561356][ T8607] ? clear_bhb_loop+0x40/0x90
[ 468.561380][ T8607] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 468.561398][ T8607] RIP: 0033:0x7fea951fc18a
[ 468.561416][ T8607] 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
[ 468.561432][ T8607] RSP: 002b:00007fea9485de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 468.561452][ T8607] RAX: ffffffffffffffda RBX: 00007fea9485dee0 RCX: 00007fea951fc18a
[ 468.561471][ T8607] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fea9485dea0
[ 468.561484][ T8607] RBP: 00002000000124c0 R08: 00007fea9485dee0 R09: 0000000000000000
[ 468.561496][ T8607] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 468.561509][ T8607] R13: 00007fea9485dea0 R14: 0000000000012588 R15: 0000200000000000
[ 468.561542][ T8607]
[ 468.580939][ T8607] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 468.580963][ T8607] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 468.739025][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 706ms
[ 468.739572][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 468.769319][ T8604] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 468.803190][ T8604] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 469.137024][ T6195] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 469.147947][ T6673] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 469.571151][ T8615] loop1: detected capacity change from 0 to 32768
[ 469.623249][ T8613] loop2: detected capacity change from 0 to 32768
[ 469.642590][ T8615] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 469.642610][ T8615] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 469.690096][ T8613] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 469.690120][ T8613] CPU: 0 UID: 0 PID: 8613 Comm: syz.2.439 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 469.690141][ T8613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 469.690153][ T8613] Call Trace:
[ 469.690160][ T8613]
[ 469.690168][ T8613] dump_stack_lvl+0xe8/0x150
[ 469.690206][ T8613] sysfs_create_dir_ns+0x271/0x2a0
[ 469.690229][ T8613] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 469.690255][ T8613] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 469.690278][ T8613] ? rt_spin_unlock+0x160/0x200
[ 469.690304][ T8613] kobject_add_internal+0x631/0xd10
[ 469.690335][ T8613] kobject_init_and_add+0x12b/0x1a0
[ 469.690363][ T8613] ? __pfx_kobject_init_and_add+0x10/0x10
[ 469.690388][ T8613] ? __raw_spin_lock_init+0x45/0x100
[ 469.690414][ T8613] ? __init_swait_queue_head+0xa9/0x150
[ 469.690443][ T8613] gfs2_sys_fs_add+0x257/0x480
[ 469.690464][ T8613] ? is_dynamic_key+0x1ac/0x1c0
[ 469.690482][ T8613] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 469.690513][ T8613] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 469.690546][ T8613] gfs2_fill_super+0x141c/0x2220
[ 469.690580][ T8613] ? __pfx_gfs2_fill_super+0x10/0x10
[ 469.690598][ T8613] ? rt_spin_unlock+0x14f/0x200
[ 469.690625][ T8613] ? sb_set_blocksize+0x11b/0x210
[ 469.690645][ T8613] ? setup_bdev_super+0x4c1/0x5b0
[ 469.690671][ T8613] get_tree_bdev_flags+0x431/0x4f0
[ 469.690695][ T8613] ? __pfx_gfs2_fill_super+0x10/0x10
[ 469.690712][ T8613] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 469.690733][ T8613] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 469.690764][ T8613] gfs2_get_tree+0x51/0x1e0
[ 469.690785][ T8613] vfs_get_tree+0x92/0x2a0
[ 469.690811][ T8613] do_new_mount+0x341/0xd30
[ 469.690831][ T8613] ? apparmor_capable+0x126/0x170
[ 469.690855][ T8613] ? __pfx_do_new_mount+0x10/0x10
[ 469.690873][ T8613] ? ns_capable+0x89/0xe0
[ 469.690900][ T8613] ? user_path_at+0xd4/0x160
[ 469.690924][ T8613] ? user_path_at+0xd4/0x160
[ 469.690949][ T8613] __se_sys_mount+0x31d/0x420
[ 469.690977][ T8613] ? __pfx___se_sys_mount+0x10/0x10
[ 469.691003][ T8613] ? __x64_sys_mount+0x20/0xc0
[ 469.691024][ T8613] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 469.691043][ T8613] do_syscall_64+0x15f/0xf80
[ 469.691064][ T8613] ? trace_irq_disable+0x3b/0x140
[ 469.691089][ T8613] ? clear_bhb_loop+0x40/0x90
[ 469.691112][ T8613] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 469.691129][ T8613] RIP: 0033:0x7fb6c94bc18a
[ 469.691148][ T8613] 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
[ 469.691164][ T8613] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 469.691191][ T8613] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 469.691205][ T8613] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 469.691218][ T8613] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 469.691230][ T8613] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 469.691243][ T8613] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 469.691273][ T8613]
[ 469.691301][ T8613] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 469.691316][ T8613] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 469.695259][ T8615] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 469.834543][ T10] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 469.834562][ T10] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 470.251478][ T8626] loop0: detected capacity change from 0 to 32768
[ 470.252358][ T10] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 417ms
[ 470.252574][ T10] gfs2: fsid=syz:syz.0: jid=0: Done
[ 470.252629][ T8615] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 470.298999][ T8615] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 470.301426][ T8626] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 470.301447][ T8626] CPU: 1 UID: 0 PID: 8626 Comm: syz.0.441 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 470.301469][ T8626] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 470.301479][ T8626] Call Trace:
[ 470.301487][ T8626]
[ 470.301495][ T8626] dump_stack_lvl+0xe8/0x150
[ 470.301526][ T8626] sysfs_create_dir_ns+0x271/0x2a0
[ 470.301550][ T8626] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 470.301578][ T8626] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 470.301604][ T8626] ? rt_spin_unlock+0x160/0x200
[ 470.301632][ T8626] kobject_add_internal+0x631/0xd10
[ 470.301666][ T8626] kobject_init_and_add+0x12b/0x1a0
[ 470.301696][ T8626] ? __pfx_kobject_init_and_add+0x10/0x10
[ 470.301722][ T8626] ? __raw_spin_lock_init+0x45/0x100
[ 470.301749][ T8626] ? __init_swait_queue_head+0xa9/0x150
[ 470.301777][ T8626] gfs2_sys_fs_add+0x257/0x480
[ 470.301798][ T8626] ? is_dynamic_key+0x1ac/0x1c0
[ 470.301816][ T8626] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 470.301844][ T8626] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 470.301876][ T8626] gfs2_fill_super+0x141c/0x2220
[ 470.301931][ T8626] ? __pfx_gfs2_fill_super+0x10/0x10
[ 470.301948][ T8626] ? rt_spin_unlock+0x14f/0x200
[ 470.301978][ T8626] ? sb_set_blocksize+0x11b/0x210
[ 470.302000][ T8626] ? setup_bdev_super+0x4c1/0x5b0
[ 470.302029][ T8626] get_tree_bdev_flags+0x431/0x4f0
[ 470.302054][ T8626] ? __pfx_gfs2_fill_super+0x10/0x10
[ 470.302073][ T8626] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 470.302097][ T8626] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 470.302133][ T8626] gfs2_get_tree+0x51/0x1e0
[ 470.302155][ T8626] vfs_get_tree+0x92/0x2a0
[ 470.302183][ T8626] do_new_mount+0x341/0xd30
[ 470.302203][ T8626] ? apparmor_capable+0x126/0x170
[ 470.302230][ T8626] ? __pfx_do_new_mount+0x10/0x10
[ 470.302251][ T8626] ? ns_capable+0x89/0xe0
[ 470.302278][ T8626] ? user_path_at+0xd4/0x160
[ 470.302305][ T8626] ? user_path_at+0xd4/0x160
[ 470.302372][ T8626] __se_sys_mount+0x31d/0x420
[ 470.302399][ T8626] ? __pfx___se_sys_mount+0x10/0x10
[ 470.302426][ T8626] ? __x64_sys_mount+0x20/0xc0
[ 470.302447][ T8626] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 470.302467][ T8626] do_syscall_64+0x15f/0xf80
[ 470.302487][ T8626] ? trace_irq_disable+0x3b/0x140
[ 470.302512][ T8626] ? clear_bhb_loop+0x40/0x90
[ 470.302535][ T8626] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 470.302553][ T8626] RIP: 0033:0x7fea951fc18a
[ 470.302572][ T8626] 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
[ 470.302588][ T8626] RSP: 002b:00007fea9485de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 470.302607][ T8626] RAX: ffffffffffffffda RBX: 00007fea9485dee0 RCX: 00007fea951fc18a
[ 470.302620][ T8626] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fea9485dea0
[ 470.302634][ T8626] RBP: 00002000000124c0 R08: 00007fea9485dee0 R09: 0000000000000000
[ 470.302647][ T8626] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 470.302659][ T8626] R13: 00007fea9485dea0 R14: 0000000000012588 R15: 0000200000000000
[ 470.302689][ T8626]
[ 470.305385][ T8626] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 470.305405][ T8626] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 470.339451][ T6673] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 470.381093][ T6742] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 471.000277][ T6880] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 472.185913][ T8640] loop0: detected capacity change from 0 to 32768
[ 472.188765][ T8632] loop2: detected capacity change from 0 to 32768
[ 472.234299][ T8632] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 472.234322][ T8632] CPU: 1 UID: 0 PID: 8632 Comm: syz.2.443 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 472.234344][ T8632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 472.234354][ T8632] Call Trace:
[ 472.234362][ T8632]
[ 472.234370][ T8632] dump_stack_lvl+0xe8/0x150
[ 472.234399][ T8632] sysfs_create_dir_ns+0x271/0x2a0
[ 472.234423][ T8632] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 472.234451][ T8632] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 472.234476][ T8632] ? rt_spin_unlock+0x160/0x200
[ 472.234504][ T8632] kobject_add_internal+0x631/0xd10
[ 472.234537][ T8632] kobject_init_and_add+0x12b/0x1a0
[ 472.234565][ T8632] ? __pfx_kobject_init_and_add+0x10/0x10
[ 472.234591][ T8632] ? __raw_spin_lock_init+0x45/0x100
[ 472.234618][ T8632] ? __init_swait_queue_head+0xa9/0x150
[ 472.234646][ T8632] gfs2_sys_fs_add+0x257/0x480
[ 472.234670][ T8632] ? is_dynamic_key+0x1ac/0x1c0
[ 472.234690][ T8632] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 472.234722][ T8632] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 472.234756][ T8632] gfs2_fill_super+0x141c/0x2220
[ 472.234791][ T8632] ? __pfx_gfs2_fill_super+0x10/0x10
[ 472.234807][ T8632] ? rt_spin_unlock+0x14f/0x200
[ 472.234836][ T8632] ? sb_set_blocksize+0x11b/0x210
[ 472.234857][ T8632] ? setup_bdev_super+0x4c1/0x5b0
[ 472.234886][ T8632] get_tree_bdev_flags+0x431/0x4f0
[ 472.234908][ T8632] ? __pfx_gfs2_fill_super+0x10/0x10
[ 472.234928][ T8632] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 472.234959][ T8632] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 472.234995][ T8632] gfs2_get_tree+0x51/0x1e0
[ 472.235017][ T8632] vfs_get_tree+0x92/0x2a0
[ 472.235044][ T8632] do_new_mount+0x341/0xd30
[ 472.235064][ T8632] ? apparmor_capable+0x126/0x170
[ 472.235090][ T8632] ? __pfx_do_new_mount+0x10/0x10
[ 472.235111][ T8632] ? ns_capable+0x89/0xe0
[ 472.235140][ T8632] ? user_path_at+0xd4/0x160
[ 472.235165][ T8632] ? user_path_at+0xd4/0x160
[ 472.235189][ T8632] __se_sys_mount+0x31d/0x420
[ 472.235216][ T8632] ? __pfx___se_sys_mount+0x10/0x10
[ 472.235244][ T8632] ? __x64_sys_mount+0x20/0xc0
[ 472.235265][ T8632] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 472.235285][ T8632] do_syscall_64+0x15f/0xf80
[ 472.235306][ T8632] ? trace_irq_disable+0x3b/0x140
[ 472.235331][ T8632] ? clear_bhb_loop+0x40/0x90
[ 472.235356][ T8632] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 472.235374][ T8632] RIP: 0033:0x7fb6c94bc18a
[ 472.235393][ T8632] 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
[ 472.235408][ T8632] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 472.235429][ T8632] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 472.235443][ T8632] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 472.235456][ T8632] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 472.235468][ T8632] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 472.235479][ T8632] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 472.235505][ T8632]
[ 472.235542][ T8632] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 472.235556][ T8632] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 472.238963][ T8640] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 472.238979][ T8640] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 472.452005][ T8640] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 472.477624][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 472.477644][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 472.647125][ T8634] loop4: detected capacity change from 0 to 32768
[ 472.730626][ T8634] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 472.730649][ T8634] CPU: 1 UID: 0 PID: 8634 Comm: syz.4.442 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 472.730670][ T8634] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 472.730680][ T8634] Call Trace:
[ 472.730688][ T8634]
[ 472.730695][ T8634] dump_stack_lvl+0xe8/0x150
[ 472.730724][ T8634] sysfs_create_dir_ns+0x271/0x2a0
[ 472.730748][ T8634] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 472.730775][ T8634] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 472.730799][ T8634] ? rt_spin_unlock+0x160/0x200
[ 472.730824][ T8634] kobject_add_internal+0x631/0xd10
[ 472.730859][ T8634] kobject_init_and_add+0x12b/0x1a0
[ 472.730882][ T8634] ? __pfx_kobject_init_and_add+0x10/0x10
[ 472.730902][ T8634] ? __raw_spin_lock_init+0x45/0x100
[ 472.730924][ T8634] ? __init_swait_queue_head+0xa9/0x150
[ 472.730947][ T8634] gfs2_sys_fs_add+0x257/0x480
[ 472.730964][ T8634] ? is_dynamic_key+0x1ac/0x1c0
[ 472.730979][ T8634] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 472.731004][ T8634] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 472.731030][ T8634] gfs2_fill_super+0x141c/0x2220
[ 472.731057][ T8634] ? __pfx_gfs2_fill_super+0x10/0x10
[ 472.731070][ T8634] ? rt_spin_unlock+0x14f/0x200
[ 472.731095][ T8634] ? sb_set_blocksize+0x11b/0x210
[ 472.731113][ T8634] ? setup_bdev_super+0x4c1/0x5b0
[ 472.731136][ T8634] get_tree_bdev_flags+0x431/0x4f0
[ 472.731156][ T8634] ? __pfx_gfs2_fill_super+0x10/0x10
[ 472.731170][ T8634] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 472.731188][ T8634] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 472.731216][ T8634] gfs2_get_tree+0x51/0x1e0
[ 472.731233][ T8634] vfs_get_tree+0x92/0x2a0
[ 472.731254][ T8634] do_new_mount+0x341/0xd30
[ 472.731269][ T8634] ? apparmor_capable+0x126/0x170
[ 472.731289][ T8634] ? __pfx_do_new_mount+0x10/0x10
[ 472.731305][ T8634] ? ns_capable+0x89/0xe0
[ 472.731327][ T8634] ? user_path_at+0xd4/0x160
[ 472.731348][ T8634] ? user_path_at+0xd4/0x160
[ 472.731367][ T8634] __se_sys_mount+0x31d/0x420
[ 472.731388][ T8634] ? __pfx___se_sys_mount+0x10/0x10
[ 472.731409][ T8634] ? __x64_sys_mount+0x20/0xc0
[ 472.731425][ T8634] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 472.731446][ T8634] do_syscall_64+0x15f/0xf80
[ 472.731462][ T8634] ? trace_irq_disable+0x3b/0x140
[ 472.731482][ T8634] ? clear_bhb_loop+0x40/0x90
[ 472.731499][ T8634] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 472.731513][ T8634] RIP: 0033:0x7efc53a8c18a
[ 472.731528][ T8634] 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
[ 472.731540][ T8634] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 472.731556][ T8634] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 472.731568][ T8634] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 472.731578][ T8634] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 472.731587][ T8634] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 472.731596][ T8634] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 472.731620][ T8634]
[ 472.731647][ T8634] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 472.731662][ T8634] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 472.733234][ T6742] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 472.847628][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 369ms
[ 472.847887][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 472.848766][ T8640] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 472.898585][ T8641] loop1: detected capacity change from 0 to 32768
[ 472.943541][ T8641] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 472.943564][ T8641] CPU: 1 UID: 0 PID: 8641 Comm: syz.1.445 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 472.943586][ T8641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 472.943596][ T8641] Call Trace:
[ 472.943604][ T8641]
[ 472.943611][ T8641] dump_stack_lvl+0xe8/0x150
[ 472.943639][ T8641] sysfs_create_dir_ns+0x271/0x2a0
[ 472.943662][ T8641] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 472.943690][ T8641] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 472.943716][ T8641] ? rt_spin_unlock+0x160/0x200
[ 472.943742][ T8641] kobject_add_internal+0x631/0xd10
[ 472.943774][ T8641] kobject_init_and_add+0x12b/0x1a0
[ 472.943803][ T8641] ? __pfx_kobject_init_and_add+0x10/0x10
[ 472.943829][ T8641] ? __raw_spin_lock_init+0x45/0x100
[ 472.943859][ T8641] ? __init_swait_queue_head+0xa9/0x150
[ 472.943885][ T8641] gfs2_sys_fs_add+0x257/0x480
[ 472.943905][ T8641] ? is_dynamic_key+0x1ac/0x1c0
[ 472.943923][ T8641] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 472.943952][ T8641] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 472.943983][ T8641] gfs2_fill_super+0x141c/0x2220
[ 472.944016][ T8641] ? __pfx_gfs2_fill_super+0x10/0x10
[ 472.944039][ T8641] ? rt_spin_unlock+0x14f/0x200
[ 472.944067][ T8641] ? sb_set_blocksize+0x11b/0x210
[ 472.944088][ T8641] ? setup_bdev_super+0x4c1/0x5b0
[ 472.944117][ T8641] get_tree_bdev_flags+0x431/0x4f0
[ 472.944142][ T8641] ? __pfx_gfs2_fill_super+0x10/0x10
[ 472.944160][ T8641] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 472.944183][ T8641] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 472.944218][ T8641] gfs2_get_tree+0x51/0x1e0
[ 472.944240][ T8641] vfs_get_tree+0x92/0x2a0
[ 472.944266][ T8641] do_new_mount+0x341/0xd30
[ 472.944285][ T8641] ? apparmor_capable+0x126/0x170
[ 472.944310][ T8641] ? __pfx_do_new_mount+0x10/0x10
[ 472.944331][ T8641] ? ns_capable+0x89/0xe0
[ 472.944357][ T8641] ? user_path_at+0xd4/0x160
[ 472.944384][ T8641] ? user_path_at+0xd4/0x160
[ 472.944408][ T8641] __se_sys_mount+0x31d/0x420
[ 472.944434][ T8641] ? __pfx___se_sys_mount+0x10/0x10
[ 472.944460][ T8641] ? __x64_sys_mount+0x20/0xc0
[ 472.944481][ T8641] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 472.944500][ T8641] do_syscall_64+0x15f/0xf80
[ 472.944520][ T8641] ? trace_irq_disable+0x3b/0x140
[ 472.944544][ T8641] ? clear_bhb_loop+0x40/0x90
[ 472.944565][ T8641] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 472.944583][ T8641] RIP: 0033:0x7f0a5e2cc18a
[ 472.944601][ T8641] 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
[ 472.944616][ T8641] RSP: 002b:00007f0a5d92de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 472.944636][ T8641] RAX: ffffffffffffffda RBX: 00007f0a5d92dee0 RCX: 00007f0a5e2cc18a
[ 472.944649][ T8641] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f0a5d92dea0
[ 472.944662][ T8641] RBP: 00002000000124c0 R08: 00007f0a5d92dee0 R09: 0000000000000000
[ 472.944674][ T8641] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 472.944686][ T8641] R13: 00007f0a5d92dea0 R14: 0000000000012588 R15: 0000200000000000
[ 472.944714][ T8641]
[ 472.964254][ T8641] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 472.964278][ T8641] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 473.045243][ T8641] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 473.634168][ T6673] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 473.792128][ T8640] gfs2: fsid=syz:syz.0: found 1 quota changes
2026/05/07 22:14:40 executed programs: 442
[ 473.981015][ T6193] gfs2: fsid=syz:syz.0: fatal: filesystem consistency error - inode = 11 2339, function = gfs2_dinode_in, file = fs/gfs2/glops.c, line = 398
[ 473.981052][ T6193] gfs2: fsid=syz:syz.0: G: s:EX n:2/923 f:aqonN t:EX d:EX/0 a:0 v:0 r:2 m:20 p:1
[ 473.981082][ T6193] gfs2: fsid=syz:syz.0: H: s:EX f:H e:0 p:6193 [syz-executor] gfs2_quota_sync+0x370/0x470
[ 473.981122][ T6193] gfs2: fsid=syz:syz.0: I: n:11/2339 t:0 f:0x00 d:0x00000000 s:0 p:0
[ 473.981149][ T6193] CPU: 0 UID: 0 PID: 6193 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 473.981169][ T6193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 473.981180][ T6193] Call Trace:
[ 473.981188][ T6193]
[ 473.981197][ T6193] dump_stack_lvl+0xe8/0x150
[ 473.981223][ T6193] gfs2_withdraw+0xc3/0x1b0
[ 473.981246][ T6193] inode_go_instantiate+0xe2d/0x12a0
[ 473.981273][ T6193] ? __pfx_bit_wait+0x10/0x10
[ 473.981296][ T6193] ? __pfx_inode_go_instantiate+0x10/0x10
[ 473.981313][ T6193] ? rt_spin_unlock+0x160/0x200
[ 473.981341][ T6193] ? __pfx_wake_bit_function+0x10/0x10
[ 473.981375][ T6193] gfs2_instantiate+0x168/0x220
[ 473.981398][ T6193] gfs2_glock_wait+0x1d7/0x2a0
[ 473.981423][ T6193] do_sync+0x49a/0xcb0
[ 473.981447][ T6193] ? gfs2_quota_sync+0x370/0x470
[ 473.981479][ T6193] ? __pfx_do_sync+0x10/0x10
[ 473.981501][ T6193] ? rt_mutex_slowunlock+0x4a7/0x8b0
[ 473.981536][ T6193] ? gfs2_quota_sync+0x370/0x470
[ 473.981578][ T6193] ? rt_spin_unlock+0x14f/0x200
[ 473.981607][ T6193] ? rt_spin_unlock+0x160/0x200
[ 473.981635][ T6193] gfs2_quota_sync+0x370/0x470
[ 473.981670][ T6193] gfs2_sync_fs+0x4c/0xb0
[ 473.981701][ T6193] sync_filesystem+0xed/0x250
[ 473.981729][ T6193] generic_shutdown_super+0x77/0x2d0
[ 473.981757][ T6193] kill_block_super+0x44/0x90
[ 473.981783][ T6193] deactivate_locked_super+0xbc/0x130
[ 473.981808][ T6193] cleanup_mnt+0x437/0x4d0
[ 473.981833][ T6193] ? _raw_spin_unlock_irq+0x23/0x50
[ 473.981857][ T6193] task_work_run+0x1d9/0x270
[ 473.981883][ T6193] ? __pfx_task_work_run+0x10/0x10
[ 473.981914][ T6193] exit_to_user_mode_loop+0xf3/0x4d0
[ 473.981932][ T6193] ? rcu_is_watching+0x15/0xb0
[ 473.981955][ T6193] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 473.981975][ T6193] do_syscall_64+0x33e/0xf80
[ 473.981996][ T6193] ? trace_irq_disable+0x3b/0x140
[ 473.982022][ T6193] ? clear_bhb_loop+0x40/0x90
[ 473.982044][ T6193] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 473.982062][ T6193] RIP: 0033:0x7fea951fc157
[ 473.982078][ T6193] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 473.982091][ T6193] RSP: 002b:00007ffe0183f0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 473.982111][ T6193] RAX: 0000000000000000 RBX: 00007fea9528f33b RCX: 00007fea951fc157
[ 473.982123][ T6193] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe0183f1b0
[ 473.982134][ T6193] RBP: 00007ffe0183f1b0 R08: 00007ffe018401b0 R09: 00000000ffffffff
[ 473.982147][ T6193] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe01840240
[ 473.982159][ T6193] R13: 00007fea9528f33b R14: 0000000000072d83 R15: 00007ffe01840280
[ 473.982190][ T6193]
[ 473.982197][ T6193] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 474.526210][ T6193] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 474.666261][ T8643] loop3: detected capacity change from 0 to 32768
[ 474.691583][ T8643] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 474.691602][ T8643] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 474.787438][ T8643] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 474.807439][ T10] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 474.807460][ T10] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 474.923071][ T10] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 115ms
[ 474.936145][ T10] gfs2: fsid=syz:syz.0: jid=0: Done
[ 474.936203][ T8643] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 474.975488][ T8643] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 475.103522][ T8649] loop2: detected capacity change from 0 to 32768
[ 475.188453][ T6880] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 475.203445][ T8657] loop4: detected capacity change from 0 to 32768
[ 475.290722][ T8657] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 475.290746][ T8657] CPU: 1 UID: 0 PID: 8657 Comm: syz.4.448 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 475.290768][ T8657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 475.290779][ T8657] Call Trace:
[ 475.290786][ T8657]
[ 475.290794][ T8657] dump_stack_lvl+0xe8/0x150
[ 475.290823][ T8657] sysfs_create_dir_ns+0x271/0x2a0
[ 475.290845][ T8657] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 475.290873][ T8657] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 475.290898][ T8657] ? rt_spin_unlock+0x160/0x200
[ 475.290926][ T8657] kobject_add_internal+0x631/0xd10
[ 475.290958][ T8657] kobject_init_and_add+0x12b/0x1a0
[ 475.290988][ T8657] ? __pfx_kobject_init_and_add+0x10/0x10
[ 475.291014][ T8657] ? __raw_spin_lock_init+0x45/0x100
[ 475.291042][ T8657] ? __init_swait_queue_head+0xa9/0x150
[ 475.291070][ T8657] gfs2_sys_fs_add+0x257/0x480
[ 475.291093][ T8657] ? is_dynamic_key+0x1ac/0x1c0
[ 475.291113][ T8657] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 475.291145][ T8657] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 475.291179][ T8657] gfs2_fill_super+0x141c/0x2220
[ 475.291214][ T8657] ? __pfx_gfs2_fill_super+0x10/0x10
[ 475.291232][ T8657] ? rt_spin_unlock+0x14f/0x200
[ 475.291259][ T8657] ? sb_set_blocksize+0x11b/0x210
[ 475.291278][ T8657] ? setup_bdev_super+0x4c1/0x5b0
[ 475.291306][ T8657] get_tree_bdev_flags+0x431/0x4f0
[ 475.291332][ T8657] ? __pfx_gfs2_fill_super+0x10/0x10
[ 475.291350][ T8657] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 475.291373][ T8657] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 475.291405][ T8657] gfs2_get_tree+0x51/0x1e0
[ 475.291425][ T8657] vfs_get_tree+0x92/0x2a0
[ 475.291450][ T8657] do_new_mount+0x341/0xd30
[ 475.291469][ T8657] ? apparmor_capable+0x126/0x170
[ 475.291494][ T8657] ? __pfx_do_new_mount+0x10/0x10
[ 475.291515][ T8657] ? ns_capable+0x89/0xe0
[ 475.291543][ T8657] ? user_path_at+0xd4/0x160
[ 475.291570][ T8657] ? user_path_at+0xd4/0x160
[ 475.291604][ T8657] __se_sys_mount+0x31d/0x420
[ 475.291631][ T8657] ? __pfx___se_sys_mount+0x10/0x10
[ 475.291659][ T8657] ? __x64_sys_mount+0x20/0xc0
[ 475.291679][ T8657] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 475.291700][ T8657] do_syscall_64+0x15f/0xf80
[ 475.291721][ T8657] ? trace_irq_disable+0x3b/0x140
[ 475.291746][ T8657] ? clear_bhb_loop+0x40/0x90
[ 475.291766][ T8657] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 475.291785][ T8657] RIP: 0033:0x7efc53a8c18a
[ 475.291802][ T8657] 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
[ 475.291819][ T8657] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 475.291839][ T8657] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 475.291853][ T8657] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 475.291866][ T8657] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 475.291879][ T8657] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 475.291891][ T8657] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 475.291921][ T8657]
[ 475.291962][ T8657] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 475.301663][ T8657] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 475.316651][ T8657] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 475.684491][ T8649] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 475.684510][ T8649] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 475.827927][ T8649] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 475.868545][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 475.868574][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 476.136636][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 268ms
[ 476.138465][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 476.138523][ T8649] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 476.166369][ T8649] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 476.323457][ T6197] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 476.591393][ T8659] loop1: detected capacity change from 0 to 32768
[ 476.620351][ T8659] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 476.620370][ T8659] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 476.721675][ T8659] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 476.754191][ T10] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 476.754213][ T10] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 476.837174][ T10] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 82ms
[ 476.839299][ T10] gfs2: fsid=syz:syz.0: jid=0: Done
[ 476.839708][ T8659] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 477.077938][ T8664] loop0: detected capacity change from 0 to 32768
[ 477.099553][ T8659] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 477.134760][ T8664] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 477.134783][ T8664] CPU: 0 UID: 0 PID: 8664 Comm: syz.0.449 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 477.134805][ T8664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 477.134815][ T8664] Call Trace:
[ 477.134822][ T8664]
[ 477.134831][ T8664] dump_stack_lvl+0xe8/0x150
[ 477.134861][ T8664] sysfs_create_dir_ns+0x271/0x2a0
[ 477.134885][ T8664] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 477.134913][ T8664] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 477.134939][ T8664] ? rt_spin_unlock+0x160/0x200
[ 477.134967][ T8664] kobject_add_internal+0x631/0xd10
[ 477.135000][ T8664] kobject_init_and_add+0x12b/0x1a0
[ 477.135031][ T8664] ? __pfx_kobject_init_and_add+0x10/0x10
[ 477.135058][ T8664] ? __raw_spin_lock_init+0x45/0x100
[ 477.135084][ T8664] ? __init_swait_queue_head+0xa9/0x150
[ 477.135113][ T8664] gfs2_sys_fs_add+0x257/0x480
[ 477.135137][ T8664] ? is_dynamic_key+0x1ac/0x1c0
[ 477.135157][ T8664] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 477.135189][ T8664] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 477.135235][ T8664] gfs2_fill_super+0x141c/0x2220
[ 477.135271][ T8664] ? __pfx_gfs2_fill_super+0x10/0x10
[ 477.135289][ T8664] ? rt_spin_unlock+0x14f/0x200
[ 477.135318][ T8664] ? sb_set_blocksize+0x11b/0x210
[ 477.135340][ T8664] ? setup_bdev_super+0x4c1/0x5b0
[ 477.135369][ T8664] get_tree_bdev_flags+0x431/0x4f0
[ 477.135396][ T8664] ? __pfx_gfs2_fill_super+0x10/0x10
[ 477.135415][ T8664] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 477.135438][ T8664] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 477.135477][ T8664] gfs2_get_tree+0x51/0x1e0
[ 477.135498][ T8664] vfs_get_tree+0x92/0x2a0
[ 477.135531][ T8664] do_new_mount+0x341/0xd30
[ 477.135549][ T8664] ? apparmor_capable+0x126/0x170
[ 477.135573][ T8664] ? __pfx_do_new_mount+0x10/0x10
[ 477.135592][ T8664] ? ns_capable+0x89/0xe0
[ 477.135619][ T8664] ? user_path_at+0xd4/0x160
[ 477.135646][ T8664] ? user_path_at+0xd4/0x160
[ 477.135678][ T8664] __se_sys_mount+0x31d/0x420
[ 477.135705][ T8664] ? __pfx___se_sys_mount+0x10/0x10
[ 477.135733][ T8664] ? __x64_sys_mount+0x20/0xc0
[ 477.135754][ T8664] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 477.135775][ T8664] do_syscall_64+0x15f/0xf80
[ 477.135795][ T8664] ? trace_irq_disable+0x3b/0x140
[ 477.135821][ T8664] ? clear_bhb_loop+0x40/0x90
[ 477.135844][ T8664] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 477.135868][ T8664] RIP: 0033:0x7fea951fc18a
[ 477.135886][ T8664] 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
[ 477.135902][ T8664] RSP: 002b:00007fea9485de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 477.135922][ T8664] RAX: ffffffffffffffda RBX: 00007fea9485dee0 RCX: 00007fea951fc18a
[ 477.135935][ T8664] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fea9485dea0
[ 477.135948][ T8664] RBP: 00002000000124c0 R08: 00007fea9485dee0 R09: 0000000000000000
[ 477.135960][ T8664] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 477.135973][ T8664] R13: 00007fea9485dea0 R14: 0000000000012588 R15: 0000200000000000
[ 477.136003][ T8664]
[ 477.136041][ T8664] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 477.136055][ T8664] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 477.274567][ T6196] syz-executor: attempt to access beyond end of device
[ 477.274567][ T6196] loop1: rw=12289, sector=68719479080, nr_sectors = 8 limit=32768
[ 477.274605][ T6196] Buffer I/O error on dev loop1, logical block 8589934885, lost async page write
[ 477.274714][ T6196] gfs2: fsid=syz:syz.0: fatal: I/O error - block = 8589934885, function = gfs2_ail1_start_one, file = fs/gfs2/log.c, line = 116
[ 477.274738][ T6196] CPU: 1 UID: 0 PID: 6196 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 477.274759][ T6196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 477.274770][ T6196] Call Trace:
[ 477.274778][ T6196]
[ 477.274786][ T6196] dump_stack_lvl+0xe8/0x150
[ 477.274815][ T6196] gfs2_withdraw+0xc3/0x1b0
[ 477.274838][ T6196] gfs2_ail1_flush+0x990/0xfd0
[ 477.274879][ T6196] ? __pfx_gfs2_ail1_flush+0x10/0x10
[ 477.274916][ T6196] empty_ail1_list+0x1b3/0x330
[ 477.274943][ T6196] ? __pfx_empty_ail1_list+0x10/0x10
[ 477.274998][ T6196] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 477.275027][ T6196] ? rt_spin_unlock+0x14f/0x200
[ 477.275055][ T6196] ? rt_spin_unlock+0x160/0x200
[ 477.275083][ T6196] __gfs2_log_flush+0x16d1/0x1dc0
[ 477.275121][ T6196] ? __pfx___gfs2_log_flush+0x10/0x10
[ 477.275154][ T6196] gfs2_log_flush+0x34/0x50
[ 477.275176][ T6196] gfs2_kill_sb+0x5c/0x430
[ 477.275201][ T6196] deactivate_locked_super+0xbc/0x130
[ 477.275227][ T6196] cleanup_mnt+0x437/0x4d0
[ 477.275251][ T6196] ? _raw_spin_unlock_irq+0x23/0x50
[ 477.275276][ T6196] task_work_run+0x1d9/0x270
[ 477.275299][ T6196] ? __pfx_task_work_run+0x10/0x10
[ 477.275330][ T6196] exit_to_user_mode_loop+0xf3/0x4d0
[ 477.275348][ T6196] ? rcu_is_watching+0x15/0xb0
[ 477.275375][ T6196] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 477.275394][ T6196] do_syscall_64+0x33e/0xf80
[ 477.275424][ T6196] ? trace_irq_disable+0x3b/0x140
[ 477.275450][ T6196] ? clear_bhb_loop+0x40/0x90
[ 477.275473][ T6196] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 477.275491][ T6196] RIP: 0033:0x7f0a5e2cc157
[ 477.275510][ T6196] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 477.275525][ T6196] RSP: 002b:00007ffeda269518 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 477.275545][ T6196] RAX: 0000000000000000 RBX: 00007f0a5e35f33b RCX: 00007f0a5e2cc157
[ 477.275558][ T6196] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeda2695d0
[ 477.275570][ T6196] RBP: 00007ffeda2695d0 R08: 00007ffeda26a5d0 R09: 00000000ffffffff
[ 477.275582][ T6196] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeda26a660
[ 477.275594][ T6196] R13: 00007f0a5e35f33b R14: 0000000000074698 R15: 00007ffeda26a6a0
[ 477.275625][ T6196]
[ 477.297847][ T6196] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 477.713072][ T8668] loop3: detected capacity change from 0 to 32768
[ 477.740657][ T6742] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 477.804236][ T8668] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 477.804259][ T8668] CPU: 1 UID: 0 PID: 8668 Comm: syz.3.451 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 477.804281][ T8668] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 477.804292][ T8668] Call Trace:
[ 477.804299][ T8668]
[ 477.804308][ T8668] dump_stack_lvl+0xe8/0x150
[ 477.804345][ T8668] sysfs_create_dir_ns+0x271/0x2a0
[ 477.804369][ T8668] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 477.804397][ T8668] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 477.804422][ T8668] ? rt_spin_unlock+0x160/0x200
[ 477.804448][ T8668] kobject_add_internal+0x631/0xd10
[ 477.804480][ T8668] kobject_init_and_add+0x12b/0x1a0
[ 477.804509][ T8668] ? __pfx_kobject_init_and_add+0x10/0x10
[ 477.804534][ T8668] ? __raw_spin_lock_init+0x45/0x100
[ 477.804561][ T8668] ? __init_swait_queue_head+0xa9/0x150
[ 477.804588][ T8668] gfs2_sys_fs_add+0x257/0x480
[ 477.804611][ T8668] ? is_dynamic_key+0x1ac/0x1c0
[ 477.804631][ T8668] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 477.804661][ T8668] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 477.804697][ T8668] gfs2_fill_super+0x141c/0x2220
[ 477.804731][ T8668] ? __pfx_gfs2_fill_super+0x10/0x10
[ 477.804748][ T8668] ? rt_spin_unlock+0x14f/0x200
[ 477.804776][ T8668] ? sb_set_blocksize+0x11b/0x210
[ 477.804797][ T8668] ? setup_bdev_super+0x4c1/0x5b0
[ 477.804825][ T8668] get_tree_bdev_flags+0x431/0x4f0
[ 477.804850][ T8668] ? __pfx_gfs2_fill_super+0x10/0x10
[ 477.804868][ T8668] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 477.804890][ T8668] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 477.804926][ T8668] gfs2_get_tree+0x51/0x1e0
[ 477.804947][ T8668] vfs_get_tree+0x92/0x2a0
[ 477.804974][ T8668] do_new_mount+0x341/0xd30
[ 477.804993][ T8668] ? apparmor_capable+0x126/0x170
[ 477.805028][ T8668] ? __pfx_do_new_mount+0x10/0x10
[ 477.805048][ T8668] ? ns_capable+0x89/0xe0
[ 477.805072][ T8668] ? user_path_at+0xd4/0x160
[ 477.805093][ T8668] ? user_path_at+0xd4/0x160
[ 477.805126][ T8668] __se_sys_mount+0x31d/0x420
[ 477.805150][ T8668] ? __pfx___se_sys_mount+0x10/0x10
[ 477.805175][ T8668] ? __x64_sys_mount+0x20/0xc0
[ 477.805194][ T8668] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 477.805212][ T8668] do_syscall_64+0x15f/0xf80
[ 477.805231][ T8668] ? trace_irq_disable+0x3b/0x140
[ 477.805256][ T8668] ? clear_bhb_loop+0x40/0x90
[ 477.805277][ T8668] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 477.805294][ T8668] RIP: 0033:0x7f199338c18a
[ 477.805312][ T8668] 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
[ 477.805336][ T8668] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 477.805356][ T8668] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 477.805369][ T8668] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 477.805485][ T8668] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 477.805498][ T8668] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 477.805508][ T8668] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 477.805539][ T8668]
[ 477.818436][ T8668] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 477.818460][ T8668] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 478.295893][ T6880] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 478.611225][ T8672] loop4: detected capacity change from 0 to 32768
[ 478.641997][ T8672] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 478.642018][ T8672] CPU: 1 UID: 0 PID: 8672 Comm: syz.4.452 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 478.642040][ T8672] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 478.642051][ T8672] Call Trace:
[ 478.642058][ T8672]
[ 478.642066][ T8672] dump_stack_lvl+0xe8/0x150
[ 478.642095][ T8672] sysfs_create_dir_ns+0x271/0x2a0
[ 478.642120][ T8672] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 478.642146][ T8672] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 478.642171][ T8672] ? rt_spin_unlock+0x160/0x200
[ 478.642196][ T8672] kobject_add_internal+0x631/0xd10
[ 478.642227][ T8672] kobject_init_and_add+0x12b/0x1a0
[ 478.642255][ T8672] ? __pfx_kobject_init_and_add+0x10/0x10
[ 478.642294][ T8672] ? __raw_spin_lock_init+0x45/0x100
[ 478.642319][ T8672] ? __init_swait_queue_head+0xa9/0x150
[ 478.642348][ T8672] gfs2_sys_fs_add+0x257/0x480
[ 478.642370][ T8672] ? is_dynamic_key+0x1ac/0x1c0
[ 478.642388][ T8672] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 478.642420][ T8672] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 478.642455][ T8672] gfs2_fill_super+0x141c/0x2220
[ 478.642487][ T8672] ? __pfx_gfs2_fill_super+0x10/0x10
[ 478.642511][ T8672] ? rt_spin_unlock+0x14f/0x200
[ 478.642540][ T8672] ? sb_set_blocksize+0x11b/0x210
[ 478.642562][ T8672] ? setup_bdev_super+0x4c1/0x5b0
[ 478.642591][ T8672] get_tree_bdev_flags+0x431/0x4f0
[ 478.642617][ T8672] ? __pfx_gfs2_fill_super+0x10/0x10
[ 478.642635][ T8672] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 478.642657][ T8672] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 478.642693][ T8672] gfs2_get_tree+0x51/0x1e0
[ 478.642716][ T8672] vfs_get_tree+0x92/0x2a0
[ 478.642743][ T8672] do_new_mount+0x341/0xd30
[ 478.642764][ T8672] ? apparmor_capable+0x126/0x170
[ 478.642791][ T8672] ? __pfx_do_new_mount+0x10/0x10
[ 478.642813][ T8672] ? ns_capable+0x89/0xe0
[ 478.642839][ T8672] ? user_path_at+0xd4/0x160
[ 478.642865][ T8672] ? user_path_at+0xd4/0x160
[ 478.642890][ T8672] __se_sys_mount+0x31d/0x420
[ 478.642918][ T8672] ? __pfx___se_sys_mount+0x10/0x10
[ 478.642946][ T8672] ? __x64_sys_mount+0x20/0xc0
[ 478.642966][ T8672] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 478.642986][ T8672] do_syscall_64+0x15f/0xf80
[ 478.643006][ T8672] ? trace_irq_disable+0x3b/0x140
[ 478.643031][ T8672] ? clear_bhb_loop+0x40/0x90
[ 478.643052][ T8672] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 478.643071][ T8672] RIP: 0033:0x7efc53a8c18a
[ 478.643090][ T8672] 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
[ 478.643105][ T8672] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 478.643125][ T8672] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 478.643139][ T8672] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 478.643152][ T8672] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 478.643164][ T8672] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 478.643176][ T8672] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 478.643206][ T8672]
[ 478.654175][ T8672] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 478.654196][ T8672] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 479.078449][ T6880] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 479.135345][ T8677] loop2: detected capacity change from 0 to 32768
[ 479.155651][ T8677] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 479.155674][ T8677] CPU: 0 UID: 0 PID: 8677 Comm: syz.2.453 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 479.155696][ T8677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 479.155707][ T8677] Call Trace:
[ 479.155715][ T8677]
[ 479.155723][ T8677] dump_stack_lvl+0xe8/0x150
[ 479.155752][ T8677] sysfs_create_dir_ns+0x271/0x2a0
[ 479.155777][ T8677] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 479.155804][ T8677] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 479.155830][ T8677] ? rt_spin_unlock+0x160/0x200
[ 479.155858][ T8677] kobject_add_internal+0x631/0xd10
[ 479.155892][ T8677] kobject_init_and_add+0x12b/0x1a0
[ 479.155921][ T8677] ? __pfx_kobject_init_and_add+0x10/0x10
[ 479.155948][ T8677] ? __raw_spin_lock_init+0x45/0x100
[ 479.155975][ T8677] ? __init_swait_queue_head+0xa9/0x150
[ 479.156005][ T8677] gfs2_sys_fs_add+0x257/0x480
[ 479.156028][ T8677] ? is_dynamic_key+0x1ac/0x1c0
[ 479.156048][ T8677] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 479.156080][ T8677] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 479.156115][ T8677] gfs2_fill_super+0x141c/0x2220
[ 479.156151][ T8677] ? __pfx_gfs2_fill_super+0x10/0x10
[ 479.156168][ T8677] ? rt_spin_unlock+0x14f/0x200
[ 479.156203][ T8677] ? sb_set_blocksize+0x11b/0x210
[ 479.156223][ T8677] ? setup_bdev_super+0x4c1/0x5b0
[ 479.156249][ T8677] get_tree_bdev_flags+0x431/0x4f0
[ 479.156274][ T8677] ? __pfx_gfs2_fill_super+0x10/0x10
[ 479.156293][ T8677] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 479.156316][ T8677] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 479.156363][ T8677] gfs2_get_tree+0x51/0x1e0
[ 479.156387][ T8677] vfs_get_tree+0x92/0x2a0
[ 479.156418][ T8677] do_new_mount+0x341/0xd30
[ 479.156438][ T8677] ? apparmor_capable+0x126/0x170
[ 479.156465][ T8677] ? __pfx_do_new_mount+0x10/0x10
[ 479.156486][ T8677] ? ns_capable+0x89/0xe0
[ 479.156514][ T8677] ? user_path_at+0xd4/0x160
[ 479.156542][ T8677] ? user_path_at+0xd4/0x160
[ 479.156567][ T8677] __se_sys_mount+0x31d/0x420
[ 479.156595][ T8677] ? __pfx___se_sys_mount+0x10/0x10
[ 479.156623][ T8677] ? __x64_sys_mount+0x20/0xc0
2026/05/07 22:14:46 executed programs: 451
[ 479.156644][ T8677] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 479.156664][ T8677] do_syscall_64+0x15f/0xf80
[ 479.156685][ T8677] ? trace_irq_disable+0x3b/0x140
[ 479.156711][ T8677] ? clear_bhb_loop+0x40/0x90
[ 479.156733][ T8677] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 479.156748][ T8677] RIP: 0033:0x7fb6c94bc18a
[ 479.156766][ T8677] 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
[ 479.156781][ T8677] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 479.156801][ T8677] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 479.156814][ T8677] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 479.156828][ T8677] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 479.156841][ T8677] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 479.156853][ T8677] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 479.156883][ T8677]
[ 479.156922][ T8677] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 479.156936][ T8677] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 479.681482][ T6742] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 479.840315][ T8687] loop3: detected capacity change from 0 to 32768
[ 479.857586][ T8687] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 479.857609][ T8687] CPU: 1 UID: 0 PID: 8687 Comm: syz.3.456 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 479.857631][ T8687] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 479.857642][ T8687] Call Trace:
[ 479.857649][ T8687]
[ 479.857658][ T8687] dump_stack_lvl+0xe8/0x150
[ 479.857686][ T8687] sysfs_create_dir_ns+0x271/0x2a0
[ 479.857710][ T8687] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 479.857739][ T8687] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 479.857762][ T8687] ? rt_spin_unlock+0x160/0x200
[ 479.857787][ T8687] kobject_add_internal+0x631/0xd10
[ 479.857819][ T8687] kobject_init_and_add+0x12b/0x1a0
[ 479.857848][ T8687] ? __pfx_kobject_init_and_add+0x10/0x10
[ 479.857878][ T8687] ? __raw_spin_lock_init+0x45/0x100
[ 479.857906][ T8687] ? __init_swait_queue_head+0xa9/0x150
[ 479.857936][ T8687] gfs2_sys_fs_add+0x257/0x480
[ 479.857959][ T8687] ? is_dynamic_key+0x1ac/0x1c0
[ 479.857978][ T8687] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 479.858009][ T8687] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 479.858044][ T8687] gfs2_fill_super+0x141c/0x2220
[ 479.858078][ T8687] ? __pfx_gfs2_fill_super+0x10/0x10
[ 479.858108][ T8687] ? rt_spin_unlock+0x14f/0x200
[ 479.858138][ T8687] ? sb_set_blocksize+0x11b/0x210
[ 479.858160][ T8687] ? setup_bdev_super+0x4c1/0x5b0
[ 479.858188][ T8687] get_tree_bdev_flags+0x431/0x4f0
[ 479.858214][ T8687] ? __pfx_gfs2_fill_super+0x10/0x10
[ 479.858231][ T8687] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 479.858254][ T8687] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 479.858290][ T8687] gfs2_get_tree+0x51/0x1e0
[ 479.858311][ T8687] vfs_get_tree+0x92/0x2a0
[ 479.858338][ T8687] do_new_mount+0x341/0xd30
[ 479.858357][ T8687] ? apparmor_capable+0x126/0x170
[ 479.858383][ T8687] ? __pfx_do_new_mount+0x10/0x10
[ 479.858403][ T8687] ? ns_capable+0x89/0xe0
[ 479.858431][ T8687] ? user_path_at+0xd4/0x160
[ 479.858459][ T8687] ? user_path_at+0xd4/0x160
[ 479.858482][ T8687] __se_sys_mount+0x31d/0x420
[ 479.858506][ T8687] ? __pfx___se_sys_mount+0x10/0x10
[ 479.858532][ T8687] ? __x64_sys_mount+0x20/0xc0
[ 479.858553][ T8687] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 479.858572][ T8687] do_syscall_64+0x15f/0xf80
[ 479.858592][ T8687] ? trace_irq_disable+0x3b/0x140
[ 479.858617][ T8687] ? clear_bhb_loop+0x40/0x90
[ 479.858639][ T8687] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 479.858656][ T8687] RIP: 0033:0x7f199338c18a
[ 479.858674][ T8687] 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
[ 479.858690][ T8687] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 479.858709][ T8687] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 479.858721][ T8687] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 479.858734][ T8687] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 479.858745][ T8687] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 479.858756][ T8687] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 479.858782][ T8687]
[ 479.863771][ T8687] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 479.863792][ T8687] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 480.358670][ T8683] loop0: detected capacity change from 0 to 32768
[ 480.390875][ T8683] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 480.390898][ T8683] CPU: 0 UID: 0 PID: 8683 Comm: syz.0.455 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 480.390917][ T8683] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 480.390928][ T8683] Call Trace:
[ 480.390935][ T8683]
[ 480.390942][ T8683] dump_stack_lvl+0xe8/0x150
[ 480.390969][ T8683] sysfs_create_dir_ns+0x271/0x2a0
[ 480.390990][ T8683] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 480.391017][ T8683] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 480.391042][ T8683] ? rt_spin_unlock+0x160/0x200
[ 480.391066][ T8683] kobject_add_internal+0x631/0xd10
[ 480.391097][ T8683] kobject_init_and_add+0x12b/0x1a0
[ 480.391126][ T8683] ? __pfx_kobject_init_and_add+0x10/0x10
[ 480.391152][ T8683] ? __raw_spin_lock_init+0x45/0x100
[ 480.391180][ T8683] ? __init_swait_queue_head+0xa9/0x150
[ 480.391210][ T8683] gfs2_sys_fs_add+0x257/0x480
[ 480.391263][ T8683] ? is_dynamic_key+0x1ac/0x1c0
[ 480.391283][ T8683] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 480.391322][ T8683] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 480.391357][ T8683] gfs2_fill_super+0x141c/0x2220
[ 480.391393][ T8683] ? __pfx_gfs2_fill_super+0x10/0x10
[ 480.391411][ T8683] ? rt_spin_unlock+0x14f/0x200
[ 480.391440][ T8683] ? sb_set_blocksize+0x11b/0x210
[ 480.391462][ T8683] ? setup_bdev_super+0x4c1/0x5b0
[ 480.391491][ T8683] get_tree_bdev_flags+0x431/0x4f0
[ 480.391517][ T8683] ? __pfx_gfs2_fill_super+0x10/0x10
[ 480.391536][ T8683] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 480.391559][ T8683] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 480.391594][ T8683] gfs2_get_tree+0x51/0x1e0
[ 480.391617][ T8683] vfs_get_tree+0x92/0x2a0
[ 480.391643][ T8683] do_new_mount+0x341/0xd30
[ 480.391660][ T8683] ? apparmor_capable+0x126/0x170
[ 480.391686][ T8683] ? __pfx_do_new_mount+0x10/0x10
[ 480.391707][ T8683] ? ns_capable+0x89/0xe0
[ 480.391735][ T8683] ? user_path_at+0xd4/0x160
[ 480.391763][ T8683] ? user_path_at+0xd4/0x160
[ 480.391788][ T8683] __se_sys_mount+0x31d/0x420
[ 480.391816][ T8683] ? __pfx___se_sys_mount+0x10/0x10
[ 480.391845][ T8683] ? __x64_sys_mount+0x20/0xc0
[ 480.391865][ T8683] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 480.391886][ T8683] do_syscall_64+0x15f/0xf80
[ 480.391906][ T8683] ? trace_irq_disable+0x3b/0x140
[ 480.391932][ T8683] ? clear_bhb_loop+0x40/0x90
[ 480.391955][ T8683] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 480.391973][ T8683] RIP: 0033:0x7fea951fc18a
[ 480.391991][ T8683] 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
[ 480.392006][ T8683] RSP: 002b:00007fea9485de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 480.392026][ T8683] RAX: ffffffffffffffda RBX: 00007fea9485dee0 RCX: 00007fea951fc18a
[ 480.392040][ T8683] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fea9485dea0
[ 480.392053][ T8683] RBP: 00002000000124c0 R08: 00007fea9485dee0 R09: 0000000000000000
[ 480.392065][ T8683] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 480.392080][ T8683] R13: 00007fea9485dea0 R14: 0000000000012588 R15: 0000200000000000
[ 480.392111][ T8683]
[ 480.392862][ T8683] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 480.392879][ T8683] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 480.612666][ T6742] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 480.848617][ T6880] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 481.410008][ T8691] loop4: detected capacity change from 0 to 32768
[ 481.454156][ T8691] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 481.454180][ T8691] CPU: 1 UID: 0 PID: 8691 Comm: syz.4.457 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 481.454201][ T8691] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 481.454217][ T8691] Call Trace:
[ 481.454232][ T8691]
[ 481.454240][ T8691] dump_stack_lvl+0xe8/0x150
[ 481.454268][ T8691] sysfs_create_dir_ns+0x271/0x2a0
[ 481.454292][ T8691] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 481.454320][ T8691] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 481.454345][ T8691] ? rt_spin_unlock+0x160/0x200
[ 481.454372][ T8691] kobject_add_internal+0x631/0xd10
[ 481.454405][ T8691] kobject_init_and_add+0x12b/0x1a0
[ 481.454435][ T8691] ? __pfx_kobject_init_and_add+0x10/0x10
[ 481.454461][ T8691] ? __raw_spin_lock_init+0x45/0x100
[ 481.454489][ T8691] ? __init_swait_queue_head+0xa9/0x150
[ 481.454519][ T8691] gfs2_sys_fs_add+0x257/0x480
[ 481.454542][ T8691] ? is_dynamic_key+0x1ac/0x1c0
[ 481.454563][ T8691] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 481.454594][ T8691] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 481.454628][ T8691] gfs2_fill_super+0x141c/0x2220
[ 481.454663][ T8691] ? __pfx_gfs2_fill_super+0x10/0x10
[ 481.454681][ T8691] ? rt_spin_unlock+0x14f/0x200
[ 481.454722][ T8691] ? sb_set_blocksize+0x11b/0x210
[ 481.454744][ T8691] ? setup_bdev_super+0x4c1/0x5b0
[ 481.454774][ T8691] get_tree_bdev_flags+0x431/0x4f0
[ 481.454800][ T8691] ? __pfx_gfs2_fill_super+0x10/0x10
[ 481.454819][ T8691] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 481.454842][ T8691] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 481.454878][ T8691] gfs2_get_tree+0x51/0x1e0
[ 481.454900][ T8691] vfs_get_tree+0x92/0x2a0
[ 481.454929][ T8691] do_new_mount+0x341/0xd30
[ 481.454948][ T8691] ? apparmor_capable+0x126/0x170
[ 481.454980][ T8691] ? __pfx_do_new_mount+0x10/0x10
[ 481.455002][ T8691] ? ns_capable+0x89/0xe0
[ 481.455029][ T8691] ? user_path_at+0xd4/0x160
[ 481.455057][ T8691] ? user_path_at+0xd4/0x160
[ 481.455082][ T8691] __se_sys_mount+0x31d/0x420
[ 481.455109][ T8691] ? __pfx___se_sys_mount+0x10/0x10
[ 481.455137][ T8691] ? __x64_sys_mount+0x20/0xc0
[ 481.455156][ T8691] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 481.455177][ T8691] do_syscall_64+0x15f/0xf80
[ 481.455197][ T8691] ? trace_irq_disable+0x3b/0x140
[ 481.455228][ T8691] ? clear_bhb_loop+0x40/0x90
[ 481.455249][ T8691] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 481.455269][ T8691] RIP: 0033:0x7efc53a8c18a
[ 481.455288][ T8691] 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
[ 481.455304][ T8691] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 481.455324][ T8691] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 481.455338][ T8691] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 481.455351][ T8691] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 481.455363][ T8691] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 481.455375][ T8691] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 481.455405][ T8691]
[ 481.462751][ T8691] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 481.462774][ T8691] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 481.649587][ T8699] loop3: detected capacity change from 0 to 32768
[ 481.701449][ T8699] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 481.701471][ T8699] CPU: 1 UID: 0 PID: 8699 Comm: syz.3.459 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 481.701492][ T8699] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 481.701503][ T8699] Call Trace:
[ 481.701510][ T8699]
[ 481.701518][ T8699] dump_stack_lvl+0xe8/0x150
[ 481.701547][ T8699] sysfs_create_dir_ns+0x271/0x2a0
[ 481.701569][ T8699] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 481.701596][ T8699] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 481.701622][ T8699] ? rt_spin_unlock+0x160/0x200
[ 481.701649][ T8699] kobject_add_internal+0x631/0xd10
[ 481.701680][ T8699] kobject_init_and_add+0x12b/0x1a0
[ 481.701710][ T8699] ? __pfx_kobject_init_and_add+0x10/0x10
[ 481.701736][ T8699] ? __raw_spin_lock_init+0x45/0x100
[ 481.701763][ T8699] ? __init_swait_queue_head+0xa9/0x150
[ 481.701790][ T8699] gfs2_sys_fs_add+0x257/0x480
[ 481.701813][ T8699] ? is_dynamic_key+0x1ac/0x1c0
[ 481.701833][ T8699] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 481.701864][ T8699] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 481.701896][ T8699] gfs2_fill_super+0x141c/0x2220
[ 481.701929][ T8699] ? __pfx_gfs2_fill_super+0x10/0x10
[ 481.701946][ T8699] ? rt_spin_unlock+0x14f/0x200
[ 481.701974][ T8699] ? sb_set_blocksize+0x11b/0x210
[ 481.701995][ T8699] ? setup_bdev_super+0x4c1/0x5b0
[ 481.702024][ T8699] get_tree_bdev_flags+0x431/0x4f0
[ 481.702049][ T8699] ? __pfx_gfs2_fill_super+0x10/0x10
[ 481.702067][ T8699] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 481.702090][ T8699] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 481.702124][ T8699] gfs2_get_tree+0x51/0x1e0
[ 481.702146][ T8699] vfs_get_tree+0x92/0x2a0
[ 481.702173][ T8699] do_new_mount+0x341/0xd30
[ 481.702200][ T8699] ? apparmor_capable+0x126/0x170
[ 481.702226][ T8699] ? __pfx_do_new_mount+0x10/0x10
[ 481.702247][ T8699] ? ns_capable+0x89/0xe0
[ 481.702275][ T8699] ? user_path_at+0xd4/0x160
[ 481.702302][ T8699] ? user_path_at+0xd4/0x160
[ 481.702326][ T8699] __se_sys_mount+0x31d/0x420
[ 481.702353][ T8699] ? __pfx___se_sys_mount+0x10/0x10
[ 481.702380][ T8699] ? __x64_sys_mount+0x20/0xc0
[ 481.702401][ T8699] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 481.702420][ T8699] do_syscall_64+0x15f/0xf80
[ 481.702440][ T8699] ? trace_irq_disable+0x3b/0x140
[ 481.702465][ T8699] ? clear_bhb_loop+0x40/0x90
[ 481.702486][ T8699] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 481.702504][ T8699] RIP: 0033:0x7f199338c18a
[ 481.702522][ T8699] 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
[ 481.702537][ T8699] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 481.702558][ T8699] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 481.702608][ T8699] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 481.702620][ T8699] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 481.702632][ T8699] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 481.702643][ T8699] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 481.702673][ T8699]
[ 481.702708][ T8699] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 481.702735][ T8699] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 481.952045][ T6880] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 482.171666][ T8695] loop2: detected capacity change from 0 to 32768
[ 482.222404][ T8695] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 482.222426][ T8695] CPU: 0 UID: 0 PID: 8695 Comm: syz.2.458 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 482.222445][ T8695] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 482.222457][ T8695] Call Trace:
[ 482.222464][ T8695]
[ 482.222473][ T8695] dump_stack_lvl+0xe8/0x150
[ 482.222501][ T8695] sysfs_create_dir_ns+0x271/0x2a0
[ 482.222524][ T8695] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 482.222550][ T8695] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 482.222572][ T8695] ? rt_spin_unlock+0x160/0x200
[ 482.222598][ T8695] kobject_add_internal+0x631/0xd10
[ 482.222628][ T8695] kobject_init_and_add+0x12b/0x1a0
[ 482.222653][ T8695] ? __pfx_kobject_init_and_add+0x10/0x10
[ 482.222676][ T8695] ? __raw_spin_lock_init+0x45/0x100
[ 482.222701][ T8695] ? __init_swait_queue_head+0xa9/0x150
[ 482.222728][ T8695] gfs2_sys_fs_add+0x257/0x480
[ 482.222749][ T8695] ? is_dynamic_key+0x1ac/0x1c0
[ 482.222766][ T8695] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 482.222827][ T8695] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 482.222864][ T8695] gfs2_fill_super+0x141c/0x2220
[ 482.222895][ T8695] ? __pfx_gfs2_fill_super+0x10/0x10
[ 482.222911][ T8695] ? rt_spin_unlock+0x14f/0x200
[ 482.222939][ T8695] ? sb_set_blocksize+0x11b/0x210
[ 482.222972][ T8695] ? setup_bdev_super+0x4c1/0x5b0
[ 482.223000][ T8695] get_tree_bdev_flags+0x431/0x4f0
[ 482.223023][ T8695] ? __pfx_gfs2_fill_super+0x10/0x10
[ 482.223049][ T8695] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 482.223073][ T8695] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 482.223107][ T8695] gfs2_get_tree+0x51/0x1e0
[ 482.223137][ T8695] vfs_get_tree+0x92/0x2a0
[ 482.223185][ T8695] do_new_mount+0x341/0xd30
[ 482.223218][ T8695] ? apparmor_capable+0x126/0x170
[ 482.223300][ T8695] ? __pfx_do_new_mount+0x10/0x10
[ 482.223319][ T8695] ? ns_capable+0x89/0xe0
[ 482.223346][ T8695] ? user_path_at+0xd4/0x160
[ 482.223372][ T8695] ? user_path_at+0xd4/0x160
[ 482.223403][ T8695] __se_sys_mount+0x31d/0x420
[ 482.223431][ T8695] ? __pfx___se_sys_mount+0x10/0x10
[ 482.223455][ T8695] ? __x64_sys_mount+0x20/0xc0
[ 482.223474][ T8695] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 482.223493][ T8695] do_syscall_64+0x15f/0xf80
[ 482.223514][ T8695] ? trace_irq_disable+0x3b/0x140
[ 482.223537][ T8695] ? clear_bhb_loop+0x40/0x90
[ 482.223559][ T8695] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 482.223578][ T8695] RIP: 0033:0x7fb6c94bc18a
[ 482.223597][ T8695] 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
[ 482.223613][ T8695] RSP: 002b:00007fb6c8b1de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 482.223633][ T8695] RAX: ffffffffffffffda RBX: 00007fb6c8b1dee0 RCX: 00007fb6c94bc18a
[ 482.223647][ T8695] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007fb6c8b1dea0
[ 482.223660][ T8695] RBP: 00002000000124c0 R08: 00007fb6c8b1dee0 R09: 0000000000000000
[ 482.223672][ T8695] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 482.223685][ T8695] R13: 00007fb6c8b1dea0 R14: 0000000000012588 R15: 0000200000000000
[ 482.223715][ T8695]
[ 482.223818][ T8695] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 482.223833][ T8695] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 482.292292][ T6742] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 482.319287][ T821] gfs2: fsid=syz:syz.0: file system withdrawn
[ 482.782835][ T6673] __loop_clr_fd(loop2) clearing lo_backing_file (refcnt=0x0)
[ 482.914069][ T6196] __loop_clr_fd(loop1) clearing lo_backing_file (refcnt=0x0)
[ 483.478124][ T8703] loop0: detected capacity change from 0 to 32768
[ 483.518824][ T8703] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 483.518857][ T8703] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 483.630199][ T8703] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 483.650159][ T821] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 483.650179][ T821] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 483.795397][ T8707] loop4: detected capacity change from 0 to 32768
[ 483.810868][ T8707] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 483.810890][ T8707] CPU: 0 UID: 0 PID: 8707 Comm: syz.4.461 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 483.810911][ T8707] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 483.810920][ T8707] Call Trace:
[ 483.810927][ T8707]
[ 483.810934][ T8707] dump_stack_lvl+0xe8/0x150
[ 483.810962][ T8707] sysfs_create_dir_ns+0x271/0x2a0
[ 483.810984][ T8707] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 483.811011][ T8707] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 483.811034][ T8707] ? rt_spin_unlock+0x160/0x200
[ 483.811059][ T8707] kobject_add_internal+0x631/0xd10
[ 483.811097][ T8707] kobject_init_and_add+0x12b/0x1a0
[ 483.811123][ T8707] ? __pfx_kobject_init_and_add+0x10/0x10
[ 483.811145][ T8707] ? __raw_spin_lock_init+0x45/0x100
[ 483.811172][ T8707] ? __init_swait_queue_head+0xa9/0x150
[ 483.811200][ T8707] gfs2_sys_fs_add+0x257/0x480
[ 483.811222][ T8707] ? is_dynamic_key+0x1ac/0x1c0
[ 483.811241][ T8707] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 483.811268][ T8707] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 483.811299][ T8707] gfs2_fill_super+0x141c/0x2220
[ 483.811333][ T8707] ? __pfx_gfs2_fill_super+0x10/0x10
[ 483.811351][ T8707] ? rt_spin_unlock+0x14f/0x200
[ 483.811379][ T8707] ? sb_set_blocksize+0x11b/0x210
[ 483.811401][ T8707] ? setup_bdev_super+0x4c1/0x5b0
[ 483.811430][ T8707] get_tree_bdev_flags+0x431/0x4f0
[ 483.811454][ T8707] ? __pfx_gfs2_fill_super+0x10/0x10
[ 483.811473][ T8707] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 483.811496][ T8707] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 483.811530][ T8707] gfs2_get_tree+0x51/0x1e0
[ 483.811551][ T8707] vfs_get_tree+0x92/0x2a0
[ 483.811579][ T8707] do_new_mount+0x341/0xd30
[ 483.811599][ T8707] ? apparmor_capable+0x126/0x170
[ 483.811626][ T8707] ? __pfx_do_new_mount+0x10/0x10
[ 483.811650][ T8707] ? ns_capable+0x89/0xe0
[ 483.811678][ T8707] ? user_path_at+0xd4/0x160
[ 483.811705][ T8707] ? user_path_at+0xd4/0x160
[ 483.811728][ T8707] __se_sys_mount+0x31d/0x420
[ 483.811755][ T8707] ? __pfx___se_sys_mount+0x10/0x10
[ 483.811783][ T8707] ? __x64_sys_mount+0x20/0xc0
[ 483.811804][ T8707] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 483.811822][ T8707] do_syscall_64+0x15f/0xf80
[ 483.811843][ T8707] ? trace_irq_disable+0x3b/0x140
[ 483.811869][ T8707] ? clear_bhb_loop+0x40/0x90
[ 483.811892][ T8707] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 483.811909][ T8707] RIP: 0033:0x7efc53a8c18a
[ 483.811927][ T8707] 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
[ 483.811940][ T8707] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 483.811959][ T8707] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 483.811972][ T8707] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 483.811986][ T8707] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 483.811997][ T8707] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 483.812008][ T8707] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 483.812038][ T8707]
[ 483.812155][ T8707] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 483.812171][ T8707] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 483.984668][ T821] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 334ms
[ 483.984889][ T821] gfs2: fsid=syz:syz.0: jid=0: Done
[ 484.005962][ T8703] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 484.082265][ T8703] gfs2: fsid=syz:syz.0: can't create logd thread: -4
[ 484.449177][ T6880] __loop_clr_fd(loop0) clearing lo_backing_file (refcnt=0x0)
[ 484.509094][ T8718] loop1: detected capacity change from 0 to 32768
[ 484.533293][ T8718] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 484.533312][ T8718] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 484.545621][ T6742] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)
[ 484.663551][ T8711] loop3: detected capacity change from 0 to 32768
[ 484.695735][ T8711] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 484.695759][ T8711] CPU: 0 UID: 0 PID: 8711 Comm: syz.3.462 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 484.695779][ T8711] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 484.695790][ T8711] Call Trace:
[ 484.695797][ T8711]
[ 484.695805][ T8711] dump_stack_lvl+0xe8/0x150
[ 484.695839][ T8711] sysfs_create_dir_ns+0x271/0x2a0
[ 484.695863][ T8711] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 484.695890][ T8711] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 484.695916][ T8711] ? rt_spin_unlock+0x160/0x200
[ 484.695944][ T8711] kobject_add_internal+0x631/0xd10
[ 484.695981][ T8711] kobject_init_and_add+0x12b/0x1a0
[ 484.696011][ T8711] ? __pfx_kobject_init_and_add+0x10/0x10
[ 484.696038][ T8711] ? __raw_spin_lock_init+0x45/0x100
[ 484.696066][ T8711] ? __init_swait_queue_head+0xa9/0x150
[ 484.696096][ T8711] gfs2_sys_fs_add+0x257/0x480
[ 484.696119][ T8711] ? is_dynamic_key+0x1ac/0x1c0
[ 484.696139][ T8711] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 484.696171][ T8711] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 484.696208][ T8711] gfs2_fill_super+0x141c/0x2220
[ 484.696244][ T8711] ? __pfx_gfs2_fill_super+0x10/0x10
[ 484.696262][ T8711] ? rt_spin_unlock+0x14f/0x200
[ 484.696291][ T8711] ? sb_set_blocksize+0x11b/0x210
[ 484.696313][ T8711] ? setup_bdev_super+0x4c1/0x5b0
[ 484.696342][ T8711] get_tree_bdev_flags+0x431/0x4f0
[ 484.696368][ T8711] ? __pfx_gfs2_fill_super+0x10/0x10
2026/05/07 22:14:51 executed programs: 459
[ 484.696387][ T8711] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 484.696410][ T8711] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 484.696444][ T8711] gfs2_get_tree+0x51/0x1e0
[ 484.696467][ T8711] vfs_get_tree+0x92/0x2a0
[ 484.696495][ T8711] do_new_mount+0x341/0xd30
[ 484.696515][ T8711] ? apparmor_capable+0x126/0x170
[ 484.696540][ T8711] ? __pfx_do_new_mount+0x10/0x10
[ 484.696562][ T8711] ? ns_capable+0x89/0xe0
[ 484.696590][ T8711] ? user_path_at+0xd4/0x160
[ 484.696617][ T8711] ? user_path_at+0xd4/0x160
[ 484.696650][ T8711] __se_sys_mount+0x31d/0x420
[ 484.696678][ T8711] ? __pfx___se_sys_mount+0x10/0x10
[ 484.696705][ T8711] ? __x64_sys_mount+0x20/0xc0
[ 484.696725][ T8711] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 484.696746][ T8711] do_syscall_64+0x15f/0xf80
[ 484.696767][ T8711] ? trace_irq_disable+0x3b/0x140
[ 484.696792][ T8711] ? clear_bhb_loop+0x40/0x90
[ 484.696815][ T8711] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 484.696833][ T8711] RIP: 0033:0x7f199338c18a
[ 484.696852][ T8711] 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
[ 484.696867][ T8711] RSP: 002b:00007f19929ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 484.696886][ T8711] RAX: ffffffffffffffda RBX: 00007f19929edee0 RCX: 00007f199338c18a
[ 484.696901][ T8711] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007f19929edea0
[ 484.696913][ T8711] RBP: 00002000000124c0 R08: 00007f19929edee0 R09: 0000000000000000
[ 484.696925][ T8711] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 484.696937][ T8711] R13: 00007f19929edea0 R14: 0000000000012588 R15: 0000200000000000
[ 484.696966][ T8711]
[ 484.703455][ T8711] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 484.703477][ T8711] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 484.784281][ T8718] gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
[ 484.831423][ T821] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 484.831445][ T821] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 485.324857][ T821] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 493ms
[ 485.325113][ T821] gfs2: fsid=syz:syz.0: jid=0: Done
[ 485.327794][ T8718] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 485.423486][ T6916] __loop_clr_fd(loop3) clearing lo_backing_file (refcnt=0x0)
[ 485.736525][ T8718] gfs2: fsid=syz:syz.0: found 1 quota changes
[ 485.922099][ T6196] syz-executor: attempt to access beyond end of device
[ 485.922099][ T6196] loop1: rw=12289, sector=68719479080, nr_sectors = 8 limit=32768
[ 485.922134][ T6196] Buffer I/O error on dev loop1, logical block 8589934885, lost async page write
[ 485.922249][ T6196] gfs2: fsid=syz:syz.0: fatal: I/O error - block = 8589934885, function = gfs2_ail1_start_one, file = fs/gfs2/log.c, line = 116
[ 485.922273][ T6196] CPU: 1 UID: 0 PID: 6196 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 485.922293][ T6196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 485.922303][ T6196] Call Trace:
[ 485.922312][ T6196]
[ 485.922319][ T6196] dump_stack_lvl+0xe8/0x150
[ 485.922346][ T6196] gfs2_withdraw+0xc3/0x1b0
[ 485.922366][ T6196] gfs2_ail1_flush+0x990/0xfd0
[ 485.922406][ T6196] ? __pfx_gfs2_ail1_flush+0x10/0x10
[ 485.922444][ T6196] empty_ail1_list+0x1b3/0x330
[ 485.922469][ T6196] ? __pfx_empty_ail1_list+0x10/0x10
[ 485.922523][ T6196] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 485.922551][ T6196] ? rt_spin_unlock+0x14f/0x200
[ 485.922579][ T6196] ? rt_spin_unlock+0x160/0x200
[ 485.922607][ T6196] __gfs2_log_flush+0x16d1/0x1dc0
[ 485.922639][ T6196] ? __pfx___gfs2_log_flush+0x10/0x10
[ 485.922674][ T6196] gfs2_log_flush+0x34/0x50
[ 485.922695][ T6196] gfs2_kill_sb+0x5c/0x430
[ 485.922743][ T6196] deactivate_locked_super+0xbc/0x130
[ 485.922776][ T6196] cleanup_mnt+0x437/0x4d0
[ 485.922802][ T6196] ? _raw_spin_unlock_irq+0x23/0x50
[ 485.922837][ T6196] task_work_run+0x1d9/0x270
[ 485.922862][ T6196] ? __pfx_task_work_run+0x10/0x10
[ 485.922891][ T6196] exit_to_user_mode_loop+0xf3/0x4d0
[ 485.922907][ T6196] ? rcu_is_watching+0x15/0xb0
[ 485.922927][ T6196] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 485.922946][ T6196] do_syscall_64+0x33e/0xf80
[ 485.922964][ T6196] ? trace_irq_disable+0x3b/0x140
[ 485.922988][ T6196] ? clear_bhb_loop+0x40/0x90
[ 485.923009][ T6196] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 485.923030][ T6196] RIP: 0033:0x7f0a5e2cc157
[ 485.923048][ T6196] Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[ 485.923062][ T6196] RSP: 002b:00007ffeda269518 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 485.923081][ T6196] RAX: 0000000000000000 RBX: 00007f0a5e35f33b RCX: 00007f0a5e2cc157
[ 485.923095][ T6196] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeda2695d0
[ 485.923106][ T6196] RBP: 00007ffeda2695d0 R08: 00007ffeda26a5d0 R09: 00000000ffffffff
[ 485.923118][ T6196] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeda26a660
[ 485.923130][ T6196] R13: 00007f0a5e35f33b R14: 00000000000768bf R15: 00007ffeda26a6a0
[ 485.923161][ T6196]
[ 485.923182][ T6196] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 486.346858][ T8725] loop4: detected capacity change from 0 to 32768
[ 486.384420][ T8725] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 486.384443][ T8725] CPU: 0 UID: 0 PID: 8725 Comm: syz.4.464 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 486.384466][ T8725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 486.384476][ T8725] Call Trace:
[ 486.384483][ T8725]
[ 486.384491][ T8725] dump_stack_lvl+0xe8/0x150
[ 486.384519][ T8725] sysfs_create_dir_ns+0x271/0x2a0
[ 486.384542][ T8725] ? __pfx_rt_mutex_slowunlock+0x10/0x10
[ 486.384569][ T8725] ? __pfx_sysfs_create_dir_ns+0x10/0x10
[ 486.384593][ T8725] ? rt_spin_unlock+0x160/0x200
[ 486.384620][ T8725] kobject_add_internal+0x631/0xd10
[ 486.384651][ T8725] kobject_init_and_add+0x12b/0x1a0
[ 486.384678][ T8725] ? __pfx_kobject_init_and_add+0x10/0x10
[ 486.384703][ T8725] ? __raw_spin_lock_init+0x45/0x100
[ 486.384740][ T8725] ? __init_swait_queue_head+0xa9/0x150
[ 486.384769][ T8725] gfs2_sys_fs_add+0x257/0x480
[ 486.384793][ T8725] ? is_dynamic_key+0x1ac/0x1c0
[ 486.384812][ T8725] ? __pfx_gfs2_sys_fs_add+0x10/0x10
[ 486.384843][ T8725] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 486.384877][ T8725] gfs2_fill_super+0x141c/0x2220
[ 486.384912][ T8725] ? __pfx_gfs2_fill_super+0x10/0x10
[ 486.384929][ T8725] ? rt_spin_unlock+0x14f/0x200
[ 486.384958][ T8725] ? sb_set_blocksize+0x11b/0x210
[ 486.384978][ T8725] ? setup_bdev_super+0x4c1/0x5b0
[ 486.385007][ T8725] get_tree_bdev_flags+0x431/0x4f0
[ 486.385033][ T8725] ? __pfx_gfs2_fill_super+0x10/0x10
[ 486.385051][ T8725] ? __pfx_get_tree_bdev_flags+0x10/0x10
[ 486.385075][ T8725] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 486.385110][ T8725] gfs2_get_tree+0x51/0x1e0
[ 486.385133][ T8725] vfs_get_tree+0x92/0x2a0
[ 486.385159][ T8725] do_new_mount+0x341/0xd30
[ 486.385179][ T8725] ? apparmor_capable+0x126/0x170
[ 486.385205][ T8725] ? __pfx_do_new_mount+0x10/0x10
[ 486.385226][ T8725] ? ns_capable+0x89/0xe0
[ 486.385254][ T8725] ? user_path_at+0xd4/0x160
[ 486.385281][ T8725] ? user_path_at+0xd4/0x160
[ 486.385307][ T8725] __se_sys_mount+0x31d/0x420
[ 486.385333][ T8725] ? __pfx___se_sys_mount+0x10/0x10
[ 486.385363][ T8725] ? __x64_sys_mount+0x20/0xc0
[ 486.385384][ T8725] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 486.385404][ T8725] do_syscall_64+0x15f/0xf80
[ 486.385424][ T8725] ? trace_irq_disable+0x3b/0x140
[ 486.385450][ T8725] ? clear_bhb_loop+0x40/0x90
[ 486.385472][ T8725] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 486.385490][ T8725] RIP: 0033:0x7efc53a8c18a
[ 486.385508][ T8725] 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
[ 486.385524][ T8725] RSP: 002b:00007efc530ede58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 486.385544][ T8725] RAX: ffffffffffffffda RBX: 00007efc530edee0 RCX: 00007efc53a8c18a
[ 486.385558][ T8725] RDX: 00002000000124c0 RSI: 0000200000012500 RDI: 00007efc530edea0
[ 486.385571][ T8725] RBP: 00002000000124c0 R08: 00007efc530edee0 R09: 0000000000000000
[ 486.385584][ T8725] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
[ 486.385595][ T8725] R13: 00007efc530edea0 R14: 0000000000012588 R15: 0000200000000000
[ 486.385622][ T8725]
[ 486.385665][ T8725] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 486.385746][ T8725] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 486.808668][ T6880] __loop_clr_fd(loop4) clearing lo_backing_file (refcnt=0x0)