draw this file system
[ 168.799039][ T6333] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 564
[ 168.814071][ T6333] CPU: 1 UID: 0 PID: 6333 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 168.814091][ T6333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 168.814100][ T6333] Call Trace:
[ 168.814106][ T6333]
[ 168.814111][ T6333] dump_stack_lvl+0x97/0xe0
[ 168.814133][ T6333] gfs2_assert_warn_i.cold+0x38/0x94
[ 168.814147][ T6333] gfs2_make_fs_ro+0x13d/0x220
[ 168.814163][ T6333] ? __pfx_autoremove_wake_function+0x10/0x10
[ 168.814184][ T6333] gfs2_put_super+0xb4/0x2d0
[ 168.814197][ T6333] ? __pfx_gfs2_put_super+0x10/0x10
[ 168.814209][ T6333] generic_shutdown_super+0x9c/0x160
[ 168.814224][ T6333] kill_block_super+0x1d/0x50
[ 168.814236][ T6333] gfs2_kill_sb+0x1b6/0x1e0
[ 168.814256][ T6333] deactivate_locked_super+0x4f/0x120
[ 168.814271][ T6333] deactivate_super+0xa4/0xc0
[ 168.814284][ T6333] cleanup_mnt+0x145/0x1f0
[ 168.814300][ T6333] task_work_run+0x95/0xf0
[ 168.814318][ T6333] exit_to_user_mode_loop+0xcf/0x440
[ 168.814335][ T6333] do_syscall_64+0x2b8/0xf80
[ 168.814357][ T6333] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 168.814371][ T6333] RIP: 0033:0x7f61a1b9c0d7
[ 168.814382][ T6333] Code: a2 c7 05 bc 64 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
[ 168.814395][ T6333] RSP: 002b:00007fff2b6a07f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 168.814407][ T6333] RAX: 0000000000000000 RBX: 00007f61a1c2d33b RCX: 00007f61a1b9c0d7
[ 168.814414][ T6333] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2b6a08b0
[ 168.814421][ T6333] RBP: 00007fff2b6a08b0 R08: 00007fff2b6a18b0 R09: 00000000ffffffff
[ 168.814430][ T6333] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff2b6a1940
[ 168.814437][ T6333] R13: 00007f61a1c2d33b R14: 0000000000027d97 R15: 00007fff2b6a1980
[ 168.814446][ T6333]
2026/01/30 11:36:33 executed programs: 96
[ 171.060255][ T7254] set_capacity_and_notify: 4 callbacks suppressed
[ 171.060271][ T7254] loop4: detected capacity change from 0 to 32768
[ 171.104884][ T7254] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 171.142058][ T7249] loop6: detected capacity change from 0 to 32768
[ 171.148649][ T7254] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 171.155892][ T7250] loop2: detected capacity change from 0 to 32768
[ 171.164357][ T7252] loop0: detected capacity change from 0 to 32768
[ 171.176615][ T7252] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 171.177553][ T7257] loop1: detected capacity change from 0 to 32768
[ 171.185964][ T7249] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 171.199342][ T7252] CPU: 0 UID: 0 PID: 7252 Comm: syz.0.99 Not tainted syzkaller #0 PREEMPT(full)
[ 171.199369][ T7252] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 171.199382][ T7252] Call Trace:
[ 171.199388][ T7252]
[ 171.199395][ T7252] dump_stack_lvl+0x97/0xe0
[ 171.199424][ T7252] sysfs_warn_dup.cold+0x1c/0x28
[ 171.199455][ T7252] sysfs_create_dir_ns+0x129/0x140
[ 171.199483][ T7252] kobject_add_internal+0x104/0x310
[ 171.199512][ T7252] kobject_init_and_add+0xb2/0xf0
[ 171.199538][ T7252] ? alloc_workqueue_noprof+0xe0/0xb60
[ 171.199567][ T7252] gfs2_sys_fs_add+0xef/0x200
[ 171.199600][ T7252] gfs2_fill_super+0x896/0x1210
[ 171.199621][ T7252] ? sb_set_blocksize+0x8c/0x150
[ 171.199647][ T7252] ? setup_bdev_super+0x19d/0x330
[ 171.199671][ T7252] ? __pfx_gfs2_fill_super+0x10/0x10
[ 171.199709][ T7252] get_tree_bdev_flags+0x1c0/0x290
[ 171.199737][ T7252] gfs2_get_tree+0x26/0xd0
[ 171.199766][ T7252] vfs_get_tree+0x30/0x120
[ 171.199784][ T7252] path_mount+0x5a9/0x1350
[ 171.199813][ T7252] ? putname+0x78/0xe0
[ 171.199840][ T7252] __x64_sys_mount+0x1a3/0x1e0
[ 171.199868][ T7252] do_syscall_64+0xa4/0xf80
[ 171.199899][ T7252] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 171.199921][ T7252] RIP: 0033:0x7f61a1b9c10a
[ 171.199937][ T7252] 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
[ 171.199958][ T7252] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 171.199978][ T7252] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 171.199991][ T7252] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 171.200006][ T7252] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 171.200019][ T7252] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 171.200032][ T7252] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 171.200048][ T7252]
[ 171.200058][ T7252] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 171.230764][ T7249] CPU: 1 UID: 0 PID: 7249 Comm: syz.6.105 Not tainted syzkaller #0 PREEMPT(full)
[ 171.230792][ T7249] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 171.230805][ T7249] Call Trace:
[ 171.230810][ T7249]
[ 171.230817][ T7249] dump_stack_lvl+0x97/0xe0
[ 171.230843][ T7249] sysfs_warn_dup.cold+0x1c/0x28
[ 171.230877][ T7249] sysfs_create_dir_ns+0x129/0x140
[ 171.230905][ T7249] kobject_add_internal+0x104/0x310
[ 171.230932][ T7249] kobject_init_and_add+0xb2/0xf0
[ 171.230958][ T7249] ? alloc_workqueue_noprof+0xe0/0xb60
[ 171.230987][ T7249] gfs2_sys_fs_add+0xef/0x200
[ 171.231017][ T7249] gfs2_fill_super+0x896/0x1210
[ 171.231038][ T7249] ? sb_set_blocksize+0x8c/0x150
[ 171.231063][ T7249] ? setup_bdev_super+0x19d/0x330
[ 171.231085][ T7249] ? __pfx_gfs2_fill_super+0x10/0x10
[ 171.231120][ T7249] get_tree_bdev_flags+0x1c0/0x290
[ 171.231148][ T7249] gfs2_get_tree+0x26/0xd0
[ 171.231179][ T7249] vfs_get_tree+0x30/0x120
[ 171.231199][ T7249] path_mount+0x5a9/0x1350
[ 171.231231][ T7249] ? putname+0x78/0xe0
[ 171.231262][ T7249] __x64_sys_mount+0x1a3/0x1e0
[ 171.231294][ T7249] do_syscall_64+0xa4/0xf80
[ 171.231328][ T7249] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 171.231350][ T7249] RIP: 0033:0x7f0c9379c10a
[ 171.231366][ T7249] 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
[ 171.231387][ T7249] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 171.231406][ T7249] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 171.231427][ T7249] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 171.231441][ T7249] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 171.231454][ T7249] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 171.231468][ T7249] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 171.231484][ T7249]
[ 171.231496][ T7249] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 171.265410][ T7250] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 171.270338][ T7252] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 171.291276][ T7250] CPU: 0 UID: 0 PID: 7250 Comm: syz.2.101 Not tainted syzkaller #0 PREEMPT(full)
[ 171.291303][ T7250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 171.291316][ T7250] Call Trace:
[ 171.291321][ T7250]
[ 171.291327][ T7250] dump_stack_lvl+0x97/0xe0
[ 171.291360][ T7250] sysfs_warn_dup.cold+0x1c/0x28
[ 171.291393][ T7250] sysfs_create_dir_ns+0x129/0x140
[ 171.291424][ T7250] kobject_add_internal+0x104/0x310
[ 171.291448][ T7250] kobject_init_and_add+0xb2/0xf0
[ 171.291475][ T7250] ? alloc_workqueue_noprof+0xe0/0xb60
[ 171.291503][ T7250] gfs2_sys_fs_add+0xef/0x200
[ 171.291535][ T7250] gfs2_fill_super+0x896/0x1210
[ 171.291555][ T7250] ? sb_set_blocksize+0x8c/0x150
[ 171.291579][ T7250] ? setup_bdev_super+0x19d/0x330
[ 171.291602][ T7250] ? __pfx_gfs2_fill_super+0x10/0x10
[ 171.291637][ T7250] get_tree_bdev_flags+0x1c0/0x290
[ 171.291663][ T7250] gfs2_get_tree+0x26/0xd0
[ 171.291695][ T7250] vfs_get_tree+0x30/0x120
[ 171.291715][ T7250] path_mount+0x5a9/0x1350
[ 171.291748][ T7250] ? putname+0x78/0xe0
[ 171.291778][ T7250] __x64_sys_mount+0x1a3/0x1e0
[ 171.291811][ T7250] do_syscall_64+0xa4/0xf80
[ 171.291845][ T7250] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 171.291866][ T7250] RIP: 0033:0x7f983719c10a
[ 171.291881][ T7250] 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
[ 171.291902][ T7250] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 171.291921][ T7250] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 171.291935][ T7250] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 171.291949][ T7250] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 171.291962][ T7250] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 171.291974][ T7250] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 171.291991][ T7250]
[ 171.291999][ T7250] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 171.298871][ T7247] loop3: detected capacity change from 0 to 32768
[ 171.319054][ T7249] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 171.329936][ T7250] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 171.351960][ T7256] loop5: detected capacity change from 0 to 32768
[ 171.370316][ T7257] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 171.400763][ T7254] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 171.458933][ T7257] CPU: 1 UID: 0 PID: 7257 Comm: syz.1.100 Not tainted syzkaller #0 PREEMPT(full)
[ 171.458972][ T7257] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 171.458985][ T7257] Call Trace:
[ 171.458991][ T7257]
[ 171.458997][ T7257] dump_stack_lvl+0x97/0xe0
[ 171.459026][ T7257] sysfs_warn_dup.cold+0x1c/0x28
[ 171.459063][ T7257] sysfs_create_dir_ns+0x129/0x140
[ 171.459090][ T7257] kobject_add_internal+0x104/0x310
[ 171.459118][ T7257] kobject_init_and_add+0xb2/0xf0
[ 171.459145][ T7257] ? alloc_workqueue_noprof+0xe0/0xb60
[ 171.459173][ T7257] gfs2_sys_fs_add+0xef/0x200
[ 171.459205][ T7257] gfs2_fill_super+0x896/0x1210
[ 171.459226][ T7257] ? sb_set_blocksize+0x8c/0x150
[ 171.459251][ T7257] ? setup_bdev_super+0x19d/0x330
[ 171.459273][ T7257] ? __pfx_gfs2_fill_super+0x10/0x10
[ 171.459308][ T7257] get_tree_bdev_flags+0x1c0/0x290
[ 171.459335][ T7257] gfs2_get_tree+0x26/0xd0
[ 171.459366][ T7257] vfs_get_tree+0x30/0x120
[ 171.459386][ T7257] path_mount+0x5a9/0x1350
[ 171.459426][ T7257] ? putname+0x78/0xe0
[ 171.459457][ T7257] __x64_sys_mount+0x1a3/0x1e0
[ 171.459490][ T7257] do_syscall_64+0xa4/0xf80
[ 171.459524][ T7257] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 171.459546][ T7257] RIP: 0033:0x7f129df9c10a
[ 171.459561][ T7257] 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
[ 171.459583][ T7257] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 171.459603][ T7257] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 171.459617][ T7257] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 171.459631][ T7257] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 171.459645][ T7257] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 171.459658][ T7257] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 171.459674][ T7257]
[ 171.459696][ T7257] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 171.503209][ T797] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 171.507689][ T7257] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 171.511751][ T797] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 171.514984][ T7247] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 171.533799][ T797] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 22ms
[ 171.537244][ T7247] CPU: 1 UID: 0 PID: 7247 Comm: syz.3.102 Not tainted syzkaller #0 PREEMPT(full)
[ 171.537272][ T7247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 171.537285][ T7247] Call Trace:
[ 171.537291][ T7247]
[ 171.537297][ T7247] dump_stack_lvl+0x97/0xe0
[ 171.537334][ T7247] sysfs_warn_dup.cold+0x1c/0x28
[ 171.537368][ T7247] sysfs_create_dir_ns+0x129/0x140
[ 171.537397][ T7247] kobject_add_internal+0x104/0x310
[ 171.537425][ T7247] kobject_init_and_add+0xb2/0xf0
[ 171.537452][ T7247] ? alloc_workqueue_noprof+0xe0/0xb60
[ 171.537481][ T7247] gfs2_sys_fs_add+0xef/0x200
[ 171.537517][ T7247] gfs2_fill_super+0x896/0x1210
[ 171.537538][ T7247] ? sb_set_blocksize+0x8c/0x150
[ 171.537564][ T7247] ? setup_bdev_super+0x19d/0x330
[ 171.537587][ T7247] ? __pfx_gfs2_fill_super+0x10/0x10
[ 171.537624][ T7247] get_tree_bdev_flags+0x1c0/0x290
[ 171.537655][ T7247] gfs2_get_tree+0x26/0xd0
[ 171.537688][ T7247] vfs_get_tree+0x30/0x120
[ 171.537708][ T7247] path_mount+0x5a9/0x1350
[ 171.537742][ T7247] ? putname+0x78/0xe0
[ 171.537774][ T7247] __x64_sys_mount+0x1a3/0x1e0
[ 171.537808][ T7247] do_syscall_64+0xa4/0xf80
[ 171.537843][ T7247] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 171.537865][ T7247] RIP: 0033:0x7fc45b79c10a
[ 171.537882][ T7247] 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
[ 171.537903][ T7247] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 171.537923][ T7247] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 171.537938][ T7247] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 171.537953][ T7247] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 171.537967][ T7247] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 171.537981][ T7247] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 171.537999][ T7247]
[ 171.538009][ T7247] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 171.557247][ T797] gfs2: fsid=syz:syz.0: jid=0: Done
[ 171.567027][ T7247] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 171.574531][ T7254] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 171.582295][ T7256] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 172.081039][ T7254] gfs2: fsid=syz:syz.0: fatal: assertion "!atomic_read(&gl->gl_ail_count)" failed - function = inode_go_inval, file = fs/gfs2/glops.c, line = 362
[ 172.122201][ T7256] CPU: 1 UID: 0 PID: 7256 Comm: syz.5.104 Not tainted syzkaller #0 PREEMPT(full)
[ 172.122229][ T7256] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 172.122242][ T7256] Call Trace:
[ 172.122248][ T7256]
[ 172.122254][ T7256] dump_stack_lvl+0x97/0xe0
[ 172.122288][ T7256] sysfs_warn_dup.cold+0x1c/0x28
[ 172.122322][ T7256] sysfs_create_dir_ns+0x129/0x140
[ 172.122350][ T7256] kobject_add_internal+0x104/0x310
[ 172.122377][ T7256] kobject_init_and_add+0xb2/0xf0
[ 172.122404][ T7256] ? alloc_workqueue_noprof+0xe0/0xb60
[ 172.122432][ T7256] gfs2_sys_fs_add+0xef/0x200
[ 172.122474][ T7256] gfs2_fill_super+0x896/0x1210
[ 172.122495][ T7256] ? sb_set_blocksize+0x8c/0x150
[ 172.122520][ T7256] ? setup_bdev_super+0x19d/0x330
[ 172.122543][ T7256] ? __pfx_gfs2_fill_super+0x10/0x10
[ 172.122577][ T7256] get_tree_bdev_flags+0x1c0/0x290
[ 172.122604][ T7256] gfs2_get_tree+0x26/0xd0
[ 172.122647][ T7256] vfs_get_tree+0x30/0x120
[ 172.122668][ T7256] path_mount+0x5a9/0x1350
[ 172.122701][ T7256] ? putname+0x78/0xe0
[ 172.122732][ T7256] __x64_sys_mount+0x1a3/0x1e0
[ 172.122764][ T7256] do_syscall_64+0xa4/0xf80
[ 172.122798][ T7256] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 172.122820][ T7256] RIP: 0033:0x7f37bff9c10a
[ 172.122836][ T7256] 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
[ 172.122858][ T7256] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 172.122877][ T7256] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 172.122891][ T7256] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 172.122906][ T7256] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 172.122919][ T7256] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 172.122932][ T7256] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 172.122949][ T7256]
[ 172.122958][ T7256] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 172.167731][ T7254] CPU: 0 UID: 0 PID: 7254 Comm: syz.4.103 Not tainted syzkaller #0 PREEMPT(full)
[ 172.167758][ T7254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 172.167770][ T7254] Call Trace:
[ 172.167777][ T7254]
[ 172.167784][ T7254] dump_stack_lvl+0x97/0xe0
[ 172.167811][ T7254] gfs2_withdraw.cold+0xa/0x77
[ 172.167833][ T7254] gfs2_assert_withdraw_i.cold+0x2c/0x36
[ 172.167854][ T7254] inode_go_inval+0x1df/0x1f0
[ 172.167888][ T7254] gfs2_make_fs_rw+0x34/0xe0
[ 172.167909][ T7254] gfs2_fill_super+0xfbb/0x1210
[ 172.167929][ T7254] ? gfs2_fill_super+0xa23/0x1210
[ 172.167948][ T7254] ? setup_bdev_super+0x19d/0x330
[ 172.167970][ T7254] ? __pfx_gfs2_fill_super+0x10/0x10
[ 172.168005][ T7254] get_tree_bdev_flags+0x1c0/0x290
[ 172.168052][ T7254] gfs2_get_tree+0x26/0xd0
[ 172.168084][ T7254] vfs_get_tree+0x30/0x120
[ 172.168105][ T7254] path_mount+0x5a9/0x1350
[ 172.168137][ T7254] ? putname+0x78/0xe0
[ 172.168167][ T7254] __x64_sys_mount+0x1a3/0x1e0
[ 172.168200][ T7254] do_syscall_64+0xa4/0xf80
[ 172.168234][ T7254] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 172.168256][ T7254] RIP: 0033:0x7f72ded9c10a
[ 172.168271][ T7254] 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
[ 172.168292][ T7254] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 172.168311][ T7254] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 172.168325][ T7254] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 172.168339][ T7254] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 172.168352][ T7254] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 172.168365][ T7254] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 172.168382][ T7254]
[ 172.168391][ T7254] CPU: 0 UID: 0 PID: 7254 Comm: syz.4.103 Not tainted syzkaller #0 PREEMPT(full)
[ 172.168416][ T7254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 172.168427][ T7254] Call Trace:
[ 172.168432][ T7254]
[ 172.168438][ T7254] dump_stack_lvl+0x97/0xe0
[ 172.168461][ T7254] gfs2_assert_withdraw_i.cold+0x31/0x36
[ 172.168482][ T7254] inode_go_inval+0x1df/0x1f0
[ 172.168514][ T7254] gfs2_make_fs_rw+0x34/0xe0
[ 172.168534][ T7254] gfs2_fill_super+0xfbb/0x1210
[ 172.168553][ T7254] ? gfs2_fill_super+0xa23/0x1210
[ 172.168573][ T7254] ? setup_bdev_super+0x19d/0x330
[ 172.168595][ T7254] ? __pfx_gfs2_fill_super+0x10/0x10
[ 172.168629][ T7254] get_tree_bdev_flags+0x1c0/0x290
[ 172.168655][ T7254] gfs2_get_tree+0x26/0xd0
[ 172.168690][ T7254] vfs_get_tree+0x30/0x120
[ 172.168709][ T7254] path_mount+0x5a9/0x1350
[ 172.168740][ T7254] ? putname+0x78/0xe0
[ 172.168769][ T7254] __x64_sys_mount+0x1a3/0x1e0
[ 172.168801][ T7254] do_syscall_64+0xa4/0xf80
[ 172.168834][ T7254] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 172.168855][ T7254] RIP: 0033:0x7f72ded9c10a
[ 172.168869][ T7254] 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
[ 172.168889][ T7254] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 172.168907][ T7254] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 172.168920][ T7254] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 172.168933][ T7254] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 172.168947][ T7254] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 172.168960][ T7254] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 172.168976][ T7254]
[ 172.198894][ T7254] gfs2: fsid=syz:syz.0: can't make FS RW: -5
[ 172.231383][ T7256] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 172.351786][ T7281] loop6: detected capacity change from 0 to 32768
[ 172.512115][ T7279] loop2: detected capacity change from 0 to 32768
[ 172.649111][ T7281] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 172.745601][ T7283] loop0: detected capacity change from 0 to 32768
[ 172.887107][ T7279] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 172.898901][ T7281] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 172.909364][ T7279] CPU: 0 UID: 0 PID: 7279 Comm: syz.2.106 Not tainted syzkaller #0 PREEMPT(full)
[ 172.909392][ T7279] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 172.909404][ T7279] Call Trace:
[ 172.909410][ T7279]
[ 172.909417][ T7279] dump_stack_lvl+0x97/0xe0
[ 172.909444][ T7279] sysfs_warn_dup.cold+0x1c/0x28
[ 172.909477][ T7279] sysfs_create_dir_ns+0x129/0x140
[ 172.909505][ T7279] kobject_add_internal+0x104/0x310
[ 172.909531][ T7279] kobject_init_and_add+0xb2/0xf0
[ 172.909559][ T7279] ? alloc_workqueue_noprof+0xe0/0xb60
[ 172.909586][ T7279] gfs2_sys_fs_add+0xef/0x200
[ 172.909618][ T7279] gfs2_fill_super+0x896/0x1210
[ 172.909638][ T7279] ? sb_set_blocksize+0x8c/0x150
[ 172.909663][ T7279] ? setup_bdev_super+0x19d/0x330
[ 172.909684][ T7279] ? __pfx_gfs2_fill_super+0x10/0x10
[ 172.909719][ T7279] get_tree_bdev_flags+0x1c0/0x290
[ 172.909746][ T7279] gfs2_get_tree+0x26/0xd0
[ 172.909778][ T7279] vfs_get_tree+0x30/0x120
[ 172.909797][ T7279] path_mount+0x5a9/0x1350
[ 172.909829][ T7279] ? putname+0x78/0xe0
[ 172.909859][ T7279] __x64_sys_mount+0x1a3/0x1e0
[ 172.909891][ T7279] do_syscall_64+0xa4/0xf80
[ 172.909926][ T7279] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 172.909947][ T7279] RIP: 0033:0x7f983719c10a
[ 172.909970][ T7279] 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
[ 172.909990][ T7279] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 172.910009][ T7279] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 172.910023][ T7279] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 172.910036][ T7279] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 172.910049][ T7279] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 172.910062][ T7279] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 172.910078][ T7279]
[ 172.910087][ T7279] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 173.058856][ T7287] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 173.119112][ T7286] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 173.121178][ T7287] CPU: 1 UID: 0 PID: 7287 Comm: syz.3.110 Not tainted syzkaller #0 PREEMPT(full)
[ 173.121205][ T7287] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 173.121217][ T7287] Call Trace:
[ 173.121223][ T7287]
[ 173.121230][ T7287] dump_stack_lvl+0x97/0xe0
[ 173.121257][ T7287] sysfs_warn_dup.cold+0x1c/0x28
[ 173.121290][ T7287] sysfs_create_dir_ns+0x129/0x140
[ 173.121317][ T7287] kobject_add_internal+0x104/0x310
[ 173.121343][ T7287] kobject_init_and_add+0xb2/0xf0
[ 173.121369][ T7287] ? alloc_workqueue_noprof+0xe0/0xb60
[ 173.121397][ T7287] gfs2_sys_fs_add+0xef/0x200
[ 173.121426][ T7287] gfs2_fill_super+0x896/0x1210
[ 173.121446][ T7287] ? sb_set_blocksize+0x8c/0x150
[ 173.121472][ T7287] ? setup_bdev_super+0x19d/0x330
[ 173.121494][ T7287] ? __pfx_gfs2_fill_super+0x10/0x10
[ 173.121538][ T7287] get_tree_bdev_flags+0x1c0/0x290
[ 173.121565][ T7287] gfs2_get_tree+0x26/0xd0
[ 173.121596][ T7287] vfs_get_tree+0x30/0x120
[ 173.121616][ T7287] path_mount+0x5a9/0x1350
[ 173.121647][ T7287] ? putname+0x78/0xe0
[ 173.121679][ T7287] __x64_sys_mount+0x1a3/0x1e0
[ 173.121711][ T7287] do_syscall_64+0xa4/0xf80
[ 173.121744][ T7287] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 173.121766][ T7287] RIP: 0033:0x7fc45b79c10a
[ 173.121781][ T7287] 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
[ 173.121801][ T7287] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 173.121820][ T7287] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 173.121835][ T7287] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 173.121848][ T7287] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 173.121862][ T7287] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 173.121875][ T7287] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 173.121891][ T7287]
[ 173.121901][ T7287] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 173.156280][ T7286] CPU: 0 UID: 0 PID: 7286 Comm: syz.1.109 Not tainted syzkaller #0 PREEMPT(full)
[ 173.156310][ T7286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 173.156323][ T7286] Call Trace:
[ 173.156330][ T7286]
[ 173.156336][ T7286] dump_stack_lvl+0x97/0xe0
[ 173.156364][ T7286] sysfs_warn_dup.cold+0x1c/0x28
[ 173.156396][ T7286] sysfs_create_dir_ns+0x129/0x140
[ 173.156426][ T7286] kobject_add_internal+0x104/0x310
[ 173.156453][ T7286] kobject_init_and_add+0xb2/0xf0
[ 173.156480][ T7286] ? alloc_workqueue_noprof+0xe0/0xb60
[ 173.156508][ T7286] gfs2_sys_fs_add+0xef/0x200
[ 173.156540][ T7286] gfs2_fill_super+0x896/0x1210
[ 173.156560][ T7286] ? sb_set_blocksize+0x8c/0x150
[ 173.156585][ T7286] ? setup_bdev_super+0x19d/0x330
[ 173.156608][ T7286] ? __pfx_gfs2_fill_super+0x10/0x10
[ 173.156642][ T7286] get_tree_bdev_flags+0x1c0/0x290
[ 173.156669][ T7286] gfs2_get_tree+0x26/0xd0
[ 173.156702][ T7286] vfs_get_tree+0x30/0x120
[ 173.156722][ T7286] path_mount+0x5a9/0x1350
[ 173.156755][ T7286] ? putname+0x78/0xe0
[ 173.156786][ T7286] __x64_sys_mount+0x1a3/0x1e0
[ 173.156818][ T7286] do_syscall_64+0xa4/0xf80
[ 173.156852][ T7286] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 173.156874][ T7286] RIP: 0033:0x7f129df9c10a
[ 173.156890][ T7286] 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
[ 173.156910][ T7286] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 173.156929][ T7286] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 173.156943][ T7286] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 173.156956][ T7286] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 173.156970][ T7286] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 173.156983][ T7286] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 173.156999][ T7286]
[ 173.157008][ T7286] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 173.159619][ T7287] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 173.169705][ T7279] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 173.228903][ T7286] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 173.235797][ T7283] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 173.301549][ T7281] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 173.306180][ T7283] CPU: 0 UID: 0 PID: 7283 Comm: syz.0.108 Not tainted syzkaller #0 PREEMPT(full)
[ 173.306205][ T7283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 173.306217][ T7283] Call Trace:
[ 173.306223][ T7283]
[ 173.306230][ T7283] dump_stack_lvl+0x97/0xe0
[ 173.306257][ T7283] sysfs_warn_dup.cold+0x1c/0x28
[ 173.306289][ T7283] sysfs_create_dir_ns+0x129/0x140
[ 173.306317][ T7283] kobject_add_internal+0x104/0x310
[ 173.306344][ T7283] kobject_init_and_add+0xb2/0xf0
[ 173.306371][ T7283] ? alloc_workqueue_noprof+0xe0/0xb60
[ 173.306398][ T7283] gfs2_sys_fs_add+0xef/0x200
[ 173.306428][ T7283] gfs2_fill_super+0x896/0x1210
[ 173.306448][ T7283] ? sb_set_blocksize+0x8c/0x150
[ 173.306473][ T7283] ? setup_bdev_super+0x19d/0x330
[ 173.306495][ T7283] ? __pfx_gfs2_fill_super+0x10/0x10
[ 173.306529][ T7283] get_tree_bdev_flags+0x1c0/0x290
[ 173.306556][ T7283] gfs2_get_tree+0x26/0xd0
[ 173.306588][ T7283] vfs_get_tree+0x30/0x120
[ 173.306607][ T7283] path_mount+0x5a9/0x1350
[ 173.306639][ T7283] ? putname+0x78/0xe0
[ 173.306670][ T7283] __x64_sys_mount+0x1a3/0x1e0
[ 173.306703][ T7283] do_syscall_64+0xa4/0xf80
[ 173.306736][ T7283] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 173.306758][ T7283] RIP: 0033:0x7f61a1b9c10a
[ 173.306774][ T7283] 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
[ 173.306794][ T7283] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 173.306813][ T7283] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 173.306827][ T7283] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 173.306841][ T7283] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 173.306853][ T7283] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 173.306866][ T7283] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 173.306882][ T7283]
[ 173.306893][ T7283] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 173.511340][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 173.570349][ T7283] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 173.641018][ T7292] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 173.750641][ T7301] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 173.754477][ T7292] CPU: 1 UID: 0 PID: 7292 Comm: syz.4.111 Not tainted syzkaller #0 PREEMPT(full)
[ 173.754504][ T7292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 173.754516][ T7292] Call Trace:
[ 173.754523][ T7292]
[ 173.754534][ T7292] dump_stack_lvl+0x97/0xe0
[ 173.754562][ T7292] sysfs_warn_dup.cold+0x1c/0x28
[ 173.754594][ T7292] sysfs_create_dir_ns+0x129/0x140
[ 173.754621][ T7292] kobject_add_internal+0x104/0x310
[ 173.754647][ T7292] kobject_init_and_add+0xb2/0xf0
[ 173.754673][ T7292] ? alloc_workqueue_noprof+0xe0/0xb60
[ 173.754701][ T7292] gfs2_sys_fs_add+0xef/0x200
[ 173.754731][ T7292] gfs2_fill_super+0x896/0x1210
[ 173.754751][ T7292] ? sb_set_blocksize+0x8c/0x150
[ 173.754776][ T7292] ? setup_bdev_super+0x19d/0x330
[ 173.754798][ T7292] ? __pfx_gfs2_fill_super+0x10/0x10
[ 173.754832][ T7292] get_tree_bdev_flags+0x1c0/0x290
[ 173.754859][ T7292] gfs2_get_tree+0x26/0xd0
[ 173.754898][ T7292] vfs_get_tree+0x30/0x120
[ 173.754917][ T7292] path_mount+0x5a9/0x1350
[ 173.754949][ T7292] ? putname+0x78/0xe0
[ 173.754980][ T7292] __x64_sys_mount+0x1a3/0x1e0
[ 173.755012][ T7292] do_syscall_64+0xa4/0xf80
[ 173.755046][ T7292] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 173.755068][ T7292] RIP: 0033:0x7f72ded9c10a
[ 173.755084][ T7292] 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
[ 173.755105][ T7292] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 173.755128][ T7292] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 173.755142][ T7292] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 173.755156][ T7292] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 173.755169][ T7292] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 173.755183][ T7292] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 173.755199][ T7292]
[ 173.755238][ T7292] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 173.776161][ T7301] CPU: 0 UID: 0 PID: 7301 Comm: syz.5.112 Not tainted syzkaller #0 PREEMPT(full)
[ 173.776189][ T7301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 173.776202][ T7301] Call Trace:
[ 173.776207][ T7301]
[ 173.776213][ T7301] dump_stack_lvl+0x97/0xe0
[ 173.776241][ T7301] sysfs_warn_dup.cold+0x1c/0x28
[ 173.776274][ T7301] sysfs_create_dir_ns+0x129/0x140
[ 173.776302][ T7301] kobject_add_internal+0x104/0x310
[ 173.776329][ T7301] kobject_init_and_add+0xb2/0xf0
[ 173.776356][ T7301] ? alloc_workqueue_noprof+0xe0/0xb60
[ 173.776385][ T7301] gfs2_sys_fs_add+0xef/0x200
[ 173.776416][ T7301] gfs2_fill_super+0x896/0x1210
[ 173.776437][ T7301] ? sb_set_blocksize+0x8c/0x150
[ 173.776462][ T7301] ? setup_bdev_super+0x19d/0x330
[ 173.776485][ T7301] ? __pfx_gfs2_fill_super+0x10/0x10
[ 173.776520][ T7301] get_tree_bdev_flags+0x1c0/0x290
[ 173.776547][ T7301] gfs2_get_tree+0x26/0xd0
[ 173.776579][ T7301] vfs_get_tree+0x30/0x120
[ 173.776599][ T7301] path_mount+0x5a9/0x1350
[ 173.776632][ T7301] ? putname+0x78/0xe0
[ 173.776664][ T7301] __x64_sys_mount+0x1a3/0x1e0
[ 173.776697][ T7301] do_syscall_64+0xa4/0xf80
[ 173.776731][ T7301] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 173.776753][ T7301] RIP: 0033:0x7f37bff9c10a
[ 173.776768][ T7301] 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
[ 173.776790][ T7301] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 173.776809][ T7301] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 173.776824][ T7301] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 173.776838][ T7301] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 173.776851][ T7301] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 173.776864][ T7301] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 173.776880][ T7301]
[ 173.776888][ T7301] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 173.778296][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 173.783925][ T7301] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 173.837668][ T7292] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 174.432947][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 654ms
[ 174.441987][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 174.447420][ T7281] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 174.456483][ T54] gfs2: fsid=syz:syz.0: fatal: assertion "!atomic_read(&gl->gl_ail_count)" failed - function = inode_go_inval, file = fs/gfs2/glops.c, line = 362
[ 174.472217][ T54] CPU: 0 UID: 0 PID: 54 Comm: kworker/0:1H Not tainted syzkaller #0 PREEMPT(full)
[ 174.472245][ T54] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 174.472259][ T54] Workqueue: gfs2-glock/syz:syz glock_work_func
[ 174.472298][ T54] Call Trace:
[ 174.472303][ T54]
[ 174.472311][ T54] dump_stack_lvl+0x97/0xe0
[ 174.472337][ T54] gfs2_withdraw.cold+0xa/0x77
[ 174.472358][ T54] gfs2_assert_withdraw_i.cold+0x2c/0x36
[ 174.472380][ T54] ? __pfx_inode_go_inval+0x10/0x10
[ 174.472414][ T54] inode_go_inval+0x1df/0x1f0
[ 174.472448][ T54] do_xmote+0x119/0x2d0
[ 174.472479][ T54] run_queue+0x28b/0x310
[ 174.472509][ T54] glock_work_func+0xac/0x280
[ 174.472540][ T54] ? pwq_dec_nr_in_flight+0x85/0x570
[ 174.472577][ T54] process_one_work+0x26c/0x590
[ 174.472611][ T54] worker_thread+0x2b1/0x4f0
[ 174.472644][ T54] ? __pfx_worker_thread+0x10/0x10
[ 174.472679][ T54] kthread+0x161/0x310
[ 174.472702][ T54] ? __pfx_kthread+0x10/0x10
[ 174.472725][ T54] ? __pfx_kthread+0x10/0x10
[ 174.472750][ T54] ret_from_fork+0x23c/0x320
[ 174.472776][ T54] ? __pfx_kthread+0x10/0x10
[ 174.472894][ T54] ret_from_fork_asm+0x1a/0x30
[ 174.472926][ T54]
[ 174.472945][ T54] CPU: 0 UID: 0 PID: 54 Comm: kworker/0:1H Not tainted syzkaller #0 PREEMPT(full)
[ 174.472971][ T54] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 174.472984][ T54] Workqueue: gfs2-glock/syz:syz glock_work_func
[ 174.473015][ T54] Call Trace:
[ 174.473020][ T54]
[ 174.473027][ T54] dump_stack_lvl+0x97/0xe0
[ 174.473050][ T54] gfs2_assert_withdraw_i.cold+0x31/0x36
[ 174.473068][ T54] ? __pfx_inode_go_inval+0x10/0x10
[ 174.473097][ T54] inode_go_inval+0x1df/0x1f0
[ 174.473130][ T54] do_xmote+0x119/0x2d0
[ 174.473160][ T54] run_queue+0x28b/0x310
[ 174.473190][ T54] glock_work_func+0xac/0x280
[ 174.473221][ T54] ? pwq_dec_nr_in_flight+0x85/0x570
[ 174.473256][ T54] process_one_work+0x26c/0x590
[ 174.473290][ T54] worker_thread+0x2b1/0x4f0
[ 174.473322][ T54] ? __pfx_worker_thread+0x10/0x10
[ 174.473356][ T54] kthread+0x161/0x310
[ 174.473379][ T54] ? __pfx_kthread+0x10/0x10
[ 174.473403][ T54] ? __pfx_kthread+0x10/0x10
[ 174.473428][ T54] ret_from_fork+0x23c/0x320
[ 174.473453][ T54] ? __pfx_kthread+0x10/0x10
[ 174.473478][ T54] ret_from_fork_asm+0x1a/0x30
[ 174.473510][ T54]
[ 174.719504][ T7281] gfs2: fsid=syz:syz.0: can't lock the freeze glock: -5
2026/01/30 11:36:44 executed programs: 110
[ 182.305089][ T7319] set_capacity_and_notify: 4 callbacks suppressed
[ 182.305111][ T7319] loop1: detected capacity change from 0 to 32768
[ 182.323835][ T7320] loop2: detected capacity change from 0 to 32768
[ 182.356173][ T7319] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 182.367033][ T7320] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 182.395535][ T7319] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 182.424145][ T7318] loop5: detected capacity change from 0 to 32768
[ 182.432608][ T7313] loop4: detected capacity change from 0 to 32768
[ 182.440823][ T7320] CPU: 0 UID: 0 PID: 7320 Comm: syz.2.115 Not tainted syzkaller #0 PREEMPT(full)
[ 182.440848][ T7320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 182.440859][ T7320] Call Trace:
[ 182.440864][ T7320]
[ 182.440869][ T7320] dump_stack_lvl+0x97/0xe0
[ 182.440895][ T7320] sysfs_warn_dup.cold+0x1c/0x28
[ 182.440925][ T7320] sysfs_create_dir_ns+0x129/0x140
[ 182.440953][ T7320] kobject_add_internal+0x104/0x310
[ 182.440981][ T7320] kobject_init_and_add+0xb2/0xf0
[ 182.441006][ T7320] ? alloc_workqueue_noprof+0xe0/0xb60
[ 182.441033][ T7320] gfs2_sys_fs_add+0xef/0x200
[ 182.441064][ T7320] gfs2_fill_super+0x896/0x1210
[ 182.441083][ T7320] ? sb_set_blocksize+0x8c/0x150
[ 182.441106][ T7320] ? setup_bdev_super+0x19d/0x330
[ 182.441127][ T7320] ? __pfx_gfs2_fill_super+0x10/0x10
[ 182.441159][ T7320] get_tree_bdev_flags+0x1c0/0x290
[ 182.441185][ T7320] gfs2_get_tree+0x26/0xd0
[ 182.441217][ T7320] vfs_get_tree+0x30/0x120
[ 182.441237][ T7320] path_mount+0x5a9/0x1350
[ 182.441266][ T7320] ? putname+0x78/0xe0
[ 182.441296][ T7320] __x64_sys_mount+0x1a3/0x1e0
[ 182.441328][ T7320] do_syscall_64+0xa4/0xf80
[ 182.441366][ T7320] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 182.441392][ T7320] RIP: 0033:0x7f983719c10a
[ 182.441409][ T7320] 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
[ 182.441424][ T7320] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 182.441436][ T7320] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 182.441444][ T7320] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 182.441452][ T7320] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 182.441459][ T7320] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 182.441466][ T7320] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 182.441475][ T7320]
[ 182.441483][ T7320] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 182.474814][ T7316] loop0: detected capacity change from 0 to 32768
[ 182.501671][ T7317] loop6: detected capacity change from 0 to 32768
[ 182.529938][ T7320] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 182.538297][ T7319] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 182.578311][ T7321] loop3: detected capacity change from 0 to 32768
[ 182.608884][ T7318] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 182.622563][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 182.629825][ T7318] CPU: 0 UID: 0 PID: 7318 Comm: syz.5.118 Not tainted syzkaller #0 PREEMPT(full)
[ 182.629852][ T7318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 182.629865][ T7318] Call Trace:
[ 182.629870][ T7318]
[ 182.629877][ T7318] dump_stack_lvl+0x97/0xe0
[ 182.629904][ T7318] sysfs_warn_dup.cold+0x1c/0x28
[ 182.629937][ T7318] sysfs_create_dir_ns+0x129/0x140
[ 182.629965][ T7318] kobject_add_internal+0x104/0x310
[ 182.629992][ T7318] kobject_init_and_add+0xb2/0xf0
[ 182.630019][ T7318] ? alloc_workqueue_noprof+0xe0/0xb60
[ 182.630048][ T7318] gfs2_sys_fs_add+0xef/0x200
[ 182.630078][ T7318] gfs2_fill_super+0x896/0x1210
[ 182.630098][ T7318] ? sb_set_blocksize+0x8c/0x150
[ 182.630123][ T7318] ? setup_bdev_super+0x19d/0x330
[ 182.630145][ T7318] ? __pfx_gfs2_fill_super+0x10/0x10
[ 182.630181][ T7318] get_tree_bdev_flags+0x1c0/0x290
[ 182.630207][ T7318] gfs2_get_tree+0x26/0xd0
[ 182.630240][ T7318] vfs_get_tree+0x30/0x120
[ 182.630260][ T7318] path_mount+0x5a9/0x1350
[ 182.630291][ T7318] ? putname+0x78/0xe0
[ 182.630322][ T7318] __x64_sys_mount+0x1a3/0x1e0
[ 182.630354][ T7318] do_syscall_64+0xa4/0xf80
[ 182.630396][ T7318] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 182.630418][ T7318] RIP: 0033:0x7f37bff9c10a
[ 182.630434][ T7318] 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
[ 182.630455][ T7318] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 182.630474][ T7318] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 182.630488][ T7318] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 182.630502][ T7318] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 182.630515][ T7318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 182.630529][ T7318] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 182.630545][ T7318]
[ 182.630555][ T7318] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 182.637241][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 182.641325][ T7318] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 182.714695][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 77ms
[ 182.748795][ T7313] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 182.751196][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 182.756300][ T7313] CPU: 0 UID: 0 PID: 7313 Comm: syz.4.117 Not tainted syzkaller #0 PREEMPT(full)
[ 182.756327][ T7313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 182.756340][ T7313] Call Trace:
[ 182.756345][ T7313]
[ 182.756352][ T7313] dump_stack_lvl+0x97/0xe0
[ 182.756379][ T7313] sysfs_warn_dup.cold+0x1c/0x28
[ 182.756410][ T7313] sysfs_create_dir_ns+0x129/0x140
[ 182.756437][ T7313] kobject_add_internal+0x104/0x310
[ 182.756463][ T7313] kobject_init_and_add+0xb2/0xf0
[ 182.756490][ T7313] ? alloc_workqueue_noprof+0xe0/0xb60
[ 182.756517][ T7313] gfs2_sys_fs_add+0xef/0x200
[ 182.756548][ T7313] gfs2_fill_super+0x896/0x1210
[ 182.756567][ T7313] ? sb_set_blocksize+0x8c/0x150
[ 182.756592][ T7313] ? setup_bdev_super+0x19d/0x330
[ 182.756614][ T7313] ? __pfx_gfs2_fill_super+0x10/0x10
[ 182.756648][ T7313] get_tree_bdev_flags+0x1c0/0x290
[ 182.756675][ T7313] gfs2_get_tree+0x26/0xd0
[ 182.756707][ T7313] vfs_get_tree+0x30/0x120
[ 182.756727][ T7313] path_mount+0x5a9/0x1350
[ 182.756759][ T7313] ? putname+0x78/0xe0
[ 182.756789][ T7313] __x64_sys_mount+0x1a3/0x1e0
[ 182.756826][ T7313] do_syscall_64+0xa4/0xf80
[ 182.756859][ T7313] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 182.756881][ T7313] RIP: 0033:0x7f72ded9c10a
[ 182.756896][ T7313] 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
[ 182.756916][ T7313] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 182.756935][ T7313] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 182.756949][ T7313] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 182.756962][ T7313] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 182.756975][ T7313] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 182.756988][ T7313] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 182.757004][ T7313]
[ 182.757014][ T7313] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 182.761602][ T7319] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 182.767511][ T7313] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 182.770632][ T7316] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 182.809771][ T7317] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 182.814866][ T7316] CPU: 1 UID: 0 PID: 7316 Comm: syz.0.113 Not tainted syzkaller #0 PREEMPT(full)
[ 182.814892][ T7316] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 182.814906][ T7316] Call Trace:
[ 182.814912][ T7316]
[ 182.814919][ T7316] dump_stack_lvl+0x97/0xe0
[ 182.814947][ T7316] sysfs_warn_dup.cold+0x1c/0x28
[ 182.814978][ T7316] sysfs_create_dir_ns+0x129/0x140
[ 182.815005][ T7316] kobject_add_internal+0x104/0x310
[ 182.815031][ T7316] kobject_init_and_add+0xb2/0xf0
[ 182.815057][ T7316] ? alloc_workqueue_noprof+0xe0/0xb60
[ 182.815085][ T7316] gfs2_sys_fs_add+0xef/0x200
[ 182.815131][ T7316] gfs2_fill_super+0x896/0x1210
[ 182.815151][ T7316] ? sb_set_blocksize+0x8c/0x150
[ 182.815176][ T7316] ? setup_bdev_super+0x19d/0x330
[ 182.815198][ T7316] ? __pfx_gfs2_fill_super+0x10/0x10
[ 182.815232][ T7316] get_tree_bdev_flags+0x1c0/0x290
[ 182.815259][ T7316] gfs2_get_tree+0x26/0xd0
[ 182.815290][ T7316] vfs_get_tree+0x30/0x120
[ 182.815310][ T7316] path_mount+0x5a9/0x1350
[ 182.815342][ T7316] ? putname+0x78/0xe0
[ 182.815372][ T7316] __x64_sys_mount+0x1a3/0x1e0
[ 182.815404][ T7316] do_syscall_64+0xa4/0xf80
[ 182.815437][ T7316] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 182.815459][ T7316] RIP: 0033:0x7f61a1b9c10a
[ 182.815475][ T7316] 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
[ 182.815495][ T7316] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 182.815514][ T7316] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 182.815528][ T7316] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 182.815541][ T7316] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 182.815554][ T7316] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 182.815567][ T7316] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 182.815583][ T7316]
[ 182.815594][ T7316] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 182.821067][ T7317] CPU: 0 UID: 0 PID: 7317 Comm: syz.6.119 Not tainted syzkaller #0 PREEMPT(full)
[ 182.821093][ T7317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 182.821104][ T7317] Call Trace:
[ 182.821110][ T7317]
[ 182.821116][ T7317] dump_stack_lvl+0x97/0xe0
[ 182.821143][ T7317] sysfs_warn_dup.cold+0x1c/0x28
[ 182.821176][ T7317] sysfs_create_dir_ns+0x129/0x140
[ 182.821203][ T7317] kobject_add_internal+0x104/0x310
[ 182.821230][ T7317] kobject_init_and_add+0xb2/0xf0
[ 182.821257][ T7317] ? alloc_workqueue_noprof+0xe0/0xb60
[ 182.821285][ T7317] gfs2_sys_fs_add+0xef/0x200
[ 182.821315][ T7317] gfs2_fill_super+0x896/0x1210
[ 182.821335][ T7317] ? sb_set_blocksize+0x8c/0x150
[ 182.821367][ T7317] ? setup_bdev_super+0x19d/0x330
[ 182.821388][ T7317] ? __pfx_gfs2_fill_super+0x10/0x10
[ 182.821423][ T7317] get_tree_bdev_flags+0x1c0/0x290
[ 182.821451][ T7317] gfs2_get_tree+0x26/0xd0
[ 182.821482][ T7317] vfs_get_tree+0x30/0x120
[ 182.821502][ T7317] path_mount+0x5a9/0x1350
[ 182.821534][ T7317] ? putname+0x78/0xe0
[ 182.821565][ T7317] __x64_sys_mount+0x1a3/0x1e0
[ 182.821598][ T7317] do_syscall_64+0xa4/0xf80
[ 182.821632][ T7317] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 182.821653][ T7317] RIP: 0033:0x7f0c9379c10a
[ 182.821669][ T7317] 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
[ 182.821690][ T7317] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 182.821709][ T7317] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 182.821723][ T7317] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 182.821736][ T7317] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 182.821750][ T7317] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 182.821763][ T7317] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 182.821779][ T7317]
[ 182.821790][ T7317] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 182.825683][ T7316] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 182.844310][ T7317] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 182.869074][ T7321] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 183.591981][ T7342] loop4: detected capacity change from 0 to 32768
[ 183.618723][ T7321] CPU: 1 UID: 0 PID: 7321 Comm: syz.3.116 Not tainted syzkaller #0 PREEMPT(full)
[ 183.618752][ T7321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 183.618765][ T7321] Call Trace:
[ 183.618772][ T7321]
[ 183.618779][ T7321] dump_stack_lvl+0x97/0xe0
[ 183.618808][ T7321] sysfs_warn_dup.cold+0x1c/0x28
[ 183.618841][ T7321] sysfs_create_dir_ns+0x129/0x140
[ 183.618869][ T7321] kobject_add_internal+0x104/0x310
[ 183.618896][ T7321] kobject_init_and_add+0xb2/0xf0
[ 183.618923][ T7321] ? alloc_workqueue_noprof+0xe0/0xb60
[ 183.618952][ T7321] gfs2_sys_fs_add+0xef/0x200
[ 183.618983][ T7321] gfs2_fill_super+0x896/0x1210
[ 183.619003][ T7321] ? sb_set_blocksize+0x8c/0x150
[ 183.619029][ T7321] ? setup_bdev_super+0x19d/0x330
[ 183.619051][ T7321] ? __pfx_gfs2_fill_super+0x10/0x10
[ 183.619086][ T7321] get_tree_bdev_flags+0x1c0/0x290
[ 183.619114][ T7321] gfs2_get_tree+0x26/0xd0
[ 183.619146][ T7321] vfs_get_tree+0x30/0x120
[ 183.619166][ T7321] path_mount+0x5a9/0x1350
[ 183.619198][ T7321] ? putname+0x78/0xe0
[ 183.619230][ T7321] __x64_sys_mount+0x1a3/0x1e0
[ 183.619268][ T7321] do_syscall_64+0xa4/0xf80
[ 183.619302][ T7321] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 183.619325][ T7321] RIP: 0033:0x7fc45b79c10a
[ 183.619340][ T7321] 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
[ 183.619360][ T7321] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 183.619380][ T7321] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 183.619394][ T7321] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 183.619408][ T7321] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 183.619421][ T7321] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 183.619434][ T7321] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 183.619450][ T7321]
[ 183.619463][ T7321] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 183.858718][ T7321] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 183.868197][ T7342] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 183.876265][ T7342] CPU: 1 UID: 0 PID: 7342 Comm: syz.4.120 Not tainted syzkaller #0 PREEMPT(full)
[ 183.876293][ T7342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 183.876305][ T7342] Call Trace:
[ 183.876310][ T7342]
[ 183.876316][ T7342] dump_stack_lvl+0x97/0xe0
[ 183.876344][ T7342] sysfs_warn_dup.cold+0x1c/0x28
[ 183.876377][ T7342] sysfs_create_dir_ns+0x129/0x140
[ 183.876406][ T7342] kobject_add_internal+0x104/0x310
[ 183.876434][ T7342] kobject_init_and_add+0xb2/0xf0
[ 183.876457][ T7342] ? alloc_workqueue_noprof+0xe0/0xb60
[ 183.876487][ T7342] gfs2_sys_fs_add+0xef/0x200
[ 183.876520][ T7342] gfs2_fill_super+0x896/0x1210
[ 183.876541][ T7342] ? sb_set_blocksize+0x8c/0x150
[ 183.876568][ T7342] ? setup_bdev_super+0x19d/0x330
[ 183.876589][ T7342] ? __pfx_gfs2_fill_super+0x10/0x10
[ 183.876619][ T7342] get_tree_bdev_flags+0x1c0/0x290
[ 183.876645][ T7342] gfs2_get_tree+0x26/0xd0
[ 183.876678][ T7342] vfs_get_tree+0x30/0x120
[ 183.876698][ T7342] path_mount+0x5a9/0x1350
[ 183.876730][ T7342] ? putname+0x78/0xe0
[ 183.876761][ T7342] __x64_sys_mount+0x1a3/0x1e0
[ 183.876791][ T7342] do_syscall_64+0xa4/0xf80
[ 183.876824][ T7342] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 183.876846][ T7342] RIP: 0033:0x7f72ded9c10a
[ 183.876863][ T7342] 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
[ 183.876884][ T7342] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 183.876904][ T7342] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 183.876918][ T7342] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 183.876933][ T7342] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 183.876948][ T7342] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 183.876962][ T7342] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 183.876978][ T7342]
[ 183.876988][ T7342] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 183.878531][ T9] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9381 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 183.902186][ T7344] loop5: detected capacity change from 0 to 32768
[ 183.903269][ T797] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9386 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 183.988383][ T7342] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 183.993416][ T9] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full)
[ 183.993442][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 183.993457][ T9] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 183.993492][ T9] Call Trace:
[ 183.993498][ T9]
[ 183.993504][ T9] dump_stack_lvl+0x97/0xe0
[ 183.993528][ T9] gfs2_meta_check_ii.cold+0xa/0x77
[ 183.993550][ T9] gfs2_meta_buffer+0x1a2/0x1b0
[ 183.993579][ T9] inode_go_instantiate+0x61/0x560
[ 183.993613][ T9] gfs2_instantiate+0xa7/0x130
[ 183.993639][ T9] gfs2_inode_lookup+0x49a/0x520
[ 183.993660][ T9] ? set_next_entity+0xdb/0x270
[ 183.993689][ T9] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 183.993711][ T9] gfs2_lookup_by_inum+0x2f/0xb0
[ 183.993733][ T9] delete_work_func+0xa3/0x2d0
[ 183.993764][ T9] ? __schedule+0x47f/0x1740
[ 183.993795][ T9] ? __queue_delayed_work+0x196/0x240
[ 183.993819][ T9] process_one_work+0x26c/0x590
[ 183.993853][ T9] worker_thread+0x2b1/0x4f0
[ 183.993885][ T9] ? __pfx_worker_thread+0x10/0x10
[ 183.993918][ T9] kthread+0x161/0x310
[ 183.993942][ T9] ? __pfx_kthread+0x10/0x10
[ 183.993966][ T9] ? __pfx_kthread+0x10/0x10
[ 183.993990][ T9] ret_from_fork+0x23c/0x320
[ 183.994014][ T9] ? __pfx_kthread+0x10/0x10
[ 183.994038][ T9] ret_from_fork_asm+0x1a/0x30
[ 183.994069][ T9]
[ 183.994075][ T9] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 184.027539][ T7348] loop6: detected capacity change from 0 to 32768
[ 184.059606][ T7319] loop1: writeback error on inode 9394, offset 6656000, sector 31896
[ 184.066350][ T7344] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 184.092967][ T9] gfs2: fsid=syz:syz.0: file system withdrawn
[ 184.319661][ T7344] CPU: 0 UID: 0 PID: 7344 Comm: syz.5.121 Not tainted syzkaller #0 PREEMPT(full)
[ 184.319690][ T7344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 184.319703][ T7344] Call Trace:
[ 184.319709][ T7344]
[ 184.319715][ T7344] dump_stack_lvl+0x97/0xe0
[ 184.319743][ T7344] sysfs_warn_dup.cold+0x1c/0x28
[ 184.319776][ T7344] sysfs_create_dir_ns+0x129/0x140
[ 184.319804][ T7344] kobject_add_internal+0x104/0x310
[ 184.319831][ T7344] kobject_init_and_add+0xb2/0xf0
[ 184.319858][ T7344] ? alloc_workqueue_noprof+0xe0/0xb60
[ 184.319888][ T7344] gfs2_sys_fs_add+0xef/0x200
[ 184.319919][ T7344] gfs2_fill_super+0x896/0x1210
[ 184.319940][ T7344] ? sb_set_blocksize+0x8c/0x150
[ 184.319965][ T7344] ? setup_bdev_super+0x19d/0x330
[ 184.319998][ T7344] ? __pfx_gfs2_fill_super+0x10/0x10
[ 184.320033][ T7344] get_tree_bdev_flags+0x1c0/0x290
[ 184.320061][ T7344] gfs2_get_tree+0x26/0xd0
[ 184.320089][ T7344] vfs_get_tree+0x30/0x120
[ 184.320109][ T7344] path_mount+0x5a9/0x1350
[ 184.320142][ T7344] ? putname+0x78/0xe0
[ 184.320173][ T7344] __x64_sys_mount+0x1a3/0x1e0
[ 184.320207][ T7344] do_syscall_64+0xa4/0xf80
[ 184.320239][ T7344] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 184.320261][ T7344] RIP: 0033:0x7f37bff9c10a
[ 184.320276][ T7344] 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
[ 184.320296][ T7344] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 184.320315][ T7344] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 184.320329][ T7344] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 184.320341][ T7344] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 184.320352][ T7344] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 184.320364][ T7344] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 184.320381][ T7344]
[ 184.320391][ T7344] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 184.540079][ T7344] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 184.548785][ T7348] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 184.556451][ T7348] CPU: 1 UID: 0 PID: 7348 Comm: syz.6.123 Not tainted syzkaller #0 PREEMPT(full)
[ 184.556469][ T7348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 184.556477][ T7348] Call Trace:
[ 184.556481][ T7348]
[ 184.556486][ T7348] dump_stack_lvl+0x97/0xe0
[ 184.556504][ T7348] sysfs_warn_dup.cold+0x1c/0x28
[ 184.556523][ T7348] sysfs_create_dir_ns+0x129/0x140
[ 184.556539][ T7348] kobject_add_internal+0x104/0x310
[ 184.556555][ T7348] kobject_init_and_add+0xb2/0xf0
[ 184.556570][ T7348] ? alloc_workqueue_noprof+0xe0/0xb60
[ 184.556586][ T7348] gfs2_sys_fs_add+0xef/0x200
[ 184.556604][ T7348] gfs2_fill_super+0x896/0x1210
[ 184.556615][ T7348] ? sb_set_blocksize+0x8c/0x150
[ 184.556629][ T7348] ? setup_bdev_super+0x19d/0x330
[ 184.556642][ T7348] ? __pfx_gfs2_fill_super+0x10/0x10
[ 184.556663][ T7348] get_tree_bdev_flags+0x1c0/0x290
[ 184.556678][ T7348] gfs2_get_tree+0x26/0xd0
[ 184.556696][ T7348] vfs_get_tree+0x30/0x120
[ 184.556707][ T7348] path_mount+0x5a9/0x1350
[ 184.556726][ T7348] ? putname+0x78/0xe0
[ 184.556743][ T7348] __x64_sys_mount+0x1a3/0x1e0
[ 184.556762][ T7348] do_syscall_64+0xa4/0xf80
[ 184.556786][ T7348] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 184.556798][ T7348] RIP: 0033:0x7f0c9379c10a
[ 184.556808][ T7348] 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
[ 184.556820][ T7348] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 184.556831][ T7348] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 184.556839][ T7348] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 184.556847][ T7348] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 184.556855][ T7348] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 184.556862][ T7348] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 184.556871][ T7348]
[ 184.608785][ T7348] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 184.731160][ T7350] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 184.746392][ T7348] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 184.753931][ T7346] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 184.758857][ T7350] CPU: 0 UID: 0 PID: 7350 Comm: syz.0.124 Not tainted syzkaller #0 PREEMPT(full)
[ 184.758885][ T7350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 184.758897][ T7350] Call Trace:
[ 184.758903][ T7350]
[ 184.758909][ T7350] dump_stack_lvl+0x97/0xe0
[ 184.758944][ T7350] sysfs_warn_dup.cold+0x1c/0x28
[ 184.758977][ T7350] sysfs_create_dir_ns+0x129/0x140
[ 184.759004][ T7350] kobject_add_internal+0x104/0x310
[ 184.759032][ T7350] kobject_init_and_add+0xb2/0xf0
[ 184.759058][ T7350] ? alloc_workqueue_noprof+0xe0/0xb60
[ 184.759085][ T7350] gfs2_sys_fs_add+0xef/0x200
[ 184.759115][ T7350] gfs2_fill_super+0x896/0x1210
[ 184.759135][ T7350] ? sb_set_blocksize+0x8c/0x150
[ 184.759160][ T7350] ? setup_bdev_super+0x19d/0x330
[ 184.759182][ T7350] ? __pfx_gfs2_fill_super+0x10/0x10
[ 184.759227][ T7350] get_tree_bdev_flags+0x1c0/0x290
[ 184.759254][ T7350] gfs2_get_tree+0x26/0xd0
[ 184.759285][ T7350] vfs_get_tree+0x30/0x120
[ 184.759305][ T7350] path_mount+0x5a9/0x1350
[ 184.759337][ T7350] ? putname+0x78/0xe0
[ 184.759367][ T7350] __x64_sys_mount+0x1a3/0x1e0
[ 184.759398][ T7350] do_syscall_64+0xa4/0xf80
[ 184.759432][ T7350] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 184.759454][ T7350] RIP: 0033:0x7f61a1b9c10a
[ 184.759473][ T7350] 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
[ 184.759494][ T7350] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 184.759513][ T7350] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 184.759528][ T7350] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 184.759542][ T7350] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 184.759556][ T7350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 184.759569][ T7350] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 184.759585][ T7350]
[ 184.759596][ T7350] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 184.772763][ T7346] CPU: 1 UID: 0 PID: 7346 Comm: syz.2.122 Not tainted syzkaller #0 PREEMPT(full)
[ 184.772789][ T7346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 184.772801][ T7346] Call Trace:
[ 184.772807][ T7346]
[ 184.772813][ T7346] dump_stack_lvl+0x97/0xe0
[ 184.772840][ T7346] sysfs_warn_dup.cold+0x1c/0x28
[ 184.772873][ T7346] sysfs_create_dir_ns+0x129/0x140
[ 184.772901][ T7346] kobject_add_internal+0x104/0x310
[ 184.772928][ T7346] kobject_init_and_add+0xb2/0xf0
[ 184.772954][ T7346] ? alloc_workqueue_noprof+0xe0/0xb60
[ 184.772981][ T7346] gfs2_sys_fs_add+0xef/0x200
[ 184.773013][ T7346] gfs2_fill_super+0x896/0x1210
[ 184.773033][ T7346] ? sb_set_blocksize+0x8c/0x150
[ 184.773058][ T7346] ? setup_bdev_super+0x19d/0x330
[ 184.773081][ T7346] ? __pfx_gfs2_fill_super+0x10/0x10
[ 184.773116][ T7346] get_tree_bdev_flags+0x1c0/0x290
[ 184.773146][ T7346] gfs2_get_tree+0x26/0xd0
[ 184.773178][ T7346] vfs_get_tree+0x30/0x120
[ 184.773197][ T7346] path_mount+0x5a9/0x1350
[ 184.773238][ T7346] ? putname+0x78/0xe0
[ 184.773269][ T7346] __x64_sys_mount+0x1a3/0x1e0
[ 184.773302][ T7346] do_syscall_64+0xa4/0xf80
[ 184.773337][ T7346] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 184.773359][ T7346] RIP: 0033:0x7f983719c10a
[ 184.773374][ T7346] 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
[ 184.773395][ T7346] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 184.773415][ T7346] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 184.773430][ T7346] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 184.773443][ T7346] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 184.773457][ T7346] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 184.773470][ T7346] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 184.773487][ T7346]
[ 184.773499][ T7346] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 184.778319][ T7358] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 184.786895][ T7346] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 184.792671][ T7350] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 184.839659][ T7358] CPU: 1 UID: 0 PID: 7358 Comm: syz.3.126 Not tainted syzkaller #0 PREEMPT(full)
[ 184.839686][ T7358] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 184.839698][ T7358] Call Trace:
[ 184.839704][ T7358]
[ 184.839710][ T7358] dump_stack_lvl+0x97/0xe0
[ 184.839738][ T7358] sysfs_warn_dup.cold+0x1c/0x28
[ 184.839770][ T7358] sysfs_create_dir_ns+0x129/0x140
[ 184.839798][ T7358] kobject_add_internal+0x104/0x310
[ 184.839825][ T7358] kobject_init_and_add+0xb2/0xf0
[ 184.839852][ T7358] ? alloc_workqueue_noprof+0xe0/0xb60
[ 184.839881][ T7358] gfs2_sys_fs_add+0xef/0x200
[ 184.839912][ T7358] gfs2_fill_super+0x896/0x1210
[ 184.839932][ T7358] ? sb_set_blocksize+0x8c/0x150
[ 184.839957][ T7358] ? setup_bdev_super+0x19d/0x330
[ 184.839978][ T7358] ? __pfx_gfs2_fill_super+0x10/0x10
[ 184.840013][ T7358] get_tree_bdev_flags+0x1c0/0x290
[ 184.840039][ T7358] gfs2_get_tree+0x26/0xd0
[ 184.840071][ T7358] vfs_get_tree+0x30/0x120
[ 184.840091][ T7358] path_mount+0x5a9/0x1350
[ 184.840123][ T7358] ? putname+0x78/0xe0
[ 184.840153][ T7358] __x64_sys_mount+0x1a3/0x1e0
[ 184.840186][ T7358] do_syscall_64+0xa4/0xf80
[ 184.840227][ T7358] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 184.840249][ T7358] RIP: 0033:0x7fc45b79c10a
[ 184.840264][ T7358] 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
[ 184.840285][ T7358] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 184.840304][ T7358] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 184.840318][ T7358] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 184.840332][ T7358] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 184.840346][ T7358] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 184.840359][ T7358] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 184.840375][ T7358]
[ 184.840385][ T7358] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 185.309266][ T7367] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 185.313257][ T7358] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 185.319566][ T7367] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 185.481014][ T7367] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 185.489329][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 185.496173][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 185.512540][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 16ms
[ 185.520456][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 185.525813][ T7367] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 185.591716][ T5841] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9387 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 185.607752][ T23] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9386 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 185.623902][ T796] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9390 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 185.639691][ T6620] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9381 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 185.655338][ T5841] CPU: 1 UID: 0 PID: 5841 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT(full)
[ 185.655365][ T5841] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 185.655377][ T5841] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 185.655413][ T5841] Call Trace:
[ 185.655420][ T5841]
[ 185.655427][ T5841] dump_stack_lvl+0x97/0xe0
[ 185.655450][ T5841] gfs2_meta_check_ii.cold+0xa/0x77
[ 185.655472][ T5841] gfs2_meta_buffer+0x1a2/0x1b0
[ 185.655501][ T5841] inode_go_instantiate+0x61/0x560
[ 185.655536][ T5841] gfs2_instantiate+0xa7/0x130
[ 185.655561][ T5841] gfs2_inode_lookup+0x49a/0x520
[ 185.655583][ T5841] ? set_next_entity+0xdb/0x270
[ 185.655612][ T5841] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 185.655635][ T5841] gfs2_lookup_by_inum+0x2f/0xb0
[ 185.655657][ T5841] delete_work_func+0xa3/0x2d0
[ 185.655688][ T5841] ? __schedule+0x47f/0x1740
[ 185.655722][ T5841] process_one_work+0x26c/0x590
[ 185.655758][ T5841] worker_thread+0x2b1/0x4f0
[ 185.655790][ T5841] ? __pfx_worker_thread+0x10/0x10
[ 185.655826][ T5841] kthread+0x161/0x310
[ 185.655858][ T5841] ? __pfx_kthread+0x10/0x10
[ 185.655882][ T5841] ? __pfx_kthread+0x10/0x10
[ 185.655907][ T5841] ret_from_fork+0x23c/0x320
[ 185.655933][ T5841] ? __pfx_kthread+0x10/0x10
[ 185.655957][ T5841] ret_from_fork_asm+0x1a/0x30
[ 185.655990][ T5841]
[ 185.655996][ T5841] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 190.878814][ T6336] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 564
[ 190.893637][ T6336] CPU: 0 UID: 0 PID: 6336 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 190.893663][ T6336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 190.893674][ T6336] Call Trace:
[ 190.893680][ T6336]
[ 190.893687][ T6336] dump_stack_lvl+0x97/0xe0
[ 190.893716][ T6336] gfs2_assert_warn_i.cold+0x38/0x94
[ 190.893739][ T6336] gfs2_make_fs_ro+0x13d/0x220
[ 190.893764][ T6336] ? __pfx_autoremove_wake_function+0x10/0x10
[ 190.893801][ T6336] gfs2_put_super+0xb4/0x2d0
[ 190.893824][ T6336] ? __pfx_gfs2_put_super+0x10/0x10
[ 190.893848][ T6336] generic_shutdown_super+0x9c/0x160
[ 190.893872][ T6336] kill_block_super+0x1d/0x50
[ 190.893894][ T6336] gfs2_kill_sb+0x1b6/0x1e0
[ 190.893929][ T6336] deactivate_locked_super+0x4f/0x120
[ 190.893955][ T6336] deactivate_super+0xa4/0xc0
[ 190.893980][ T6336] cleanup_mnt+0x145/0x1f0
[ 190.894006][ T6336] task_work_run+0x95/0xf0
[ 190.894037][ T6336] exit_to_user_mode_loop+0xcf/0x440
[ 190.894057][ T6336] do_syscall_64+0x2b8/0xf80
[ 190.894077][ T6336] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 190.894095][ T6336] RIP: 0033:0x7f129df9c0d7
[ 190.894105][ T6336] Code: a2 c7 05 bc 64 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
[ 190.894117][ T6336] RSP: 002b:00007ffc5c602658 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 190.894129][ T6336] RAX: 0000000000000000 RBX: 00007f129e02d33b RCX: 00007f129df9c0d7
[ 190.894136][ T6336] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5c602710
[ 190.894144][ T6336] RBP: 00007ffc5c602710 R08: 00007ffc5c603710 R09: 00000000ffffffff
[ 190.894151][ T6336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc5c6037a0
[ 190.894159][ T6336] R13: 00007f129e02d33b R14: 000000000002d4fb R15: 00007ffc5c6037e0
[ 190.894168][ T6336]
2026/01/30 11:36:55 executed programs: 124
[ 193.034246][ T1309] ieee802154 phy0 wpan0: encryption failed: -22
[ 193.040779][ T1309] ieee802154 phy1 wpan1: encryption failed: -22
[ 193.295179][ T7376] set_capacity_and_notify: 4 callbacks suppressed
[ 193.295193][ T7376] loop4: detected capacity change from 0 to 32768
[ 193.317292][ T7382] loop5: detected capacity change from 0 to 32768
[ 193.325702][ T7386] loop3: detected capacity change from 0 to 32768
[ 193.339853][ T7379] loop2: detected capacity change from 0 to 32768
[ 193.341597][ T7381] loop1: detected capacity change from 0 to 32768
[ 193.356158][ T7384] loop0: detected capacity change from 0 to 32768
[ 193.364239][ T7386] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 193.377283][ T7387] loop6: detected capacity change from 0 to 32768
[ 193.384002][ T7382] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 193.384566][ T7381] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 193.398796][ T7379] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 193.399039][ T7382] CPU: 1 UID: 0 PID: 7382 Comm: syz.5.132 Not tainted syzkaller #0 PREEMPT(full)
[ 193.399066][ T7382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 193.399079][ T7382] Call Trace:
[ 193.399084][ T7382]
[ 193.399090][ T7382] dump_stack_lvl+0x97/0xe0
[ 193.399118][ T7382] sysfs_warn_dup.cold+0x1c/0x28
[ 193.399151][ T7382] sysfs_create_dir_ns+0x129/0x140
[ 193.399181][ T7382] kobject_add_internal+0x104/0x310
[ 193.399214][ T7382] kobject_init_and_add+0xb2/0xf0
[ 193.399241][ T7382] ? alloc_workqueue_noprof+0xe0/0xb60
[ 193.399268][ T7382] gfs2_sys_fs_add+0xef/0x200
[ 193.399299][ T7382] gfs2_fill_super+0x896/0x1210
[ 193.399319][ T7382] ? sb_set_blocksize+0x8c/0x150
[ 193.399343][ T7382] ? setup_bdev_super+0x19d/0x330
[ 193.399365][ T7382] ? __pfx_gfs2_fill_super+0x10/0x10
[ 193.399399][ T7382] get_tree_bdev_flags+0x1c0/0x290
[ 193.399425][ T7382] gfs2_get_tree+0x26/0xd0
[ 193.399456][ T7382] vfs_get_tree+0x30/0x120
[ 193.399475][ T7382] path_mount+0x5a9/0x1350
[ 193.399507][ T7382] ? putname+0x78/0xe0
[ 193.399537][ T7382] __x64_sys_mount+0x1a3/0x1e0
[ 193.399569][ T7382] do_syscall_64+0xa4/0xf80
[ 193.399602][ T7382] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 193.399624][ T7382] RIP: 0033:0x7f37bff9c10a
[ 193.399639][ T7382] 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
[ 193.399659][ T7382] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 193.399678][ T7382] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 193.399692][ T7382] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 193.399706][ T7382] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 193.399719][ T7382] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 193.399732][ T7382] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 193.399748][ T7382]
[ 193.400123][ T7382] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 193.407024][ T7386] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 193.428745][ T7379] CPU: 1 UID: 0 PID: 7379 Comm: syz.2.129 Not tainted syzkaller #0 PREEMPT(full)
[ 193.428773][ T7379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 193.428785][ T7379] Call Trace:
[ 193.428790][ T7379]
[ 193.428796][ T7379] dump_stack_lvl+0x97/0xe0
[ 193.428823][ T7379] sysfs_warn_dup.cold+0x1c/0x28
[ 193.428855][ T7379] sysfs_create_dir_ns+0x129/0x140
[ 193.428883][ T7379] kobject_add_internal+0x104/0x310
[ 193.428909][ T7379] kobject_init_and_add+0xb2/0xf0
[ 193.428936][ T7379] ? alloc_workqueue_noprof+0xe0/0xb60
[ 193.428963][ T7379] gfs2_sys_fs_add+0xef/0x200
[ 193.428997][ T7379] gfs2_fill_super+0x896/0x1210
[ 193.429017][ T7379] ? sb_set_blocksize+0x8c/0x150
[ 193.429042][ T7379] ? setup_bdev_super+0x19d/0x330
[ 193.429064][ T7379] ? __pfx_gfs2_fill_super+0x10/0x10
[ 193.429098][ T7379] get_tree_bdev_flags+0x1c0/0x290
[ 193.429125][ T7379] gfs2_get_tree+0x26/0xd0
[ 193.429162][ T7379] vfs_get_tree+0x30/0x120
[ 193.429182][ T7379] path_mount+0x5a9/0x1350
[ 193.429214][ T7379] ? putname+0x78/0xe0
[ 193.429244][ T7379] __x64_sys_mount+0x1a3/0x1e0
[ 193.429276][ T7379] do_syscall_64+0xa4/0xf80
[ 193.429309][ T7379] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 193.429330][ T7379] RIP: 0033:0x7f983719c10a
[ 193.429345][ T7379] 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
[ 193.429365][ T7379] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 193.429384][ T7379] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 193.429398][ T7379] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 193.429412][ T7379] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 193.429425][ T7379] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 193.429438][ T7379] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 193.429454][ T7379]
[ 193.429474][ T7379] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 193.431485][ T7381] CPU: 0 UID: 0 PID: 7381 Comm: syz.1.128 Not tainted syzkaller #0 PREEMPT(full)
[ 193.431512][ T7381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 193.431524][ T7381] Call Trace:
[ 193.431529][ T7381]
[ 193.431535][ T7381] dump_stack_lvl+0x97/0xe0
[ 193.431560][ T7381] sysfs_warn_dup.cold+0x1c/0x28
[ 193.431592][ T7381] sysfs_create_dir_ns+0x129/0x140
[ 193.431620][ T7381] kobject_add_internal+0x104/0x310
[ 193.431646][ T7381] kobject_init_and_add+0xb2/0xf0
[ 193.431673][ T7381] ? alloc_workqueue_noprof+0xe0/0xb60
[ 193.431702][ T7381] gfs2_sys_fs_add+0xef/0x200
[ 193.431731][ T7381] gfs2_fill_super+0x896/0x1210
[ 193.431751][ T7381] ? sb_set_blocksize+0x8c/0x150
[ 193.431775][ T7381] ? setup_bdev_super+0x19d/0x330
[ 193.431798][ T7381] ? __pfx_gfs2_fill_super+0x10/0x10
[ 193.431833][ T7381] get_tree_bdev_flags+0x1c0/0x290
[ 193.431861][ T7381] gfs2_get_tree+0x26/0xd0
[ 193.431893][ T7381] vfs_get_tree+0x30/0x120
[ 193.431912][ T7381] path_mount+0x5a9/0x1350
[ 193.431944][ T7381] ? putname+0x78/0xe0
[ 193.431975][ T7381] __x64_sys_mount+0x1a3/0x1e0
[ 193.432008][ T7381] do_syscall_64+0xa4/0xf80
[ 193.432040][ T7381] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 193.432062][ T7381] RIP: 0033:0x7f129df9c10a
[ 193.432077][ T7381] 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
[ 193.432097][ T7381] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 193.432116][ T7381] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 193.432130][ T7381] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 193.432144][ T7381] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 193.432156][ T7381] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 193.432167][ T7381] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 193.432181][ T7381]
[ 193.432190][ T7381] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 193.432826][ T7379] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 193.437210][ T7381] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 193.437291][ T7382] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 193.451795][ T7384] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 193.533268][ T7386] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 193.598731][ T7384] CPU: 1 UID: 0 PID: 7384 Comm: syz.0.127 Not tainted syzkaller #0 PREEMPT(full)
[ 193.598760][ T7384] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 193.598773][ T7384] Call Trace:
[ 193.598779][ T7384]
[ 193.598787][ T7384] dump_stack_lvl+0x97/0xe0
[ 193.598820][ T7384] sysfs_warn_dup.cold+0x1c/0x28
[ 193.598854][ T7384] sysfs_create_dir_ns+0x129/0x140
[ 193.598881][ T7384] kobject_add_internal+0x104/0x310
[ 193.598908][ T7384] kobject_init_and_add+0xb2/0xf0
[ 193.598935][ T7384] ? alloc_workqueue_noprof+0xe0/0xb60
[ 193.598963][ T7384] gfs2_sys_fs_add+0xef/0x200
[ 193.598993][ T7384] gfs2_fill_super+0x896/0x1210
[ 193.599013][ T7384] ? sb_set_blocksize+0x8c/0x150
[ 193.599038][ T7384] ? setup_bdev_super+0x19d/0x330
[ 193.599060][ T7384] ? __pfx_gfs2_fill_super+0x10/0x10
[ 193.599098][ T7384] get_tree_bdev_flags+0x1c0/0x290
[ 193.599125][ T7384] gfs2_get_tree+0x26/0xd0
[ 193.599157][ T7384] vfs_get_tree+0x30/0x120
[ 193.599178][ T7384] path_mount+0x5a9/0x1350
[ 193.599210][ T7384] ? putname+0x78/0xe0
[ 193.599241][ T7384] __x64_sys_mount+0x1a3/0x1e0
[ 193.599273][ T7384] do_syscall_64+0xa4/0xf80
[ 193.599307][ T7384] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 193.599329][ T7384] RIP: 0033:0x7f61a1b9c10a
[ 193.599345][ T7384] 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
[ 193.599372][ T7384] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 193.599391][ T7384] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 193.599405][ T7384] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 193.599419][ T7384] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 193.599433][ T7384] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 193.599447][ T7384] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 193.599463][ T7384]
[ 193.599525][ T7384] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 193.636433][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 193.645200][ T7384] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 193.648267][ T7376] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 193.652189][ T7387] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 193.655630][ T7376] CPU: 0 UID: 0 PID: 7376 Comm: syz.4.131 Not tainted syzkaller #0 PREEMPT(full)
[ 193.655655][ T7376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 193.655667][ T7376] Call Trace:
[ 193.655672][ T7376]
[ 193.655679][ T7376] dump_stack_lvl+0x97/0xe0
[ 193.655706][ T7376] sysfs_warn_dup.cold+0x1c/0x28
[ 193.655739][ T7376] sysfs_create_dir_ns+0x129/0x140
[ 193.655767][ T7376] kobject_add_internal+0x104/0x310
[ 193.655799][ T7376] kobject_init_and_add+0xb2/0xf0
[ 193.655825][ T7376] ? alloc_workqueue_noprof+0xe0/0xb60
[ 193.655853][ T7376] gfs2_sys_fs_add+0xef/0x200
[ 193.655883][ T7376] gfs2_fill_super+0x896/0x1210
[ 193.655903][ T7376] ? sb_set_blocksize+0x8c/0x150
[ 193.655928][ T7376] ? setup_bdev_super+0x19d/0x330
[ 193.655959][ T7376] ? __pfx_gfs2_fill_super+0x10/0x10
[ 193.655994][ T7376] get_tree_bdev_flags+0x1c0/0x290
[ 193.656020][ T7376] gfs2_get_tree+0x26/0xd0
[ 193.656051][ T7376] vfs_get_tree+0x30/0x120
[ 193.656071][ T7376] path_mount+0x5a9/0x1350
[ 193.656102][ T7376] ? putname+0x78/0xe0
[ 193.656138][ T7376] __x64_sys_mount+0x1a3/0x1e0
[ 193.656171][ T7376] do_syscall_64+0xa4/0xf80
[ 193.656205][ T7376] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 193.656226][ T7376] RIP: 0033:0x7f72ded9c10a
[ 193.656242][ T7376] 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
[ 193.656263][ T7376] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 193.656282][ T7376] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 193.656296][ T7376] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 193.656310][ T7376] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 193.656323][ T7376] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 193.656335][ T7376] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 193.656352][ T7376]
[ 193.656360][ T7376] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 193.660877][ T7387] CPU: 1 UID: 0 PID: 7387 Comm: syz.6.133 Not tainted syzkaller #0 PREEMPT(full)
[ 193.660903][ T7387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 193.660914][ T7387] Call Trace:
[ 193.660920][ T7387]
[ 193.660926][ T7387] dump_stack_lvl+0x97/0xe0
[ 193.660951][ T7387] sysfs_warn_dup.cold+0x1c/0x28
[ 193.660983][ T7387] sysfs_create_dir_ns+0x129/0x140
[ 193.661010][ T7387] kobject_add_internal+0x104/0x310
[ 193.661036][ T7387] kobject_init_and_add+0xb2/0xf0
[ 193.661063][ T7387] ? alloc_workqueue_noprof+0xe0/0xb60
[ 193.661090][ T7387] gfs2_sys_fs_add+0xef/0x200
[ 193.661119][ T7387] gfs2_fill_super+0x896/0x1210
[ 193.661139][ T7387] ? sb_set_blocksize+0x8c/0x150
[ 193.661164][ T7387] ? setup_bdev_super+0x19d/0x330
[ 193.661186][ T7387] ? __pfx_gfs2_fill_super+0x10/0x10
[ 193.661220][ T7387] get_tree_bdev_flags+0x1c0/0x290
[ 193.661247][ T7387] gfs2_get_tree+0x26/0xd0
[ 193.661280][ T7387] vfs_get_tree+0x30/0x120
[ 193.661299][ T7387] path_mount+0x5a9/0x1350
[ 193.661331][ T7387] ? putname+0x78/0xe0
[ 193.661368][ T7387] __x64_sys_mount+0x1a3/0x1e0
[ 193.661401][ T7387] do_syscall_64+0xa4/0xf80
[ 193.661435][ T7387] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 193.661457][ T7387] RIP: 0033:0x7f0c9379c10a
[ 193.661471][ T7387] 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
[ 193.661492][ T7387] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 193.661512][ T7387] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 193.661526][ T7387] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 193.661540][ T7387] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 193.661554][ T7387] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 193.661567][ T7387] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 193.661583][ T7387]
[ 193.661592][ T7387] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 193.691940][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 193.696573][ T7376] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 193.717002][ T9] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 25ms
[ 193.878710][ T7387] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 193.882007][ T9] gfs2: fsid=syz:syz.0: jid=0: Done
[ 194.768230][ T7415] loop0: detected capacity change from 0 to 32768
[ 194.788254][ T7411] loop1: detected capacity change from 0 to 32768
[ 194.802451][ T7413] loop6: detected capacity change from 0 to 32768
[ 194.846413][ T7413] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 194.853999][ T7413] CPU: 0 UID: 0 PID: 7413 Comm: syz.6.136 Not tainted syzkaller #0 PREEMPT(full)
[ 194.854024][ T7413] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 194.854035][ T7413] Call Trace:
[ 194.854040][ T7413]
[ 194.854046][ T7413] dump_stack_lvl+0x97/0xe0
[ 194.854071][ T7413] sysfs_warn_dup.cold+0x1c/0x28
[ 194.854099][ T7413] sysfs_create_dir_ns+0x129/0x140
[ 194.854123][ T7413] kobject_add_internal+0x104/0x310
[ 194.854148][ T7413] kobject_init_and_add+0xb2/0xf0
[ 194.854172][ T7413] ? alloc_workqueue_noprof+0xe0/0xb60
[ 194.854199][ T7413] gfs2_sys_fs_add+0xef/0x200
[ 194.854230][ T7413] gfs2_fill_super+0x896/0x1210
[ 194.854249][ T7413] ? sb_set_blocksize+0x8c/0x150
[ 194.854274][ T7413] ? setup_bdev_super+0x19d/0x330
[ 194.854300][ T7413] ? __pfx_gfs2_fill_super+0x10/0x10
[ 194.854336][ T7413] get_tree_bdev_flags+0x1c0/0x290
[ 194.854361][ T7413] gfs2_get_tree+0x26/0xd0
[ 194.854396][ T7413] vfs_get_tree+0x30/0x120
[ 194.854414][ T7413] path_mount+0x5a9/0x1350
[ 194.854445][ T7413] ? putname+0x78/0xe0
[ 194.854475][ T7413] __x64_sys_mount+0x1a3/0x1e0
[ 194.854509][ T7413] do_syscall_64+0xa4/0xf80
[ 194.854543][ T7413] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 194.854564][ T7413] RIP: 0033:0x7f0c9379c10a
[ 194.854580][ T7413] 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
[ 194.854602][ T7413] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 194.854623][ T7413] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 194.854637][ T7413] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 194.854651][ T7413] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 194.854664][ T7413] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 194.854678][ T7413] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 194.854696][ T7413]
[ 194.854706][ T7413] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 194.951980][ T7411] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 194.974665][ T7413] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 195.018817][ T7411] CPU: 1 UID: 0 PID: 7411 Comm: syz.1.135 Not tainted syzkaller #0 PREEMPT(full)
[ 195.018844][ T7411] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 195.018856][ T7411] Call Trace:
[ 195.018864][ T7411]
[ 195.018871][ T7411] dump_stack_lvl+0x97/0xe0
[ 195.018898][ T7411] sysfs_warn_dup.cold+0x1c/0x28
[ 195.018930][ T7411] sysfs_create_dir_ns+0x129/0x140
[ 195.018958][ T7411] kobject_add_internal+0x104/0x310
[ 195.018987][ T7411] kobject_init_and_add+0xb2/0xf0
[ 195.019023][ T7411] ? alloc_workqueue_noprof+0xe0/0xb60
[ 195.019050][ T7411] gfs2_sys_fs_add+0xef/0x200
[ 195.019080][ T7411] gfs2_fill_super+0x896/0x1210
[ 195.019101][ T7411] ? sb_set_blocksize+0x8c/0x150
[ 195.019125][ T7411] ? setup_bdev_super+0x19d/0x330
[ 195.019147][ T7411] ? __pfx_gfs2_fill_super+0x10/0x10
[ 195.019182][ T7411] get_tree_bdev_flags+0x1c0/0x290
[ 195.019210][ T7411] gfs2_get_tree+0x26/0xd0
[ 195.019241][ T7411] vfs_get_tree+0x30/0x120
[ 195.019261][ T7411] path_mount+0x5a9/0x1350
[ 195.019292][ T7411] ? putname+0x78/0xe0
[ 195.019323][ T7411] __x64_sys_mount+0x1a3/0x1e0
[ 195.019355][ T7411] do_syscall_64+0xa4/0xf80
[ 195.019388][ T7411] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 195.019410][ T7411] RIP: 0033:0x7f129df9c10a
[ 195.019425][ T7411] 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
[ 195.019446][ T7411] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 195.019465][ T7411] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 195.019479][ T7411] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 195.019493][ T7411] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 195.019506][ T7411] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 195.019519][ T7411] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 195.019535][ T7411]
[ 195.019561][ T7411] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 195.048796][ T7408] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 195.051991][ T7386] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 195.066503][ T7408] CPU: 0 UID: 0 PID: 7408 Comm: syz.5.134 Not tainted syzkaller #0 PREEMPT(full)
[ 195.066531][ T7408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 195.066544][ T7408] Call Trace:
[ 195.066549][ T7408]
[ 195.066555][ T7408] dump_stack_lvl+0x97/0xe0
[ 195.066583][ T7408] sysfs_warn_dup.cold+0x1c/0x28
[ 195.066615][ T7408] sysfs_create_dir_ns+0x129/0x140
[ 195.066643][ T7408] kobject_add_internal+0x104/0x310
[ 195.066669][ T7408] kobject_init_and_add+0xb2/0xf0
[ 195.066696][ T7408] ? alloc_workqueue_noprof+0xe0/0xb60
[ 195.066724][ T7408] gfs2_sys_fs_add+0xef/0x200
[ 195.066754][ T7408] gfs2_fill_super+0x896/0x1210
[ 195.066775][ T7408] ? sb_set_blocksize+0x8c/0x150
[ 195.066800][ T7408] ? setup_bdev_super+0x19d/0x330
[ 195.066821][ T7408] ? __pfx_gfs2_fill_super+0x10/0x10
[ 195.066857][ T7408] get_tree_bdev_flags+0x1c0/0x290
[ 195.066884][ T7408] gfs2_get_tree+0x26/0xd0
[ 195.066915][ T7408] vfs_get_tree+0x30/0x120
[ 195.066935][ T7408] path_mount+0x5a9/0x1350
[ 195.066968][ T7408] ? putname+0x78/0xe0
[ 195.066998][ T7408] __x64_sys_mount+0x1a3/0x1e0
[ 195.067030][ T7408] do_syscall_64+0xa4/0xf80
[ 195.067064][ T7408] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 195.067086][ T7408] RIP: 0033:0x7f37bff9c10a
[ 195.067101][ T7408] 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
[ 195.067122][ T7408] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 195.067141][ T7408] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 195.067155][ T7408] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 195.067169][ T7408] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 195.067182][ T7408] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 195.067195][ T7408] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 195.067211][ T7408]
[ 195.067222][ T7408] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 195.092333][ T7411] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 195.099370][ T7415] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 195.219262][ T7408] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 195.244549][ T7415] CPU: 0 UID: 0 PID: 7415 Comm: syz.0.138 Not tainted syzkaller #0 PREEMPT(full)
[ 195.244579][ T7415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 195.244591][ T7415] Call Trace:
[ 195.244597][ T7415]
[ 195.244603][ T7415] dump_stack_lvl+0x97/0xe0
[ 195.244632][ T7415] sysfs_warn_dup.cold+0x1c/0x28
[ 195.244664][ T7415] sysfs_create_dir_ns+0x129/0x140
[ 195.244693][ T7415] kobject_add_internal+0x104/0x310
[ 195.244719][ T7415] kobject_init_and_add+0xb2/0xf0
[ 195.244748][ T7415] ? alloc_workqueue_noprof+0xe0/0xb60
[ 195.244776][ T7415] gfs2_sys_fs_add+0xef/0x200
[ 195.244808][ T7415] gfs2_fill_super+0x896/0x1210
[ 195.244828][ T7415] ? sb_set_blocksize+0x8c/0x150
[ 195.244853][ T7415] ? setup_bdev_super+0x19d/0x330
[ 195.244876][ T7415] ? __pfx_gfs2_fill_super+0x10/0x10
[ 195.244911][ T7415] get_tree_bdev_flags+0x1c0/0x290
[ 195.244943][ T7415] gfs2_get_tree+0x26/0xd0
[ 195.244975][ T7415] vfs_get_tree+0x30/0x120
[ 195.244994][ T7415] path_mount+0x5a9/0x1350
[ 195.245026][ T7415] ? putname+0x78/0xe0
[ 195.245056][ T7415] __x64_sys_mount+0x1a3/0x1e0
[ 195.245089][ T7415] do_syscall_64+0xa4/0xf80
[ 195.245128][ T7415] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 195.245150][ T7415] RIP: 0033:0x7f61a1b9c10a
[ 195.245166][ T7415] 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
[ 195.245187][ T7415] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 195.245206][ T7415] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 195.245220][ T7415] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 195.245234][ T7415] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 195.245247][ T7415] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 195.245266][ T7415] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 195.245283][ T7415]
[ 195.245293][ T7415] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 195.372040][ T7419] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 195.372545][ T7415] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 195.418742][ T7419] CPU: 1 UID: 0 PID: 7419 Comm: syz.2.137 Not tainted syzkaller #0 PREEMPT(full)
[ 195.418771][ T7419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 195.418784][ T7419] Call Trace:
[ 195.418790][ T7419]
[ 195.418796][ T7419] dump_stack_lvl+0x97/0xe0
[ 195.418823][ T7419] sysfs_warn_dup.cold+0x1c/0x28
[ 195.418855][ T7419] sysfs_create_dir_ns+0x129/0x140
[ 195.418883][ T7419] kobject_add_internal+0x104/0x310
[ 195.418909][ T7419] kobject_init_and_add+0xb2/0xf0
[ 195.418936][ T7419] ? alloc_workqueue_noprof+0xe0/0xb60
[ 195.418964][ T7419] gfs2_sys_fs_add+0xef/0x200
[ 195.418994][ T7419] gfs2_fill_super+0x896/0x1210
[ 195.419020][ T7419] ? sb_set_blocksize+0x8c/0x150
[ 195.419043][ T7419] ? setup_bdev_super+0x19d/0x330
[ 195.419061][ T7419] ? __pfx_gfs2_fill_super+0x10/0x10
[ 195.419095][ T7419] get_tree_bdev_flags+0x1c0/0x290
[ 195.419125][ T7419] gfs2_get_tree+0x26/0xd0
[ 195.419156][ T7419] vfs_get_tree+0x30/0x120
[ 195.419176][ T7419] path_mount+0x5a9/0x1350
[ 195.419209][ T7419] ? putname+0x78/0xe0
[ 195.419238][ T7419] __x64_sys_mount+0x1a3/0x1e0
[ 195.419270][ T7419] do_syscall_64+0xa4/0xf80
[ 195.419303][ T7419] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 195.419325][ T7419] RIP: 0033:0x7f983719c10a
[ 195.419340][ T7419] 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
[ 195.419361][ T7419] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 195.419380][ T7419] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 195.419394][ T7419] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 195.419407][ T7419] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 195.419420][ T7419] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 195.419433][ T7419] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 195.419449][ T7419]
[ 195.419469][ T7419] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 195.489436][ T9] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9386 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 195.491989][ T7419] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 195.499928][ T10] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9390 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 195.539099][ T7417] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 195.546997][ T5912] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9387 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 195.682739][ T7417] CPU: 1 UID: 0 PID: 7417 Comm: syz.4.139 Not tainted syzkaller #0 PREEMPT(full)
[ 195.682768][ T7417] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 195.682781][ T7417] Call Trace:
[ 195.682787][ T7417]
[ 195.682793][ T7417] dump_stack_lvl+0x97/0xe0
[ 195.682821][ T7417] sysfs_warn_dup.cold+0x1c/0x28
[ 195.682876][ T7417] sysfs_create_dir_ns+0x129/0x140
[ 195.682901][ T7417] kobject_add_internal+0x104/0x310
[ 195.682927][ T7417] kobject_init_and_add+0xb2/0xf0
[ 195.682951][ T7417] ? alloc_workqueue_noprof+0xe0/0xb60
[ 195.682980][ T7417] gfs2_sys_fs_add+0xef/0x200
[ 195.683011][ T7417] gfs2_fill_super+0x896/0x1210
[ 195.683031][ T7417] ? sb_set_blocksize+0x8c/0x150
[ 195.683057][ T7417] ? setup_bdev_super+0x19d/0x330
[ 195.683079][ T7417] ? __pfx_gfs2_fill_super+0x10/0x10
[ 195.683113][ T7417] get_tree_bdev_flags+0x1c0/0x290
[ 195.683141][ T7417] gfs2_get_tree+0x26/0xd0
[ 195.683173][ T7417] vfs_get_tree+0x30/0x120
[ 195.683193][ T7417] path_mount+0x5a9/0x1350
[ 195.683233][ T7417] ? putname+0x78/0xe0
[ 195.683264][ T7417] __x64_sys_mount+0x1a3/0x1e0
[ 195.683298][ T7417] do_syscall_64+0xa4/0xf80
[ 195.683332][ T7417] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 195.683355][ T7417] RIP: 0033:0x7f72ded9c10a
[ 195.683371][ T7417] 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
[ 195.683391][ T7417] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 195.683410][ T7417] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 195.683424][ T7417] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 195.683438][ T7417] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 195.683452][ T7417] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 195.683465][ T7417] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 195.683482][ T7417]
[ 195.683504][ T7417] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 195.691962][ T9] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full)
[ 195.691996][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 195.692010][ T9] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 195.692043][ T9] Call Trace:
[ 195.692048][ T9]
[ 195.692054][ T9] dump_stack_lvl+0x97/0xe0
[ 195.692078][ T9] gfs2_meta_check_ii.cold+0xa/0x77
[ 195.692100][ T9] gfs2_meta_buffer+0x1a2/0x1b0
[ 195.692127][ T9] inode_go_instantiate+0x61/0x560
[ 195.692162][ T9] gfs2_instantiate+0xa7/0x130
[ 195.692186][ T9] gfs2_inode_lookup+0x49a/0x520
[ 195.692207][ T9] ? set_next_entity+0xdb/0x270
[ 195.692233][ T9] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 195.692256][ T9] gfs2_lookup_by_inum+0x2f/0xb0
[ 195.692276][ T9] delete_work_func+0xa3/0x2d0
[ 195.692306][ T9] ? __schedule+0x47f/0x1740
[ 195.692336][ T9] ? __queue_delayed_work+0x196/0x240
[ 195.692359][ T9] process_one_work+0x26c/0x590
[ 195.692393][ T9] worker_thread+0x2b1/0x4f0
[ 195.692424][ T9] ? __pfx_worker_thread+0x10/0x10
[ 195.692456][ T9] kthread+0x161/0x310
[ 195.692479][ T9] ? __pfx_kthread+0x10/0x10
[ 195.692501][ T9] ? __pfx_kthread+0x10/0x10
[ 195.692524][ T9] ret_from_fork+0x23c/0x320
[ 195.692548][ T9] ? __pfx_kthread+0x10/0x10
[ 195.692572][ T9] ret_from_fork_asm+0x1a/0x30
[ 195.692602][ T9]
[ 195.692608][ T9] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 195.806455][ T7417] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 196.058766][ T7433] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 196.406290][ T7433] CPU: 1 UID: 0 PID: 7433 Comm: syz.1.140 Not tainted syzkaller #0 PREEMPT(full)
[ 196.406315][ T7433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 196.406327][ T7433] Call Trace:
[ 196.406332][ T7433]
[ 196.406339][ T7433] dump_stack_lvl+0x97/0xe0
[ 196.406365][ T7433] sysfs_warn_dup.cold+0x1c/0x28
[ 196.406394][ T7433] sysfs_create_dir_ns+0x129/0x140
[ 196.406421][ T7433] kobject_add_internal+0x104/0x310
[ 196.406446][ T7433] kobject_init_and_add+0xb2/0xf0
[ 196.406470][ T7433] ? alloc_workqueue_noprof+0xe0/0xb60
[ 196.406496][ T7433] gfs2_sys_fs_add+0xef/0x200
[ 196.406523][ T7433] gfs2_fill_super+0x896/0x1210
[ 196.406540][ T7433] ? sb_set_blocksize+0x8c/0x150
[ 196.406562][ T7433] ? setup_bdev_super+0x19d/0x330
[ 196.406583][ T7433] ? __pfx_gfs2_fill_super+0x10/0x10
[ 196.406610][ T7433] get_tree_bdev_flags+0x1c0/0x290
[ 196.406626][ T7433] gfs2_get_tree+0x26/0xd0
[ 196.406645][ T7433] vfs_get_tree+0x30/0x120
[ 196.406656][ T7433] path_mount+0x5a9/0x1350
[ 196.406674][ T7433] ? putname+0x78/0xe0
[ 196.406692][ T7433] __x64_sys_mount+0x1a3/0x1e0
[ 196.406711][ T7433] do_syscall_64+0xa4/0xf80
[ 196.406730][ T7433] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 196.406743][ T7433] RIP: 0033:0x7f129df9c10a
[ 196.406753][ T7433] 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
[ 196.406765][ T7433] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 196.406777][ T7433] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 196.406785][ T7433] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 196.406793][ T7433] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 196.406800][ T7433] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 196.406808][ T7433] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 196.406817][ T7433]
[ 196.407005][ T7433] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 196.616584][ T7433] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 200.869752][ T9] gfs2: fsid=syz:syz.0: file system withdrawn
2026/01/30 11:37:06 executed programs: 138
[ 204.287136][ T7450] set_capacity_and_notify: 4 callbacks suppressed
[ 204.287151][ T7450] loop5: detected capacity change from 0 to 32768
[ 204.303387][ T7448] loop0: detected capacity change from 0 to 32768
[ 204.315940][ T7454] loop6: detected capacity change from 0 to 32768
[ 204.330315][ T7448] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 204.338969][ T7448] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 204.347963][ T7451] loop3: detected capacity change from 0 to 32768
[ 204.366558][ T7452] loop2: detected capacity change from 0 to 32768
[ 204.373722][ T7450] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 204.383216][ T7449] loop4: detected capacity change from 0 to 32768
[ 204.397178][ T7451] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 204.398163][ T7453] loop1: detected capacity change from 0 to 32768
[ 204.405363][ T7451] CPU: 1 UID: 0 PID: 7451 Comm: syz.3.144 Not tainted syzkaller #0 PREEMPT(full)
[ 204.405390][ T7451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 204.405402][ T7451] Call Trace:
[ 204.405407][ T7451]
[ 204.405414][ T7451] dump_stack_lvl+0x97/0xe0
[ 204.405442][ T7451] sysfs_warn_dup.cold+0x1c/0x28
[ 204.405474][ T7451] sysfs_create_dir_ns+0x129/0x140
[ 204.405533][ T7451] kobject_add_internal+0x104/0x310
[ 204.405560][ T7451] kobject_init_and_add+0xb2/0xf0
[ 204.405588][ T7451] ? alloc_workqueue_noprof+0xe0/0xb60
[ 204.405616][ T7451] gfs2_sys_fs_add+0xef/0x200
[ 204.405646][ T7451] gfs2_fill_super+0x896/0x1210
[ 204.405667][ T7451] ? sb_set_blocksize+0x8c/0x150
[ 204.405692][ T7451] ? setup_bdev_super+0x19d/0x330
[ 204.405715][ T7451] ? __pfx_gfs2_fill_super+0x10/0x10
[ 204.405749][ T7451] get_tree_bdev_flags+0x1c0/0x290
[ 204.405777][ T7451] gfs2_get_tree+0x26/0xd0
[ 204.405809][ T7451] vfs_get_tree+0x30/0x120
[ 204.405828][ T7451] path_mount+0x5a9/0x1350
[ 204.405861][ T7451] ? putname+0x78/0xe0
[ 204.405892][ T7451] __x64_sys_mount+0x1a3/0x1e0
[ 204.405924][ T7451] do_syscall_64+0xa4/0xf80
[ 204.405957][ T7451] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 204.405980][ T7451] RIP: 0033:0x7fc45b79c10a
[ 204.405995][ T7451] 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
[ 204.406016][ T7451] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 204.406035][ T7451] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 204.406049][ T7451] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 204.406063][ T7451] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 204.406076][ T7451] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 204.406090][ T7451] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 204.406107][ T7451]
[ 204.406116][ T7451] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 204.418772][ T7450] CPU: 0 UID: 0 PID: 7450 Comm: syz.5.146 Not tainted syzkaller #0 PREEMPT(full)
[ 204.418798][ T7450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 204.418811][ T7450] Call Trace:
[ 204.418817][ T7450]
[ 204.418823][ T7450] dump_stack_lvl+0x97/0xe0
[ 204.418850][ T7450] sysfs_warn_dup.cold+0x1c/0x28
[ 204.418882][ T7450] sysfs_create_dir_ns+0x129/0x140
[ 204.418910][ T7450] kobject_add_internal+0x104/0x310
[ 204.418936][ T7450] kobject_init_and_add+0xb2/0xf0
[ 204.418963][ T7450] ? alloc_workqueue_noprof+0xe0/0xb60
[ 204.418990][ T7450] gfs2_sys_fs_add+0xef/0x200
[ 204.419020][ T7450] gfs2_fill_super+0x896/0x1210
[ 204.419039][ T7450] ? sb_set_blocksize+0x8c/0x150
[ 204.419064][ T7450] ? setup_bdev_super+0x19d/0x330
[ 204.419086][ T7450] ? __pfx_gfs2_fill_super+0x10/0x10
[ 204.419121][ T7450] get_tree_bdev_flags+0x1c0/0x290
[ 204.419148][ T7450] gfs2_get_tree+0x26/0xd0
[ 204.419179][ T7450] vfs_get_tree+0x30/0x120
[ 204.419199][ T7450] path_mount+0x5a9/0x1350
[ 204.419230][ T7450] ? putname+0x78/0xe0
[ 204.419267][ T7450] __x64_sys_mount+0x1a3/0x1e0
[ 204.419299][ T7450] do_syscall_64+0xa4/0xf80
[ 204.419333][ T7450] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 204.419354][ T7450] RIP: 0033:0x7f37bff9c10a
[ 204.419369][ T7450] 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
[ 204.419390][ T7450] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 204.419409][ T7450] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 204.419424][ T7450] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 204.419437][ T7450] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 204.419450][ T7450] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 204.419463][ T7450] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 204.419479][ T7450]
[ 204.419490][ T7450] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 204.423666][ T7448] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 204.438747][ T7450] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 204.468744][ T7452] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 204.472978][ T7451] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 204.477842][ T7452] CPU: 1 UID: 0 PID: 7452 Comm: syz.2.143 Not tainted syzkaller #0 PREEMPT(full)
[ 204.477868][ T7452] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 204.477880][ T7452] Call Trace:
[ 204.477886][ T7452]
[ 204.477892][ T7452] dump_stack_lvl+0x97/0xe0
[ 204.477921][ T7452] sysfs_warn_dup.cold+0x1c/0x28
[ 204.477954][ T7452] sysfs_create_dir_ns+0x129/0x140
[ 204.477983][ T7452] kobject_add_internal+0x104/0x310
[ 204.478010][ T7452] kobject_init_and_add+0xb2/0xf0
[ 204.478037][ T7452] ? alloc_workqueue_noprof+0xe0/0xb60
[ 204.478066][ T7452] gfs2_sys_fs_add+0xef/0x200
[ 204.478097][ T7452] gfs2_fill_super+0x896/0x1210
[ 204.478117][ T7452] ? sb_set_blocksize+0x8c/0x150
[ 204.478142][ T7452] ? setup_bdev_super+0x19d/0x330
[ 204.478165][ T7452] ? __pfx_gfs2_fill_super+0x10/0x10
[ 204.478201][ T7452] get_tree_bdev_flags+0x1c0/0x290
[ 204.478228][ T7452] gfs2_get_tree+0x26/0xd0
[ 204.478260][ T7452] vfs_get_tree+0x30/0x120
[ 204.478280][ T7452] path_mount+0x5a9/0x1350
[ 204.478312][ T7452] ? putname+0x78/0xe0
[ 204.478343][ T7452] __x64_sys_mount+0x1a3/0x1e0
[ 204.478376][ T7452] do_syscall_64+0xa4/0xf80
[ 204.478410][ T7452] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 204.478432][ T7452] RIP: 0033:0x7f983719c10a
[ 204.478447][ T7452] 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
[ 204.478468][ T7452] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 204.478494][ T7452] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 204.478508][ T7452] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 204.478522][ T7452] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 204.478535][ T7452] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 204.478548][ T7452] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 204.478565][ T7452]
[ 204.478574][ T7452] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 204.483158][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 204.533443][ T7452] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 204.535385][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 204.678870][ T7453] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 204.697338][ T9] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 161ms
[ 204.698617][ T7453] CPU: 1 UID: 0 PID: 7453 Comm: syz.1.142 Not tainted syzkaller #0 PREEMPT(full)
[ 204.698643][ T7453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 204.698660][ T7453] Call Trace:
[ 204.698665][ T7453]
[ 204.698672][ T7453] dump_stack_lvl+0x97/0xe0
[ 204.698700][ T7453] sysfs_warn_dup.cold+0x1c/0x28
[ 204.698732][ T7453] sysfs_create_dir_ns+0x129/0x140
[ 204.698759][ T7453] kobject_add_internal+0x104/0x310
[ 204.698785][ T7453] kobject_init_and_add+0xb2/0xf0
[ 204.698809][ T7453] ? alloc_workqueue_noprof+0xe0/0xb60
[ 204.698838][ T7453] gfs2_sys_fs_add+0xef/0x200
[ 204.698868][ T7453] gfs2_fill_super+0x896/0x1210
[ 204.698888][ T7453] ? sb_set_blocksize+0x8c/0x150
[ 204.698913][ T7453] ? setup_bdev_super+0x19d/0x330
[ 204.698935][ T7453] ? __pfx_gfs2_fill_super+0x10/0x10
[ 204.698970][ T7453] get_tree_bdev_flags+0x1c0/0x290
[ 204.699001][ T7453] gfs2_get_tree+0x26/0xd0
[ 204.699033][ T7453] vfs_get_tree+0x30/0x120
[ 204.699053][ T7453] path_mount+0x5a9/0x1350
[ 204.699085][ T7453] ? putname+0x78/0xe0
[ 204.699115][ T7453] __x64_sys_mount+0x1a3/0x1e0
[ 204.699147][ T7453] do_syscall_64+0xa4/0xf80
[ 204.699188][ T7453] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 204.699211][ T7453] RIP: 0033:0x7f129df9c10a
[ 204.699225][ T7453] 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
[ 204.699245][ T7453] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 204.699264][ T7453] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 204.699279][ T7453] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 204.699292][ T7453] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 204.699305][ T7453] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 204.699318][ T7453] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 204.699334][ T7453]
[ 204.701336][ T7453] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 204.704761][ T9] gfs2: fsid=syz:syz.0: jid=0: Done
[ 204.710063][ T7453] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 204.714008][ T7454] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 204.729023][ T7449] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 204.731743][ T7448] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 204.744921][ T7449] CPU: 1 UID: 0 PID: 7449 Comm: syz.4.145 Not tainted syzkaller #0 PREEMPT(full)
[ 204.744950][ T7449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 204.744963][ T7449] Call Trace:
[ 204.744968][ T7449]
[ 204.744975][ T7449] dump_stack_lvl+0x97/0xe0
[ 204.745003][ T7449] sysfs_warn_dup.cold+0x1c/0x28
[ 204.745035][ T7449] sysfs_create_dir_ns+0x129/0x140
[ 204.745063][ T7449] kobject_add_internal+0x104/0x310
[ 204.745091][ T7449] kobject_init_and_add+0xb2/0xf0
[ 204.745119][ T7449] ? alloc_workqueue_noprof+0xe0/0xb60
[ 204.745146][ T7449] gfs2_sys_fs_add+0xef/0x200
[ 204.745178][ T7449] gfs2_fill_super+0x896/0x1210
[ 204.745198][ T7449] ? sb_set_blocksize+0x8c/0x150
[ 204.745224][ T7449] ? setup_bdev_super+0x19d/0x330
[ 204.745247][ T7449] ? __pfx_gfs2_fill_super+0x10/0x10
[ 204.745282][ T7449] get_tree_bdev_flags+0x1c0/0x290
[ 204.745308][ T7449] gfs2_get_tree+0x26/0xd0
[ 204.745341][ T7449] vfs_get_tree+0x30/0x120
[ 204.745361][ T7449] path_mount+0x5a9/0x1350
[ 204.745402][ T7449] ? putname+0x78/0xe0
[ 204.745433][ T7449] __x64_sys_mount+0x1a3/0x1e0
[ 204.745467][ T7449] do_syscall_64+0xa4/0xf80
[ 204.745500][ T7449] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 204.745522][ T7449] RIP: 0033:0x7f72ded9c10a
[ 204.745538][ T7449] 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
[ 204.745560][ T7449] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 204.745579][ T7449] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 204.745593][ T7449] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 204.745607][ T7449] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 204.745621][ T7449] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 204.745634][ T7449] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 204.745651][ T7449]
[ 204.745660][ T7449] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 204.747444][ T7454] CPU: 0 UID: 0 PID: 7454 Comm: syz.6.147 Not tainted syzkaller #0 PREEMPT(full)
[ 204.747471][ T7454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 204.747482][ T7454] Call Trace:
[ 204.747487][ T7454]
[ 204.747494][ T7454] dump_stack_lvl+0x97/0xe0
[ 204.747519][ T7454] sysfs_warn_dup.cold+0x1c/0x28
[ 204.747550][ T7454] sysfs_create_dir_ns+0x129/0x140
[ 204.747577][ T7454] kobject_add_internal+0x104/0x310
[ 204.747603][ T7454] kobject_init_and_add+0xb2/0xf0
[ 204.747629][ T7454] ? alloc_workqueue_noprof+0xe0/0xb60
[ 204.747657][ T7454] gfs2_sys_fs_add+0xef/0x200
[ 204.747687][ T7454] gfs2_fill_super+0x896/0x1210
[ 204.747707][ T7454] ? sb_set_blocksize+0x8c/0x150
[ 204.747731][ T7454] ? setup_bdev_super+0x19d/0x330
[ 204.747753][ T7454] ? __pfx_gfs2_fill_super+0x10/0x10
[ 204.747788][ T7454] get_tree_bdev_flags+0x1c0/0x290
[ 204.747815][ T7454] gfs2_get_tree+0x26/0xd0
[ 204.747847][ T7454] vfs_get_tree+0x30/0x120
[ 204.747866][ T7454] path_mount+0x5a9/0x1350
[ 204.747898][ T7454] ? putname+0x78/0xe0
[ 204.747928][ T7454] __x64_sys_mount+0x1a3/0x1e0
[ 204.747960][ T7454] do_syscall_64+0xa4/0xf80
[ 204.747994][ T7454] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 204.748015][ T7454] RIP: 0033:0x7f0c9379c10a
[ 204.748031][ T7454] 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
[ 204.748051][ T7454] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 204.748070][ T7454] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 204.748084][ T7454] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 204.748098][ T7454] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 204.748111][ T7454] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 204.748123][ T7454] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 204.748148][ T7454]
[ 204.748156][ T7454] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 204.935978][ T7449] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 204.939211][ T7454] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 205.098968][ T6620] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9381 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 205.370080][ T7440] Bluetooth: hci4: command 0x0406 tx timeout
[ 205.374723][ T6620] CPU: 1 UID: 0 PID: 6620 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT(full)
[ 205.374752][ T6620] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 205.374766][ T6620] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 205.374802][ T6620] Call Trace:
[ 205.374807][ T6620]
[ 205.374813][ T6620] dump_stack_lvl+0x97/0xe0
[ 205.374840][ T6620] gfs2_meta_check_ii.cold+0xa/0x77
[ 205.374861][ T6620] gfs2_meta_buffer+0x1a2/0x1b0
[ 205.374889][ T6620] inode_go_instantiate+0x61/0x560
[ 205.374924][ T6620] gfs2_instantiate+0xa7/0x130
[ 205.374949][ T6620] gfs2_inode_lookup+0x49a/0x520
[ 205.374969][ T6620] ? set_next_entity+0xdb/0x270
[ 205.374998][ T6620] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 205.375020][ T6620] gfs2_lookup_by_inum+0x2f/0xb0
[ 205.375042][ T6620] delete_work_func+0xa3/0x2d0
[ 205.375072][ T6620] ? __schedule+0x47f/0x1740
[ 205.375104][ T6620] process_one_work+0x26c/0x590
[ 205.375138][ T6620] worker_thread+0x2b1/0x4f0
[ 205.375169][ T6620] ? __pfx_worker_thread+0x10/0x10
[ 205.375202][ T6620] kthread+0x161/0x310
[ 205.375226][ T6620] ? __pfx_kthread+0x10/0x10
[ 205.375249][ T6620] ? __pfx_kthread+0x10/0x10
[ 205.375273][ T6620] ret_from_fork+0x23c/0x320
[ 205.375298][ T6620] ? __pfx_kthread+0x10/0x10
[ 205.375321][ T6620] ret_from_fork_asm+0x1a/0x30
[ 205.375359][ T6620]
[ 205.375365][ T6620] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 205.376668][ T6359] Bluetooth: hci3: command 0x0406 tx timeout
[ 205.380337][ T6357] Bluetooth: hci5: command 0x0406 tx timeout
[ 205.385347][ T6359] Bluetooth: hci2: command 0x0406 tx timeout
[ 205.389546][ T6357] Bluetooth: hci6: command 0x0406 tx timeout
[ 205.394299][ T7440] Bluetooth: hci1: command 0x0406 tx timeout
[ 205.399545][ T6357] Bluetooth: hci0: command 0x0406 tx timeout
[ 205.894431][ T7478] loop5: detected capacity change from 0 to 32768
[ 205.953131][ T7489] loop4: detected capacity change from 0 to 32768
[ 205.977675][ T7480] loop2: detected capacity change from 0 to 32768
[ 206.020787][ T7480] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 206.051722][ T7483] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 206.064289][ T7483] CPU: 1 UID: 0 PID: 7483 Comm: syz.3.150 Not tainted syzkaller #0 PREEMPT(full)
[ 206.064319][ T7483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 206.064332][ T7483] Call Trace:
[ 206.064337][ T7483]
[ 206.064344][ T7483] dump_stack_lvl+0x97/0xe0
[ 206.064375][ T7483] sysfs_warn_dup.cold+0x1c/0x28
[ 206.064411][ T7483] sysfs_create_dir_ns+0x129/0x140
[ 206.064442][ T7483] kobject_add_internal+0x104/0x310
[ 206.064471][ T7483] kobject_init_and_add+0xb2/0xf0
[ 206.064500][ T7483] ? alloc_workqueue_noprof+0xe0/0xb60
[ 206.064530][ T7483] gfs2_sys_fs_add+0xef/0x200
[ 206.064564][ T7483] gfs2_fill_super+0x896/0x1210
[ 206.064585][ T7483] ? sb_set_blocksize+0x8c/0x150
[ 206.064613][ T7483] ? setup_bdev_super+0x19d/0x330
[ 206.064637][ T7483] ? __pfx_gfs2_fill_super+0x10/0x10
[ 206.064676][ T7483] get_tree_bdev_flags+0x1c0/0x290
[ 206.064706][ T7483] gfs2_get_tree+0x26/0xd0
[ 206.064743][ T7483] vfs_get_tree+0x30/0x120
[ 206.064765][ T7483] path_mount+0x5a9/0x1350
[ 206.064801][ T7483] ? putname+0x78/0xe0
[ 206.064835][ T7483] __x64_sys_mount+0x1a3/0x1e0
[ 206.064871][ T7483] do_syscall_64+0xa4/0xf80
[ 206.064909][ T7483] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 206.064932][ T7483] RIP: 0033:0x7fc45b79c10a
[ 206.064949][ T7483] 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
[ 206.064972][ T7483] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 206.064993][ T7483] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 206.065015][ T7483] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 206.065028][ T7483] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 206.065042][ T7483] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 206.065056][ T7483] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 206.065074][ T7483]
[ 206.065084][ T7483] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 206.075911][ T7480] CPU: 0 UID: 0 PID: 7480 Comm: syz.2.148 Not tainted syzkaller #0 PREEMPT(full)
[ 206.075941][ T7480] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 206.075953][ T7480] Call Trace:
[ 206.075958][ T7480]
[ 206.075965][ T7480] dump_stack_lvl+0x97/0xe0
[ 206.075992][ T7480] sysfs_warn_dup.cold+0x1c/0x28
[ 206.076024][ T7480] sysfs_create_dir_ns+0x129/0x140
[ 206.076051][ T7480] kobject_add_internal+0x104/0x310
[ 206.076079][ T7480] kobject_init_and_add+0xb2/0xf0
[ 206.076105][ T7480] ? alloc_workqueue_noprof+0xe0/0xb60
[ 206.076133][ T7480] gfs2_sys_fs_add+0xef/0x200
[ 206.076164][ T7480] gfs2_fill_super+0x896/0x1210
[ 206.076184][ T7480] ? sb_set_blocksize+0x8c/0x150
[ 206.076210][ T7480] ? setup_bdev_super+0x19d/0x330
[ 206.076232][ T7480] ? __pfx_gfs2_fill_super+0x10/0x10
[ 206.076275][ T7480] get_tree_bdev_flags+0x1c0/0x290
[ 206.076302][ T7480] gfs2_get_tree+0x26/0xd0
[ 206.076334][ T7480] vfs_get_tree+0x30/0x120
[ 206.076354][ T7480] path_mount+0x5a9/0x1350
[ 206.076390][ T7480] ? putname+0x78/0xe0
[ 206.076422][ T7480] __x64_sys_mount+0x1a3/0x1e0
[ 206.076454][ T7480] do_syscall_64+0xa4/0xf80
[ 206.076488][ T7480] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 206.076510][ T7480] RIP: 0033:0x7f983719c10a
[ 206.076527][ T7480] 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
[ 206.076548][ T7480] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 206.076568][ T7480] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 206.076582][ T7480] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 206.076596][ T7480] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 206.076609][ T7480] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 206.076622][ T7480] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 206.076638][ T7480]
[ 206.076647][ T7480] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 206.124120][ T7483] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 206.308864][ T7478] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 206.342827][ T7480] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 206.368761][ T7478] CPU: 0 UID: 0 PID: 7478 Comm: syz.5.149 Not tainted syzkaller #0 PREEMPT(full)
[ 206.368788][ T7478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 206.368800][ T7478] Call Trace:
[ 206.368808][ T7478]
[ 206.368814][ T7478] dump_stack_lvl+0x97/0xe0
[ 206.368842][ T7478] sysfs_warn_dup.cold+0x1c/0x28
[ 206.368875][ T7478] sysfs_create_dir_ns+0x129/0x140
[ 206.368903][ T7478] kobject_add_internal+0x104/0x310
[ 206.368931][ T7478] kobject_init_and_add+0xb2/0xf0
[ 206.368962][ T7478] ? alloc_workqueue_noprof+0xe0/0xb60
[ 206.368990][ T7478] gfs2_sys_fs_add+0xef/0x200
[ 206.369021][ T7478] gfs2_fill_super+0x896/0x1210
[ 206.369041][ T7478] ? sb_set_blocksize+0x8c/0x150
[ 206.369065][ T7478] ? setup_bdev_super+0x19d/0x330
[ 206.369088][ T7478] ? __pfx_gfs2_fill_super+0x10/0x10
[ 206.369122][ T7478] get_tree_bdev_flags+0x1c0/0x290
[ 206.369150][ T7478] gfs2_get_tree+0x26/0xd0
[ 206.369181][ T7478] vfs_get_tree+0x30/0x120
[ 206.369202][ T7478] path_mount+0x5a9/0x1350
[ 206.369234][ T7478] ? putname+0x78/0xe0
[ 206.369265][ T7478] __x64_sys_mount+0x1a3/0x1e0
[ 206.369303][ T7478] do_syscall_64+0xa4/0xf80
[ 206.369338][ T7478] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 206.369359][ T7478] RIP: 0033:0x7f37bff9c10a
[ 206.369375][ T7478] 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
[ 206.369396][ T7478] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 206.369415][ T7478] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 206.369429][ T7478] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 206.369444][ T7478] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 206.369457][ T7478] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 206.369470][ T7478] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 206.369487][ T7478]
[ 206.369545][ T7478] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 206.389642][ T7489] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 206.389658][ T7489] CPU: 1 UID: 0 PID: 7489 Comm: syz.4.153 Not tainted syzkaller #0 PREEMPT(full)
[ 206.389681][ T7489] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 206.389694][ T7489] Call Trace:
[ 206.389699][ T7489]
[ 206.389705][ T7489] dump_stack_lvl+0x97/0xe0
[ 206.389733][ T7489] sysfs_warn_dup.cold+0x1c/0x28
[ 206.389766][ T7489] sysfs_create_dir_ns+0x129/0x140
[ 206.389793][ T7489] kobject_add_internal+0x104/0x310
[ 206.389819][ T7489] kobject_init_and_add+0xb2/0xf0
[ 206.389845][ T7489] ? alloc_workqueue_noprof+0xe0/0xb60
[ 206.389872][ T7489] gfs2_sys_fs_add+0xef/0x200
[ 206.389902][ T7489] gfs2_fill_super+0x896/0x1210
[ 206.389921][ T7489] ? sb_set_blocksize+0x8c/0x150
[ 206.389946][ T7489] ? setup_bdev_super+0x19d/0x330
[ 206.389980][ T7489] ? __pfx_gfs2_fill_super+0x10/0x10
[ 206.390015][ T7489] get_tree_bdev_flags+0x1c0/0x290
[ 206.390048][ T7489] gfs2_get_tree+0x26/0xd0
[ 206.390080][ T7489] vfs_get_tree+0x30/0x120
[ 206.390099][ T7489] path_mount+0x5a9/0x1350
[ 206.390131][ T7489] ? putname+0x78/0xe0
[ 206.390162][ T7489] __x64_sys_mount+0x1a3/0x1e0
[ 206.390194][ T7489] do_syscall_64+0xa4/0xf80
[ 206.390228][ T7489] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 206.390250][ T7489] RIP: 0033:0x7f72ded9c10a
[ 206.390266][ T7489] 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
[ 206.390287][ T7489] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 206.390306][ T7489] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 206.390321][ T7489] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 206.390335][ T7489] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 206.390348][ T7489] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 206.390362][ T7489] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 206.390379][ T7489]
[ 206.390387][ T7489] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 206.398707][ T7488] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 206.402426][ T7489] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 206.422022][ T7478] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 206.429679][ T7488] CPU: 1 UID: 0 PID: 7488 Comm: syz.1.152 Not tainted syzkaller #0 PREEMPT(full)
[ 206.429706][ T7488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 206.429718][ T7488] Call Trace:
[ 206.429723][ T7488]
[ 206.429730][ T7488] dump_stack_lvl+0x97/0xe0
[ 206.429758][ T7488] sysfs_warn_dup.cold+0x1c/0x28
[ 206.429790][ T7488] sysfs_create_dir_ns+0x129/0x140
[ 206.429817][ T7488] kobject_add_internal+0x104/0x310
[ 206.429844][ T7488] kobject_init_and_add+0xb2/0xf0
[ 206.429871][ T7488] ? alloc_workqueue_noprof+0xe0/0xb60
[ 206.429899][ T7488] gfs2_sys_fs_add+0xef/0x200
[ 206.429929][ T7488] gfs2_fill_super+0x896/0x1210
[ 206.429949][ T7488] ? sb_set_blocksize+0x8c/0x150
[ 206.429987][ T7488] ? setup_bdev_super+0x19d/0x330
[ 206.430009][ T7488] ? __pfx_gfs2_fill_super+0x10/0x10
[ 206.430049][ T7488] get_tree_bdev_flags+0x1c0/0x290
[ 206.430076][ T7488] gfs2_get_tree+0x26/0xd0
[ 206.430108][ T7488] vfs_get_tree+0x30/0x120
[ 206.430128][ T7488] path_mount+0x5a9/0x1350
[ 206.430159][ T7488] ? putname+0x78/0xe0
[ 206.430190][ T7488] __x64_sys_mount+0x1a3/0x1e0
[ 206.430222][ T7488] do_syscall_64+0xa4/0xf80
[ 206.430255][ T7488] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 206.430277][ T7488] RIP: 0033:0x7f129df9c10a
[ 206.430292][ T7488] 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
[ 206.430312][ T7488] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 206.430331][ T7488] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 206.430345][ T7488] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 206.430358][ T7488] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 206.430371][ T7488] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 206.430384][ T7488] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 206.430401][ T7488]
[ 206.430411][ T7488] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 206.500105][ T7491] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 206.501209][ T7488] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 206.558787][ T7491] CPU: 0 UID: 0 PID: 7491 Comm: syz.6.154 Not tainted syzkaller #0 PREEMPT(full)
[ 206.558815][ T7491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 206.558827][ T7491] Call Trace:
[ 206.558834][ T7491]
[ 206.558841][ T7491] dump_stack_lvl+0x97/0xe0
[ 206.558869][ T7491] sysfs_warn_dup.cold+0x1c/0x28
[ 206.558902][ T7491] sysfs_create_dir_ns+0x129/0x140
[ 206.558930][ T7491] kobject_add_internal+0x104/0x310
[ 206.558957][ T7491] kobject_init_and_add+0xb2/0xf0
[ 206.558985][ T7491] ? alloc_workqueue_noprof+0xe0/0xb60
[ 206.559013][ T7491] gfs2_sys_fs_add+0xef/0x200
[ 206.559044][ T7491] gfs2_fill_super+0x896/0x1210
[ 206.559070][ T7491] ? sb_set_blocksize+0x8c/0x150
[ 206.559095][ T7491] ? setup_bdev_super+0x19d/0x330
[ 206.559118][ T7491] ? __pfx_gfs2_fill_super+0x10/0x10
[ 206.559152][ T7491] get_tree_bdev_flags+0x1c0/0x290
[ 206.559180][ T7491] gfs2_get_tree+0x26/0xd0
[ 206.559212][ T7491] vfs_get_tree+0x30/0x120
[ 206.559232][ T7491] path_mount+0x5a9/0x1350
[ 206.559264][ T7491] ? putname+0x78/0xe0
[ 206.559295][ T7491] __x64_sys_mount+0x1a3/0x1e0
[ 206.559339][ T7491] do_syscall_64+0xa4/0xf80
[ 206.559378][ T7491] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 206.559408][ T7491] RIP: 0033:0x7f0c9379c10a
[ 206.559429][ T7491] 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
[ 206.559453][ T7491] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 206.559476][ T7491] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 206.559503][ T7491] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 206.559524][ T7491] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 206.559540][ T7491] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 206.559553][ T7491] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 206.559570][ T7491]
[ 206.559581][ T7491] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 207.391095][ T7491] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 210.470057][ T42] gfs2: fsid=syz:syz.0: file system withdrawn
[ 210.567505][ T7510] set_capacity_and_notify: 3 callbacks suppressed
[ 210.567517][ T7510] loop0: detected capacity change from 0 to 32768
[ 210.581981][ T7510] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 210.590209][ T7510] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 210.600801][ T7510] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 210.609414][ T6620] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 210.616291][ T6620] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 210.636228][ T6620] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 19ms
[ 210.644214][ T6620] gfs2: fsid=syz:syz.0: jid=0: Done
[ 210.649690][ T7510] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 210.709363][ T23] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9390 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 210.725164][ T5841] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9387 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 210.740883][ T6620] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9381 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 210.756493][ T23] CPU: 1 UID: 0 PID: 23 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT(full)
[ 210.756518][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 210.756531][ T23] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 210.756565][ T23] Call Trace:
[ 210.756571][ T23]
[ 210.756578][ T23] dump_stack_lvl+0x97/0xe0
[ 210.756604][ T23] gfs2_meta_check_ii.cold+0xa/0x77
[ 210.756635][ T23] gfs2_meta_buffer+0x1a2/0x1b0
[ 210.756664][ T23] inode_go_instantiate+0x61/0x560
[ 210.756700][ T23] gfs2_instantiate+0xa7/0x130
[ 210.756726][ T23] gfs2_inode_lookup+0x49a/0x520
[ 210.756748][ T23] ? set_next_entity+0xdb/0x270
[ 210.756783][ T23] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 210.756806][ T23] gfs2_lookup_by_inum+0x2f/0xb0
[ 210.756829][ T23] delete_work_func+0xa3/0x2d0
[ 210.756861][ T23] ? __schedule+0x47f/0x1740
[ 210.756893][ T23] ? wg_packet_decrypt_worker+0x1b4/0x2b0
[ 210.756921][ T23] process_one_work+0x26c/0x590
[ 210.756957][ T23] worker_thread+0x2b1/0x4f0
[ 210.756990][ T23] ? __pfx_worker_thread+0x10/0x10
[ 210.757026][ T23] kthread+0x161/0x310
[ 210.757049][ T23] ? __pfx_kthread+0x10/0x10
[ 210.757073][ T23] ? __pfx_kthread+0x10/0x10
[ 210.757095][ T23] ret_from_fork+0x23c/0x320
[ 210.757116][ T23] ? __pfx_kthread+0x10/0x10
[ 210.757129][ T23] ret_from_fork_asm+0x1a/0x30
[ 210.757146][ T23]
[ 210.757165][ T23] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 215.909932][ T6620] gfs2: fsid=syz:syz.0: file system withdrawn
2026/01/30 11:37:20 executed programs: 152
[ 218.468283][ T7525] loop2: detected capacity change from 0 to 32768
[ 218.471330][ T7521] loop3: detected capacity change from 0 to 32768
[ 218.485731][ T7530] loop4: detected capacity change from 0 to 32768
[ 218.494416][ T7526] loop6: detected capacity change from 0 to 32768
[ 218.497006][ T7523] loop5: detected capacity change from 0 to 32768
[ 218.509557][ T7520] loop1: detected capacity change from 0 to 32768
[ 218.519867][ T7525] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 218.531602][ T7529] loop0: detected capacity change from 0 to 32768
[ 218.532448][ T7520] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 218.547558][ T7521] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 218.555268][ T7525] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 218.559277][ T7521] CPU: 0 UID: 0 PID: 7521 Comm: syz.3.158 Not tainted syzkaller #0 PREEMPT(full)
[ 218.559306][ T7521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 218.559318][ T7521] Call Trace:
[ 218.559323][ T7521]
[ 218.559329][ T7521] dump_stack_lvl+0x97/0xe0
[ 218.559355][ T7521] sysfs_warn_dup.cold+0x1c/0x28
[ 218.559387][ T7521] sysfs_create_dir_ns+0x129/0x140
[ 218.559415][ T7521] kobject_add_internal+0x104/0x310
[ 218.559440][ T7521] kobject_init_and_add+0xb2/0xf0
[ 218.559465][ T7521] ? alloc_workqueue_noprof+0xe0/0xb60
[ 218.559497][ T7521] gfs2_sys_fs_add+0xef/0x200
[ 218.559527][ T7521] gfs2_fill_super+0x896/0x1210
[ 218.559547][ T7521] ? sb_set_blocksize+0x8c/0x150
[ 218.559573][ T7521] ? setup_bdev_super+0x19d/0x330
[ 218.559596][ T7521] ? __pfx_gfs2_fill_super+0x10/0x10
[ 218.559629][ T7521] get_tree_bdev_flags+0x1c0/0x290
[ 218.559656][ T7521] gfs2_get_tree+0x26/0xd0
[ 218.559688][ T7521] vfs_get_tree+0x30/0x120
[ 218.559707][ T7521] path_mount+0x5a9/0x1350
[ 218.559738][ T7521] ? putname+0x78/0xe0
[ 218.559769][ T7521] __x64_sys_mount+0x1a3/0x1e0
[ 218.559802][ T7521] do_syscall_64+0xa4/0xf80
[ 218.559835][ T7521] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 218.559856][ T7521] RIP: 0033:0x7fc45b79c10a
[ 218.559871][ T7521] 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
[ 218.559892][ T7521] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 218.559912][ T7521] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 218.559932][ T7521] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 218.559946][ T7521] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 218.559959][ T7521] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 218.559972][ T7521] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 218.559989][ T7521]
[ 218.559999][ T7521] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 218.562668][ T7520] CPU: 1 UID: 0 PID: 7520 Comm: syz.1.156 Not tainted syzkaller #0 PREEMPT(full)
[ 218.562696][ T7520] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 218.562709][ T7520] Call Trace:
[ 218.562714][ T7520]
[ 218.562721][ T7520] dump_stack_lvl+0x97/0xe0
[ 218.562747][ T7520] sysfs_warn_dup.cold+0x1c/0x28
[ 218.562780][ T7520] sysfs_create_dir_ns+0x129/0x140
[ 218.562809][ T7520] kobject_add_internal+0x104/0x310
[ 218.562835][ T7520] kobject_init_and_add+0xb2/0xf0
[ 218.562862][ T7520] ? alloc_workqueue_noprof+0xe0/0xb60
[ 218.562890][ T7520] gfs2_sys_fs_add+0xef/0x200
[ 218.562921][ T7520] gfs2_fill_super+0x896/0x1210
[ 218.562942][ T7520] ? sb_set_blocksize+0x8c/0x150
[ 218.562996][ T7520] ? setup_bdev_super+0x19d/0x330
[ 218.563019][ T7520] ? __pfx_gfs2_fill_super+0x10/0x10
[ 218.563055][ T7520] get_tree_bdev_flags+0x1c0/0x290
[ 218.563082][ T7520] gfs2_get_tree+0x26/0xd0
[ 218.563115][ T7520] vfs_get_tree+0x30/0x120
[ 218.563135][ T7520] path_mount+0x5a9/0x1350
[ 218.563174][ T7520] ? putname+0x78/0xe0
[ 218.563205][ T7520] __x64_sys_mount+0x1a3/0x1e0
[ 218.563238][ T7520] do_syscall_64+0xa4/0xf80
[ 218.563279][ T7520] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 218.563302][ T7520] RIP: 0033:0x7f129df9c10a
[ 218.563318][ T7520] 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
[ 218.563339][ T7520] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 218.563358][ T7520] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 218.563373][ T7520] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 218.563388][ T7520] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 218.563401][ T7520] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 218.563415][ T7520] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 218.563432][ T7520]
[ 218.563444][ T7520] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 218.602239][ T7525] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 218.604133][ T7526] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 218.609332][ T7520] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 218.614546][ T7526] CPU: 1 UID: 0 PID: 7526 Comm: syz.6.161 Not tainted syzkaller #0 PREEMPT(full)
[ 218.614573][ T7526] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 218.614586][ T7526] Call Trace:
[ 218.614591][ T7526]
[ 218.614599][ T7526] dump_stack_lvl+0x97/0xe0
[ 218.614626][ T7526] sysfs_warn_dup.cold+0x1c/0x28
[ 218.614659][ T7526] sysfs_create_dir_ns+0x129/0x140
[ 218.614687][ T7526] kobject_add_internal+0x104/0x310
[ 218.614714][ T7526] kobject_init_and_add+0xb2/0xf0
[ 218.614742][ T7526] ? alloc_workqueue_noprof+0xe0/0xb60
[ 218.614770][ T7526] gfs2_sys_fs_add+0xef/0x200
[ 218.614801][ T7526] gfs2_fill_super+0x896/0x1210
[ 218.614821][ T7526] ? sb_set_blocksize+0x8c/0x150
[ 218.614846][ T7526] ? setup_bdev_super+0x19d/0x330
[ 218.614868][ T7526] ? __pfx_gfs2_fill_super+0x10/0x10
[ 218.614903][ T7526] get_tree_bdev_flags+0x1c0/0x290
[ 218.614930][ T7526] gfs2_get_tree+0x26/0xd0
[ 218.614969][ T7526] vfs_get_tree+0x30/0x120
[ 218.614989][ T7526] path_mount+0x5a9/0x1350
[ 218.615022][ T7526] ? putname+0x78/0xe0
[ 218.615053][ T7526] __x64_sys_mount+0x1a3/0x1e0
[ 218.615085][ T7526] do_syscall_64+0xa4/0xf80
[ 218.615119][ T7526] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 218.615146][ T7526] RIP: 0033:0x7f0c9379c10a
[ 218.615162][ T7526] 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
[ 218.615182][ T7526] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 218.615201][ T7526] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 218.615216][ T7526] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 218.615230][ T7526] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 218.615243][ T7526] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 218.615257][ T7526] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 218.615273][ T7526]
[ 218.615284][ T7526] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 218.628714][ T7521] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 218.631338][ T7526] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 218.732170][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 218.749008][ T7523] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 218.751507][ T7530] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 218.768928][ T7523] CPU: 1 UID: 0 PID: 7523 Comm: syz.5.160 Not tainted syzkaller #0 PREEMPT(full)
[ 218.768957][ T7523] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 218.768970][ T7523] Call Trace:
[ 218.768976][ T7523]
[ 218.768983][ T7523] dump_stack_lvl+0x97/0xe0
[ 218.769008][ T7523] sysfs_warn_dup.cold+0x1c/0x28
[ 218.769041][ T7523] sysfs_create_dir_ns+0x129/0x140
[ 218.769070][ T7523] kobject_add_internal+0x104/0x310
[ 218.769097][ T7523] kobject_init_and_add+0xb2/0xf0
[ 218.769139][ T7523] ? alloc_workqueue_noprof+0xe0/0xb60
[ 218.769168][ T7523] gfs2_sys_fs_add+0xef/0x200
[ 218.769200][ T7523] gfs2_fill_super+0x896/0x1210
[ 218.769221][ T7523] ? sb_set_blocksize+0x8c/0x150
[ 218.769247][ T7523] ? setup_bdev_super+0x19d/0x330
[ 218.769270][ T7523] ? __pfx_gfs2_fill_super+0x10/0x10
[ 218.769306][ T7523] get_tree_bdev_flags+0x1c0/0x290
[ 218.769333][ T7523] gfs2_get_tree+0x26/0xd0
[ 218.769366][ T7523] vfs_get_tree+0x30/0x120
[ 218.769386][ T7523] path_mount+0x5a9/0x1350
[ 218.769420][ T7523] ? putname+0x78/0xe0
[ 218.769451][ T7523] __x64_sys_mount+0x1a3/0x1e0
[ 218.769484][ T7523] do_syscall_64+0xa4/0xf80
[ 218.769520][ T7523] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 218.769543][ T7523] RIP: 0033:0x7f37bff9c10a
[ 218.769559][ T7523] 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
[ 218.769580][ T7523] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 218.769600][ T7523] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 218.769614][ T7523] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 218.769628][ T7523] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 218.769642][ T7523] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 218.769656][ T7523] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 218.769673][ T7523]
[ 218.769684][ T7523] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 218.778831][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 218.800120][ T7523] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 218.809146][ T7529] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 218.811473][ T7530] CPU: 1 UID: 0 PID: 7530 Comm: syz.4.159 Not tainted syzkaller #0 PREEMPT(full)
[ 218.811500][ T7530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 218.811513][ T7530] Call Trace:
[ 218.811519][ T7530]
[ 218.811525][ T7530] dump_stack_lvl+0x97/0xe0
[ 218.811554][ T7530] sysfs_warn_dup.cold+0x1c/0x28
[ 218.811587][ T7530] sysfs_create_dir_ns+0x129/0x140
[ 218.811616][ T7530] kobject_add_internal+0x104/0x310
[ 218.811644][ T7530] kobject_init_and_add+0xb2/0xf0
[ 218.811672][ T7530] ? alloc_workqueue_noprof+0xe0/0xb60
[ 218.811701][ T7530] gfs2_sys_fs_add+0xef/0x200
[ 218.811733][ T7530] gfs2_fill_super+0x896/0x1210
[ 218.811754][ T7530] ? sb_set_blocksize+0x8c/0x150
[ 218.811781][ T7530] ? setup_bdev_super+0x19d/0x330
[ 218.811805][ T7530] ? __pfx_gfs2_fill_super+0x10/0x10
[ 218.811842][ T7530] get_tree_bdev_flags+0x1c0/0x290
[ 218.811871][ T7530] gfs2_get_tree+0x26/0xd0
[ 218.811904][ T7530] vfs_get_tree+0x30/0x120
[ 218.811925][ T7530] path_mount+0x5a9/0x1350
[ 218.811962][ T7530] ? putname+0x78/0xe0
[ 218.811994][ T7530] __x64_sys_mount+0x1a3/0x1e0
[ 218.812028][ T7530] do_syscall_64+0xa4/0xf80
[ 218.812063][ T7530] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 218.812086][ T7530] RIP: 0033:0x7f72ded9c10a
[ 218.812102][ T7530] 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
[ 218.812123][ T7530] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 218.812143][ T7530] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 218.812159][ T7530] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 218.812174][ T7530] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 218.812188][ T7530] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 218.812202][ T7530] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 218.812235][ T7530]
[ 218.812245][ T7530] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 218.898396][ T9] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 119ms
[ 218.902480][ T7529] CPU: 1 UID: 0 PID: 7529 Comm: syz.0.155 Not tainted syzkaller #0 PREEMPT(full)
[ 218.902508][ T7529] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 218.902521][ T7529] Call Trace:
[ 218.902527][ T7529]
[ 218.902533][ T7529] dump_stack_lvl+0x97/0xe0
[ 218.902562][ T7529] sysfs_warn_dup.cold+0x1c/0x28
[ 218.902596][ T7529] sysfs_create_dir_ns+0x129/0x140
[ 218.902625][ T7529] kobject_add_internal+0x104/0x310
[ 218.902652][ T7529] kobject_init_and_add+0xb2/0xf0
[ 218.902680][ T7529] ? alloc_workqueue_noprof+0xe0/0xb60
[ 218.902709][ T7529] gfs2_sys_fs_add+0xef/0x200
[ 218.902740][ T7529] gfs2_fill_super+0x896/0x1210
[ 218.902761][ T7529] ? sb_set_blocksize+0x8c/0x150
[ 218.902787][ T7529] ? setup_bdev_super+0x19d/0x330
[ 218.902810][ T7529] ? __pfx_gfs2_fill_super+0x10/0x10
[ 218.902847][ T7529] get_tree_bdev_flags+0x1c0/0x290
[ 218.902875][ T7529] gfs2_get_tree+0x26/0xd0
[ 218.902908][ T7529] vfs_get_tree+0x30/0x120
[ 218.902928][ T7529] path_mount+0x5a9/0x1350
[ 218.902961][ T7529] ? putname+0x78/0xe0
[ 218.902992][ T7529] __x64_sys_mount+0x1a3/0x1e0
[ 218.903025][ T7529] do_syscall_64+0xa4/0xf80
[ 218.903059][ T7529] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 218.903081][ T7529] RIP: 0033:0x7f61a1b9c10a
[ 218.903098][ T7529] 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
[ 218.903118][ T7529] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 218.903138][ T7529] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 218.903160][ T7529] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 218.903174][ T7529] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 218.903188][ T7529] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 218.903202][ T7529] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 218.903218][ T7529]
[ 218.903229][ T7529] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 218.922080][ T9] gfs2: fsid=syz:syz.0: jid=0: Done
[ 218.998679][ T7530] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 219.004993][ T7525] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 219.130781][ T7529] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 219.411048][ T5912] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9387 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 219.717096][ T7555] loop6: detected capacity change from 0 to 32768
[ 219.724176][ T6400] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9386 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 219.811850][ T7557] loop5: detected capacity change from 0 to 32768
[ 219.812388][ T797] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9390 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 220.015507][ T9] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9381 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 220.039607][ T9] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full)
[ 220.039636][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 220.039650][ T9] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 220.039686][ T9] Call Trace:
[ 220.039693][ T9]
[ 220.039700][ T9] dump_stack_lvl+0x97/0xe0
[ 220.039725][ T9] gfs2_meta_check_ii.cold+0xa/0x77
[ 220.039749][ T9] gfs2_meta_buffer+0x1a2/0x1b0
[ 220.039776][ T9] inode_go_instantiate+0x61/0x560
[ 220.039811][ T9] gfs2_instantiate+0xa7/0x130
[ 220.039836][ T9] gfs2_inode_lookup+0x49a/0x520
[ 220.039858][ T9] ? set_next_entity+0xdb/0x270
[ 220.039886][ T9] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 220.039910][ T9] gfs2_lookup_by_inum+0x2f/0xb0
[ 220.039932][ T9] delete_work_func+0xa3/0x2d0
[ 220.039963][ T9] ? __schedule+0x47f/0x1740
[ 220.039993][ T9] ? __queue_delayed_work+0x196/0x240
[ 220.040025][ T9] process_one_work+0x26c/0x590
[ 220.040059][ T9] worker_thread+0x2b1/0x4f0
[ 220.040092][ T9] ? __pfx_worker_thread+0x10/0x10
[ 220.040126][ T9] kthread+0x161/0x310
[ 220.040150][ T9] ? __pfx_kthread+0x10/0x10
[ 220.040173][ T9] ? __pfx_kthread+0x10/0x10
[ 220.040197][ T9] ret_from_fork+0x23c/0x320
[ 220.040222][ T9] ? __pfx_kthread+0x10/0x10
[ 220.040246][ T9] ret_from_fork_asm+0x1a/0x30
[ 220.040278][ T9]
[ 220.040284][ T9] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 220.105359][ T7556] loop3: detected capacity change from 0 to 32768
[ 220.170923][ T7557] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 220.210272][ T7555] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 220.221874][ T7556] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 220.222200][ T7557] CPU: 0 UID: 0 PID: 7557 Comm: syz.5.164 Not tainted syzkaller #0 PREEMPT(full)
[ 220.222227][ T7557] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 220.222239][ T7557] Call Trace:
[ 220.222245][ T7557]
[ 220.222252][ T7557] dump_stack_lvl+0x97/0xe0
[ 220.222281][ T7557] sysfs_warn_dup.cold+0x1c/0x28
[ 220.222314][ T7557] sysfs_create_dir_ns+0x129/0x140
[ 220.222342][ T7557] kobject_add_internal+0x104/0x310
[ 220.222369][ T7557] kobject_init_and_add+0xb2/0xf0
[ 220.222396][ T7557] ? alloc_workqueue_noprof+0xe0/0xb60
[ 220.222431][ T7557] gfs2_sys_fs_add+0xef/0x200
[ 220.222462][ T7557] gfs2_fill_super+0x896/0x1210
[ 220.222482][ T7557] ? sb_set_blocksize+0x8c/0x150
[ 220.222508][ T7557] ? setup_bdev_super+0x19d/0x330
[ 220.222531][ T7557] ? __pfx_gfs2_fill_super+0x10/0x10
[ 220.222568][ T7557] get_tree_bdev_flags+0x1c0/0x290
[ 220.222596][ T7557] gfs2_get_tree+0x26/0xd0
[ 220.222629][ T7557] vfs_get_tree+0x30/0x120
[ 220.222649][ T7557] path_mount+0x5a9/0x1350
[ 220.222681][ T7557] ? putname+0x78/0xe0
[ 220.222712][ T7557] __x64_sys_mount+0x1a3/0x1e0
[ 220.222745][ T7557] do_syscall_64+0xa4/0xf80
[ 220.222779][ T7557] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 220.222801][ T7557] RIP: 0033:0x7f37bff9c10a
[ 220.222817][ T7557] 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
[ 220.222844][ T7557] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 220.222864][ T7557] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 220.222878][ T7557] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 220.222898][ T7557] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 220.222916][ T7557] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 220.222929][ T7557] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 220.222946][ T7557]
[ 220.222957][ T7557] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 220.369788][ T7555] CPU: 1 UID: 0 PID: 7555 Comm: syz.6.165 Not tainted syzkaller #0 PREEMPT(full)
[ 220.369818][ T7555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 220.369831][ T7555] Call Trace:
[ 220.369837][ T7555]
[ 220.369843][ T7555] dump_stack_lvl+0x97/0xe0
[ 220.369872][ T7555] sysfs_warn_dup.cold+0x1c/0x28
[ 220.369905][ T7555] sysfs_create_dir_ns+0x129/0x140
[ 220.369933][ T7555] kobject_add_internal+0x104/0x310
[ 220.369961][ T7555] kobject_init_and_add+0xb2/0xf0
[ 220.370037][ T7555] ? alloc_workqueue_noprof+0xe0/0xb60
[ 220.370066][ T7555] gfs2_sys_fs_add+0xef/0x200
[ 220.370100][ T7555] gfs2_fill_super+0x896/0x1210
[ 220.370120][ T7555] ? sb_set_blocksize+0x8c/0x150
[ 220.370146][ T7555] ? setup_bdev_super+0x19d/0x330
[ 220.370169][ T7555] ? __pfx_gfs2_fill_super+0x10/0x10
[ 220.370204][ T7555] get_tree_bdev_flags+0x1c0/0x290
[ 220.370231][ T7555] gfs2_get_tree+0x26/0xd0
[ 220.370264][ T7555] vfs_get_tree+0x30/0x120
[ 220.370284][ T7555] path_mount+0x5a9/0x1350
[ 220.370317][ T7555] ? putname+0x78/0xe0
[ 220.370348][ T7555] __x64_sys_mount+0x1a3/0x1e0
[ 220.370381][ T7555] do_syscall_64+0xa4/0xf80
[ 220.370415][ T7555] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 220.370437][ T7555] RIP: 0033:0x7f0c9379c10a
[ 220.370453][ T7555] 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
[ 220.370474][ T7555] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 220.370494][ T7555] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 220.370508][ T7555] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 220.370522][ T7555] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 220.370536][ T7555] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 220.370550][ T7555] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 220.370567][ T7555]
[ 220.370590][ T7555] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 220.390453][ T7556] CPU: 0 UID: 0 PID: 7556 Comm: syz.3.162 Not tainted syzkaller #0 PREEMPT(full)
[ 220.390483][ T7556] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 220.390496][ T7556] Call Trace:
[ 220.390502][ T7556]
[ 220.390509][ T7556] dump_stack_lvl+0x97/0xe0
[ 220.390537][ T7556] sysfs_warn_dup.cold+0x1c/0x28
[ 220.390569][ T7556] sysfs_create_dir_ns+0x129/0x140
[ 220.390594][ T7556] kobject_add_internal+0x104/0x310
[ 220.390618][ T7556] kobject_init_and_add+0xb2/0xf0
[ 220.390646][ T7556] ? alloc_workqueue_noprof+0xe0/0xb60
[ 220.390674][ T7556] gfs2_sys_fs_add+0xef/0x200
[ 220.390705][ T7556] gfs2_fill_super+0x896/0x1210
[ 220.390726][ T7556] ? sb_set_blocksize+0x8c/0x150
[ 220.390760][ T7556] ? setup_bdev_super+0x19d/0x330
[ 220.390782][ T7556] ? __pfx_gfs2_fill_super+0x10/0x10
[ 220.390817][ T7556] get_tree_bdev_flags+0x1c0/0x290
[ 220.390844][ T7556] gfs2_get_tree+0x26/0xd0
[ 220.390875][ T7556] vfs_get_tree+0x30/0x120
[ 220.390895][ T7556] path_mount+0x5a9/0x1350
[ 220.390928][ T7556] ? putname+0x78/0xe0
[ 220.390959][ T7556] __x64_sys_mount+0x1a3/0x1e0
[ 220.390991][ T7556] do_syscall_64+0xa4/0xf80
[ 220.391024][ T7556] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 220.391047][ T7556] RIP: 0033:0x7fc45b79c10a
[ 220.391063][ T7556] 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
[ 220.391083][ T7556] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 220.391103][ T7556] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 220.391117][ T7556] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 220.391131][ T7556] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 220.391145][ T7556] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 220.391158][ T7556] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 220.391175][ T7556]
[ 220.391186][ T7556] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 220.399097][ T7557] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 220.415923][ T7555] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 220.423217][ T7558] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 220.481409][ T7556] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 220.486822][ T7558] CPU: 1 UID: 0 PID: 7558 Comm: syz.1.163 Not tainted syzkaller #0 PREEMPT(full)
[ 220.486850][ T7558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 220.486863][ T7558] Call Trace:
[ 220.486869][ T7558]
[ 220.486876][ T7558] dump_stack_lvl+0x97/0xe0
[ 220.486904][ T7558] sysfs_warn_dup.cold+0x1c/0x28
[ 220.486937][ T7558] sysfs_create_dir_ns+0x129/0x140
[ 220.486966][ T7558] kobject_add_internal+0x104/0x310
[ 220.487004][ T7558] kobject_init_and_add+0xb2/0xf0
[ 220.487032][ T7558] ? alloc_workqueue_noprof+0xe0/0xb60
[ 220.487061][ T7558] gfs2_sys_fs_add+0xef/0x200
[ 220.487093][ T7558] gfs2_fill_super+0x896/0x1210
[ 220.487113][ T7558] ? sb_set_blocksize+0x8c/0x150
[ 220.487138][ T7558] ? setup_bdev_super+0x19d/0x330
[ 220.487161][ T7558] ? __pfx_gfs2_fill_super+0x10/0x10
[ 220.487195][ T7558] get_tree_bdev_flags+0x1c0/0x290
[ 220.487222][ T7558] gfs2_get_tree+0x26/0xd0
[ 220.487255][ T7558] vfs_get_tree+0x30/0x120
[ 220.487275][ T7558] path_mount+0x5a9/0x1350
[ 220.487308][ T7558] ? putname+0x78/0xe0
[ 220.487338][ T7558] __x64_sys_mount+0x1a3/0x1e0
[ 220.487371][ T7558] do_syscall_64+0xa4/0xf80
[ 220.487405][ T7558] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 220.487428][ T7558] RIP: 0033:0x7f129df9c10a
[ 220.487444][ T7558] 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
[ 220.487465][ T7558] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 220.487485][ T7558] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 220.487500][ T7558] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 220.487514][ T7558] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 220.487528][ T7558] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 220.487542][ T7558] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 220.487559][ T7558]
[ 220.487568][ T7558] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 220.598818][ T7563] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 220.604190][ T7558] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 220.628719][ T7563] CPU: 0 UID: 0 PID: 7563 Comm: syz.4.167 Not tainted syzkaller #0 PREEMPT(full)
[ 220.628748][ T7563] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 220.628762][ T7563] Call Trace:
[ 220.628768][ T7563]
[ 220.628775][ T7563] dump_stack_lvl+0x97/0xe0
[ 220.628802][ T7563] sysfs_warn_dup.cold+0x1c/0x28
[ 220.628839][ T7563] sysfs_create_dir_ns+0x129/0x140
[ 220.628867][ T7563] kobject_add_internal+0x104/0x310
[ 220.628895][ T7563] kobject_init_and_add+0xb2/0xf0
[ 220.628922][ T7563] ? alloc_workqueue_noprof+0xe0/0xb60
[ 220.628956][ T7563] gfs2_sys_fs_add+0xef/0x200
[ 220.628987][ T7563] gfs2_fill_super+0x896/0x1210
[ 220.629007][ T7563] ? sb_set_blocksize+0x8c/0x150
[ 220.629033][ T7563] ? setup_bdev_super+0x19d/0x330
[ 220.629055][ T7563] ? __pfx_gfs2_fill_super+0x10/0x10
[ 220.629091][ T7563] get_tree_bdev_flags+0x1c0/0x290
[ 220.629117][ T7563] gfs2_get_tree+0x26/0xd0
[ 220.629150][ T7563] vfs_get_tree+0x30/0x120
[ 220.629170][ T7563] path_mount+0x5a9/0x1350
[ 220.629203][ T7563] ? putname+0x78/0xe0
[ 220.629234][ T7563] __x64_sys_mount+0x1a3/0x1e0
[ 220.629267][ T7563] do_syscall_64+0xa4/0xf80
[ 220.629302][ T7563] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 220.629325][ T7563] RIP: 0033:0x7f72ded9c10a
[ 220.629341][ T7563] 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
[ 220.629363][ T7563] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 220.629383][ T7563] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 220.629397][ T7563] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 220.629412][ T7563] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 220.629426][ T7563] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 220.629439][ T7563] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 220.629465][ T7563]
[ 220.630557][ T7563] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 220.668918][ T7561] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 220.672274][ T7563] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 220.699387][ T7561] CPU: 1 UID: 0 PID: 7561 Comm: syz.0.168 Not tainted syzkaller #0 PREEMPT(full)
[ 220.699416][ T7561] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 220.699429][ T7561] Call Trace:
[ 220.699435][ T7561]
[ 220.699442][ T7561] dump_stack_lvl+0x97/0xe0
[ 220.699481][ T7561] sysfs_warn_dup.cold+0x1c/0x28
[ 220.699514][ T7561] sysfs_create_dir_ns+0x129/0x140
[ 220.699542][ T7561] kobject_add_internal+0x104/0x310
[ 220.699570][ T7561] kobject_init_and_add+0xb2/0xf0
[ 220.699596][ T7561] ? alloc_workqueue_noprof+0xe0/0xb60
[ 220.699625][ T7561] gfs2_sys_fs_add+0xef/0x200
[ 220.699662][ T7561] gfs2_fill_super+0x896/0x1210
[ 220.699681][ T7561] ? sb_set_blocksize+0x8c/0x150
[ 220.699704][ T7561] ? setup_bdev_super+0x19d/0x330
[ 220.699725][ T7561] ? __pfx_gfs2_fill_super+0x10/0x10
[ 220.699770][ T7561] get_tree_bdev_flags+0x1c0/0x290
[ 220.699798][ T7561] gfs2_get_tree+0x26/0xd0
[ 220.699830][ T7561] vfs_get_tree+0x30/0x120
[ 220.699850][ T7561] path_mount+0x5a9/0x1350
[ 220.699883][ T7561] ? putname+0x78/0xe0
[ 220.699914][ T7561] __x64_sys_mount+0x1a3/0x1e0
[ 220.699947][ T7561] do_syscall_64+0xa4/0xf80
[ 220.699981][ T7561] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 220.700003][ T7561] RIP: 0033:0x7f61a1b9c10a
[ 220.700018][ T7561] 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
[ 220.700040][ T7561] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 220.700060][ T7561] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 220.700074][ T7561] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 220.700088][ T7561] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 220.700102][ T7561] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 220.700115][ T7561] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 220.700136][ T7561]
[ 220.700146][ T7561] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 221.553001][ T7561] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 225.268750][ T6349] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 564
[ 225.283677][ T6349] CPU: 0 UID: 0 PID: 6349 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 225.283695][ T6349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 225.283703][ T6349] Call Trace:
[ 225.283707][ T6349]
[ 225.283712][ T6349] dump_stack_lvl+0x97/0xe0
[ 225.283730][ T6349] gfs2_assert_warn_i.cold+0x38/0x94
[ 225.283744][ T6349] gfs2_make_fs_ro+0x13d/0x220
[ 225.283758][ T6349] ? __pfx_autoremove_wake_function+0x10/0x10
[ 225.283782][ T6349] gfs2_put_super+0xb4/0x2d0
[ 225.283794][ T6349] ? __pfx_gfs2_put_super+0x10/0x10
[ 225.283807][ T6349] generic_shutdown_super+0x9c/0x160
[ 225.283821][ T6349] kill_block_super+0x1d/0x50
[ 225.283833][ T6349] gfs2_kill_sb+0x1b6/0x1e0
[ 225.283852][ T6349] deactivate_locked_super+0x4f/0x120
[ 225.283866][ T6349] deactivate_super+0xa4/0xc0
[ 225.283880][ T6349] cleanup_mnt+0x145/0x1f0
[ 225.283895][ T6349] task_work_run+0x95/0xf0
[ 225.283913][ T6349] exit_to_user_mode_loop+0xcf/0x440
[ 225.283929][ T6349] do_syscall_64+0x2b8/0xf80
[ 225.283951][ T6349] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 225.283964][ T6349] RIP: 0033:0x7f983719c0d7
[ 225.283975][ T6349] Code: a2 c7 05 bc 64 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
[ 225.283987][ T6349] RSP: 002b:00007fff4d649bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 225.283999][ T6349] RAX: 0000000000000000 RBX: 00007f983722d33b RCX: 00007f983719c0d7
[ 225.284007][ T6349] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff4d649cb0
[ 225.284014][ T6349] RBP: 00007fff4d649cb0 R08: 00007fff4d64acb0 R09: 00000000ffffffff
[ 225.284022][ T6349] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff4d64ad40
[ 225.284030][ T6349] R13: 00007f983722d33b R14: 0000000000035930 R15: 00007fff4d64ad80
[ 225.284039][ T6349]
[ 225.549786][ T7577] set_capacity_and_notify: 3 callbacks suppressed
[ 225.549796][ T7577] loop2: detected capacity change from 0 to 32768
[ 225.567453][ T7577] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 225.577391][ T7577] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 225.591088][ T7577] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 225.599745][ T23] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 225.606522][ T23] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 225.621776][ T23] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 15ms
[ 225.629353][ T23] gfs2: fsid=syz:syz.0: jid=0: Done
[ 225.634669][ T7577] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 225.643181][ T7577] gfs2: fsid=syz:syz.0: fatal: assertion "!atomic_read(&gl->gl_ail_count)" failed - function = inode_go_inval, file = fs/gfs2/glops.c, line = 362
[ 225.659210][ T7577] CPU: 1 UID: 0 PID: 7577 Comm: syz.2.166 Not tainted syzkaller #0 PREEMPT(full)
[ 225.659238][ T7577] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 225.659251][ T7577] Call Trace:
[ 225.659257][ T7577]
[ 225.659265][ T7577] dump_stack_lvl+0x97/0xe0
[ 225.659293][ T7577] gfs2_withdraw.cold+0xa/0x77
[ 225.659313][ T7577] gfs2_assert_withdraw_i.cold+0x2c/0x36
[ 225.659374][ T7577] inode_go_inval+0x1df/0x1f0
[ 225.659403][ T7577] gfs2_make_fs_rw+0x34/0xe0
[ 225.659417][ T7577] gfs2_fill_super+0xfbb/0x1210
[ 225.659428][ T7577] ? gfs2_fill_super+0xa23/0x1210
[ 225.659439][ T7577] ? setup_bdev_super+0x19d/0x330
[ 225.659452][ T7577] ? __pfx_gfs2_fill_super+0x10/0x10
[ 225.659472][ T7577] get_tree_bdev_flags+0x1c0/0x290
[ 225.659488][ T7577] gfs2_get_tree+0x26/0xd0
[ 225.659506][ T7577] vfs_get_tree+0x30/0x120
[ 225.659518][ T7577] path_mount+0x5a9/0x1350
[ 225.659537][ T7577] ? putname+0x78/0xe0
[ 225.659554][ T7577] __x64_sys_mount+0x1a3/0x1e0
[ 225.659575][ T7577] do_syscall_64+0xa4/0xf80
[ 225.659595][ T7577] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 225.659609][ T7577] RIP: 0033:0x7f983719c10a
[ 225.659619][ T7577] 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
[ 225.659631][ T7577] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 225.659643][ T7577] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 225.659651][ T7577] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 225.659659][ T7577] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 225.659667][ T7577] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 225.659674][ T7577] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 225.659683][ T7577]
[ 225.659689][ T7577] CPU: 1 UID: 0 PID: 7577 Comm: syz.2.166 Not tainted syzkaller #0 PREEMPT(full)
[ 225.659704][ T7577] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 225.659711][ T7577] Call Trace:
[ 225.659714][ T7577]
[ 225.659717][ T7577] dump_stack_lvl+0x97/0xe0
[ 225.659731][ T7577] gfs2_assert_withdraw_i.cold+0x31/0x36
[ 225.659743][ T7577] inode_go_inval+0x1df/0x1f0
[ 225.659761][ T7577] gfs2_make_fs_rw+0x34/0xe0
[ 225.659773][ T7577] gfs2_fill_super+0xfbb/0x1210
[ 225.659784][ T7577] ? gfs2_fill_super+0xa23/0x1210
[ 225.659794][ T7577] ? setup_bdev_super+0x19d/0x330
[ 225.659807][ T7577] ? __pfx_gfs2_fill_super+0x10/0x10
[ 225.659826][ T7577] get_tree_bdev_flags+0x1c0/0x290
[ 225.659842][ T7577] gfs2_get_tree+0x26/0xd0
[ 225.659860][ T7577] vfs_get_tree+0x30/0x120
[ 225.659871][ T7577] path_mount+0x5a9/0x1350
[ 225.659889][ T7577] ? putname+0x78/0xe0
[ 225.659906][ T7577] __x64_sys_mount+0x1a3/0x1e0
[ 225.659925][ T7577] do_syscall_64+0xa4/0xf80
[ 225.659944][ T7577] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 225.659956][ T7577] RIP: 0033:0x7f983719c10a
[ 225.659964][ T7577] 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
[ 225.659976][ T7577] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 225.659986][ T7577] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 225.659994][ T7577] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 225.660002][ T7577] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 225.660009][ T7577] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 225.660017][ T7577] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 225.660026][ T7577]
[ 225.660245][ T7577] gfs2: fsid=syz:syz.0: can't make FS RW: -5
2026/01/30 11:37:36 executed programs: 166
[ 233.932157][ T7586] loop6: detected capacity change from 0 to 32768
[ 233.942499][ T7593] loop3: detected capacity change from 0 to 32768
[ 233.960419][ T7595] loop4: detected capacity change from 0 to 32768
[ 233.966123][ T7596] loop1: detected capacity change from 0 to 32768
[ 233.978403][ T7594] loop0: detected capacity change from 0 to 32768
[ 233.979377][ T7587] loop2: detected capacity change from 0 to 32768
[ 233.994453][ T7593] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 233.998771][ T7586] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 234.003380][ T7593] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 234.021053][ T7596] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 234.028864][ T7586] CPU: 0 UID: 0 PID: 7586 Comm: syz.6.175 Not tainted syzkaller #0 PREEMPT(full)
[ 234.028890][ T7586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 234.028901][ T7586] Call Trace:
[ 234.028907][ T7586]
[ 234.028913][ T7586] dump_stack_lvl+0x97/0xe0
[ 234.028942][ T7586] sysfs_warn_dup.cold+0x1c/0x28
[ 234.028977][ T7586] sysfs_create_dir_ns+0x129/0x140
[ 234.029002][ T7586] kobject_add_internal+0x104/0x310
[ 234.029029][ T7586] kobject_init_and_add+0xb2/0xf0
[ 234.029058][ T7586] ? alloc_workqueue_noprof+0xe0/0xb60
[ 234.029087][ T7586] gfs2_sys_fs_add+0xef/0x200
[ 234.029119][ T7586] gfs2_fill_super+0x896/0x1210
[ 234.029139][ T7586] ? sb_set_blocksize+0x8c/0x150
[ 234.029164][ T7586] ? setup_bdev_super+0x19d/0x330
[ 234.029187][ T7586] ? __pfx_gfs2_fill_super+0x10/0x10
[ 234.029223][ T7586] get_tree_bdev_flags+0x1c0/0x290
[ 234.029249][ T7586] gfs2_get_tree+0x26/0xd0
[ 234.029283][ T7586] vfs_get_tree+0x30/0x120
[ 234.029303][ T7586] path_mount+0x5a9/0x1350
[ 234.029335][ T7586] ? putname+0x78/0xe0
[ 234.029366][ T7586] __x64_sys_mount+0x1a3/0x1e0
[ 234.029397][ T7586] do_syscall_64+0xa4/0xf80
[ 234.029433][ T7586] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 234.029455][ T7586] RIP: 0033:0x7f0c9379c10a
[ 234.029470][ T7586] 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
[ 234.029488][ T7586] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 234.029507][ T7586] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 234.029529][ T7586] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 234.029542][ T7586] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 234.029557][ T7586] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 234.029571][ T7586] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 234.029588][ T7586]
[ 234.029599][ T7586] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 234.038718][ T7596] CPU: 1 UID: 0 PID: 7596 Comm: syz.1.170 Not tainted syzkaller #0 PREEMPT(full)
[ 234.038746][ T7596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 234.038759][ T7596] Call Trace:
[ 234.038771][ T7596]
[ 234.038777][ T7596] dump_stack_lvl+0x97/0xe0
[ 234.038806][ T7596] sysfs_warn_dup.cold+0x1c/0x28
[ 234.038840][ T7596] sysfs_create_dir_ns+0x129/0x140
[ 234.038868][ T7596] kobject_add_internal+0x104/0x310
[ 234.038893][ T7596] kobject_init_and_add+0xb2/0xf0
[ 234.038917][ T7596] ? alloc_workqueue_noprof+0xe0/0xb60
[ 234.038948][ T7596] gfs2_sys_fs_add+0xef/0x200
[ 234.038979][ T7596] gfs2_fill_super+0x896/0x1210
[ 234.038999][ T7596] ? sb_set_blocksize+0x8c/0x150
[ 234.039025][ T7596] ? setup_bdev_super+0x19d/0x330
[ 234.039049][ T7596] ? __pfx_gfs2_fill_super+0x10/0x10
[ 234.039085][ T7596] get_tree_bdev_flags+0x1c0/0x290
[ 234.039112][ T7596] gfs2_get_tree+0x26/0xd0
[ 234.039145][ T7596] vfs_get_tree+0x30/0x120
[ 234.039166][ T7596] path_mount+0x5a9/0x1350
[ 234.039199][ T7596] ? putname+0x78/0xe0
[ 234.039230][ T7596] __x64_sys_mount+0x1a3/0x1e0
[ 234.039263][ T7596] do_syscall_64+0xa4/0xf80
[ 234.039298][ T7596] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 234.039321][ T7596] RIP: 0033:0x7f129df9c10a
[ 234.039337][ T7596] 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
[ 234.039359][ T7596] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 234.039378][ T7596] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 234.039393][ T7596] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 234.039407][ T7596] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 234.039421][ T7596] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 234.039434][ T7596] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 234.039452][ T7596]
[ 234.041454][ T7596] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 234.052698][ T7589] loop5: detected capacity change from 0 to 32768
[ 234.063664][ T7596] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 234.089895][ T7587] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 234.099632][ T7586] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 234.114318][ T7593] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 234.128718][ T7587] CPU: 1 UID: 0 PID: 7587 Comm: syz.2.171 Not tainted syzkaller #0 PREEMPT(full)
[ 234.128747][ T7587] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 234.128760][ T7587] Call Trace:
[ 234.128767][ T7587]
[ 234.128775][ T7587] dump_stack_lvl+0x97/0xe0
[ 234.128804][ T7587] sysfs_warn_dup.cold+0x1c/0x28
[ 234.128836][ T7587] sysfs_create_dir_ns+0x129/0x140
[ 234.128860][ T7587] kobject_add_internal+0x104/0x310
[ 234.128888][ T7587] kobject_init_and_add+0xb2/0xf0
[ 234.128915][ T7587] ? alloc_workqueue_noprof+0xe0/0xb60
[ 234.128943][ T7587] gfs2_sys_fs_add+0xef/0x200
[ 234.128974][ T7587] gfs2_fill_super+0x896/0x1210
[ 234.128995][ T7587] ? sb_set_blocksize+0x8c/0x150
[ 234.129021][ T7587] ? setup_bdev_super+0x19d/0x330
[ 234.129043][ T7587] ? __pfx_gfs2_fill_super+0x10/0x10
[ 234.129079][ T7587] get_tree_bdev_flags+0x1c0/0x290
[ 234.129107][ T7587] gfs2_get_tree+0x26/0xd0
[ 234.129139][ T7587] vfs_get_tree+0x30/0x120
[ 234.129159][ T7587] path_mount+0x5a9/0x1350
[ 234.129191][ T7587] ? putname+0x78/0xe0
[ 234.129223][ T7587] __x64_sys_mount+0x1a3/0x1e0
[ 234.129255][ T7587] do_syscall_64+0xa4/0xf80
[ 234.129290][ T7587] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 234.129312][ T7587] RIP: 0033:0x7f983719c10a
[ 234.129328][ T7587] 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
[ 234.129349][ T7587] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 234.129369][ T7587] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 234.129383][ T7587] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 234.129397][ T7587] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 234.129411][ T7587] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 234.129424][ T7587] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 234.129441][ T7587]
[ 234.129456][ T7587] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 234.270830][ T5912] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 234.272928][ T7587] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 234.277740][ T5912] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 234.298959][ T7595] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 234.319180][ T5912] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 41ms
[ 234.324302][ T7595] CPU: 1 UID: 0 PID: 7595 Comm: syz.4.173 Not tainted syzkaller #0 PREEMPT(full)
[ 234.324328][ T7595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 234.324341][ T7595] Call Trace:
[ 234.324347][ T7595]
[ 234.324354][ T7595] dump_stack_lvl+0x97/0xe0
[ 234.324381][ T7595] sysfs_warn_dup.cold+0x1c/0x28
[ 234.324414][ T7595] sysfs_create_dir_ns+0x129/0x140
[ 234.324442][ T7595] kobject_add_internal+0x104/0x310
[ 234.324469][ T7595] kobject_init_and_add+0xb2/0xf0
[ 234.324496][ T7595] ? alloc_workqueue_noprof+0xe0/0xb60
[ 234.324524][ T7595] gfs2_sys_fs_add+0xef/0x200
[ 234.324555][ T7595] gfs2_fill_super+0x896/0x1210
[ 234.324583][ T7595] ? sb_set_blocksize+0x8c/0x150
[ 234.324609][ T7595] ? setup_bdev_super+0x19d/0x330
[ 234.324631][ T7595] ? __pfx_gfs2_fill_super+0x10/0x10
[ 234.324666][ T7595] get_tree_bdev_flags+0x1c0/0x290
[ 234.324693][ T7595] gfs2_get_tree+0x26/0xd0
[ 234.324725][ T7595] vfs_get_tree+0x30/0x120
[ 234.324745][ T7595] path_mount+0x5a9/0x1350
[ 234.324777][ T7595] ? putname+0x78/0xe0
[ 234.324808][ T7595] __x64_sys_mount+0x1a3/0x1e0
[ 234.324840][ T7595] do_syscall_64+0xa4/0xf80
[ 234.324874][ T7595] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 234.324895][ T7595] RIP: 0033:0x7f72ded9c10a
[ 234.324911][ T7595] 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
[ 234.324932][ T7595] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 234.324951][ T7595] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 234.324965][ T7595] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 234.324979][ T7595] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 234.324993][ T7595] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 234.325006][ T7595] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 234.325023][ T7595]
[ 234.325034][ T7595] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 234.329950][ T5912] gfs2: fsid=syz:syz.0: jid=0: Done
[ 234.335281][ T7595] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 234.358752][ T7593] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 234.369181][ T7594] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 234.448807][ T7589] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 234.453336][ T7594] CPU: 1 UID: 0 PID: 7594 Comm: syz.0.169 Not tainted syzkaller #0 PREEMPT(full)
[ 234.453363][ T7594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 234.453377][ T7594] Call Trace:
[ 234.453383][ T7594]
[ 234.453391][ T7594] dump_stack_lvl+0x97/0xe0
[ 234.453419][ T7594] sysfs_warn_dup.cold+0x1c/0x28
[ 234.453452][ T7594] sysfs_create_dir_ns+0x129/0x140
[ 234.453578][ T7594] kobject_add_internal+0x104/0x310
[ 234.453605][ T7594] kobject_init_and_add+0xb2/0xf0
[ 234.453632][ T7594] ? alloc_workqueue_noprof+0xe0/0xb60
[ 234.453660][ T7594] gfs2_sys_fs_add+0xef/0x200
[ 234.453692][ T7594] gfs2_fill_super+0x896/0x1210
[ 234.453712][ T7594] ? sb_set_blocksize+0x8c/0x150
[ 234.453737][ T7594] ? setup_bdev_super+0x19d/0x330
[ 234.453759][ T7594] ? __pfx_gfs2_fill_super+0x10/0x10
[ 234.453793][ T7594] get_tree_bdev_flags+0x1c0/0x290
[ 234.453820][ T7594] gfs2_get_tree+0x26/0xd0
[ 234.453853][ T7594] vfs_get_tree+0x30/0x120
[ 234.453873][ T7594] path_mount+0x5a9/0x1350
[ 234.453905][ T7594] ? putname+0x78/0xe0
[ 234.453936][ T7594] __x64_sys_mount+0x1a3/0x1e0
[ 234.453969][ T7594] do_syscall_64+0xa4/0xf80
[ 234.454003][ T7594] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 234.454025][ T7594] RIP: 0033:0x7f61a1b9c10a
[ 234.454041][ T7594] 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
[ 234.454062][ T7594] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 234.454081][ T7594] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 234.454096][ T7594] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 234.454110][ T7594] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 234.454124][ T7594] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 234.454149][ T7594] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 234.454166][ T7594]
[ 234.454178][ T7594] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 234.656305][ T7589] CPU: 0 UID: 0 PID: 7589 Comm: syz.5.174 Not tainted syzkaller #0 PREEMPT(full)
[ 234.656334][ T7589] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 234.656346][ T7589] Call Trace:
[ 234.656353][ T7589]
[ 234.656360][ T7589] dump_stack_lvl+0x97/0xe0
[ 234.656388][ T7589] sysfs_warn_dup.cold+0x1c/0x28
[ 234.656422][ T7589] sysfs_create_dir_ns+0x129/0x140
[ 234.656450][ T7589] kobject_add_internal+0x104/0x310
[ 234.656478][ T7589] kobject_init_and_add+0xb2/0xf0
[ 234.656506][ T7589] ? alloc_workqueue_noprof+0xe0/0xb60
[ 234.656533][ T7589] gfs2_sys_fs_add+0xef/0x200
[ 234.656573][ T7589] gfs2_fill_super+0x896/0x1210
[ 234.656594][ T7589] ? sb_set_blocksize+0x8c/0x150
[ 234.656620][ T7589] ? setup_bdev_super+0x19d/0x330
[ 234.656643][ T7589] ? __pfx_gfs2_fill_super+0x10/0x10
[ 234.656679][ T7589] get_tree_bdev_flags+0x1c0/0x290
[ 234.656706][ T7589] gfs2_get_tree+0x26/0xd0
[ 234.656738][ T7589] vfs_get_tree+0x30/0x120
[ 234.656756][ T7589] path_mount+0x5a9/0x1350
[ 234.656786][ T7589] ? putname+0x78/0xe0
[ 234.656817][ T7589] __x64_sys_mount+0x1a3/0x1e0
[ 234.656851][ T7589] do_syscall_64+0xa4/0xf80
[ 234.656885][ T7589] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 234.656906][ T7589] RIP: 0033:0x7f37bff9c10a
[ 234.656920][ T7589] 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
[ 234.656941][ T7589] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 234.656961][ T7589] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 234.656975][ T7589] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 234.656989][ T7589] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 234.657003][ T7589] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 234.657016][ T7589] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 234.657033][ T7589]
[ 234.657043][ T7589] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 234.914781][ T6620] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9386 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 234.920821][ T7594] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 234.928596][ T23] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9381 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 234.958705][ T7589] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 234.980329][ T6620] CPU: 1 UID: 0 PID: 6620 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT(full)
[ 234.980358][ T6620] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 234.980374][ T6620] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 234.980410][ T6620] Call Trace:
[ 234.980416][ T6620]
[ 234.980423][ T6620] dump_stack_lvl+0x97/0xe0
[ 234.980449][ T6620] gfs2_meta_check_ii.cold+0xa/0x77
[ 234.980472][ T6620] gfs2_meta_buffer+0x1a2/0x1b0
[ 234.980507][ T6620] inode_go_instantiate+0x61/0x560
[ 234.980542][ T6620] gfs2_instantiate+0xa7/0x130
[ 234.980568][ T6620] gfs2_inode_lookup+0x49a/0x520
[ 234.980590][ T6620] ? set_next_entity+0xdb/0x270
[ 234.980620][ T6620] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 234.980644][ T6620] gfs2_lookup_by_inum+0x2f/0xb0
[ 234.980666][ T6620] delete_work_func+0xa3/0x2d0
[ 234.980697][ T6620] ? __schedule+0x47f/0x1740
[ 234.980728][ T6620] ? wg_packet_decrypt_worker+0x1b4/0x2b0
[ 234.980755][ T6620] process_one_work+0x26c/0x590
[ 234.980789][ T6620] worker_thread+0x2b1/0x4f0
[ 234.980823][ T6620] ? __pfx_worker_thread+0x10/0x10
[ 234.980856][ T6620] kthread+0x161/0x310
[ 234.980880][ T6620] ? __pfx_kthread+0x10/0x10
[ 234.980904][ T6620] ? __pfx_kthread+0x10/0x10
[ 234.980929][ T6620] ret_from_fork+0x23c/0x320
[ 234.980954][ T6620] ? __pfx_kthread+0x10/0x10
[ 234.980979][ T6620] ret_from_fork_asm+0x1a/0x30
[ 234.981012][ T6620]
[ 234.981019][ T6620] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 235.426229][ T7620] loop4: detected capacity change from 0 to 32768
[ 235.649935][ T7623] loop6: detected capacity change from 0 to 32768
[ 235.710147][ T7623] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 235.717728][ T7623] CPU: 0 UID: 0 PID: 7623 Comm: syz.6.177 Not tainted syzkaller #0 PREEMPT(full)
[ 235.717756][ T7623] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 235.717769][ T7623] Call Trace:
[ 235.717775][ T7623]
[ 235.717782][ T7623] dump_stack_lvl+0x97/0xe0
[ 235.717811][ T7623] sysfs_warn_dup.cold+0x1c/0x28
[ 235.717845][ T7623] sysfs_create_dir_ns+0x129/0x140
[ 235.717874][ T7623] kobject_add_internal+0x104/0x310
[ 235.717901][ T7623] kobject_init_and_add+0xb2/0xf0
[ 235.717929][ T7623] ? alloc_workqueue_noprof+0xe0/0xb60
[ 235.717958][ T7623] gfs2_sys_fs_add+0xef/0x200
[ 235.717990][ T7623] gfs2_fill_super+0x896/0x1210
[ 235.718010][ T7623] ? sb_set_blocksize+0x8c/0x150
[ 235.718035][ T7623] ? setup_bdev_super+0x19d/0x330
[ 235.718058][ T7623] ? __pfx_gfs2_fill_super+0x10/0x10
[ 235.718093][ T7623] get_tree_bdev_flags+0x1c0/0x290
[ 235.718121][ T7623] gfs2_get_tree+0x26/0xd0
[ 235.718156][ T7623] vfs_get_tree+0x30/0x120
[ 235.718177][ T7623] path_mount+0x5a9/0x1350
[ 235.718210][ T7623] ? putname+0x78/0xe0
[ 235.718242][ T7623] __x64_sys_mount+0x1a3/0x1e0
[ 235.718276][ T7623] do_syscall_64+0xa4/0xf80
[ 235.718310][ T7623] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 235.718332][ T7623] RIP: 0033:0x7f0c9379c10a
[ 235.718350][ T7623] 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
[ 235.718371][ T7623] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 235.718391][ T7623] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 235.718406][ T7623] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 235.718426][ T7623] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 235.718440][ T7623] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 235.718454][ T7623] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 235.718471][ T7623]
[ 235.718482][ T7623] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 235.724592][ T7630] loop5: detected capacity change from 0 to 32768
[ 235.764806][ T7620] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 235.795393][ T7623] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 235.965239][ T7627] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 235.974902][ T7629] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 235.991678][ T7624] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 235.998079][ T7620] CPU: 1 UID: 0 PID: 7620 Comm: syz.4.176 Not tainted syzkaller #0 PREEMPT(full)
[ 235.998108][ T7620] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 235.998121][ T7620] Call Trace:
[ 235.998127][ T7620]
[ 235.998134][ T7620] dump_stack_lvl+0x97/0xe0
[ 235.998163][ T7620] sysfs_warn_dup.cold+0x1c/0x28
[ 235.998197][ T7620] sysfs_create_dir_ns+0x129/0x140
[ 235.998226][ T7620] kobject_add_internal+0x104/0x310
[ 235.998253][ T7620] kobject_init_and_add+0xb2/0xf0
[ 235.998280][ T7620] ? alloc_workqueue_noprof+0xe0/0xb60
[ 235.998309][ T7620] gfs2_sys_fs_add+0xef/0x200
[ 235.998346][ T7620] gfs2_fill_super+0x896/0x1210
[ 235.998367][ T7620] ? sb_set_blocksize+0x8c/0x150
[ 235.998393][ T7620] ? setup_bdev_super+0x19d/0x330
[ 235.998416][ T7620] ? __pfx_gfs2_fill_super+0x10/0x10
[ 235.998450][ T7620] get_tree_bdev_flags+0x1c0/0x290
[ 235.998478][ T7620] gfs2_get_tree+0x26/0xd0
[ 235.998511][ T7620] vfs_get_tree+0x30/0x120
[ 235.998531][ T7620] path_mount+0x5a9/0x1350
[ 235.998565][ T7620] ? putname+0x78/0xe0
[ 235.998596][ T7620] __x64_sys_mount+0x1a3/0x1e0
[ 235.998629][ T7620] do_syscall_64+0xa4/0xf80
[ 235.998668][ T7620] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 235.998696][ T7620] RIP: 0033:0x7f72ded9c10a
[ 235.998712][ T7620] 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
[ 235.998733][ T7620] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 235.998754][ T7620] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 235.998768][ T7620] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 235.998783][ T7620] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 235.998797][ T7620] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 235.998811][ T7620] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 235.998828][ T7620]
[ 235.998907][ T7620] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 236.008053][ T7630] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 236.009713][ T7620] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 236.018755][ T7627] CPU: 0 UID: 0 PID: 7627 Comm: syz.0.181 Not tainted syzkaller #0 PREEMPT(full)
[ 236.018783][ T7627] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 236.018796][ T7627] Call Trace:
[ 236.018802][ T7627]
[ 236.018809][ T7627] dump_stack_lvl+0x97/0xe0
[ 236.018837][ T7627] sysfs_warn_dup.cold+0x1c/0x28
[ 236.018870][ T7627] sysfs_create_dir_ns+0x129/0x140
[ 236.018898][ T7627] kobject_add_internal+0x104/0x310
[ 236.018925][ T7627] kobject_init_and_add+0xb2/0xf0
[ 236.018953][ T7627] ? alloc_workqueue_noprof+0xe0/0xb60
[ 236.018981][ T7627] gfs2_sys_fs_add+0xef/0x200
[ 236.019012][ T7627] gfs2_fill_super+0x896/0x1210
[ 236.019032][ T7627] ? sb_set_blocksize+0x8c/0x150
[ 236.019058][ T7627] ? setup_bdev_super+0x19d/0x330
[ 236.019081][ T7627] ? __pfx_gfs2_fill_super+0x10/0x10
[ 236.019117][ T7627] get_tree_bdev_flags+0x1c0/0x290
[ 236.019144][ T7627] gfs2_get_tree+0x26/0xd0
[ 236.019177][ T7627] vfs_get_tree+0x30/0x120
[ 236.019197][ T7627] path_mount+0x5a9/0x1350
[ 236.019230][ T7627] ? putname+0x78/0xe0
[ 236.019265][ T7627] __x64_sys_mount+0x1a3/0x1e0
[ 236.019297][ T7627] do_syscall_64+0xa4/0xf80
[ 236.019331][ T7627] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 236.019354][ T7627] RIP: 0033:0x7f61a1b9c10a
[ 236.019370][ T7627] 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
[ 236.019390][ T7627] RSP: 002b:00007f61a29e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 236.019410][ T7627] RAX: ffffffffffffffda RBX: 00007f61a29e7ee0 RCX: 00007f61a1b9c10a
[ 236.019430][ T7627] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f61a29e7ea0
[ 236.019444][ T7627] RBP: 0000200000037f40 R08: 00007f61a29e7ee0 R09: 0000000000000000
[ 236.019458][ T7627] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 236.019471][ T7627] R13: 00007f61a29e7ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 236.019488][ T7627]
[ 236.019498][ T7627] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 236.039220][ T7630] CPU: 1 UID: 0 PID: 7630 Comm: syz.5.182 Not tainted syzkaller #0 PREEMPT(full)
[ 236.039248][ T7630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 236.039262][ T7630] Call Trace:
[ 236.039268][ T7630]
[ 236.039275][ T7630] dump_stack_lvl+0x97/0xe0
[ 236.039302][ T7630] sysfs_warn_dup.cold+0x1c/0x28
[ 236.039337][ T7630] sysfs_create_dir_ns+0x129/0x140
[ 236.039366][ T7630] kobject_add_internal+0x104/0x310
[ 236.039393][ T7630] kobject_init_and_add+0xb2/0xf0
[ 236.039421][ T7630] ? alloc_workqueue_noprof+0xe0/0xb60
[ 236.039449][ T7630] gfs2_sys_fs_add+0xef/0x200
[ 236.039490][ T7630] gfs2_fill_super+0x896/0x1210
[ 236.039511][ T7630] ? sb_set_blocksize+0x8c/0x150
[ 236.039537][ T7630] ? setup_bdev_super+0x19d/0x330
[ 236.039560][ T7630] ? __pfx_gfs2_fill_super+0x10/0x10
[ 236.039595][ T7630] get_tree_bdev_flags+0x1c0/0x290
[ 236.039624][ T7630] gfs2_get_tree+0x26/0xd0
[ 236.039657][ T7630] vfs_get_tree+0x30/0x120
[ 236.039684][ T7630] path_mount+0x5a9/0x1350
[ 236.039718][ T7630] ? putname+0x78/0xe0
[ 236.039750][ T7630] __x64_sys_mount+0x1a3/0x1e0
[ 236.039783][ T7630] do_syscall_64+0xa4/0xf80
[ 236.039818][ T7630] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 236.039840][ T7630] RIP: 0033:0x7f37bff9c10a
[ 236.039856][ T7630] 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
[ 236.039877][ T7630] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 236.039897][ T7630] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 236.039912][ T7630] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 236.039927][ T7630] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 236.039941][ T7630] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 236.039955][ T7630] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 236.039971][ T7630]
[ 236.039982][ T7630] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 236.077653][ T7624] CPU: 0 UID: 0 PID: 7624 Comm: syz.1.178 Not tainted syzkaller #0 PREEMPT(full)
[ 236.077681][ T7624] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 236.077693][ T7624] Call Trace:
[ 236.077699][ T7624]
[ 236.077706][ T7624] dump_stack_lvl+0x97/0xe0
[ 236.077734][ T7624] sysfs_warn_dup.cold+0x1c/0x28
[ 236.077767][ T7624] sysfs_create_dir_ns+0x129/0x140
[ 236.077796][ T7624] kobject_add_internal+0x104/0x310
[ 236.077822][ T7624] kobject_init_and_add+0xb2/0xf0
[ 236.077848][ T7624] ? alloc_workqueue_noprof+0xe0/0xb60
[ 236.077877][ T7624] gfs2_sys_fs_add+0xef/0x200
[ 236.077908][ T7624] gfs2_fill_super+0x896/0x1210
[ 236.077928][ T7624] ? sb_set_blocksize+0x8c/0x150
[ 236.077954][ T7624] ? setup_bdev_super+0x19d/0x330
[ 236.077977][ T7624] ? __pfx_gfs2_fill_super+0x10/0x10
[ 236.078011][ T7624] get_tree_bdev_flags+0x1c0/0x290
[ 236.078038][ T7624] gfs2_get_tree+0x26/0xd0
[ 236.078071][ T7624] vfs_get_tree+0x30/0x120
[ 236.078091][ T7624] path_mount+0x5a9/0x1350
[ 236.078124][ T7624] ? putname+0x78/0xe0
[ 236.078155][ T7624] __x64_sys_mount+0x1a3/0x1e0
[ 236.078187][ T7624] do_syscall_64+0xa4/0xf80
[ 236.078221][ T7624] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 236.078243][ T7624] RIP: 0033:0x7f129df9c10a
[ 236.078259][ T7624] 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
[ 236.078280][ T7624] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 236.078299][ T7624] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 236.078313][ T7624] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 236.078327][ T7624] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 236.078341][ T7624] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 236.078354][ T7624] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 236.078371][ T7624]
[ 236.078381][ T7624] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 236.079897][ T7630] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 236.091995][ T7629] CPU: 0 UID: 0 PID: 7629 Comm: syz.2.179 Not tainted syzkaller #0 PREEMPT(full)
[ 236.092022][ T7629] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 236.092035][ T7629] Call Trace:
[ 236.092040][ T7629]
[ 236.092047][ T7629] dump_stack_lvl+0x97/0xe0
[ 236.092075][ T7629] sysfs_warn_dup.cold+0x1c/0x28
[ 236.092108][ T7629] sysfs_create_dir_ns+0x129/0x140
[ 236.092137][ T7629] kobject_add_internal+0x104/0x310
[ 236.092164][ T7629] kobject_init_and_add+0xb2/0xf0
[ 236.092192][ T7629] ? alloc_workqueue_noprof+0xe0/0xb60
[ 236.092221][ T7629] gfs2_sys_fs_add+0xef/0x200
[ 236.092252][ T7629] gfs2_fill_super+0x896/0x1210
[ 236.092272][ T7629] ? sb_set_blocksize+0x8c/0x150
[ 236.092298][ T7629] ? setup_bdev_super+0x19d/0x330
[ 236.092320][ T7629] ? __pfx_gfs2_fill_super+0x10/0x10
[ 236.092359][ T7629] get_tree_bdev_flags+0x1c0/0x290
[ 236.092387][ T7629] gfs2_get_tree+0x26/0xd0
[ 236.092425][ T7629] vfs_get_tree+0x30/0x120
[ 236.092445][ T7629] path_mount+0x5a9/0x1350
[ 236.092477][ T7629] ? putname+0x78/0xe0
[ 236.092508][ T7629] __x64_sys_mount+0x1a3/0x1e0
[ 236.092541][ T7629] do_syscall_64+0xa4/0xf80
[ 236.092574][ T7629] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 236.092597][ T7629] RIP: 0033:0x7f983719c10a
[ 236.092613][ T7629] 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
[ 236.092634][ T7629] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 236.092653][ T7629] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 236.092667][ T7629] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 236.092681][ T7629] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 236.092696][ T7629] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 236.092709][ T7629] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 236.092726][ T7629]
[ 236.092736][ T7629] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 236.188690][ T7627] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 236.195314][ T7624] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 236.213284][ T7629] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 240.469757][ T796] gfs2: fsid=syz:syz.0: file system withdrawn
[ 240.559828][ T7646] set_capacity_and_notify: 3 callbacks suppressed
[ 240.559838][ T7646] loop3: detected capacity change from 0 to 32768
[ 240.576890][ T7646] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 240.585290][ T7646] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 240.596279][ T7646] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 240.604181][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 240.611756][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 240.628168][ T9] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 16ms
[ 240.635860][ T9] gfs2: fsid=syz:syz.0: jid=0: Done
[ 240.641302][ T7646] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 240.710455][ T9] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9381 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 240.729036][ T10] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9387 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 240.744644][ T797] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9390 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 240.759985][ T5912] gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 9386 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 496
[ 240.775548][ T9] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full)
[ 240.775576][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 240.775591][ T9] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 240.775627][ T9] Call Trace:
[ 240.775633][ T9]
[ 240.775641][ T9] dump_stack_lvl+0x97/0xe0
[ 240.775666][ T9] gfs2_meta_check_ii.cold+0xa/0x77
[ 240.775689][ T9] gfs2_meta_buffer+0x1a2/0x1b0
[ 240.775718][ T9] inode_go_instantiate+0x61/0x560
[ 240.775754][ T9] gfs2_instantiate+0xa7/0x130
[ 240.775780][ T9] gfs2_inode_lookup+0x49a/0x520
[ 240.775803][ T9] ? set_next_entity+0xdb/0x270
[ 240.775832][ T9] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 240.775855][ T9] gfs2_lookup_by_inum+0x2f/0xb0
[ 240.775878][ T9] delete_work_func+0xa3/0x2d0
[ 240.775909][ T9] ? __schedule+0x47f/0x1740
[ 240.775950][ T9] process_one_work+0x26c/0x590
[ 240.775986][ T9] worker_thread+0x2b1/0x4f0
[ 240.776020][ T9] ? __pfx_worker_thread+0x10/0x10
[ 240.776053][ T9] kthread+0x161/0x310
[ 240.776073][ T9] ? __pfx_kthread+0x10/0x10
[ 240.776094][ T9] ? __pfx_kthread+0x10/0x10
[ 240.776117][ T9] ret_from_fork+0x23c/0x320
[ 240.776142][ T9] ? __pfx_kthread+0x10/0x10
[ 240.776166][ T9] ret_from_fork_asm+0x1a/0x30
[ 240.776198][ T9]
[ 240.776205][ T9] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 245.989776][ T6864] gfs2: fsid=syz:syz.0: file system withdrawn
2026/01/30 11:37:50 executed programs: 180
[ 248.510990][ T7656] loop0: detected capacity change from 0 to 32768
[ 248.519616][ T7664] loop1: detected capacity change from 0 to 32768
[ 248.526161][ T7662] loop4: detected capacity change from 0 to 32768
[ 248.538378][ T7658] loop6: detected capacity change from 0 to 32768
[ 248.551922][ T7663] loop2: detected capacity change from 0 to 32768
[ 248.569221][ T7656] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 248.579801][ T7656] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 248.588880][ T7662] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 248.604188][ T7666] loop5: detected capacity change from 0 to 32768
[ 248.604413][ T7664] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 248.614577][ T7661] loop3: detected capacity change from 0 to 32768
[ 248.622758][ T7664] CPU: 1 UID: 0 PID: 7664 Comm: syz.1.184 Not tainted syzkaller #0 PREEMPT(full)
[ 248.622787][ T7664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 248.622800][ T7664] Call Trace:
[ 248.622806][ T7664]
[ 248.622813][ T7664] dump_stack_lvl+0x97/0xe0
[ 248.622842][ T7664] sysfs_warn_dup.cold+0x1c/0x28
[ 248.622875][ T7664] sysfs_create_dir_ns+0x129/0x140
[ 248.622902][ T7664] kobject_add_internal+0x104/0x310
[ 248.622929][ T7664] kobject_init_and_add+0xb2/0xf0
[ 248.622956][ T7664] ? alloc_workqueue_noprof+0xe0/0xb60
[ 248.622984][ T7664] gfs2_sys_fs_add+0xef/0x200
[ 248.623015][ T7664] gfs2_fill_super+0x896/0x1210
[ 248.623035][ T7664] ? sb_set_blocksize+0x8c/0x150
[ 248.623062][ T7664] ? setup_bdev_super+0x19d/0x330
[ 248.623084][ T7664] ? __pfx_gfs2_fill_super+0x10/0x10
[ 248.623119][ T7664] get_tree_bdev_flags+0x1c0/0x290
[ 248.623147][ T7664] gfs2_get_tree+0x26/0xd0
[ 248.623179][ T7664] vfs_get_tree+0x30/0x120
[ 248.623199][ T7664] path_mount+0x5a9/0x1350
[ 248.623232][ T7664] ? putname+0x78/0xe0
[ 248.623263][ T7664] __x64_sys_mount+0x1a3/0x1e0
[ 248.623296][ T7664] do_syscall_64+0xa4/0xf80
[ 248.623336][ T7664] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 248.623358][ T7664] RIP: 0033:0x7f129df9c10a
[ 248.623374][ T7664] 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
[ 248.623395][ T7664] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 248.623415][ T7664] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 248.623429][ T7664] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 248.623443][ T7664] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 248.623457][ T7664] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 248.623470][ T7664] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 248.623487][ T7664]
[ 248.623498][ T7664] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 248.625000][ T7662] CPU: 0 UID: 0 PID: 7662 Comm: syz.4.187 Not tainted syzkaller #0 PREEMPT(full)
[ 248.625026][ T7662] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 248.625039][ T7662] Call Trace:
[ 248.625045][ T7662]
[ 248.625052][ T7662] dump_stack_lvl+0x97/0xe0
[ 248.625076][ T7662] sysfs_warn_dup.cold+0x1c/0x28
[ 248.625109][ T7662] sysfs_create_dir_ns+0x129/0x140
[ 248.625136][ T7662] kobject_add_internal+0x104/0x310
[ 248.625162][ T7662] kobject_init_and_add+0xb2/0xf0
[ 248.625188][ T7662] ? alloc_workqueue_noprof+0xe0/0xb60
[ 248.625216][ T7662] gfs2_sys_fs_add+0xef/0x200
[ 248.625247][ T7662] gfs2_fill_super+0x896/0x1210
[ 248.625267][ T7662] ? sb_set_blocksize+0x8c/0x150
[ 248.625292][ T7662] ? setup_bdev_super+0x19d/0x330
[ 248.625314][ T7662] ? __pfx_gfs2_fill_super+0x10/0x10
[ 248.625349][ T7662] get_tree_bdev_flags+0x1c0/0x290
[ 248.625376][ T7662] gfs2_get_tree+0x26/0xd0
[ 248.625409][ T7662] vfs_get_tree+0x30/0x120
[ 248.625430][ T7662] path_mount+0x5a9/0x1350
[ 248.625462][ T7662] ? putname+0x78/0xe0
[ 248.625493][ T7662] __x64_sys_mount+0x1a3/0x1e0
[ 248.625527][ T7662] do_syscall_64+0xa4/0xf80
[ 248.625567][ T7662] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 248.625590][ T7662] RIP: 0033:0x7f72ded9c10a
[ 248.625605][ T7662] 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
[ 248.625626][ T7662] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 248.625645][ T7662] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 248.625659][ T7662] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 248.625674][ T7662] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 248.625688][ T7662] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 248.625701][ T7662] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 248.625718][ T7662]
[ 248.625728][ T7662] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 248.635256][ T7664] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 248.669436][ T7656] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 248.693843][ T7662] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 248.710504][ T6864] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 248.714747][ T7658] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 248.719351][ T6864] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 248.738535][ T7658] CPU: 1 UID: 0 PID: 7658 Comm: syz.6.189 Not tainted syzkaller #0 PREEMPT(full)
[ 248.738563][ T7658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 248.738576][ T7658] Call Trace:
[ 248.738582][ T7658]
[ 248.738588][ T7658] dump_stack_lvl+0x97/0xe0
[ 248.738616][ T7658] sysfs_warn_dup.cold+0x1c/0x28
[ 248.738654][ T7658] sysfs_create_dir_ns+0x129/0x140
[ 248.738681][ T7658] kobject_add_internal+0x104/0x310
[ 248.738708][ T7658] kobject_init_and_add+0xb2/0xf0
[ 248.738735][ T7658] ? alloc_workqueue_noprof+0xe0/0xb60
[ 248.738763][ T7658] gfs2_sys_fs_add+0xef/0x200
[ 248.738794][ T7658] gfs2_fill_super+0x896/0x1210
[ 248.738814][ T7658] ? sb_set_blocksize+0x8c/0x150
[ 248.738839][ T7658] ? setup_bdev_super+0x19d/0x330
[ 248.738861][ T7658] ? __pfx_gfs2_fill_super+0x10/0x10
[ 248.738896][ T7658] get_tree_bdev_flags+0x1c0/0x290
[ 248.738924][ T7658] gfs2_get_tree+0x26/0xd0
[ 248.738956][ T7658] vfs_get_tree+0x30/0x120
[ 248.738975][ T7658] path_mount+0x5a9/0x1350
[ 248.739008][ T7658] ? putname+0x78/0xe0
[ 248.739038][ T7658] __x64_sys_mount+0x1a3/0x1e0
[ 248.739071][ T7658] do_syscall_64+0xa4/0xf80
[ 248.739104][ T7658] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 248.739126][ T7658] RIP: 0033:0x7f0c9379c10a
[ 248.739142][ T7658] 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
[ 248.739163][ T7658] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 248.739182][ T7658] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 248.739197][ T7658] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 248.739211][ T7658] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 248.739225][ T7658] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 248.739238][ T7658] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 248.739255][ T7658]
[ 248.739293][ T7658] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 248.757455][ T6864] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 38ms
[ 248.831397][ T7658] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 248.849424][ T6864] gfs2: fsid=syz:syz.0: jid=0: Done
[ 248.858861][ T7663] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 248.862516][ T7656] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 248.865522][ T7663] CPU: 1 UID: 0 PID: 7663 Comm: syz.2.185 Not tainted syzkaller #0 PREEMPT(full)
[ 248.865549][ T7663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 248.865561][ T7663] Call Trace:
[ 248.865567][ T7663]
[ 248.865575][ T7663] dump_stack_lvl+0x97/0xe0
[ 248.865604][ T7663] sysfs_warn_dup.cold+0x1c/0x28
[ 248.865639][ T7663] sysfs_create_dir_ns+0x129/0x140
[ 248.865667][ T7663] kobject_add_internal+0x104/0x310
[ 248.865694][ T7663] kobject_init_and_add+0xb2/0xf0
[ 248.865722][ T7663] ? alloc_workqueue_noprof+0xe0/0xb60
[ 248.865751][ T7663] gfs2_sys_fs_add+0xef/0x200
[ 248.865783][ T7663] gfs2_fill_super+0x896/0x1210
[ 248.865804][ T7663] ? sb_set_blocksize+0x8c/0x150
[ 248.865832][ T7663] ? setup_bdev_super+0x19d/0x330
[ 248.865857][ T7663] ? __pfx_gfs2_fill_super+0x10/0x10
[ 248.865893][ T7663] get_tree_bdev_flags+0x1c0/0x290
[ 248.865921][ T7663] gfs2_get_tree+0x26/0xd0
[ 248.865953][ T7663] vfs_get_tree+0x30/0x120
[ 248.865975][ T7663] path_mount+0x5a9/0x1350
[ 248.866007][ T7663] ? putname+0x78/0xe0
[ 248.866040][ T7663] __x64_sys_mount+0x1a3/0x1e0
[ 248.866074][ T7663] do_syscall_64+0xa4/0xf80
[ 248.866109][ T7663] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 248.866132][ T7663] RIP: 0033:0x7f983719c10a
[ 248.866149][ T7663] 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
[ 248.866170][ T7663] RSP: 002b:00007f9837febe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 248.866190][ T7663] RAX: ffffffffffffffda RBX: 00007f9837febee0 RCX: 00007f983719c10a
[ 248.866220][ T7663] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f9837febea0
[ 248.866236][ T7663] RBP: 0000200000037f40 R08: 00007f9837febee0 R09: 0000000000000000
[ 248.866250][ T7663] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 248.866265][ T7663] R13: 00007f9837febea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 248.866283][ T7663]
[ 248.866294][ T7663] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 248.978766][ T7661] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 248.986001][ T7663] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 248.995513][ T7666] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 249.014686][ T7661] CPU: 1 UID: 0 PID: 7661 Comm: syz.3.186 Not tainted syzkaller #0 PREEMPT(full)
[ 249.014716][ T7661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 249.014729][ T7661] Call Trace:
[ 249.014741][ T7661]
[ 249.014748][ T7661] dump_stack_lvl+0x97/0xe0
[ 249.014777][ T7661] sysfs_warn_dup.cold+0x1c/0x28
[ 249.014812][ T7661] sysfs_create_dir_ns+0x129/0x140
[ 249.014840][ T7661] kobject_add_internal+0x104/0x310
[ 249.014868][ T7661] kobject_init_and_add+0xb2/0xf0
[ 249.014897][ T7661] ? alloc_workqueue_noprof+0xe0/0xb60
[ 249.014925][ T7661] gfs2_sys_fs_add+0xef/0x200
[ 249.014958][ T7661] gfs2_fill_super+0x896/0x1210
[ 249.014978][ T7661] ? sb_set_blocksize+0x8c/0x150
[ 249.015004][ T7661] ? setup_bdev_super+0x19d/0x330
[ 249.015027][ T7661] ? __pfx_gfs2_fill_super+0x10/0x10
[ 249.015063][ T7661] get_tree_bdev_flags+0x1c0/0x290
[ 249.015091][ T7661] gfs2_get_tree+0x26/0xd0
[ 249.015123][ T7661] vfs_get_tree+0x30/0x120
[ 249.015144][ T7661] path_mount+0x5a9/0x1350
[ 249.015177][ T7661] ? putname+0x78/0xe0
[ 249.015208][ T7661] __x64_sys_mount+0x1a3/0x1e0
[ 249.015241][ T7661] do_syscall_64+0xa4/0xf80
[ 249.015276][ T7661] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 249.015341][ T7661] RIP: 0033:0x7fc45b79c10a
[ 249.015356][ T7661] 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
[ 249.015375][ T7661] RSP: 002b:00007fc45adfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 249.015393][ T7661] RAX: ffffffffffffffda RBX: 00007fc45adfdee0 RCX: 00007fc45b79c10a
[ 249.015407][ T7661] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc45adfdea0
[ 249.015421][ T7661] RBP: 0000200000037f40 R08: 00007fc45adfdee0 R09: 0000000000000000
[ 249.015435][ T7661] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 249.015449][ T7661] R13: 00007fc45adfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 249.015464][ T7661]
[ 249.015544][ T7661] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 249.092573][ T7666] CPU: 0 UID: 0 PID: 7666 Comm: syz.5.188 Not tainted syzkaller #0 PREEMPT(full)
[ 249.092602][ T7666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 249.092616][ T7666] Call Trace:
[ 249.092622][ T7666]
[ 249.092628][ T7666] dump_stack_lvl+0x97/0xe0
[ 249.092656][ T7666] sysfs_warn_dup.cold+0x1c/0x28
[ 249.092689][ T7666] sysfs_create_dir_ns+0x129/0x140
[ 249.092717][ T7666] kobject_add_internal+0x104/0x310
[ 249.092744][ T7666] kobject_init_and_add+0xb2/0xf0
[ 249.092770][ T7666] ? alloc_workqueue_noprof+0xe0/0xb60
[ 249.092810][ T7666] gfs2_sys_fs_add+0xef/0x200
[ 249.092841][ T7666] gfs2_fill_super+0x896/0x1210
[ 249.092861][ T7666] ? sb_set_blocksize+0x8c/0x150
[ 249.092887][ T7666] ? setup_bdev_super+0x19d/0x330
[ 249.092909][ T7666] ? __pfx_gfs2_fill_super+0x10/0x10
[ 249.092955][ T7666] get_tree_bdev_flags+0x1c0/0x290
[ 249.092982][ T7666] gfs2_get_tree+0x26/0xd0
[ 249.093015][ T7666] vfs_get_tree+0x30/0x120
[ 249.093036][ T7666] path_mount+0x5a9/0x1350
[ 249.093068][ T7666] ? putname+0x78/0xe0
[ 249.093100][ T7666] __x64_sys_mount+0x1a3/0x1e0
[ 249.093133][ T7666] do_syscall_64+0xa4/0xf80
[ 249.093167][ T7666] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 249.093189][ T7666] RIP: 0033:0x7f37bff9c10a
[ 249.093211][ T7666] 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
[ 249.093232][ T7666] RSP: 002b:00007f37c0f0ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 249.093252][ T7666] RAX: ffffffffffffffda RBX: 00007f37c0f0aee0 RCX: 00007f37bff9c10a
[ 249.093267][ T7666] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f37c0f0aea0
[ 249.093280][ T7666] RBP: 0000200000037f40 R08: 00007f37c0f0aee0 R09: 0000000000000000
[ 249.093294][ T7666] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 249.093308][ T7666] R13: 00007f37c0f0aea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 249.093325][ T7666]
[ 249.093334][ T7666] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 249.108530][ T7661] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 249.117917][ T7666] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 249.818288][ T7688] loop1: detected capacity change from 0 to 32768
[ 249.981004][ T7694] loop2: detected capacity change from 0 to 32768
[ 250.069399][ T7690] loop4: detected capacity change from 0 to 32768
[ 250.099662][ T7688] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 250.115870][ T7688] CPU: 0 UID: 0 PID: 7688 Comm: syz.1.191 Not tainted syzkaller #0 PREEMPT(full)
[ 250.115896][ T7688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 250.115908][ T7688] Call Trace:
[ 250.115913][ T7688]
[ 250.115919][ T7688] dump_stack_lvl+0x97/0xe0
[ 250.115946][ T7688] sysfs_warn_dup.cold+0x1c/0x28
[ 250.115981][ T7688] sysfs_create_dir_ns+0x129/0x140
[ 250.116008][ T7688] kobject_add_internal+0x104/0x310
[ 250.116035][ T7688] kobject_init_and_add+0xb2/0xf0
[ 250.116064][ T7688] ? alloc_workqueue_noprof+0xe0/0xb60
[ 250.116090][ T7688] gfs2_sys_fs_add+0xef/0x200
[ 250.116123][ T7688] gfs2_fill_super+0x896/0x1210
[ 250.116141][ T7688] ? sb_set_blocksize+0x8c/0x150
[ 250.116166][ T7688] ? setup_bdev_super+0x19d/0x330
[ 250.116189][ T7688] ? __pfx_gfs2_fill_super+0x10/0x10
[ 250.116224][ T7688] get_tree_bdev_flags+0x1c0/0x290
[ 250.116251][ T7688] gfs2_get_tree+0x26/0xd0
[ 250.116290][ T7688] vfs_get_tree+0x30/0x120
[ 250.116310][ T7688] path_mount+0x5a9/0x1350
[ 250.116346][ T7688] ? putname+0x78/0xe0
[ 250.116385][ T7688] __x64_sys_mount+0x1a3/0x1e0
[ 250.116419][ T7688] do_syscall_64+0xa4/0xf80
[ 250.116455][ T7688] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 250.116479][ T7688] RIP: 0033:0x7f129df9c10a
[ 250.116495][ T7688] 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
[ 250.116515][ T7688] RSP: 002b:00007f129ee0be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 250.116536][ T7688] RAX: ffffffffffffffda RBX: 00007f129ee0bee0 RCX: 00007f129df9c10a
[ 250.116551][ T7688] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f129ee0bea0
[ 250.116566][ T7688] RBP: 0000200000037f40 R08: 00007f129ee0bee0 R09: 0000000000000000
[ 250.116580][ T7688] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 250.116602][ T7688] R13: 00007f129ee0bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 250.116624][ T7688]
[ 250.116635][ T7688] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 250.136643][ T7692] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 250.136662][ T7692] CPU: 1 UID: 0 PID: 7692 Comm: syz.6.192 Not tainted syzkaller #0 PREEMPT(full)
[ 250.136693][ T7692] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 250.136706][ T7692] Call Trace:
[ 250.136711][ T7692]
[ 250.136718][ T7692] dump_stack_lvl+0x97/0xe0
[ 250.136745][ T7692] sysfs_warn_dup.cold+0x1c/0x28
[ 250.136780][ T7692] sysfs_create_dir_ns+0x129/0x140
[ 250.136806][ T7692] kobject_add_internal+0x104/0x310
[ 250.136833][ T7692] kobject_init_and_add+0xb2/0xf0
[ 250.136860][ T7692] ? alloc_workqueue_noprof+0xe0/0xb60
[ 250.136890][ T7692] gfs2_sys_fs_add+0xef/0x200
[ 250.136922][ T7692] gfs2_fill_super+0x896/0x1210
[ 250.136941][ T7692] ? sb_set_blocksize+0x8c/0x150
[ 250.136966][ T7692] ? setup_bdev_super+0x19d/0x330
[ 250.136989][ T7692] ? __pfx_gfs2_fill_super+0x10/0x10
[ 250.137023][ T7692] get_tree_bdev_flags+0x1c0/0x290
[ 250.137059][ T7692] gfs2_get_tree+0x26/0xd0
[ 250.137092][ T7692] vfs_get_tree+0x30/0x120
[ 250.137112][ T7692] path_mount+0x5a9/0x1350
[ 250.137151][ T7692] ? putname+0x78/0xe0
[ 250.137185][ T7692] __x64_sys_mount+0x1a3/0x1e0
[ 250.137228][ T7692] do_syscall_64+0xa4/0xf80
[ 250.137266][ T7692] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 250.137288][ T7692] RIP: 0033:0x7f0c9379c10a
[ 250.137305][ T7692] 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
[ 250.137326][ T7692] RSP: 002b:00007f0c92dfde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 250.137345][ T7692] RAX: ffffffffffffffda RBX: 00007f0c92dfdee0 RCX: 00007f0c9379c10a
[ 250.137360][ T7692] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f0c92dfdea0
[ 250.137374][ T7692] RBP: 0000200000037f40 R08: 00007f0c92dfdee0 R09: 0000000000000000
[ 250.137387][ T7692] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 250.137400][ T7692] R13: 00007f0c92dfdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 250.137417][ T7692]
[ 250.137440][ T7692] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 250.141142][ T7688] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 250.149382][ T7692] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 250.165304][ T11] BUG: kernel NULL pointer dereference, address: 0000000000000064
[ 250.209026][ T7690] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 250.213061][ T11] #PF: supervisor read access in kernel mode
[ 250.217466][ T7690] CPU: 1 UID: 0 PID: 7690 Comm: syz.4.193 Not tainted syzkaller #0 PREEMPT(full)
[ 250.217493][ T7690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 250.217507][ T7690] Call Trace:
[ 250.217515][ T7690]
[ 250.217523][ T7690] dump_stack_lvl+0x97/0xe0
[ 250.217552][ T7690] sysfs_warn_dup.cold+0x1c/0x28
[ 250.217585][ T7690] sysfs_create_dir_ns+0x129/0x140
[ 250.217611][ T7690] kobject_add_internal+0x104/0x310
[ 250.217638][ T7690] kobject_init_and_add+0xb2/0xf0
[ 250.217665][ T7690] ? alloc_workqueue_noprof+0xe0/0xb60
[ 250.217692][ T7690] gfs2_sys_fs_add+0xef/0x200
[ 250.217724][ T7690] gfs2_fill_super+0x896/0x1210
[ 250.217745][ T7690] ? sb_set_blocksize+0x8c/0x150
[ 250.217770][ T7690] ? setup_bdev_super+0x19d/0x330
[ 250.217793][ T7690] ? __pfx_gfs2_fill_super+0x10/0x10
[ 250.217828][ T7690] get_tree_bdev_flags+0x1c0/0x290
[ 250.217855][ T7690] gfs2_get_tree+0x26/0xd0
[ 250.217887][ T7690] vfs_get_tree+0x30/0x120
[ 250.217908][ T7690] path_mount+0x5a9/0x1350
[ 250.217940][ T7690] ? putname+0x78/0xe0
[ 250.217970][ T7690] __x64_sys_mount+0x1a3/0x1e0
[ 250.218004][ T7690] do_syscall_64+0xa4/0xf80
[ 250.218038][ T7690] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 250.218061][ T7690] RIP: 0033:0x7f72ded9c10a
[ 250.218077][ T7690] 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
[ 250.218098][ T7690] RSP: 002b:00007f72dfc05e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 250.218117][ T7690] RAX: ffffffffffffffda RBX: 00007f72dfc05ee0 RCX: 00007f72ded9c10a
[ 250.218132][ T7690] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f72dfc05ea0
[ 250.218146][ T7690] RBP: 0000200000037f40 R08: 00007f72dfc05ee0 R09: 0000000000000000
[ 250.218167][ T7690] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 250.218181][ T7690] R13: 00007f72dfc05ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 250.218198][ T7690]
[ 250.218215][ T7690] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 250.221511][ T11] #PF: error_code(0x0000) - not-present page
[ 250.221523][ T11] PGD 800000012862b067 P4D 800000012862b067 PUD 0
[ 250.221544][ T11] Oops: Oops: 0000 [#1] SMP PTI
[ 250.221563][ T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/0:0H Not tainted syzkaller #0 PREEMPT(full)
[ 250.814595][ T11] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
[ 250.825079][ T11] Workqueue: gfs2-glock/syz:syz glock_work_func
[ 250.831328][ T11] RIP: 0010:__gfs2_trans_begin+0x117/0x3e0
[ 250.837138][ T11] Code: 43 40 48 8d 43 70 48 89 43 70 48 89 43 78 48 8d 83 80 00 00 00 48 89 83 80 00 00 00 48 89 83 88 00 00 00 48 8b 85 00 06 00 00 <44> 8b 60 64 44 89 e7 e8 0d eb 08 ff 45 39 f4 0f 82 06 02 00 00 e8
[ 250.856824][ T11] RSP: 0018:ffffc900000abc40 EFLAGS: 00010293
[ 250.862880][ T11] RAX: 0000000000000000 RBX: ffffc900000abc88 RCX: ffffffff827b797a
[ 250.870942][ T11] RDX: ffff88810095b480 RSI: 0000000000000004 RDI: ffff88810095b480
[ 250.878990][ T11] RBP: ffff88810edf7000 R08: 0000000000000005 R09: 0000000000000000
[ 250.887294][ T11] R10: 0000000000000000 R11: fefefefefefefeff R12: 0000000000000000
[ 250.895435][ T11] R13: 0000000000000000 R14: 0000000000000004 R15: ffffffff82789781
[ 250.903512][ T11] FS: 0000000000000000(0000) GS:ffff8881b2520000(0000) knlGS:0000000000000000
[ 250.912689][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 250.919271][ T11] CR2: 0000000000000064 CR3: 000000010dd04000 CR4: 00000000003526f0
[ 250.927364][ T11] Call Trace:
[ 250.930629][ T11]
[ 250.933561][ T11] gfs2_ail_empty_gl+0x10a/0x170
[ 250.938683][ T11] ? inode_go_sync+0x131/0x320
[ 250.943714][ T11] inode_go_sync+0x131/0x320
[ 250.948325][ T11] do_xmote+0xca/0x2d0
[ 250.952393][ T11] run_queue+0x28b/0x310
[ 250.956772][ T11] glock_work_func+0xac/0x280
[ 250.961535][ T11] ? pwq_dec_nr_in_flight+0x85/0x570
[ 250.966844][ T11] process_one_work+0x26c/0x590
[ 250.971703][ T11] worker_thread+0x2b1/0x4f0
[ 250.976297][ T11] ? __pfx_worker_thread+0x10/0x10
[ 250.981494][ T11] kthread+0x161/0x310
[ 250.985642][ T11] ? __pfx_kthread+0x10/0x10
[ 250.990221][ T11] ? __pfx_kthread+0x10/0x10
[ 250.994806][ T11] ret_from_fork+0x23c/0x320
[ 250.999428][ T11] ? __pfx_kthread+0x10/0x10
[ 251.004174][ T11] ret_from_fork_asm+0x1a/0x30
[ 251.009308][ T11]
[ 251.012534][ T11] Modules linked in:
[ 251.016427][ T11] CR2: 0000000000000064
[ 251.020678][ T11] ---[ end trace 0000000000000000 ]---
[ 251.026309][ T11] RIP: 0010:__gfs2_trans_begin+0x117/0x3e0
[ 251.032330][ T11] Code: 43 40 48 8d 43 70 48 89 43 70 48 89 43 78 48 8d 83 80 00 00 00 48 89 83 80 00 00 00 48 89 83 88 00 00 00 48 8b 85 00 06 00 00 <44> 8b 60 64 44 89 e7 e8 0d eb 08 ff 45 39 f4 0f 82 06 02 00 00 e8
[ 251.052272][ T11] RSP: 0018:ffffc900000abc40 EFLAGS: 00010293
[ 251.058335][ T11] RAX: 0000000000000000 RBX: ffffc900000abc88 RCX: ffffffff827b797a
[ 251.066306][ T11] RDX: ffff88810095b480 RSI: 0000000000000004 RDI: ffff88810095b480
[ 251.074451][ T11] RBP: ffff88810edf7000 R08: 0000000000000005 R09: 0000000000000000
[ 251.082408][ T11] R10: 0000000000000000 R11: fefefefefefefeff R12: 0000000000000000
[ 251.090723][ T11] R13: 0000000000000000 R14: 0000000000000004 R15: ffffffff82789781
[ 251.098681][ T11] FS: 0000000000000000(0000) GS:ffff8881b2520000(0000) knlGS:0000000000000000
[ 251.107606][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 251.114352][ T11] CR2: 0000000000000064 CR3: 000000010dd04000 CR4: 00000000003526f0
[ 251.122576][ T11] Kernel panic - not syncing: Fatal exception
[ 251.129104][ T11] Kernel Offset: disabled
[ 251.133501][ T11] Rebooting in 86400 seconds..