094551][ T6650] Call Trace:
[ 268.094557][ T6650]
[ 268.094564][ T6650] dump_stack_lvl+0x97/0xe0
[ 268.094594][ T6650] gfs2_meta_check_ii.cold+0xa/0x77
[ 268.094617][ T6650] gfs2_meta_buffer+0x1a2/0x1b0
[ 268.094645][ T6650] inode_go_instantiate+0x61/0x560
[ 268.094679][ T6650] gfs2_instantiate+0xa7/0x130
[ 268.094702][ T6650] gfs2_inode_lookup+0x49a/0x520
[ 268.094724][ T6650] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 268.094745][ T6650] gfs2_lookup_by_inum+0x2f/0xb0
[ 268.094766][ T6650] delete_work_func+0xa3/0x2d0
[ 268.094795][ T6650] ? _raw_spin_unlock_bh+0x9/0x20
[ 268.094819][ T6650] ? wg_packet_encrypt_worker+0x442/0x620
[ 268.094848][ T6650] process_one_work+0x277/0x5f0
[ 268.094877][ T6650] worker_thread+0x255/0x4a0
[ 268.094905][ T6650] ? __pfx_worker_thread+0x10/0x10
[ 268.094933][ T6650] kthread+0x14e/0x1a0
[ 268.094959][ T6650] ? __pfx_kthread+0x10/0x10
[ 268.094977][ T6650] ret_from_fork+0x23c/0x4b0
[ 268.094995][ T6650] ? __pfx_kthread+0x10/0x10
[ 268.095013][ T6650] ret_from_fork_asm+0x1a/0x30
[ 268.095048][ T6650]
[ 268.095055][ T6650] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 268.171988][ T7789] loop5: detected capacity change from 0 to 32768
[ 268.185337][ T7788] loop3: detected capacity change from 0 to 32768
[ 268.268828][ T7787] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 268.278894][ T7787] CPU: 0 UID: 0 PID: 7787 Comm: syz.1.204 Not tainted syzkaller #0 PREEMPT(full)
[ 268.278930][ T7787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 268.278943][ T7787] Call Trace:
[ 268.278949][ T7787]
[ 268.278956][ T7787] dump_stack_lvl+0x97/0xe0
[ 268.278987][ T7787] sysfs_warn_dup.cold+0x1c/0x28
[ 268.279019][ T7787] sysfs_create_dir_ns+0x129/0x140
[ 268.279043][ T7787] kobject_add_internal+0x104/0x310
[ 268.279077][ T7787] kobject_init_and_add+0xb2/0xf0
[ 268.279097][ T7787] ? alloc_workqueue_noprof+0xe0/0xb60
[ 268.279120][ T7787] gfs2_sys_fs_add+0xef/0x200
[ 268.279152][ T7787] gfs2_fill_super+0x896/0x1210
[ 268.279172][ T7787] ? sb_set_blocksize+0x8c/0x150
[ 268.279203][ T7787] ? setup_bdev_super+0x19d/0x330
[ 268.279232][ T7787] ? __pfx_gfs2_fill_super+0x10/0x10
[ 268.279250][ T7787] get_tree_bdev_flags+0x1c0/0x290
[ 268.279285][ T7787] gfs2_get_tree+0x26/0xd0
[ 268.279318][ T7787] vfs_get_tree+0x30/0x120
[ 268.279345][ T7787] path_mount+0x5a9/0x1360
[ 268.279370][ T7787] __x64_sys_mount+0x1a3/0x1e0
[ 268.279393][ T7787] do_syscall_64+0xe2/0xf80
[ 268.279420][ T7787] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 268.279441][ T7787] RIP: 0033:0x7fd54fd9c10a
[ 268.279456][ T7787] 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
[ 268.279477][ T7787] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 268.279496][ T7787] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 268.279510][ T7787] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 268.279523][ T7787] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 268.279536][ T7787] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 268.279548][ T7787] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 268.279563][ T7787]
[ 268.279574][ T7787] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 268.280962][ T7791] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 268.289246][ T7793] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 268.360908][ T7787] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 268.365949][ T7793] CPU: 0 UID: 0 PID: 7793 Comm: syz.0.208 Not tainted syzkaller #0 PREEMPT(full)
[ 268.365972][ T7793] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 268.365983][ T7793] Call Trace:
[ 268.365989][ T7793]
[ 268.365995][ T7793] dump_stack_lvl+0x97/0xe0
[ 268.366024][ T7793] sysfs_warn_dup.cold+0x1c/0x28
[ 268.366052][ T7793] sysfs_create_dir_ns+0x129/0x140
[ 268.366074][ T7793] kobject_add_internal+0x104/0x310
[ 268.366105][ T7793] kobject_init_and_add+0xb2/0xf0
[ 268.366122][ T7793] ? alloc_workqueue_noprof+0xe0/0xb60
[ 268.366143][ T7793] gfs2_sys_fs_add+0xef/0x200
[ 268.366169][ T7793] gfs2_fill_super+0x896/0x1210
[ 268.366187][ T7793] ? sb_set_blocksize+0x8c/0x150
[ 268.366214][ T7793] ? setup_bdev_super+0x19d/0x330
[ 268.366240][ T7793] ? __pfx_gfs2_fill_super+0x10/0x10
[ 268.366256][ T7793] get_tree_bdev_flags+0x1c0/0x290
[ 268.366286][ T7793] gfs2_get_tree+0x26/0xd0
[ 268.366313][ T7793] vfs_get_tree+0x30/0x120
[ 268.366337][ T7793] path_mount+0x5a9/0x1360
[ 268.366360][ T7793] __x64_sys_mount+0x1a3/0x1e0
[ 268.366383][ T7793] do_syscall_64+0xe2/0xf80
[ 268.366406][ T7793] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 268.366425][ T7793] RIP: 0033:0x7f1c46b9c10a
[ 268.366439][ T7793] 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
[ 268.366457][ T7793] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 268.366475][ T7793] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 268.366487][ T7793] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 268.366499][ T7793] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 268.366510][ T7793] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 268.366522][ T7793] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 268.366536][ T7793]
[ 268.366546][ T7793] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 268.470259][ T7791] CPU: 1 UID: 0 PID: 7791 Comm: syz.6.207 Not tainted syzkaller #0 PREEMPT(full)
[ 268.470284][ T7791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 268.470295][ T7791] Call Trace:
[ 268.470301][ T7791]
[ 268.470308][ T7791] dump_stack_lvl+0x97/0xe0
[ 268.470337][ T7791] sysfs_warn_dup.cold+0x1c/0x28
[ 268.470365][ T7791] sysfs_create_dir_ns+0x129/0x140
[ 268.470388][ T7791] kobject_add_internal+0x104/0x310
[ 268.470419][ T7791] kobject_init_and_add+0xb2/0xf0
[ 268.470436][ T7791] ? alloc_workqueue_noprof+0xe0/0xb60
[ 268.470457][ T7791] gfs2_sys_fs_add+0xef/0x200
[ 268.470485][ T7791] gfs2_fill_super+0x896/0x1210
[ 268.470503][ T7791] ? sb_set_blocksize+0x8c/0x150
[ 268.470531][ T7791] ? setup_bdev_super+0x19d/0x330
[ 268.470571][ T7791] ? __pfx_gfs2_fill_super+0x10/0x10
[ 268.470588][ T7791] get_tree_bdev_flags+0x1c0/0x290
[ 268.470620][ T7791] gfs2_get_tree+0x26/0xd0
[ 268.470650][ T7791] vfs_get_tree+0x30/0x120
[ 268.470674][ T7791] path_mount+0x5a9/0x1360
[ 268.470697][ T7791] __x64_sys_mount+0x1a3/0x1e0
[ 268.470719][ T7791] do_syscall_64+0xe2/0xf80
[ 268.470742][ T7791] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 268.470762][ T7791] RIP: 0033:0x7f1d0699c10a
[ 268.470776][ T7791] 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
[ 268.470795][ T7791] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 268.470812][ T7791] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 268.470825][ T7791] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 268.470836][ T7791] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 268.470848][ T7791] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 268.470860][ T7791] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 268.470874][ T7791]
[ 268.470883][ T7791] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 268.485648][ T7793] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 268.493673][ T7788] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 268.500330][ T7791] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 268.507684][ T7788] CPU: 1 UID: 0 PID: 7788 Comm: syz.3.205 Not tainted syzkaller #0 PREEMPT(full)
[ 268.507708][ T7788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 268.507719][ T7788] Call Trace:
[ 268.507725][ T7788]
[ 268.507731][ T7788] dump_stack_lvl+0x97/0xe0
[ 268.507760][ T7788] sysfs_warn_dup.cold+0x1c/0x28
[ 268.507788][ T7788] sysfs_create_dir_ns+0x129/0x140
[ 268.507811][ T7788] kobject_add_internal+0x104/0x310
[ 268.507842][ T7788] kobject_init_and_add+0xb2/0xf0
[ 268.507860][ T7788] ? alloc_workqueue_noprof+0xe0/0xb60
[ 268.507881][ T7788] gfs2_sys_fs_add+0xef/0x200
[ 268.507909][ T7788] gfs2_fill_super+0x896/0x1210
[ 268.507927][ T7788] ? sb_set_blocksize+0x8c/0x150
[ 268.507954][ T7788] ? setup_bdev_super+0x19d/0x330
[ 268.507980][ T7788] ? __pfx_gfs2_fill_super+0x10/0x10
[ 268.507997][ T7788] get_tree_bdev_flags+0x1c0/0x290
[ 268.508035][ T7788] gfs2_get_tree+0x26/0xd0
[ 268.508064][ T7788] vfs_get_tree+0x30/0x120
[ 268.508088][ T7788] path_mount+0x5a9/0x1360
[ 268.508112][ T7788] __x64_sys_mount+0x1a3/0x1e0
[ 268.508135][ T7788] do_syscall_64+0xe2/0xf80
[ 268.508160][ T7788] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 268.508180][ T7788] RIP: 0033:0x7f11c2f9c10a
[ 268.508194][ T7788] 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
[ 268.508212][ T7788] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 268.508230][ T7788] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 268.508243][ T7788] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 268.508255][ T7788] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 268.508266][ T7788] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 268.508278][ T7788] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 268.508293][ T7788]
[ 268.508302][ T7788] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 268.515822][ T7789] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 268.526175][ T7795] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 268.530050][ T7789] CPU: 0 UID: 0 PID: 7789 Comm: syz.5.206 Not tainted syzkaller #0 PREEMPT(full)
[ 268.530073][ T7789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 268.530084][ T7789] Call Trace:
[ 268.530089][ T7789]
[ 268.530095][ T7789] dump_stack_lvl+0x97/0xe0
[ 268.530123][ T7789] sysfs_warn_dup.cold+0x1c/0x28
[ 268.530156][ T7789] sysfs_create_dir_ns+0x129/0x140
[ 268.530180][ T7789] kobject_add_internal+0x104/0x310
[ 268.530210][ T7789] kobject_init_and_add+0xb2/0xf0
[ 268.530228][ T7789] ? alloc_workqueue_noprof+0xe0/0xb60
[ 268.530249][ T7789] gfs2_sys_fs_add+0xef/0x200
[ 268.530275][ T7789] gfs2_fill_super+0x896/0x1210
[ 268.530293][ T7789] ? sb_set_blocksize+0x8c/0x150
[ 268.530320][ T7789] ? setup_bdev_super+0x19d/0x330
[ 268.530346][ T7789] ? __pfx_gfs2_fill_super+0x10/0x10
[ 268.530363][ T7789] get_tree_bdev_flags+0x1c0/0x290
[ 268.530393][ T7789] gfs2_get_tree+0x26/0xd0
[ 268.530421][ T7789] vfs_get_tree+0x30/0x120
[ 268.530444][ T7789] path_mount+0x5a9/0x1360
[ 268.530468][ T7789] __x64_sys_mount+0x1a3/0x1e0
[ 268.530490][ T7789] do_syscall_64+0xe2/0xf80
[ 268.530514][ T7789] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 268.530533][ T7789] RIP: 0033:0x7fc36c39c10a
[ 268.530565][ T7789] 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
[ 268.530583][ T7789] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 268.530601][ T7789] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 268.530613][ T7789] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 268.530625][ T7789] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 268.530637][ T7789] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 268.530648][ T7789] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 268.530662][ T7789]
[ 268.530761][ T7789] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 268.549817][ T7795] CPU: 1 UID: 0 PID: 7795 Comm: syz.4.210 Not tainted syzkaller #0 PREEMPT(full)
[ 268.549843][ T7795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 268.549854][ T7795] Call Trace:
[ 268.549860][ T7795]
[ 268.549866][ T7795] dump_stack_lvl+0x97/0xe0
[ 268.549895][ T7795] sysfs_warn_dup.cold+0x1c/0x28
[ 268.549924][ T7795] sysfs_create_dir_ns+0x129/0x140
[ 268.549947][ T7795] kobject_add_internal+0x104/0x310
[ 268.549979][ T7795] kobject_init_and_add+0xb2/0xf0
[ 268.549996][ T7795] ? alloc_workqueue_noprof+0xe0/0xb60
[ 268.550017][ T7795] gfs2_sys_fs_add+0xef/0x200
[ 268.550054][ T7795] gfs2_fill_super+0x896/0x1210
[ 268.550072][ T7795] ? sb_set_blocksize+0x8c/0x150
[ 268.550098][ T7795] ? setup_bdev_super+0x19d/0x330
[ 268.550130][ T7795] ? __pfx_gfs2_fill_super+0x10/0x10
[ 268.550147][ T7795] get_tree_bdev_flags+0x1c0/0x290
[ 268.550176][ T7795] gfs2_get_tree+0x26/0xd0
[ 268.550204][ T7795] vfs_get_tree+0x30/0x120
[ 268.550227][ T7795] path_mount+0x5a9/0x1360
[ 268.550250][ T7795] __x64_sys_mount+0x1a3/0x1e0
[ 268.550272][ T7795] do_syscall_64+0xe2/0xf80
[ 268.550296][ T7795] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 268.550316][ T7795] RIP: 0033:0x7f82cdb9c10a
[ 268.550329][ T7795] 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
[ 268.550347][ T7795] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 268.550365][ T7795] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 268.550377][ T7795] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 268.550389][ T7795] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 268.550400][ T7795] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 268.550412][ T7795] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 268.550426][ T7795]
[ 268.550468][ T7795] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 268.553712][ T7789] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 268.567325][ T7795] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 268.600512][ T7788] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 273.320282][ T6428] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 566
[ 273.335130][ T6428] CPU: 1 UID: 0 PID: 6428 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 273.335158][ T6428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 273.335170][ T6428] Call Trace:
[ 273.335176][ T6428]
[ 273.335183][ T6428] dump_stack_lvl+0x97/0xe0
[ 273.335208][ T6428] gfs2_assert_warn_i.cold+0x38/0x94
[ 273.335224][ T6428] gfs2_make_fs_ro+0x13d/0x220
[ 273.335239][ T6428] ? __pfx_autoremove_wake_function+0x10/0x10
[ 273.335261][ T6428] gfs2_put_super+0xb4/0x2d0
[ 273.335275][ T6428] ? __pfx_gfs2_put_super+0x10/0x10
[ 273.335290][ T6428] generic_shutdown_super+0xa4/0x160
[ 273.335311][ T6428] kill_block_super+0x1d/0x50
[ 273.335330][ T6428] gfs2_kill_sb+0x1b6/0x1e0
[ 273.335353][ T6428] deactivate_locked_super+0x4f/0x120
[ 273.335375][ T6428] deactivate_super+0xa4/0xc0
[ 273.335396][ T6428] cleanup_mnt+0x145/0x1f0
[ 273.335419][ T6428] task_work_run+0x95/0xf0
[ 273.335437][ T6428] exit_to_user_mode_loop+0xcf/0x440
[ 273.335452][ T6428] do_syscall_64+0x407/0xf80
[ 273.335471][ T6428] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 273.335487][ T6428] RIP: 0033:0x7fe647b9c0d7
[ 273.335499][ T6428] 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
[ 273.335513][ T6428] RSP: 002b:00007fff7e69e3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 273.335529][ T6428] RAX: 0000000000000000 RBX: 00007fe647c2d33b RCX: 00007fe647b9c0d7
[ 273.335538][ T6428] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff7e69e490
[ 273.335547][ T6428] RBP: 00007fff7e69e490 R08: 00007fff7e69f490 R09: 00000000ffffffff
[ 273.335556][ T6428] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7e69f520
[ 273.335564][ T6428] R13: 00007fe647c2d33b R14: 000000000004149a R15: 00007fff7e69f560
[ 273.335575][ T6428]
[ 273.611438][ T7819] set_capacity_and_notify: 3 callbacks suppressed
[ 273.611449][ T7819] loop2: detected capacity change from 0 to 32768
[ 273.633483][ T7819] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 273.641729][ T7819] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 273.654331][ T7819] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 273.662533][ T5831] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 273.669335][ T5831] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 273.684180][ T5831] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 14ms
[ 273.691670][ T5831] gfs2: fsid=syz:syz.0: jid=0: Done
[ 273.697019][ T7819] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 273.705043][ T7467] 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
[ 273.720340][ T7819] 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
[ 273.735902][ T7819] CPU: 1 UID: 0 PID: 7819 Comm: syz.2.209 Not tainted syzkaller #0 PREEMPT(full)
[ 273.735929][ T7819] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 273.735942][ T7819] Call Trace:
[ 273.735947][ T7819]
[ 273.735955][ T7819] dump_stack_lvl+0x97/0xe0
[ 273.735986][ T7819] gfs2_withdraw.cold+0xa/0x77
[ 273.736008][ T7819] gfs2_assert_withdraw_i.cold+0x2c/0x36
[ 273.736031][ T7819] inode_go_inval+0x1df/0x1f0
[ 273.736065][ T7819] gfs2_make_fs_rw+0x34/0xf0
[ 273.736086][ T7819] gfs2_fill_super+0xfbb/0x1210
[ 273.736105][ T7819] ? gfs2_fill_super+0xa23/0x1210
[ 273.736121][ T7819] ? setup_bdev_super+0x19d/0x330
[ 273.736145][ T7819] ? __pfx_gfs2_fill_super+0x10/0x10
[ 273.736160][ T7819] get_tree_bdev_flags+0x1c0/0x290
[ 273.736188][ T7819] gfs2_get_tree+0x26/0xd0
[ 273.736214][ T7819] vfs_get_tree+0x30/0x120
[ 273.736251][ T7819] path_mount+0x5a9/0x1360
[ 273.736273][ T7819] __x64_sys_mount+0x1a3/0x1e0
[ 273.736295][ T7819] do_syscall_64+0xe2/0xf80
[ 273.736317][ T7819] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 273.736337][ T7819] RIP: 0033:0x7fe647b9c10a
[ 273.736350][ T7819] 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
[ 273.736367][ T7819] RSP: 002b:00007fe648a24e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 273.736384][ T7819] RAX: ffffffffffffffda RBX: 00007fe648a24ee0 RCX: 00007fe647b9c10a
[ 273.736396][ T7819] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fe648a24ea0
[ 273.736407][ T7819] RBP: 0000200000037f40 R08: 00007fe648a24ee0 R09: 0000000000000000
[ 273.736418][ T7819] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 273.736429][ T7819] R13: 00007fe648a24ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 273.736442][ T7819]
[ 273.736451][ T7467] CPU: 0 UID: 0 PID: 7467 Comm: kworker/0:2H Not tainted syzkaller #0 PREEMPT(full)
[ 273.736473][ T7467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 273.736484][ T7467] Workqueue: gfs2-glock/syz:syz glock_work_func
[ 273.736510][ T7467] Call Trace:
[ 273.736514][ T7467]
[ 273.736520][ T7467] dump_stack_lvl+0x97/0xe0
[ 273.736541][ T7467] gfs2_assert_withdraw_i.cold+0x31/0x36
[ 273.736560][ T7467] ? __pfx_inode_go_inval+0x10/0x10
[ 273.736586][ T7467] inode_go_inval+0x1df/0x1f0
[ 273.736619][ T7467] do_xmote+0x12a/0x310
[ 273.736644][ T7467] run_queue+0x288/0x300
[ 273.736666][ T7467] glock_work_func+0xac/0x280
[ 273.736690][ T7467] process_one_work+0x277/0x5f0
[ 273.736714][ T7467] worker_thread+0x255/0x4a0
[ 273.736736][ T7467] ? __pfx_worker_thread+0x10/0x10
[ 273.736759][ T7467] kthread+0x14e/0x1a0
[ 273.736772][ T7467] ? __pfx_kthread+0x10/0x10
[ 273.736787][ T7467] ret_from_fork+0x23c/0x4b0
[ 273.736801][ T7467] ? __pfx_kthread+0x10/0x10
[ 273.736815][ T7467] ret_from_fork_asm+0x1a/0x30
[ 273.736844][ T7467]
[ 273.736852][ T7819] CPU: 1 UID: 0 PID: 7819 Comm: syz.2.209 Not tainted syzkaller #0 PREEMPT(full)
[ 273.736881][ T7819] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 273.736891][ T7819] Call Trace:
[ 273.736896][ T7819]
[ 273.736902][ T7819] dump_stack_lvl+0x97/0xe0
[ 273.736926][ T7819] gfs2_assert_withdraw_i.cold+0x31/0x36
[ 273.736947][ T7819] inode_go_inval+0x1df/0x1f0
[ 273.736979][ T7819] gfs2_make_fs_rw+0x34/0xf0
[ 273.736997][ T7819] gfs2_fill_super+0xfbb/0x1210
[ 273.737015][ T7819] ? gfs2_fill_super+0xa23/0x1210
[ 273.737034][ T7819] ? setup_bdev_super+0x19d/0x330
[ 273.737064][ T7819] ? __pfx_gfs2_fill_super+0x10/0x10
[ 273.737083][ T7819] get_tree_bdev_flags+0x1c0/0x290
[ 273.737118][ T7819] gfs2_get_tree+0x26/0xd0
[ 273.737150][ T7819] vfs_get_tree+0x30/0x120
[ 273.737175][ T7819] path_mount+0x5a9/0x1360
[ 273.737200][ T7819] __x64_sys_mount+0x1a3/0x1e0
[ 273.737226][ T7819] do_syscall_64+0xe2/0xf80
[ 273.737253][ T7819] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 273.737281][ T7819] RIP: 0033:0x7fe647b9c10a
[ 273.737296][ T7819] 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
[ 273.737317][ T7819] RSP: 002b:00007fe648a24e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 273.737335][ T7819] RAX: ffffffffffffffda RBX: 00007fe648a24ee0 RCX: 00007fe647b9c10a
[ 273.737348][ T7819] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fe648a24ea0
[ 273.737360][ T7819] RBP: 0000200000037f40 R08: 00007fe648a24ee0 R09: 0000000000000000
[ 273.737371][ T7819] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 273.737384][ T7819] R13: 00007fe648a24ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 273.737399][ T7819]
[ 273.737558][ T7819] gfs2: fsid=syz:syz.0: can't make FS RW: -5
2026/04/10 12:28:42 executed programs: 208
[ 282.440012][ T7828] loop1: detected capacity change from 0 to 32768
[ 282.477842][ T7828] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 282.486163][ T7828] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 282.494408][ T7835] loop4: detected capacity change from 0 to 32768
[ 282.503393][ T7830] loop6: detected capacity change from 0 to 32768
[ 282.514231][ T7836] loop2: detected capacity change from 0 to 32768
[ 282.529196][ T7835] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 282.537136][ T7834] loop5: detected capacity change from 0 to 32768
[ 282.550299][ T7835] CPU: 0 UID: 0 PID: 7835 Comm: syz.4.215 Not tainted syzkaller #0 PREEMPT(full)
[ 282.550326][ T7835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 282.550339][ T7835] Call Trace:
[ 282.550345][ T7835]
[ 282.550352][ T7835] dump_stack_lvl+0x97/0xe0
[ 282.550398][ T7835] sysfs_warn_dup.cold+0x1c/0x28
[ 282.550424][ T7835] sysfs_create_dir_ns+0x129/0x140
[ 282.550444][ T7835] kobject_add_internal+0x104/0x310
[ 282.550473][ T7835] kobject_init_and_add+0xb2/0xf0
[ 282.550488][ T7835] ? alloc_workqueue_noprof+0xe0/0xb60
[ 282.550507][ T7835] gfs2_sys_fs_add+0xef/0x200
[ 282.550532][ T7835] gfs2_fill_super+0x896/0x1210
[ 282.550556][ T7835] ? sb_set_blocksize+0x8c/0x150
[ 282.550581][ T7835] ? setup_bdev_super+0x19d/0x330
[ 282.550605][ T7835] ? __pfx_gfs2_fill_super+0x10/0x10
[ 282.550620][ T7835] get_tree_bdev_flags+0x1c0/0x290
[ 282.550647][ T7835] gfs2_get_tree+0x26/0xd0
[ 282.550673][ T7835] vfs_get_tree+0x30/0x120
[ 282.550694][ T7835] path_mount+0x5a9/0x1360
[ 282.550716][ T7835] __x64_sys_mount+0x1a3/0x1e0
[ 282.550736][ T7835] do_syscall_64+0xe2/0xf80
[ 282.550758][ T7835] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 282.550776][ T7835] RIP: 0033:0x7f82cdb9c10a
[ 282.550789][ T7835] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 282.550807][ T7835] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 282.550823][ T7835] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 282.550835][ T7835] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 282.550846][ T7835] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 282.550856][ T7835] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 282.550867][ T7835] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 282.550880][ T7835]
[ 282.550893][ T7835] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 282.552460][ T7837] loop3: detected capacity change from 0 to 32768
[ 282.560113][ T7835] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 282.583493][ T7828] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 282.602214][ T7830] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 282.672434][ T7826] loop0: detected capacity change from 0 to 32768
[ 282.720692][ T7836] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 282.724219][ T7830] CPU: 1 UID: 0 PID: 7830 Comm: syz.6.217 Not tainted syzkaller #0 PREEMPT(full)
[ 282.724243][ T7830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 282.724254][ T7830] Call Trace:
[ 282.724259][ T7830]
[ 282.724265][ T7830] dump_stack_lvl+0x97/0xe0
[ 282.724293][ T7830] sysfs_warn_dup.cold+0x1c/0x28
[ 282.724321][ T7830] sysfs_create_dir_ns+0x129/0x140
[ 282.724343][ T7830] kobject_add_internal+0x104/0x310
[ 282.724374][ T7830] kobject_init_and_add+0xb2/0xf0
[ 282.724391][ T7830] ? alloc_workqueue_noprof+0xe0/0xb60
[ 282.724411][ T7830] gfs2_sys_fs_add+0xef/0x200
[ 282.724438][ T7830] gfs2_fill_super+0x896/0x1210
[ 282.724456][ T7830] ? sb_set_blocksize+0x8c/0x150
[ 282.724482][ T7830] ? setup_bdev_super+0x19d/0x330
[ 282.724508][ T7830] ? __pfx_gfs2_fill_super+0x10/0x10
[ 282.724524][ T7830] get_tree_bdev_flags+0x1c0/0x290
[ 282.724554][ T7830] gfs2_get_tree+0x26/0xd0
[ 282.724581][ T7830] vfs_get_tree+0x30/0x120
[ 282.724604][ T7830] path_mount+0x5a9/0x1360
[ 282.724627][ T7830] __x64_sys_mount+0x1a3/0x1e0
[ 282.724649][ T7830] do_syscall_64+0xe2/0xf80
[ 282.724673][ T7830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 282.724693][ T7830] RIP: 0033:0x7f1d0699c10a
[ 282.724707][ T7830] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 282.724725][ T7830] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 282.724744][ T7830] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 282.724756][ T7830] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 282.724768][ T7830] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 282.724780][ T7830] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 282.724800][ T7830] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 282.724815][ T7830]
[ 282.724825][ T7830] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 282.731410][ T7836] CPU: 0 UID: 0 PID: 7836 Comm: syz.2.213 Not tainted syzkaller #0 PREEMPT(full)
[ 282.731433][ T7836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 282.731444][ T7836] Call Trace:
[ 282.731449][ T7836]
[ 282.731455][ T7836] dump_stack_lvl+0x97/0xe0
[ 282.731480][ T7836] sysfs_warn_dup.cold+0x1c/0x28
[ 282.731507][ T7836] sysfs_create_dir_ns+0x129/0x140
[ 282.731529][ T7836] kobject_add_internal+0x104/0x310
[ 282.731598][ T7836] kobject_init_and_add+0xb2/0xf0
[ 282.731615][ T7836] ? alloc_workqueue_noprof+0xe0/0xb60
[ 282.731635][ T7836] gfs2_sys_fs_add+0xef/0x200
[ 282.731661][ T7836] gfs2_fill_super+0x896/0x1210
[ 282.731678][ T7836] ? sb_set_blocksize+0x8c/0x150
[ 282.731704][ T7836] ? setup_bdev_super+0x19d/0x330
[ 282.731730][ T7836] ? __pfx_gfs2_fill_super+0x10/0x10
[ 282.731747][ T7836] get_tree_bdev_flags+0x1c0/0x290
[ 282.731777][ T7836] gfs2_get_tree+0x26/0xd0
[ 282.731805][ T7836] vfs_get_tree+0x30/0x120
[ 282.731828][ T7836] path_mount+0x5a9/0x1360
[ 282.731851][ T7836] __x64_sys_mount+0x1a3/0x1e0
[ 282.731874][ T7836] do_syscall_64+0xe2/0xf80
[ 282.731897][ T7836] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 282.731916][ T7836] RIP: 0033:0x7fe647b9c10a
[ 282.731929][ T7836] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 282.731948][ T7836] RSP: 002b:00007fe648a24e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 282.731965][ T7836] RAX: ffffffffffffffda RBX: 00007fe648a24ee0 RCX: 00007fe647b9c10a
[ 282.731977][ T7836] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fe648a24ea0
[ 282.731989][ T7836] RBP: 0000200000037f40 R08: 00007fe648a24ee0 R09: 0000000000000000
[ 282.732000][ T7836] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 282.732011][ T7836] R13: 00007fe648a24ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 282.732025][ T7836]
[ 282.732033][ T7836] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 282.740108][ T6856] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 282.743224][ T7836] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 282.816234][ T6856] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 282.818786][ T7830] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 282.890837][ T6856] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 74ms
[ 282.900253][ T7834] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 282.903576][ T6856] gfs2: fsid=syz:syz.0: jid=0: Done
[ 282.907599][ T7834] CPU: 0 UID: 0 PID: 7834 Comm: syz.5.216 Not tainted syzkaller #0 PREEMPT(full)
[ 282.907622][ T7834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 282.907634][ T7834] Call Trace:
[ 282.907639][ T7834]
[ 282.907646][ T7834] dump_stack_lvl+0x97/0xe0
[ 282.907674][ T7834] sysfs_warn_dup.cold+0x1c/0x28
[ 282.907703][ T7834] sysfs_create_dir_ns+0x129/0x140
[ 282.907725][ T7834] kobject_add_internal+0x104/0x310
[ 282.907756][ T7834] kobject_init_and_add+0xb2/0xf0
[ 282.907774][ T7834] ? alloc_workqueue_noprof+0xe0/0xb60
[ 282.907795][ T7834] gfs2_sys_fs_add+0xef/0x200
[ 282.907823][ T7834] gfs2_fill_super+0x896/0x1210
[ 282.907841][ T7834] ? sb_set_blocksize+0x8c/0x150
[ 282.907868][ T7834] ? setup_bdev_super+0x19d/0x330
[ 282.907895][ T7834] ? __pfx_gfs2_fill_super+0x10/0x10
[ 282.907912][ T7834] get_tree_bdev_flags+0x1c0/0x290
[ 282.907942][ T7834] gfs2_get_tree+0x26/0xd0
[ 282.907970][ T7834] vfs_get_tree+0x30/0x120
[ 282.907994][ T7834] path_mount+0x5a9/0x1360
[ 282.908018][ T7834] __x64_sys_mount+0x1a3/0x1e0
[ 282.908041][ T7834] do_syscall_64+0xe2/0xf80
[ 282.908065][ T7834] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 282.908086][ T7834] RIP: 0033:0x7fc36c39c10a
[ 282.908101][ T7834] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 282.908120][ T7834] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 282.908138][ T7834] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 282.908155][ T7834] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 282.908167][ T7834] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 282.908178][ T7834] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 282.908190][ T7834] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 282.908204][ T7834]
[ 282.908223][ T7834] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 282.916144][ T7828] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 282.918323][ T7834] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 282.950277][ T7837] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 283.000721][ T7826] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 283.003119][ T7837] CPU: 1 UID: 0 PID: 7837 Comm: syz.3.214 Not tainted syzkaller #0 PREEMPT(full)
[ 283.003144][ T7837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 283.003155][ T7837] Call Trace:
[ 283.003162][ T7837]
[ 283.003168][ T7837] dump_stack_lvl+0x97/0xe0
[ 283.003197][ T7837] sysfs_warn_dup.cold+0x1c/0x28
[ 283.003226][ T7837] sysfs_create_dir_ns+0x129/0x140
[ 283.003249][ T7837] kobject_add_internal+0x104/0x310
[ 283.003281][ T7837] kobject_init_and_add+0xb2/0xf0
[ 283.003298][ T7837] ? alloc_workqueue_noprof+0xe0/0xb60
[ 283.003319][ T7837] gfs2_sys_fs_add+0xef/0x200
[ 283.003347][ T7837] gfs2_fill_super+0x896/0x1210
[ 283.003365][ T7837] ? sb_set_blocksize+0x8c/0x150
[ 283.003392][ T7837] ? setup_bdev_super+0x19d/0x330
[ 283.003419][ T7837] ? __pfx_gfs2_fill_super+0x10/0x10
[ 283.003437][ T7837] get_tree_bdev_flags+0x1c0/0x290
[ 283.003467][ T7837] gfs2_get_tree+0x26/0xd0
[ 283.003495][ T7837] vfs_get_tree+0x30/0x120
[ 283.003518][ T7837] path_mount+0x5a9/0x1360
[ 283.003540][ T7837] __x64_sys_mount+0x1a3/0x1e0
[ 283.003563][ T7837] do_syscall_64+0xe2/0xf80
[ 283.003586][ T7837] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 283.003613][ T7837] RIP: 0033:0x7f11c2f9c10a
[ 283.003627][ T7837] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 283.003646][ T7837] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 283.003663][ T7837] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 283.003676][ T7837] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 283.003687][ T7837] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 283.003698][ T7837] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 283.003710][ T7837] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 283.003724][ T7837]
[ 283.003734][ T7837] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 283.113654][ T7826] CPU: 0 UID: 0 PID: 7826 Comm: syz.0.211 Not tainted syzkaller #0 PREEMPT(full)
[ 283.113678][ T7826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 283.113689][ T7826] Call Trace:
[ 283.113695][ T7826]
[ 283.113701][ T7826] dump_stack_lvl+0x97/0xe0
[ 283.113730][ T7826] sysfs_warn_dup.cold+0x1c/0x28
[ 283.113760][ T7826] sysfs_create_dir_ns+0x129/0x140
[ 283.113783][ T7826] kobject_add_internal+0x104/0x310
[ 283.113814][ T7826] kobject_init_and_add+0xb2/0xf0
[ 283.113832][ T7826] ? alloc_workqueue_noprof+0xe0/0xb60
[ 283.113853][ T7826] gfs2_sys_fs_add+0xef/0x200
[ 283.113881][ T7826] gfs2_fill_super+0x896/0x1210
[ 283.113898][ T7826] ? sb_set_blocksize+0x8c/0x150
[ 283.113926][ T7826] ? setup_bdev_super+0x19d/0x330
[ 283.113952][ T7826] ? __pfx_gfs2_fill_super+0x10/0x10
[ 283.113969][ T7826] get_tree_bdev_flags+0x1c0/0x290
[ 283.114000][ T7826] gfs2_get_tree+0x26/0xd0
[ 283.114028][ T7826] vfs_get_tree+0x30/0x120
[ 283.114052][ T7826] path_mount+0x5a9/0x1360
[ 283.114076][ T7826] __x64_sys_mount+0x1a3/0x1e0
[ 283.114099][ T7826] do_syscall_64+0xe2/0xf80
[ 283.114123][ T7826] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 283.114142][ T7826] RIP: 0033:0x7f1c46b9c10a
[ 283.114156][ T7826] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 283.114175][ T7826] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 283.114193][ T7826] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 283.114206][ T7826] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 283.114218][ T7826] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 283.114230][ T7826] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 283.114241][ T7826] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 283.114256][ T7826]
[ 283.114266][ T7826] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 283.204547][ T7837] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 283.208833][ T7826] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 283.312839][ T5831] 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
[ 283.928174][ T6856] 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
[ 283.930069][ T7861] loop4: detected capacity change from 0 to 32768
[ 283.943503][ T5945] 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
[ 283.943541][ T5945] CPU: 1 UID: 0 PID: 5945 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT(full)
[ 283.943564][ T5945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 283.943577][ T5945] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 283.943608][ T5945] Call Trace:
[ 283.943614][ T5945]
[ 283.943620][ T5945] dump_stack_lvl+0x97/0xe0
[ 283.943646][ T5945] gfs2_meta_check_ii.cold+0xa/0x77
[ 283.943667][ T5945] gfs2_meta_buffer+0x1a2/0x1b0
[ 283.943691][ T5945] inode_go_instantiate+0x61/0x560
[ 283.943721][ T5945] gfs2_instantiate+0xa7/0x130
[ 283.943742][ T5945] gfs2_inode_lookup+0x49a/0x520
[ 283.943762][ T5945] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 283.943782][ T5945] gfs2_lookup_by_inum+0x2f/0xb0
[ 283.943800][ T5945] delete_work_func+0xa3/0x2d0
[ 283.943827][ T5945] ? _raw_spin_unlock_bh+0x9/0x20
[ 283.943850][ T5945] ? wg_packet_encrypt_worker+0x442/0x620
[ 283.943876][ T5945] process_one_work+0x277/0x5f0
[ 283.943902][ T5945] worker_thread+0x255/0x4a0
[ 283.943926][ T5945] ? __pfx_worker_thread+0x10/0x10
[ 283.943950][ T5945] kthread+0x14e/0x1a0
[ 283.943966][ T5945] ? __pfx_kthread+0x10/0x10
[ 283.943982][ T5945] ret_from_fork+0x23c/0x4b0
[ 283.943999][ T5945] ? __pfx_kthread+0x10/0x10
[ 283.944015][ T5945] ret_from_fork_asm+0x1a/0x30
[ 283.944045][ T5945]
[ 283.944051][ T5945] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 284.094128][ T7864] loop6: detected capacity change from 0 to 32768
[ 284.131676][ T7861] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 284.142052][ T7861] CPU: 0 UID: 0 PID: 7861 Comm: syz.4.218 Not tainted syzkaller #0 PREEMPT(full)
[ 284.142077][ T7861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 284.142089][ T7861] Call Trace:
[ 284.142095][ T7861]
[ 284.142101][ T7861] dump_stack_lvl+0x97/0xe0
[ 284.142132][ T7861] sysfs_warn_dup.cold+0x1c/0x28
[ 284.142163][ T7861] sysfs_create_dir_ns+0x129/0x140
[ 284.142189][ T7861] kobject_add_internal+0x104/0x310
[ 284.142224][ T7861] kobject_init_and_add+0xb2/0xf0
[ 284.142243][ T7861] ? alloc_workqueue_noprof+0xe0/0xb60
[ 284.142265][ T7861] gfs2_sys_fs_add+0xef/0x200
[ 284.142296][ T7861] gfs2_fill_super+0x896/0x1210
[ 284.142315][ T7861] ? sb_set_blocksize+0x8c/0x150
[ 284.142346][ T7861] ? setup_bdev_super+0x19d/0x330
[ 284.142377][ T7861] ? __pfx_gfs2_fill_super+0x10/0x10
[ 284.142396][ T7861] get_tree_bdev_flags+0x1c0/0x290
[ 284.142431][ T7861] gfs2_get_tree+0x26/0xd0
[ 284.142462][ T7861] vfs_get_tree+0x30/0x120
[ 284.142489][ T7861] path_mount+0x5a9/0x1360
[ 284.142515][ T7861] __x64_sys_mount+0x1a3/0x1e0
[ 284.142540][ T7861] do_syscall_64+0xe2/0xf80
[ 284.142575][ T7861] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 284.142597][ T7861] RIP: 0033:0x7f82cdb9c10a
[ 284.142612][ T7861] 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
[ 284.142633][ T7861] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 284.142652][ T7861] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 284.142666][ T7861] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 284.142680][ T7861] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 284.142693][ T7861] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 284.142705][ T7861] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 284.142721][ T7861]
[ 284.142732][ T7861] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 284.174503][ T7867] loop3: detected capacity change from 0 to 32768
[ 284.250381][ T7864] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 284.270207][ T7861] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 284.283823][ T7864] CPU: 0 UID: 0 PID: 7864 Comm: syz.6.220 Not tainted syzkaller #0 PREEMPT(full)
[ 284.283847][ T7864] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 284.283858][ T7864] Call Trace:
[ 284.283864][ T7864]
[ 284.283871][ T7864] dump_stack_lvl+0x97/0xe0
[ 284.283899][ T7864] sysfs_warn_dup.cold+0x1c/0x28
[ 284.283927][ T7864] sysfs_create_dir_ns+0x129/0x140
[ 284.283950][ T7864] kobject_add_internal+0x104/0x310
[ 284.283980][ T7864] kobject_init_and_add+0xb2/0xf0
[ 284.283997][ T7864] ? alloc_workqueue_noprof+0xe0/0xb60
[ 284.284018][ T7864] gfs2_sys_fs_add+0xef/0x200
[ 284.284045][ T7864] gfs2_fill_super+0x896/0x1210
[ 284.284062][ T7864] ? sb_set_blocksize+0x8c/0x150
[ 284.284089][ T7864] ? setup_bdev_super+0x19d/0x330
[ 284.284115][ T7864] ? __pfx_gfs2_fill_super+0x10/0x10
[ 284.284131][ T7864] get_tree_bdev_flags+0x1c0/0x290
[ 284.284160][ T7864] gfs2_get_tree+0x26/0xd0
[ 284.284188][ T7864] vfs_get_tree+0x30/0x120
[ 284.284212][ T7864] path_mount+0x5a9/0x1360
[ 284.284234][ T7864] __x64_sys_mount+0x1a3/0x1e0
[ 284.284256][ T7864] do_syscall_64+0xe2/0xf80
[ 284.284279][ T7864] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 284.284299][ T7864] RIP: 0033:0x7f1d0699c10a
[ 284.284313][ T7864] 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
[ 284.284331][ T7864] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 284.284349][ T7864] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 284.284361][ T7864] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 284.284373][ T7864] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 284.284384][ T7864] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 284.284396][ T7864] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 284.284410][ T7864]
[ 284.284419][ T7864] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 284.409637][ T7867] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 284.444161][ T7864] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 284.450266][ T7867] CPU: 1 UID: 0 PID: 7867 Comm: syz.3.222 Not tainted syzkaller #0 PREEMPT(full)
[ 284.450290][ T7867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 284.450301][ T7867] Call Trace:
[ 284.450307][ T7867]
[ 284.450313][ T7867] dump_stack_lvl+0x97/0xe0
[ 284.450360][ T7867] sysfs_warn_dup.cold+0x1c/0x28
[ 284.450389][ T7867] sysfs_create_dir_ns+0x129/0x140
[ 284.450411][ T7867] kobject_add_internal+0x104/0x310
[ 284.450442][ T7867] kobject_init_and_add+0xb2/0xf0
[ 284.450459][ T7867] ? alloc_workqueue_noprof+0xe0/0xb60
[ 284.450480][ T7867] gfs2_sys_fs_add+0xef/0x200
[ 284.450508][ T7867] gfs2_fill_super+0x896/0x1210
[ 284.450526][ T7867] ? sb_set_blocksize+0x8c/0x150
[ 284.450553][ T7867] ? setup_bdev_super+0x19d/0x330
[ 284.450579][ T7867] ? __pfx_gfs2_fill_super+0x10/0x10
[ 284.450595][ T7867] get_tree_bdev_flags+0x1c0/0x290
[ 284.450625][ T7867] gfs2_get_tree+0x26/0xd0
[ 284.450653][ T7867] vfs_get_tree+0x30/0x120
[ 284.450676][ T7867] path_mount+0x5a9/0x1360
[ 284.450699][ T7867] __x64_sys_mount+0x1a3/0x1e0
[ 284.450721][ T7867] do_syscall_64+0xe2/0xf80
[ 284.450744][ T7867] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 284.450772][ T7867] RIP: 0033:0x7f11c2f9c10a
[ 284.450787][ T7867] 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
[ 284.450806][ T7867] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 284.450824][ T7867] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 284.450836][ T7867] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 284.450848][ T7867] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 284.450860][ T7867] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 284.450871][ T7867] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 284.450885][ T7867]
[ 284.450896][ T7867] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 284.527281][ T7865] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 284.590984][ T7867] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 284.597557][ T7865] CPU: 0 UID: 0 PID: 7865 Comm: syz.2.221 Not tainted syzkaller #0 PREEMPT(full)
[ 284.597581][ T7865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 284.597592][ T7865] Call Trace:
[ 284.597597][ T7865]
[ 284.597604][ T7865] dump_stack_lvl+0x97/0xe0
[ 284.597633][ T7865] sysfs_warn_dup.cold+0x1c/0x28
[ 284.597661][ T7865] sysfs_create_dir_ns+0x129/0x140
[ 284.597684][ T7865] kobject_add_internal+0x104/0x310
[ 284.597716][ T7865] kobject_init_and_add+0xb2/0xf0
[ 284.597734][ T7865] ? alloc_workqueue_noprof+0xe0/0xb60
[ 284.597755][ T7865] gfs2_sys_fs_add+0xef/0x200
[ 284.597783][ T7865] gfs2_fill_super+0x896/0x1210
[ 284.597801][ T7865] ? sb_set_blocksize+0x8c/0x150
[ 284.597828][ T7865] ? setup_bdev_super+0x19d/0x330
[ 284.597854][ T7865] ? __pfx_gfs2_fill_super+0x10/0x10
[ 284.597871][ T7865] get_tree_bdev_flags+0x1c0/0x290
[ 284.597901][ T7865] gfs2_get_tree+0x26/0xd0
[ 284.597930][ T7865] vfs_get_tree+0x30/0x120
[ 284.597953][ T7865] path_mount+0x5a9/0x1360
[ 284.597977][ T7865] __x64_sys_mount+0x1a3/0x1e0
[ 284.598000][ T7865] do_syscall_64+0xe2/0xf80
[ 284.598024][ T7865] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 284.598044][ T7865] RIP: 0033:0x7fe647b9c10a
[ 284.598059][ T7865] 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
[ 284.598078][ T7865] RSP: 002b:00007fe648a24e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 284.598096][ T7865] RAX: ffffffffffffffda RBX: 00007fe648a24ee0 RCX: 00007fe647b9c10a
[ 284.598109][ T7865] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fe648a24ea0
[ 284.598121][ T7865] RBP: 0000200000037f40 R08: 00007fe648a24ee0 R09: 0000000000000000
[ 284.598132][ T7865] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 284.598144][ T7865] R13: 00007fe648a24ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 284.598159][ T7865]
[ 284.598169][ T7865] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 284.607886][ T7871] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 284.609729][ T7865] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 284.613170][ T7871] CPU: 1 UID: 0 PID: 7871 Comm: syz.5.223 Not tainted syzkaller #0 PREEMPT(full)
[ 284.613194][ T7871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 284.613205][ T7871] Call Trace:
[ 284.613211][ T7871]
[ 284.613217][ T7871] dump_stack_lvl+0x97/0xe0
[ 284.613247][ T7871] sysfs_warn_dup.cold+0x1c/0x28
[ 284.613275][ T7871] sysfs_create_dir_ns+0x129/0x140
[ 284.613298][ T7871] kobject_add_internal+0x104/0x310
[ 284.613329][ T7871] kobject_init_and_add+0xb2/0xf0
[ 284.613346][ T7871] ? alloc_workqueue_noprof+0xe0/0xb60
[ 284.613367][ T7871] gfs2_sys_fs_add+0xef/0x200
[ 284.613394][ T7871] gfs2_fill_super+0x896/0x1210
[ 284.613412][ T7871] ? sb_set_blocksize+0x8c/0x150
[ 284.613440][ T7871] ? setup_bdev_super+0x19d/0x330
[ 284.613466][ T7871] ? __pfx_gfs2_fill_super+0x10/0x10
[ 284.613483][ T7871] get_tree_bdev_flags+0x1c0/0x290
[ 284.613514][ T7871] gfs2_get_tree+0x26/0xd0
[ 284.613541][ T7871] vfs_get_tree+0x30/0x120
[ 284.613565][ T7871] path_mount+0x5a9/0x1360
[ 284.613588][ T7871] __x64_sys_mount+0x1a3/0x1e0
[ 284.613611][ T7871] do_syscall_64+0xe2/0xf80
[ 284.613635][ T7871] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 284.613655][ T7871] RIP: 0033:0x7fc36c39c10a
[ 284.613669][ T7871] 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
[ 284.613688][ T7871] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 284.613706][ T7871] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 284.613718][ T7871] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 284.613730][ T7871] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 284.613741][ T7871] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 284.613752][ T7871] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 284.613766][ T7871]
[ 284.613775][ T7871] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 284.681178][ T7870] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 284.689827][ T7871] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 284.693429][ T7870] CPU: 0 UID: 0 PID: 7870 Comm: syz.0.224 Not tainted syzkaller #0 PREEMPT(full)
[ 284.693453][ T7870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 284.693464][ T7870] Call Trace:
[ 284.693469][ T7870]
[ 284.693475][ T7870] dump_stack_lvl+0x97/0xe0
[ 284.693504][ T7870] sysfs_warn_dup.cold+0x1c/0x28
[ 284.693532][ T7870] sysfs_create_dir_ns+0x129/0x140
[ 284.693563][ T7870] kobject_add_internal+0x104/0x310
[ 284.693594][ T7870] kobject_init_and_add+0xb2/0xf0
[ 284.693612][ T7870] ? alloc_workqueue_noprof+0xe0/0xb60
[ 284.693632][ T7870] gfs2_sys_fs_add+0xef/0x200
[ 284.693659][ T7870] gfs2_fill_super+0x896/0x1210
[ 284.693678][ T7870] ? sb_set_blocksize+0x8c/0x150
[ 284.693705][ T7870] ? setup_bdev_super+0x19d/0x330
[ 284.693732][ T7870] ? __pfx_gfs2_fill_super+0x10/0x10
[ 284.693749][ T7870] get_tree_bdev_flags+0x1c0/0x290
[ 284.693779][ T7870] gfs2_get_tree+0x26/0xd0
[ 284.693807][ T7870] vfs_get_tree+0x30/0x120
[ 284.693831][ T7870] path_mount+0x5a9/0x1360
[ 284.693855][ T7870] __x64_sys_mount+0x1a3/0x1e0
[ 284.693878][ T7870] do_syscall_64+0xe2/0xf80
[ 284.693902][ T7870] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 284.693922][ T7870] RIP: 0033:0x7f1c46b9c10a
[ 284.693937][ T7870] 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
[ 284.693957][ T7870] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 284.693976][ T7870] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 284.693989][ T7870] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 284.694001][ T7870] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 284.694013][ T7870] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 284.694024][ T7870] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 284.694038][ T7870]
[ 284.694048][ T7870] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 285.449427][ T7870] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 289.470197][ T6421] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 566
[ 289.484505][ T6421] CPU: 0 UID: 0 PID: 6421 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 289.484529][ T6421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 289.484540][ T6421] Call Trace:
[ 289.484548][ T6421]
[ 289.484555][ T6421] dump_stack_lvl+0x97/0xe0
[ 289.484578][ T6421] gfs2_assert_warn_i.cold+0x38/0x94
[ 289.484594][ T6421] gfs2_make_fs_ro+0x13d/0x220
[ 289.484611][ T6421] ? __pfx_autoremove_wake_function+0x10/0x10
[ 289.484633][ T6421] gfs2_put_super+0xb4/0x2d0
[ 289.484648][ T6421] ? __pfx_gfs2_put_super+0x10/0x10
[ 289.484663][ T6421] generic_shutdown_super+0xa4/0x160
[ 289.484685][ T6421] kill_block_super+0x1d/0x50
[ 289.484704][ T6421] gfs2_kill_sb+0x1b6/0x1e0
[ 289.484726][ T6421] deactivate_locked_super+0x4f/0x120
[ 289.484749][ T6421] deactivate_super+0xa4/0xc0
[ 289.484776][ T6421] cleanup_mnt+0x145/0x1f0
[ 289.484799][ T6421] task_work_run+0x95/0xf0
[ 289.484817][ T6421] exit_to_user_mode_loop+0xcf/0x440
[ 289.484833][ T6421] do_syscall_64+0x407/0xf80
[ 289.484852][ T6421] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 289.484867][ T6421] RIP: 0033:0x7fd54fd9c0d7
[ 289.484879][ T6421] 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
[ 289.484894][ T6421] RSP: 002b:00007ffdeae5a7f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 289.484907][ T6421] RAX: 0000000000000000 RBX: 00007fd54fe2d33b RCX: 00007fd54fd9c0d7
[ 289.484916][ T6421] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdeae5a8b0
[ 289.484924][ T6421] RBP: 00007ffdeae5a8b0 R08: 00007ffdeae5b8b0 R09: 00000000ffffffff
[ 289.484933][ T6421] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdeae5b940
[ 289.484941][ T6421] R13: 00007fd54fe2d33b R14: 0000000000045318 R15: 00007ffdeae5b980
[ 289.484952][ T6421]
[ 289.755223][ T7886] set_capacity_and_notify: 3 callbacks suppressed
[ 289.755234][ T7886] loop1: detected capacity change from 0 to 32768
[ 289.779704][ T7886] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 289.790521][ T7886] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 289.801862][ T7886] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 289.810286][ T5831] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 289.817085][ T5831] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 289.832325][ T5831] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 15ms
[ 289.840284][ T5831] gfs2: fsid=syz:syz.0: jid=0: Done
[ 289.845528][ T7886] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 289.915211][ T5831] 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
[ 289.930898][ 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
[ 289.946480][ T5945] 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
[ 289.962048][ T6856] 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
[ 289.977389][ T5831] CPU: 1 UID: 0 PID: 5831 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT(full)
[ 289.977415][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 289.977430][ T5831] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 289.977463][ T5831] Call Trace:
[ 289.977470][ T5831]
[ 289.977477][ T5831] dump_stack_lvl+0x97/0xe0
[ 289.977503][ T5831] gfs2_meta_check_ii.cold+0xa/0x77
[ 289.977526][ T5831] gfs2_meta_buffer+0x1a2/0x1b0
[ 289.977552][ T5831] inode_go_instantiate+0x61/0x560
[ 289.977585][ T5831] gfs2_instantiate+0xa7/0x130
[ 289.977607][ T5831] gfs2_inode_lookup+0x49a/0x520
[ 289.977627][ T5831] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 289.977648][ T5831] gfs2_lookup_by_inum+0x2f/0xb0
[ 289.977670][ T5831] delete_work_func+0xa3/0x2d0
[ 289.977718][ T5831] process_one_work+0x277/0x5f0
[ 289.977744][ T5831] worker_thread+0x255/0x4a0
[ 289.977772][ T5831] ? __pfx_worker_thread+0x10/0x10
[ 289.977799][ T5831] kthread+0x14e/0x1a0
[ 289.977815][ T5831] ? __pfx_kthread+0x10/0x10
[ 289.977832][ T5831] ret_from_fork+0x23c/0x4b0
[ 289.977849][ T5831] ? __pfx_kthread+0x10/0x10
[ 289.977867][ T5831] ret_from_fork_asm+0x1a/0x30
[ 289.977902][ T5831]
[ 289.977908][ T5831] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 295.150241][ T6421] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 566
[ 295.164680][ T6421] CPU: 0 UID: 0 PID: 6421 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 295.164700][ T6421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 295.164709][ T6421] Call Trace:
[ 295.164714][ T6421]
[ 295.164719][ T6421] dump_stack_lvl+0x97/0xe0
[ 295.164741][ T6421] gfs2_assert_warn_i.cold+0x38/0x94
[ 295.164757][ T6421] gfs2_make_fs_ro+0x13d/0x220
[ 295.164773][ T6421] ? __pfx_autoremove_wake_function+0x10/0x10
[ 295.164796][ T6421] gfs2_put_super+0xb4/0x2d0
[ 295.164810][ T6421] ? __pfx_gfs2_put_super+0x10/0x10
[ 295.164825][ T6421] generic_shutdown_super+0xa4/0x160
[ 295.164846][ T6421] kill_block_super+0x1d/0x50
[ 295.164866][ T6421] gfs2_kill_sb+0x1b6/0x1e0
[ 295.164888][ T6421] deactivate_locked_super+0x4f/0x120
[ 295.164911][ T6421] deactivate_super+0xa4/0xc0
[ 295.164932][ T6421] cleanup_mnt+0x145/0x1f0
[ 295.164955][ T6421] task_work_run+0x95/0xf0
[ 295.164974][ T6421] exit_to_user_mode_loop+0xcf/0x440
[ 295.164989][ T6421] do_syscall_64+0x407/0xf80
[ 295.165008][ T6421] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 295.165023][ T6421] RIP: 0033:0x7fd54fd9c0d7
[ 295.165035][ T6421] 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
[ 295.165049][ T6421] RSP: 002b:00007ffdeae5a7f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 295.165063][ T6421] RAX: 0000000000000000 RBX: 00007fd54fe2d33b RCX: 00007fd54fd9c0d7
[ 295.165071][ T6421] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdeae5a8b0
[ 295.165080][ T6421] RBP: 00007ffdeae5a8b0 R08: 00007ffdeae5b8b0 R09: 00000000ffffffff
[ 295.165088][ T6421] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdeae5b940
[ 295.165097][ T6421] R13: 00007fd54fe2d33b R14: 0000000000046c86 R15: 00007ffdeae5b980
[ 295.165108][ T6421]
2026/04/10 12:28:58 executed programs: 222
[ 298.084118][ T7907] loop2: detected capacity change from 0 to 32768
[ 298.092617][ T7905] loop3: detected capacity change from 0 to 32768
[ 298.101731][ T7904] loop4: detected capacity change from 0 to 32768
[ 298.126490][ T7902] loop1: detected capacity change from 0 to 32768
[ 298.134516][ T7907] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 298.143154][ T7905] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 298.150864][ T7905] CPU: 1 UID: 0 PID: 7905 Comm: syz.3.228 Not tainted syzkaller #0 PREEMPT(full)
[ 298.150892][ T7905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 298.150903][ T7905] Call Trace:
[ 298.150908][ T7905]
[ 298.150915][ T7905] dump_stack_lvl+0x97/0xe0
[ 298.150946][ T7905] sysfs_warn_dup.cold+0x1c/0x28
[ 298.150978][ T7905] sysfs_create_dir_ns+0x129/0x140
[ 298.151004][ T7905] kobject_add_internal+0x104/0x310
[ 298.151040][ T7905] kobject_init_and_add+0xb2/0xf0
[ 298.151060][ T7905] ? alloc_workqueue_noprof+0xe0/0xb60
[ 298.151084][ T7905] gfs2_sys_fs_add+0xef/0x200
[ 298.151115][ T7905] gfs2_fill_super+0x896/0x1210
[ 298.151135][ T7905] ? sb_set_blocksize+0x8c/0x150
[ 298.151168][ T7905] ? setup_bdev_super+0x19d/0x330
[ 298.151198][ T7905] ? __pfx_gfs2_fill_super+0x10/0x10
[ 298.151217][ T7905] get_tree_bdev_flags+0x1c0/0x290
[ 298.151252][ T7905] gfs2_get_tree+0x26/0xd0
[ 298.151285][ T7905] vfs_get_tree+0x30/0x120
[ 298.151313][ T7905] path_mount+0x5a9/0x1360
[ 298.151348][ T7905] __x64_sys_mount+0x1a3/0x1e0
[ 298.151374][ T7905] do_syscall_64+0xe2/0xf80
[ 298.151401][ T7905] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 298.151423][ T7905] RIP: 0033:0x7f11c2f9c10a
[ 298.151440][ T7905] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 298.151461][ T7905] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 298.151481][ T7905] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 298.151495][ T7905] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 298.151509][ T7905] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 298.151522][ T7905] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 298.151534][ T7905] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 298.151550][ T7905]
[ 298.151562][ T7905] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 298.171488][ T7906] loop6: detected capacity change from 0 to 32768
[ 298.188400][ T7900] loop0: detected capacity change from 0 to 32768
[ 298.200209][ T7907] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 298.236623][ T7904] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 298.250200][ T7905] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 298.308024][ T7907] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 298.330249][ T7904] CPU: 0 UID: 0 PID: 7904 Comm: syz.4.229 Not tainted syzkaller #0 PREEMPT(full)
[ 298.330276][ T7904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 298.330287][ T7904] Call Trace:
[ 298.330294][ T7904]
[ 298.330302][ T7904] dump_stack_lvl+0x97/0xe0
[ 298.330331][ T7904] sysfs_warn_dup.cold+0x1c/0x28
[ 298.330359][ T7904] sysfs_create_dir_ns+0x129/0x140
[ 298.330383][ T7904] kobject_add_internal+0x104/0x310
[ 298.330414][ T7904] kobject_init_and_add+0xb2/0xf0
[ 298.330432][ T7904] ? alloc_workqueue_noprof+0xe0/0xb60
[ 298.330453][ T7904] gfs2_sys_fs_add+0xef/0x200
[ 298.330481][ T7904] gfs2_fill_super+0x896/0x1210
[ 298.330500][ T7904] ? sb_set_blocksize+0x8c/0x150
[ 298.330528][ T7904] ? setup_bdev_super+0x19d/0x330
[ 298.330555][ T7904] ? __pfx_gfs2_fill_super+0x10/0x10
[ 298.330572][ T7904] get_tree_bdev_flags+0x1c0/0x290
[ 298.330611][ T7904] gfs2_get_tree+0x26/0xd0
[ 298.330640][ T7904] vfs_get_tree+0x30/0x120
[ 298.330664][ T7904] path_mount+0x5a9/0x1360
[ 298.330687][ T7904] __x64_sys_mount+0x1a3/0x1e0
[ 298.330710][ T7904] do_syscall_64+0xe2/0xf80
[ 298.330734][ T7904] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 298.330754][ T7904] RIP: 0033:0x7f82cdb9c10a
[ 298.330769][ T7904] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 298.330787][ T7904] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 298.330806][ T7904] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 298.330819][ T7904] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 298.330831][ T7904] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 298.330842][ T7904] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 298.330854][ T7904] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 298.330869][ T7904]
[ 298.330881][ T7904] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 298.332798][ T5831] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 298.357312][ T7906] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 298.364723][ T5831] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 298.376932][ T7906] CPU: 0 UID: 0 PID: 7906 Comm: syz.6.231 Not tainted syzkaller #0 PREEMPT(full)
[ 298.376958][ T7906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 298.376969][ T7906] Call Trace:
[ 298.376975][ T7906]
[ 298.376981][ T7906] dump_stack_lvl+0x97/0xe0
[ 298.377011][ T7906] sysfs_warn_dup.cold+0x1c/0x28
[ 298.377040][ T7906] sysfs_create_dir_ns+0x129/0x140
[ 298.377062][ T7906] kobject_add_internal+0x104/0x310
[ 298.377094][ T7906] kobject_init_and_add+0xb2/0xf0
[ 298.377112][ T7906] ? alloc_workqueue_noprof+0xe0/0xb60
[ 298.377134][ T7906] gfs2_sys_fs_add+0xef/0x200
[ 298.377160][ T7906] gfs2_fill_super+0x896/0x1210
[ 298.377178][ T7906] ? sb_set_blocksize+0x8c/0x150
[ 298.377205][ T7906] ? setup_bdev_super+0x19d/0x330
[ 298.377232][ T7906] ? __pfx_gfs2_fill_super+0x10/0x10
[ 298.377248][ T7906] get_tree_bdev_flags+0x1c0/0x290
[ 298.377278][ T7906] gfs2_get_tree+0x26/0xd0
[ 298.377307][ T7906] vfs_get_tree+0x30/0x120
[ 298.377330][ T7906] path_mount+0x5a9/0x1360
[ 298.377353][ T7906] __x64_sys_mount+0x1a3/0x1e0
[ 298.377375][ T7906] do_syscall_64+0xe2/0xf80
[ 298.377399][ T7906] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 298.377419][ T7906] RIP: 0033:0x7f1d0699c10a
[ 298.377433][ T7906] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 298.377451][ T7906] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 298.377469][ T7906] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 298.377481][ T7906] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 298.377492][ T7906] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 298.377504][ T7906] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 298.377515][ T7906] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 298.377529][ T7906]
[ 298.377540][ T7906] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 298.393143][ T7901] loop5: detected capacity change from 0 to 32768
[ 298.398671][ T7906] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 298.408745][ T7904] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 298.418381][ T7902] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 298.478921][ T5831] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 114ms
[ 298.479997][ T7902] CPU: 0 UID: 0 PID: 7902 Comm: syz.1.226 Not tainted syzkaller #0 PREEMPT(full)
[ 298.480020][ T7902] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 298.480031][ T7902] Call Trace:
[ 298.480037][ T7902]
[ 298.480043][ T7902] dump_stack_lvl+0x97/0xe0
[ 298.480071][ T7902] sysfs_warn_dup.cold+0x1c/0x28
[ 298.480098][ T7902] sysfs_create_dir_ns+0x129/0x140
[ 298.480126][ T7902] kobject_add_internal+0x104/0x310
[ 298.480157][ T7902] kobject_init_and_add+0xb2/0xf0
[ 298.480174][ T7902] ? alloc_workqueue_noprof+0xe0/0xb60
[ 298.480194][ T7902] gfs2_sys_fs_add+0xef/0x200
[ 298.480221][ T7902] gfs2_fill_super+0x896/0x1210
[ 298.480239][ T7902] ? sb_set_blocksize+0x8c/0x150
[ 298.480266][ T7902] ? setup_bdev_super+0x19d/0x330
[ 298.480292][ T7902] ? __pfx_gfs2_fill_super+0x10/0x10
[ 298.480309][ T7902] get_tree_bdev_flags+0x1c0/0x290
[ 298.480340][ T7902] gfs2_get_tree+0x26/0xd0
[ 298.480368][ T7902] vfs_get_tree+0x30/0x120
[ 298.480391][ T7902] path_mount+0x5a9/0x1360
[ 298.480414][ T7902] __x64_sys_mount+0x1a3/0x1e0
[ 298.480437][ T7902] do_syscall_64+0xe2/0xf80
[ 298.480461][ T7902] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 298.480481][ T7902] RIP: 0033:0x7fd54fd9c10a
[ 298.480496][ T7902] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 298.480514][ T7902] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 298.480533][ T7902] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 298.480545][ T7902] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 298.480557][ T7902] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 298.480569][ T7902] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 298.480588][ T7902] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 298.480602][ T7902]
[ 298.480631][ T7902] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 298.513428][ T5831] gfs2: fsid=syz:syz.0: jid=0: Done
[ 298.519196][ T7902] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 298.597861][ T7900] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 298.603011][ T7907] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 298.609600][ T7900] CPU: 1 UID: 0 PID: 7900 Comm: syz.0.225 Not tainted syzkaller #0 PREEMPT(full)
[ 298.609624][ T7900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 298.609635][ T7900] Call Trace:
[ 298.609640][ T7900]
[ 298.609647][ T7900] dump_stack_lvl+0x97/0xe0
[ 298.609676][ T7900] sysfs_warn_dup.cold+0x1c/0x28
[ 298.609704][ T7900] sysfs_create_dir_ns+0x129/0x140
[ 298.609728][ T7900] kobject_add_internal+0x104/0x310
[ 298.609759][ T7900] kobject_init_and_add+0xb2/0xf0
[ 298.609777][ T7900] ? alloc_workqueue_noprof+0xe0/0xb60
[ 298.609799][ T7900] gfs2_sys_fs_add+0xef/0x200
[ 298.609826][ T7900] gfs2_fill_super+0x896/0x1210
[ 298.609844][ T7900] ? sb_set_blocksize+0x8c/0x150
[ 298.609872][ T7900] ? setup_bdev_super+0x19d/0x330
[ 298.609899][ T7900] ? __pfx_gfs2_fill_super+0x10/0x10
[ 298.609916][ T7900] get_tree_bdev_flags+0x1c0/0x290
[ 298.609946][ T7900] gfs2_get_tree+0x26/0xd0
[ 298.609974][ T7900] vfs_get_tree+0x30/0x120
[ 298.609998][ T7900] path_mount+0x5a9/0x1360
[ 298.610021][ T7900] __x64_sys_mount+0x1a3/0x1e0
[ 298.610044][ T7900] do_syscall_64+0xe2/0xf80
[ 298.610068][ T7900] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 298.610088][ T7900] RIP: 0033:0x7f1c46b9c10a
[ 298.610102][ T7900] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 298.610126][ T7900] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 298.610144][ T7900] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 298.610173][ T7900] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 298.610185][ T7900] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 298.610196][ T7900] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 298.610207][ T7900] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 298.610222][ T7900]
[ 298.610451][ T7900] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 298.689372][ T7901] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 298.990197][ T7900] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 299.030801][ T7901] CPU: 0 UID: 0 PID: 7901 Comm: syz.5.230 Not tainted syzkaller #0 PREEMPT(full)
[ 299.030826][ T7901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 299.030838][ T7901] Call Trace:
[ 299.030843][ T7901]
[ 299.030849][ T7901] dump_stack_lvl+0x97/0xe0
[ 299.030879][ T7901] sysfs_warn_dup.cold+0x1c/0x28
[ 299.030907][ T7901] sysfs_create_dir_ns+0x129/0x140
[ 299.030930][ T7901] kobject_add_internal+0x104/0x310
[ 299.030961][ T7901] kobject_init_and_add+0xb2/0xf0
[ 299.030978][ T7901] ? alloc_workqueue_noprof+0xe0/0xb60
[ 299.030999][ T7901] gfs2_sys_fs_add+0xef/0x200
[ 299.031025][ T7901] gfs2_fill_super+0x896/0x1210
[ 299.031043][ T7901] ? sb_set_blocksize+0x8c/0x150
[ 299.031070][ T7901] ? setup_bdev_super+0x19d/0x330
[ 299.031096][ T7901] ? __pfx_gfs2_fill_super+0x10/0x10
[ 299.031121][ T7901] get_tree_bdev_flags+0x1c0/0x290
[ 299.031151][ T7901] gfs2_get_tree+0x26/0xd0
[ 299.031179][ T7901] vfs_get_tree+0x30/0x120
[ 299.031203][ T7901] path_mount+0x5a9/0x1360
[ 299.031226][ T7901] __x64_sys_mount+0x1a3/0x1e0
[ 299.031249][ T7901] do_syscall_64+0xe2/0xf80
[ 299.031273][ T7901] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 299.031292][ T7901] RIP: 0033:0x7fc36c39c10a
[ 299.031307][ T7901] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 299.031326][ T7901] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 299.031344][ T7901] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 299.031355][ T7901] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 299.031367][ T7901] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 299.031379][ T7901] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 299.031390][ T7901] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 299.031405][ T7901]
[ 299.031415][ T7901] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 299.144396][ T5831] 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
[ 299.266950][ T7901] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 299.267400][ T5945] 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
[ 299.315859][ T7926] loop4: detected capacity change from 0 to 32768
[ 299.323483][ T23] 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
[ 299.511970][ T7926] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 299.519331][ T6856] 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
[ 299.603962][ T5945] CPU: 1 UID: 0 PID: 5945 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT(full)
[ 299.603991][ T5945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 299.604006][ T5945] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 299.604042][ T5945] Call Trace:
[ 299.604049][ T5945]
[ 299.604056][ T5945] dump_stack_lvl+0x97/0xe0
[ 299.604085][ T5945] gfs2_meta_check_ii.cold+0xa/0x77
[ 299.604108][ T5945] gfs2_meta_buffer+0x1a2/0x1b0
[ 299.604136][ T5945] inode_go_instantiate+0x61/0x560
[ 299.604170][ T5945] gfs2_instantiate+0xa7/0x130
[ 299.604195][ T5945] gfs2_inode_lookup+0x49a/0x520
[ 299.604240][ T5945] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 299.604262][ T5945] gfs2_lookup_by_inum+0x2f/0xb0
[ 299.604283][ T5945] delete_work_func+0xa3/0x2d0
[ 299.604314][ T5945] process_one_work+0x277/0x5f0
[ 299.604343][ T5945] worker_thread+0x255/0x4a0
[ 299.604371][ T5945] ? __pfx_worker_thread+0x10/0x10
[ 299.604407][ T5945] kthread+0x14e/0x1a0
[ 299.604425][ T5945] ? __pfx_kthread+0x10/0x10
[ 299.604443][ T5945] ret_from_fork+0x23c/0x4b0
[ 299.604461][ T5945] ? __pfx_kthread+0x10/0x10
[ 299.604479][ T5945] ret_from_fork_asm+0x1a/0x30
[ 299.604514][ T5945]
[ 299.604521][ T5945] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 299.648546][ T7926] CPU: 0 UID: 0 PID: 7926 Comm: syz.4.233 Not tainted syzkaller #0 PREEMPT(full)
[ 299.648572][ T7926] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 299.648583][ T7926] Call Trace:
[ 299.648588][ T7926]
[ 299.648594][ T7926] dump_stack_lvl+0x97/0xe0
[ 299.648623][ T7926] sysfs_warn_dup.cold+0x1c/0x28
[ 299.648659][ T7926] sysfs_create_dir_ns+0x129/0x140
[ 299.648681][ T7926] kobject_add_internal+0x104/0x310
[ 299.648712][ T7926] kobject_init_and_add+0xb2/0xf0
[ 299.648729][ T7926] ? alloc_workqueue_noprof+0xe0/0xb60
[ 299.648750][ T7926] gfs2_sys_fs_add+0xef/0x200
[ 299.648777][ T7926] gfs2_fill_super+0x896/0x1210
[ 299.648794][ T7926] ? sb_set_blocksize+0x8c/0x150
[ 299.648821][ T7926] ? setup_bdev_super+0x19d/0x330
[ 299.648847][ T7926] ? __pfx_gfs2_fill_super+0x10/0x10
[ 299.648863][ T7926] get_tree_bdev_flags+0x1c0/0x290
[ 299.648893][ T7926] gfs2_get_tree+0x26/0xd0
[ 299.648920][ T7926] vfs_get_tree+0x30/0x120
[ 299.648943][ T7926] path_mount+0x5a9/0x1360
[ 299.648967][ T7926] __x64_sys_mount+0x1a3/0x1e0
[ 299.648989][ T7926] do_syscall_64+0xe2/0xf80
[ 299.649013][ T7926] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 299.649032][ T7926] RIP: 0033:0x7f82cdb9c10a
[ 299.649052][ T7926] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 299.649072][ T7926] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 299.649090][ T7926] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 299.649103][ T7926] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 299.649115][ T7926] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 299.649126][ T7926] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 299.649138][ T7926] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 299.649152][ T7926]
[ 299.649163][ T7926] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 299.706228][ T7934] loop1: detected capacity change from 0 to 32768
[ 299.781589][ T7929] loop6: detected capacity change from 0 to 32768
[ 299.791951][ T7926] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 299.957395][ T7932] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 299.965331][ T7934] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 299.981187][ T7932] CPU: 0 UID: 0 PID: 7932 Comm: syz.3.234 Not tainted syzkaller #0 PREEMPT(full)
[ 299.981215][ T7932] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 299.981228][ T7932] Call Trace:
[ 299.981234][ T7932]
[ 299.981240][ T7932] dump_stack_lvl+0x97/0xe0
[ 299.981271][ T7932] sysfs_warn_dup.cold+0x1c/0x28
[ 299.981302][ T7932] sysfs_create_dir_ns+0x129/0x140
[ 299.981327][ T7932] kobject_add_internal+0x104/0x310
[ 299.981362][ T7932] kobject_init_and_add+0xb2/0xf0
[ 299.981380][ T7932] ? alloc_workqueue_noprof+0xe0/0xb60
[ 299.981403][ T7932] gfs2_sys_fs_add+0xef/0x200
[ 299.981433][ T7932] gfs2_fill_super+0x896/0x1210
[ 299.981453][ T7932] ? sb_set_blocksize+0x8c/0x150
[ 299.981484][ T7932] ? setup_bdev_super+0x19d/0x330
[ 299.981513][ T7932] ? __pfx_gfs2_fill_super+0x10/0x10
[ 299.981532][ T7932] get_tree_bdev_flags+0x1c0/0x290
[ 299.981565][ T7932] gfs2_get_tree+0x26/0xd0
[ 299.981605][ T7932] vfs_get_tree+0x30/0x120
[ 299.981632][ T7932] path_mount+0x5a9/0x1360
[ 299.981658][ T7932] __x64_sys_mount+0x1a3/0x1e0
[ 299.981683][ T7932] do_syscall_64+0xe2/0xf80
[ 299.981709][ T7932] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 299.981731][ T7932] RIP: 0033:0x7f11c2f9c10a
[ 299.981746][ T7932] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 299.981766][ T7932] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 299.981785][ T7932] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 299.981798][ T7932] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 299.981812][ T7932] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 299.981825][ T7932] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 299.981838][ T7932] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 299.981854][ T7932]
[ 299.981865][ T7932] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 300.014175][ T7929] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 300.017039][ T7932] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 300.023926][ T7934] CPU: 1 UID: 0 PID: 7934 Comm: syz.1.235 Not tainted syzkaller #0 PREEMPT(full)
[ 300.023950][ T7934] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 300.023961][ T7934] Call Trace:
[ 300.023966][ T7934]
[ 300.023972][ T7934] dump_stack_lvl+0x97/0xe0
[ 300.024001][ T7934] sysfs_warn_dup.cold+0x1c/0x28
[ 300.024028][ T7934] sysfs_create_dir_ns+0x129/0x140
[ 300.024051][ T7934] kobject_add_internal+0x104/0x310
[ 300.024083][ T7934] kobject_init_and_add+0xb2/0xf0
[ 300.024101][ T7934] ? alloc_workqueue_noprof+0xe0/0xb60
[ 300.024123][ T7934] gfs2_sys_fs_add+0xef/0x200
[ 300.024150][ T7934] gfs2_fill_super+0x896/0x1210
[ 300.024168][ T7934] ? sb_set_blocksize+0x8c/0x150
[ 300.024195][ T7934] ? setup_bdev_super+0x19d/0x330
[ 300.024222][ T7934] ? __pfx_gfs2_fill_super+0x10/0x10
[ 300.024239][ T7934] get_tree_bdev_flags+0x1c0/0x290
[ 300.024269][ T7934] gfs2_get_tree+0x26/0xd0
[ 300.024297][ T7934] vfs_get_tree+0x30/0x120
[ 300.024330][ T7934] path_mount+0x5a9/0x1360
[ 300.024353][ T7934] __x64_sys_mount+0x1a3/0x1e0
[ 300.024376][ T7934] do_syscall_64+0xe2/0xf80
[ 300.024400][ T7934] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 300.024420][ T7934] RIP: 0033:0x7fd54fd9c10a
[ 300.024434][ T7934] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 300.024452][ T7934] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 300.024470][ T7934] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 300.024483][ T7934] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 300.024494][ T7934] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 300.024506][ T7934] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 300.024518][ T7934] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 300.024532][ T7934]
[ 300.024543][ T7934] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 300.042583][ T7929] CPU: 0 UID: 0 PID: 7929 Comm: syz.6.232 Not tainted syzkaller #0 PREEMPT(full)
[ 300.042618][ T7929] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 300.042630][ T7929] Call Trace:
[ 300.042635][ T7929]
[ 300.042641][ T7929] dump_stack_lvl+0x97/0xe0
[ 300.042671][ T7929] sysfs_warn_dup.cold+0x1c/0x28
[ 300.042699][ T7929] sysfs_create_dir_ns+0x129/0x140
[ 300.042721][ T7929] kobject_add_internal+0x104/0x310
[ 300.042752][ T7929] kobject_init_and_add+0xb2/0xf0
[ 300.042769][ T7929] ? alloc_workqueue_noprof+0xe0/0xb60
[ 300.042789][ T7929] gfs2_sys_fs_add+0xef/0x200
[ 300.042817][ T7929] gfs2_fill_super+0x896/0x1210
[ 300.042835][ T7929] ? sb_set_blocksize+0x8c/0x150
[ 300.042862][ T7929] ? setup_bdev_super+0x19d/0x330
[ 300.042888][ T7929] ? __pfx_gfs2_fill_super+0x10/0x10
[ 300.042905][ T7929] get_tree_bdev_flags+0x1c0/0x290
[ 300.042934][ T7929] gfs2_get_tree+0x26/0xd0
[ 300.042962][ T7929] vfs_get_tree+0x30/0x120
[ 300.042985][ T7929] path_mount+0x5a9/0x1360
[ 300.043008][ T7929] __x64_sys_mount+0x1a3/0x1e0
[ 300.043031][ T7929] do_syscall_64+0xe2/0xf80
[ 300.043054][ T7929] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 300.043073][ T7929] RIP: 0033:0x7f1d0699c10a
[ 300.043088][ T7929] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 300.043106][ T7929] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 300.043125][ T7929] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 300.043137][ T7929] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 300.043149][ T7929] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 300.043160][ T7929] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 300.043172][ T7929] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 300.043186][ T7929]
[ 300.043196][ T7929] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 300.047565][ T7934] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 300.091491][ T7929] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 300.431097][ T7940] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 300.476577][ T7939] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 300.477245][ T7940] CPU: 1 UID: 0 PID: 7940 Comm: syz.5.238 Not tainted syzkaller #0 PREEMPT(full)
[ 300.477268][ T7940] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 300.477280][ T7940] Call Trace:
[ 300.477285][ T7940]
[ 300.477291][ T7940] dump_stack_lvl+0x97/0xe0
[ 300.477320][ T7940] sysfs_warn_dup.cold+0x1c/0x28
[ 300.477356][ T7940] sysfs_create_dir_ns+0x129/0x140
[ 300.477379][ T7940] kobject_add_internal+0x104/0x310
[ 300.477410][ T7940] kobject_init_and_add+0xb2/0xf0
[ 300.477428][ T7940] ? alloc_workqueue_noprof+0xe0/0xb60
[ 300.477449][ T7940] gfs2_sys_fs_add+0xef/0x200
[ 300.477476][ T7940] gfs2_fill_super+0x896/0x1210
[ 300.477494][ T7940] ? sb_set_blocksize+0x8c/0x150
[ 300.477522][ T7940] ? setup_bdev_super+0x19d/0x330
[ 300.477548][ T7940] ? __pfx_gfs2_fill_super+0x10/0x10
[ 300.477565][ T7940] get_tree_bdev_flags+0x1c0/0x290
[ 300.477596][ T7940] gfs2_get_tree+0x26/0xd0
[ 300.477624][ T7940] vfs_get_tree+0x30/0x120
[ 300.477647][ T7940] path_mount+0x5a9/0x1360
[ 300.477671][ T7940] __x64_sys_mount+0x1a3/0x1e0
[ 300.477694][ T7940] do_syscall_64+0xe2/0xf80
[ 300.477718][ T7940] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 300.477738][ T7940] RIP: 0033:0x7fc36c39c10a
[ 300.477752][ T7940] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 300.477771][ T7940] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 300.477789][ T7940] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 300.477802][ T7940] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 300.477814][ T7940] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 300.477826][ T7940] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 300.477837][ T7940] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 300.477852][ T7940]
[ 300.477860][ T7940] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 300.497303][ T7939] CPU: 0 UID: 0 PID: 7939 Comm: syz.0.237 Not tainted syzkaller #0 PREEMPT(full)
[ 300.497328][ T7939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 300.497339][ T7939] Call Trace:
[ 300.497344][ T7939]
[ 300.497350][ T7939] dump_stack_lvl+0x97/0xe0
[ 300.497379][ T7939] sysfs_warn_dup.cold+0x1c/0x28
[ 300.497408][ T7939] sysfs_create_dir_ns+0x129/0x140
[ 300.497430][ T7939] kobject_add_internal+0x104/0x310
[ 300.497462][ T7939] kobject_init_and_add+0xb2/0xf0
[ 300.497479][ T7939] ? alloc_workqueue_noprof+0xe0/0xb60
[ 300.497500][ T7939] gfs2_sys_fs_add+0xef/0x200
[ 300.497527][ T7939] gfs2_fill_super+0x896/0x1210
[ 300.497545][ T7939] ? sb_set_blocksize+0x8c/0x150
[ 300.497573][ T7939] ? setup_bdev_super+0x19d/0x330
[ 300.497607][ T7939] ? __pfx_gfs2_fill_super+0x10/0x10
[ 300.497624][ T7939] get_tree_bdev_flags+0x1c0/0x290
[ 300.497654][ T7939] gfs2_get_tree+0x26/0xd0
[ 300.497681][ T7939] vfs_get_tree+0x30/0x120
[ 300.497705][ T7939] path_mount+0x5a9/0x1360
[ 300.497728][ T7939] __x64_sys_mount+0x1a3/0x1e0
[ 300.497750][ T7939] do_syscall_64+0xe2/0xf80
[ 300.497773][ T7939] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 300.497793][ T7939] RIP: 0033:0x7f1c46b9c10a
[ 300.497807][ T7939] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
[ 300.497825][ T7939] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 300.497843][ T7939] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 300.497855][ T7939] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 300.497866][ T7939] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 300.497877][ T7939] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 300.497888][ T7939] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 300.497903][ T7939]
[ 300.497913][ T7939] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 300.570164][ T7940] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 300.578105][ T7939] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 304.840509][ T6428] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 566
[ 304.854920][ T6428] CPU: 0 UID: 0 PID: 6428 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 304.854944][ T6428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 304.854953][ T6428] Call Trace:
[ 304.854957][ T6428]
[ 304.854962][ T6428] dump_stack_lvl+0x97/0xe0
[ 304.854985][ T6428] gfs2_assert_warn_i.cold+0x38/0x94
[ 304.855001][ T6428] gfs2_make_fs_ro+0x13d/0x220
[ 304.855017][ T6428] ? __pfx_autoremove_wake_function+0x10/0x10
[ 304.855039][ T6428] gfs2_put_super+0xb4/0x2d0
[ 304.855054][ T6428] ? __pfx_gfs2_put_super+0x10/0x10
[ 304.855069][ T6428] generic_shutdown_super+0xa4/0x160
[ 304.855090][ T6428] kill_block_super+0x1d/0x50
[ 304.855110][ T6428] gfs2_kill_sb+0x1b6/0x1e0
[ 304.855132][ T6428] deactivate_locked_super+0x4f/0x120
[ 304.855154][ T6428] deactivate_super+0xa4/0xc0
[ 304.855175][ T6428] cleanup_mnt+0x145/0x1f0
[ 304.855199][ T6428] task_work_run+0x95/0xf0
[ 304.855217][ T6428] exit_to_user_mode_loop+0xcf/0x440
[ 304.855233][ T6428] do_syscall_64+0x407/0xf80
[ 304.855252][ T6428] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 304.855267][ T6428] RIP: 0033:0x7fe647b9c0d7
[ 304.855278][ T6428] 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
[ 304.855292][ T6428] RSP: 002b:00007fff7e69e3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 304.855307][ T6428] RAX: 0000000000000000 RBX: 00007fe647c2d33b RCX: 00007fe647b9c0d7
[ 304.855315][ T6428] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff7e69e490
[ 304.855323][ T6428] RBP: 00007fff7e69e490 R08: 00007fff7e69f490 R09: 00000000ffffffff
[ 304.855332][ T6428] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7e69f520
[ 304.855340][ T6428] R13: 00007fe647c2d33b R14: 000000000004913b R15: 00007fff7e69f560
[ 304.855351][ T6428]
[ 305.128316][ T7953] set_capacity_and_notify: 3 callbacks suppressed
[ 305.128328][ T7953] loop2: detected capacity change from 0 to 32768
[ 305.144716][ T7953] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 305.153006][ T7953] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 305.163783][ T7953] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 305.172995][ T5831] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 305.180027][ T5831] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 305.195885][ T5831] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 15ms
[ 305.203491][ T5831] gfs2: fsid=syz:syz.0: jid=0: Done
[ 305.208723][ T7953] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 305.284920][ T6856] 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
[ 305.300365][ T5831] 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
[ 305.315992][ T6856] CPU: 1 UID: 0 PID: 6856 Comm: kworker/1:7 Not tainted syzkaller #0 PREEMPT(full)
[ 305.316020][ T6856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 305.316034][ T6856] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 305.316070][ T6856] Call Trace:
[ 305.316076][ T6856]
[ 305.316083][ T6856] dump_stack_lvl+0x97/0xe0
[ 305.316113][ T6856] gfs2_meta_check_ii.cold+0xa/0x77
[ 305.316137][ T6856] gfs2_meta_buffer+0x1a2/0x1b0
[ 305.316164][ T6856] inode_go_instantiate+0x61/0x560
[ 305.316198][ T6856] gfs2_instantiate+0xa7/0x130
[ 305.316261][ T6856] gfs2_inode_lookup+0x49a/0x520
[ 305.316283][ T6856] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 305.316305][ T6856] gfs2_lookup_by_inum+0x2f/0xb0
[ 305.316326][ T6856] delete_work_func+0xa3/0x2d0
[ 305.316355][ T6856] ? wg_peer_put+0x8c/0xc0
[ 305.316378][ T6856] process_one_work+0x277/0x5f0
[ 305.316404][ T6856] worker_thread+0x255/0x4a0
[ 305.316431][ T6856] ? __pfx_worker_thread+0x10/0x10
[ 305.316458][ T6856] kthread+0x14e/0x1a0
[ 305.316474][ T6856] ? __pfx_kthread+0x10/0x10
[ 305.316492][ T6856] ret_from_fork+0x23c/0x4b0
[ 305.316510][ T6856] ? __pfx_kthread+0x10/0x10
[ 305.316527][ T6856] ret_from_fork_asm+0x1a/0x30
[ 305.316562][ T6856]
[ 305.316568][ T6856] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 310.511582][ T5831] gfs2: fsid=syz:syz.0: file system withdrawn
[ 311.000922][ T1308] ieee802154 phy0 wpan0: encryption failed: -22
[ 311.007699][ T1308] ieee802154 phy1 wpan1: encryption failed: -22
2026/04/10 12:29:13 executed programs: 236
[ 313.466688][ T7972] loop0: detected capacity change from 0 to 32768
[ 313.502689][ T7972] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 313.523222][ T7973] loop3: detected capacity change from 0 to 32768
[ 313.537449][ T7972] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 313.546208][ T7968] loop4: detected capacity change from 0 to 32768
[ 313.548647][ T7972] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 313.560925][ T5909] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 313.568143][ T7969] loop6: detected capacity change from 0 to 32768
[ 313.568259][ T5909] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 313.584813][ T7973] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 313.592744][ T7973] CPU: 1 UID: 0 PID: 7973 Comm: syz.3.242 Not tainted syzkaller #0 PREEMPT(full)
[ 313.592771][ T7973] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 313.592784][ T7973] Call Trace:
[ 313.592789][ T7973]
[ 313.592796][ T7973] dump_stack_lvl+0x97/0xe0
[ 313.592828][ T7973] sysfs_warn_dup.cold+0x1c/0x28
[ 313.592860][ T7973] sysfs_create_dir_ns+0x129/0x140
[ 313.592886][ T7973] kobject_add_internal+0x104/0x310
[ 313.592922][ T7973] kobject_init_and_add+0xb2/0xf0
[ 313.592942][ T7973] ? alloc_workqueue_noprof+0xe0/0xb60
[ 313.592965][ T7973] gfs2_sys_fs_add+0xef/0x200
[ 313.592996][ T7973] gfs2_fill_super+0x896/0x1210
[ 313.593016][ T7973] ? sb_set_blocksize+0x8c/0x150
[ 313.593048][ T7973] ? setup_bdev_super+0x19d/0x330
[ 313.593078][ T7973] ? __pfx_gfs2_fill_super+0x10/0x10
[ 313.593106][ T7973] get_tree_bdev_flags+0x1c0/0x290
[ 313.593141][ T7973] gfs2_get_tree+0x26/0xd0
[ 313.593173][ T7973] vfs_get_tree+0x30/0x120
[ 313.593201][ T7973] path_mount+0x5a9/0x1360
[ 313.593227][ T7973] __x64_sys_mount+0x1a3/0x1e0
[ 313.593253][ T7973] do_syscall_64+0xe2/0xf80
[ 313.593279][ T7973] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 313.593301][ T7973] RIP: 0033:0x7f11c2f9c10a
[ 313.593316][ T7973] 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
[ 313.593337][ T7973] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 313.593356][ T7973] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 313.593370][ T7973] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 313.593383][ T7973] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 313.593396][ T7973] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 313.593410][ T7973] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 313.593426][ T7973]
[ 313.593436][ T7973] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 313.593943][ T5909] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 25ms
[ 313.661199][ T7968] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 313.664273][ T5909] gfs2: fsid=syz:syz.0: jid=0: Done
[ 313.680182][ T7973] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 313.750450][ T7972] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 313.757432][ T7968] CPU: 1 UID: 0 PID: 7968 Comm: syz.4.243 Not tainted syzkaller #0 PREEMPT(full)
[ 313.757457][ T7968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 313.757468][ T7968] Call Trace:
[ 313.757474][ T7968]
[ 313.757481][ T7968] dump_stack_lvl+0x97/0xe0
[ 313.757510][ T7968] sysfs_warn_dup.cold+0x1c/0x28
[ 313.757538][ T7968] sysfs_create_dir_ns+0x129/0x140
[ 313.757561][ T7968] kobject_add_internal+0x104/0x310
[ 313.757592][ T7968] kobject_init_and_add+0xb2/0xf0
[ 313.757609][ T7968] ? alloc_workqueue_noprof+0xe0/0xb60
[ 313.757629][ T7968] gfs2_sys_fs_add+0xef/0x200
[ 313.757656][ T7968] gfs2_fill_super+0x896/0x1210
[ 313.757673][ T7968] ? sb_set_blocksize+0x8c/0x150
[ 313.757699][ T7968] ? setup_bdev_super+0x19d/0x330
[ 313.757725][ T7968] ? __pfx_gfs2_fill_super+0x10/0x10
[ 313.757741][ T7968] get_tree_bdev_flags+0x1c0/0x290
[ 313.757770][ T7968] gfs2_get_tree+0x26/0xd0
[ 313.757797][ T7968] vfs_get_tree+0x30/0x120
[ 313.757821][ T7968] path_mount+0x5a9/0x1360
[ 313.757843][ T7968] __x64_sys_mount+0x1a3/0x1e0
[ 313.757865][ T7968] do_syscall_64+0xe2/0xf80
[ 313.757889][ T7968] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 313.757908][ T7968] RIP: 0033:0x7f82cdb9c10a
[ 313.757922][ T7968] 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
[ 313.757941][ T7968] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 313.757958][ T7968] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 313.757971][ T7968] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 313.757983][ T7968] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 313.757994][ T7968] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 313.758006][ T7968] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 313.758020][ T7968]
[ 313.758030][ T7968] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 313.797194][ T7967] loop5: detected capacity change from 0 to 32768
[ 313.807577][ T7968] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 313.813945][ T7969] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 313.842141][ T7963] loop1: detected capacity change from 0 to 32768
[ 313.861775][ T7974] loop2: detected capacity change from 0 to 32768
[ 313.885409][ T7969] CPU: 1 UID: 0 PID: 7969 Comm: syz.6.245 Not tainted syzkaller #0 PREEMPT(full)
[ 313.885433][ T7969] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 313.885445][ T7969] Call Trace:
[ 313.885451][ T7969]
[ 313.885462][ T7969] dump_stack_lvl+0x97/0xe0
[ 313.885492][ T7969] sysfs_warn_dup.cold+0x1c/0x28
[ 313.885520][ T7969] sysfs_create_dir_ns+0x129/0x140
[ 313.885543][ T7969] kobject_add_internal+0x104/0x310
[ 313.885574][ T7969] kobject_init_and_add+0xb2/0xf0
[ 313.885592][ T7969] ? alloc_workqueue_noprof+0xe0/0xb60
[ 313.885613][ T7969] gfs2_sys_fs_add+0xef/0x200
[ 313.885640][ T7969] gfs2_fill_super+0x896/0x1210
[ 313.885658][ T7969] ? sb_set_blocksize+0x8c/0x150
[ 313.885686][ T7969] ? setup_bdev_super+0x19d/0x330
[ 313.885711][ T7969] ? __pfx_gfs2_fill_super+0x10/0x10
[ 313.885728][ T7969] get_tree_bdev_flags+0x1c0/0x290
[ 313.885758][ T7969] gfs2_get_tree+0x26/0xd0
[ 313.885786][ T7969] vfs_get_tree+0x30/0x120
[ 313.885810][ T7969] path_mount+0x5a9/0x1360
[ 313.885834][ T7969] __x64_sys_mount+0x1a3/0x1e0
[ 313.885857][ T7969] do_syscall_64+0xe2/0xf80
[ 313.885881][ T7969] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 313.885900][ T7969] RIP: 0033:0x7f1d0699c10a
[ 313.885915][ T7969] 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
[ 313.885934][ T7969] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 313.885953][ T7969] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 313.885965][ T7969] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 313.885978][ T7969] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 313.885990][ T7969] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 313.886002][ T7969] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 313.886016][ T7969]
[ 313.886035][ T7969] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 313.993330][ T2776] 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
[ 313.997703][ T7969] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 314.004878][ T2776] CPU: 0 UID: 0 PID: 2776 Comm: kworker/0:1H Not tainted syzkaller #0 PREEMPT(full)
[ 314.004903][ T2776] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 314.004915][ T2776] Workqueue: gfs2-glock/syz:syz glock_work_func
[ 314.004947][ T2776] Call Trace:
[ 314.004953][ T2776]
[ 314.004959][ T2776] dump_stack_lvl+0x97/0xe0
[ 314.004985][ T2776] gfs2_withdraw.cold+0xa/0x77
[ 314.005005][ T2776] gfs2_assert_withdraw_i.cold+0x2c/0x36
[ 314.005025][ T2776] ? __pfx_inode_go_inval+0x10/0x10
[ 314.005054][ T2776] inode_go_inval+0x1df/0x1f0
[ 314.005082][ T2776] do_xmote+0x12a/0x310
[ 314.005107][ T2776] run_queue+0x288/0x300
[ 314.005132][ T2776] glock_work_func+0xac/0x280
[ 314.005158][ T2776] process_one_work+0x277/0x5f0
[ 314.005184][ T2776] worker_thread+0x255/0x4a0
[ 314.005208][ T2776] ? __pfx_worker_thread+0x10/0x10
[ 314.005233][ T2776] kthread+0x14e/0x1a0
[ 314.005249][ T2776] ? __pfx_kthread+0x10/0x10
[ 314.005265][ T2776] ret_from_fork+0x23c/0x4b0
[ 314.005282][ T2776] ? __pfx_kthread+0x10/0x10
[ 314.005298][ T2776] ret_from_fork_asm+0x1a/0x30
[ 314.005328][ T2776]
[ 314.005336][ T2776] CPU: 0 UID: 0 PID: 2776 Comm: kworker/0:1H Not tainted syzkaller #0 PREEMPT(full)
[ 314.005358][ T2776] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 314.005369][ T2776] Workqueue: gfs2-glock/syz:syz glock_work_func
[ 314.005395][ T2776] Call Trace:
[ 314.005400][ T2776]
[ 314.005406][ T2776] dump_stack_lvl+0x97/0xe0
[ 314.005437][ T2776] gfs2_assert_withdraw_i.cold+0x31/0x36
[ 314.005457][ T2776] ? __pfx_inode_go_inval+0x10/0x10
[ 314.005485][ T2776] inode_go_inval+0x1df/0x1f0
[ 314.005512][ T2776] do_xmote+0x12a/0x310
[ 314.005537][ T2776] run_queue+0x288/0x300
[ 314.005562][ T2776] glock_work_func+0xac/0x280
[ 314.005587][ T2776] process_one_work+0x277/0x5f0
[ 314.005612][ T2776] worker_thread+0x255/0x4a0
[ 314.005635][ T2776] ? __pfx_worker_thread+0x10/0x10
[ 314.005659][ T2776] kthread+0x14e/0x1a0
[ 314.005673][ T2776] ? __pfx_kthread+0x10/0x10
[ 314.005689][ T2776] ret_from_fork+0x23c/0x4b0
[ 314.005704][ T2776] ? __pfx_kthread+0x10/0x10
[ 314.005720][ T2776] ret_from_fork_asm+0x1a/0x30
[ 314.005750][ T2776]
[ 314.063071][ T7967] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 314.093067][ T7972] gfs2: fsid=syz:syz.0: can't lock the freeze glock: -5
[ 314.110185][ T7967] CPU: 0 UID: 0 PID: 7967 Comm: syz.5.244 Not tainted syzkaller #0 PREEMPT(full)
[ 314.110211][ T7967] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 314.110223][ T7967] Call Trace:
[ 314.110229][ T7967]
[ 314.110237][ T7967] dump_stack_lvl+0x97/0xe0
[ 314.110266][ T7967] sysfs_warn_dup.cold+0x1c/0x28
[ 314.110295][ T7967] sysfs_create_dir_ns+0x129/0x140
[ 314.110317][ T7967] kobject_add_internal+0x104/0x310
[ 314.110348][ T7967] kobject_init_and_add+0xb2/0xf0
[ 314.110366][ T7967] ? alloc_workqueue_noprof+0xe0/0xb60
[ 314.110387][ T7967] gfs2_sys_fs_add+0xef/0x200
[ 314.110414][ T7967] gfs2_fill_super+0x896/0x1210
[ 314.110441][ T7967] ? sb_set_blocksize+0x8c/0x150
[ 314.110468][ T7967] ? setup_bdev_super+0x19d/0x330
[ 314.110494][ T7967] ? __pfx_gfs2_fill_super+0x10/0x10
[ 314.110511][ T7967] get_tree_bdev_flags+0x1c0/0x290
[ 314.110540][ T7967] gfs2_get_tree+0x26/0xd0
[ 314.110568][ T7967] vfs_get_tree+0x30/0x120
[ 314.110591][ T7967] path_mount+0x5a9/0x1360
[ 314.110614][ T7967] __x64_sys_mount+0x1a3/0x1e0
[ 314.110636][ T7967] do_syscall_64+0xe2/0xf80
[ 314.110659][ T7967] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 314.110679][ T7967] RIP: 0033:0x7fc36c39c10a
[ 314.110694][ T7967] 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
[ 314.110712][ T7967] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 314.110730][ T7967] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 314.110743][ T7967] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 314.110754][ T7967] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 314.110766][ T7967] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 314.110777][ T7967] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 314.110792][ T7967]
[ 314.110803][ T7967] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 314.210273][ T7974] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 314.221816][ T7967] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 314.227479][ T7974] CPU: 1 UID: 0 PID: 7974 Comm: syz.2.241 Not tainted syzkaller #0 PREEMPT(full)
[ 314.227503][ T7974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 314.227514][ T7974] Call Trace:
[ 314.227520][ T7974]
[ 314.227526][ T7974] dump_stack_lvl+0x97/0xe0
[ 314.227554][ T7974] sysfs_warn_dup.cold+0x1c/0x28
[ 314.227583][ T7974] sysfs_create_dir_ns+0x129/0x140
[ 314.227606][ T7974] kobject_add_internal+0x104/0x310
[ 314.227637][ T7974] kobject_init_and_add+0xb2/0xf0
[ 314.227655][ T7974] ? alloc_workqueue_noprof+0xe0/0xb60
[ 314.227676][ T7974] gfs2_sys_fs_add+0xef/0x200
[ 314.227704][ T7974] gfs2_fill_super+0x896/0x1210
[ 314.227722][ T7974] ? sb_set_blocksize+0x8c/0x150
[ 314.227749][ T7974] ? setup_bdev_super+0x19d/0x330
[ 314.227776][ T7974] ? __pfx_gfs2_fill_super+0x10/0x10
[ 314.227793][ T7974] get_tree_bdev_flags+0x1c0/0x290
[ 314.227823][ T7974] gfs2_get_tree+0x26/0xd0
[ 314.227851][ T7974] vfs_get_tree+0x30/0x120
[ 314.227875][ T7974] path_mount+0x5a9/0x1360
[ 314.227898][ T7974] __x64_sys_mount+0x1a3/0x1e0
[ 314.227921][ T7974] do_syscall_64+0xe2/0xf80
[ 314.227945][ T7974] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 314.227965][ T7974] RIP: 0033:0x7fe647b9c10a
[ 314.227980][ T7974] 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
[ 314.227999][ T7974] RSP: 002b:00007fe648a24e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 314.228016][ T7974] RAX: ffffffffffffffda RBX: 00007fe648a24ee0 RCX: 00007fe647b9c10a
[ 314.228029][ T7974] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fe648a24ea0
[ 314.228041][ T7974] RBP: 0000200000037f40 R08: 00007fe648a24ee0 R09: 0000000000000000
[ 314.228052][ T7974] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 314.228063][ T7974] R13: 00007fe648a24ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 314.228078][ T7974]
[ 314.228089][ T7974] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 314.252655][ T7991] loop3: detected capacity change from 0 to 32768
[ 314.259589][ T7974] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 314.310265][ T7963] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 314.400548][ T7991] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 314.408725][ T7963] CPU: 0 UID: 0 PID: 7963 Comm: syz.1.240 Not tainted syzkaller #0 PREEMPT(full)
[ 314.408750][ T7963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 314.408761][ T7963] Call Trace:
[ 314.408766][ T7963]
[ 314.408772][ T7963] dump_stack_lvl+0x97/0xe0
[ 314.408801][ T7963] sysfs_warn_dup.cold+0x1c/0x28
[ 314.408828][ T7963] sysfs_create_dir_ns+0x129/0x140
[ 314.408851][ T7963] kobject_add_internal+0x104/0x310
[ 314.408882][ T7963] kobject_init_and_add+0xb2/0xf0
[ 314.408899][ T7963] ? alloc_workqueue_noprof+0xe0/0xb60
[ 314.408920][ T7963] gfs2_sys_fs_add+0xef/0x200
[ 314.408946][ T7963] gfs2_fill_super+0x896/0x1210
[ 314.408963][ T7963] ? sb_set_blocksize+0x8c/0x150
[ 314.408991][ T7963] ? setup_bdev_super+0x19d/0x330
[ 314.409016][ T7963] ? __pfx_gfs2_fill_super+0x10/0x10
[ 314.409033][ T7963] get_tree_bdev_flags+0x1c0/0x290
[ 314.409069][ T7963] gfs2_get_tree+0x26/0xd0
[ 314.409096][ T7963] vfs_get_tree+0x30/0x120
[ 314.409119][ T7963] path_mount+0x5a9/0x1360
[ 314.409142][ T7963] __x64_sys_mount+0x1a3/0x1e0
[ 314.409164][ T7963] do_syscall_64+0xe2/0xf80
[ 314.409195][ T7963] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 314.409215][ T7963] RIP: 0033:0x7fd54fd9c10a
[ 314.409229][ T7963] 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
[ 314.409248][ T7963] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 314.409266][ T7963] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 314.409279][ T7963] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 314.409291][ T7963] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 314.409303][ T7963] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 314.409315][ T7963] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 314.409330][ T7963]
[ 314.409340][ T7963] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 314.620687][ T7991] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 314.692792][ T7963] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 315.145517][ T7991] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 315.212323][ T23] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 315.219122][ T23] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 315.252640][ T8000] loop5: detected capacity change from 0 to 32768
[ 315.292942][ T23] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 73ms
[ 315.308136][ T8000] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 315.320486][ T23] gfs2: fsid=syz:syz.0: jid=0: Done
[ 315.325765][ T8000] CPU: 0 UID: 0 PID: 8000 Comm: syz.5.249 Not tainted syzkaller #0 PREEMPT(full)
[ 315.325789][ T8000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 315.325800][ T8000] Call Trace:
[ 315.325806][ T8000]
[ 315.325812][ T8000] dump_stack_lvl+0x97/0xe0
[ 315.325843][ T8000] sysfs_warn_dup.cold+0x1c/0x28
[ 315.325873][ T8000] sysfs_create_dir_ns+0x129/0x140
[ 315.325898][ T8000] kobject_add_internal+0x104/0x310
[ 315.325932][ T8000] kobject_init_and_add+0xb2/0xf0
[ 315.325951][ T8000] ? alloc_workqueue_noprof+0xe0/0xb60
[ 315.325973][ T8000] gfs2_sys_fs_add+0xef/0x200
[ 315.326004][ T8000] gfs2_fill_super+0x896/0x1210
[ 315.326023][ T8000] ? sb_set_blocksize+0x8c/0x150
[ 315.326054][ T8000] ? setup_bdev_super+0x19d/0x330
[ 315.326084][ T8000] ? __pfx_gfs2_fill_super+0x10/0x10
[ 315.326102][ T8000] get_tree_bdev_flags+0x1c0/0x290
[ 315.326138][ T8000] gfs2_get_tree+0x26/0xd0
[ 315.326170][ T8000] vfs_get_tree+0x30/0x120
[ 315.326196][ T8000] path_mount+0x5a9/0x1360
[ 315.326223][ T8000] __x64_sys_mount+0x1a3/0x1e0
[ 315.326248][ T8000] do_syscall_64+0xe2/0xf80
[ 315.326274][ T8000] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 315.326296][ T8000] RIP: 0033:0x7fc36c39c10a
[ 315.326311][ T8000] 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
[ 315.326331][ T8000] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 315.326350][ T8000] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 315.326364][ T8000] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 315.326377][ T8000] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 315.326390][ T8000] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 315.326402][ T8000] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 315.326418][ T8000]
[ 315.326429][ T8000] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 315.340156][ T7991] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 315.373592][ T8003] loop4: detected capacity change from 0 to 32768
[ 315.383712][ T8000] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 315.559482][ T8008] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 315.587084][ T8008] CPU: 0 UID: 0 PID: 8008 Comm: syz.0.251 Not tainted syzkaller #0 PREEMPT(full)
[ 315.587111][ T8008] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 315.587124][ T8008] Call Trace:
[ 315.587129][ T8008]
[ 315.587136][ T8008] dump_stack_lvl+0x97/0xe0
[ 315.587166][ T8008] sysfs_warn_dup.cold+0x1c/0x28
[ 315.587196][ T8008] sysfs_create_dir_ns+0x129/0x140
[ 315.587222][ T8008] kobject_add_internal+0x104/0x310
[ 315.587257][ T8008] kobject_init_and_add+0xb2/0xf0
[ 315.587275][ T8008] ? alloc_workqueue_noprof+0xe0/0xb60
[ 315.587298][ T8008] gfs2_sys_fs_add+0xef/0x200
[ 315.587328][ T8008] gfs2_fill_super+0x896/0x1210
[ 315.587348][ T8008] ? sb_set_blocksize+0x8c/0x150
[ 315.587379][ T8008] ? setup_bdev_super+0x19d/0x330
[ 315.587408][ T8008] ? __pfx_gfs2_fill_super+0x10/0x10
[ 315.587427][ T8008] get_tree_bdev_flags+0x1c0/0x290
[ 315.587470][ T8008] gfs2_get_tree+0x26/0xd0
[ 315.587502][ T8008] vfs_get_tree+0x30/0x120
[ 315.587530][ T8008] path_mount+0x5a9/0x1360
[ 315.587556][ T8008] __x64_sys_mount+0x1a3/0x1e0
[ 315.587591][ T8008] do_syscall_64+0xe2/0xf80
[ 315.587617][ T8008] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 315.587638][ T8008] RIP: 0033:0x7f1c46b9c10a
[ 315.587653][ T8008] 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
[ 315.587674][ T8008] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 315.587693][ T8008] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 315.587707][ T8008] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 315.587721][ T8008] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 315.587734][ T8008] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 315.587747][ T8008] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 315.587763][ T8008]
[ 315.587773][ T8008] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 315.794219][ T8003] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 315.797385][ T8008] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 315.826836][ T8003] CPU: 0 UID: 0 PID: 8003 Comm: syz.4.250 Not tainted syzkaller #0 PREEMPT(full)
[ 315.826866][ T8003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 315.826879][ T8003] Call Trace:
[ 315.826885][ T8003]
[ 315.826892][ T8003] dump_stack_lvl+0x97/0xe0
[ 315.826925][ T8003] sysfs_warn_dup.cold+0x1c/0x28
[ 315.826957][ T8003] sysfs_create_dir_ns+0x129/0x140
[ 315.826984][ T8003] kobject_add_internal+0x104/0x310
[ 315.827021][ T8003] kobject_init_and_add+0xb2/0xf0
[ 315.827041][ T8003] ? alloc_workqueue_noprof+0xe0/0xb60
[ 315.827065][ T8003] gfs2_sys_fs_add+0xef/0x200
[ 315.827106][ T8003] gfs2_fill_super+0x896/0x1210
[ 315.827126][ T8003] ? sb_set_blocksize+0x8c/0x150
[ 315.827158][ T8003] ? setup_bdev_super+0x19d/0x330
[ 315.827188][ T8003] ? __pfx_gfs2_fill_super+0x10/0x10
[ 315.827206][ T8003] get_tree_bdev_flags+0x1c0/0x290
[ 315.827242][ T8003] gfs2_get_tree+0x26/0xd0
[ 315.827274][ T8003] vfs_get_tree+0x30/0x120
[ 315.827301][ T8003] path_mount+0x5a9/0x1360
[ 315.827327][ T8003] __x64_sys_mount+0x1a3/0x1e0
[ 315.827354][ T8003] do_syscall_64+0xe2/0xf80
[ 315.827381][ T8003] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 315.827403][ T8003] RIP: 0033:0x7f82cdb9c10a
[ 315.827419][ T8003] 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
[ 315.827440][ T8003] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 315.827459][ T8003] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 315.827473][ T8003] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 315.827486][ T8003] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 315.827499][ T8003] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 315.827512][ T8003] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 315.827528][ T8003]
[ 315.827538][ T8003] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 316.035375][ T8003] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 316.037643][ T8006] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 316.049818][ T8012] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 316.058281][ T8006] CPU: 1 UID: 0 PID: 8006 Comm: syz.2.247 Not tainted syzkaller #0 PREEMPT(full)
[ 316.058308][ T8006] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 316.058320][ T8006] Call Trace:
[ 316.058325][ T8006]
[ 316.058332][ T8006] dump_stack_lvl+0x97/0xe0
[ 316.058363][ T8006] sysfs_warn_dup.cold+0x1c/0x28
[ 316.058394][ T8006] sysfs_create_dir_ns+0x129/0x140
[ 316.058421][ T8006] kobject_add_internal+0x104/0x310
[ 316.058455][ T8006] kobject_init_and_add+0xb2/0xf0
[ 316.058474][ T8006] ? alloc_workqueue_noprof+0xe0/0xb60
[ 316.058497][ T8006] gfs2_sys_fs_add+0xef/0x200
[ 316.058528][ T8006] gfs2_fill_super+0x896/0x1210
[ 316.058549][ T8006] ? sb_set_blocksize+0x8c/0x150
[ 316.058581][ T8006] ? setup_bdev_super+0x19d/0x330
[ 316.058610][ T8006] ? __pfx_gfs2_fill_super+0x10/0x10
[ 316.058630][ T8006] get_tree_bdev_flags+0x1c0/0x290
[ 316.058664][ T8006] gfs2_get_tree+0x26/0xd0
[ 316.058694][ T8006] vfs_get_tree+0x30/0x120
[ 316.058721][ T8006] path_mount+0x5a9/0x1360
[ 316.058747][ T8006] __x64_sys_mount+0x1a3/0x1e0
[ 316.058773][ T8006] do_syscall_64+0xe2/0xf80
[ 316.058800][ T8006] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 316.058821][ T8006] RIP: 0033:0x7fe647b9c10a
[ 316.058837][ T8006] 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
[ 316.058858][ T8006] RSP: 002b:00007fe648a24e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 316.058878][ T8006] RAX: ffffffffffffffda RBX: 00007fe648a24ee0 RCX: 00007fe647b9c10a
[ 316.058892][ T8006] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fe648a24ea0
[ 316.058904][ T8006] RBP: 0000200000037f40 R08: 00007fe648a24ee0 R09: 0000000000000000
[ 316.058918][ T8006] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 316.058929][ T8006] R13: 00007fe648a24ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 316.058946][ T8006]
[ 316.058956][ T8006] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 316.104542][ T8012] CPU: 0 UID: 0 PID: 8012 Comm: syz.1.252 Not tainted syzkaller #0 PREEMPT(full)
[ 316.104566][ T8012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 316.104577][ T8012] Call Trace:
[ 316.104582][ T8012]
[ 316.104589][ T8012] dump_stack_lvl+0x97/0xe0
[ 316.104617][ T8012] sysfs_warn_dup.cold+0x1c/0x28
[ 316.104646][ T8012] sysfs_create_dir_ns+0x129/0x140
[ 316.104668][ T8012] kobject_add_internal+0x104/0x310
[ 316.104698][ T8012] kobject_init_and_add+0xb2/0xf0
[ 316.104717][ T8012] ? alloc_workqueue_noprof+0xe0/0xb60
[ 316.104737][ T8012] gfs2_sys_fs_add+0xef/0x200
[ 316.104764][ T8012] gfs2_fill_super+0x896/0x1210
[ 316.104782][ T8012] ? sb_set_blocksize+0x8c/0x150
[ 316.104809][ T8012] ? setup_bdev_super+0x19d/0x330
[ 316.104835][ T8012] ? __pfx_gfs2_fill_super+0x10/0x10
[ 316.104852][ T8012] get_tree_bdev_flags+0x1c0/0x290
[ 316.104882][ T8012] gfs2_get_tree+0x26/0xd0
[ 316.104909][ T8012] vfs_get_tree+0x30/0x120
[ 316.104933][ T8012] path_mount+0x5a9/0x1360
[ 316.104956][ T8012] __x64_sys_mount+0x1a3/0x1e0
[ 316.104979][ T8012] do_syscall_64+0xe2/0xf80
[ 316.105003][ T8012] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 316.105023][ T8012] RIP: 0033:0x7fd54fd9c10a
[ 316.105038][ T8012] 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
[ 316.105056][ T8012] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 316.105075][ T8012] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 316.105087][ T8012] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 316.105099][ T8012] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 316.105111][ T8012] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 316.105123][ T8012] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 316.105137][ T8012]
[ 316.105147][ T8012] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 316.155193][ T8006] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 316.170363][ T5909] 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
[ 316.180574][ T8012] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 316.200041][ T6713] 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
[ 316.218745][ T8005] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 316.224116][ T5920] 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
[ 316.224148][ T5920] CPU: 0 UID: 0 PID: 5920 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full)
[ 316.224172][ T5920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 316.224185][ T5920] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 316.224217][ T5920] Call Trace:
[ 316.224223][ T5920]
[ 316.224229][ T5920] dump_stack_lvl+0x97/0xe0
[ 316.224256][ T5920] gfs2_meta_check_ii.cold+0xa/0x77
[ 316.224277][ T5920] gfs2_meta_buffer+0x1a2/0x1b0
[ 316.224302][ T5920] inode_go_instantiate+0x61/0x560
[ 316.224332][ T5920] gfs2_instantiate+0xa7/0x130
[ 316.224355][ T5920] gfs2_inode_lookup+0x49a/0x520
[ 316.224375][ T5920] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 316.224395][ T5920] gfs2_lookup_by_inum+0x2f/0xb0
[ 316.224414][ T5920] delete_work_func+0xa3/0x2d0
[ 316.224441][ T5920] ? wg_peer_put+0x8c/0xc0
[ 316.224462][ T5920] process_one_work+0x277/0x5f0
[ 316.224488][ T5920] worker_thread+0x255/0x4a0
[ 316.224512][ T5920] ? __pfx_worker_thread+0x10/0x10
[ 316.224536][ T5920] kthread+0x14e/0x1a0
[ 316.224552][ T5920] ? __pfx_kthread+0x10/0x10
[ 316.224568][ T5920] ret_from_fork+0x23c/0x4b0
[ 316.224584][ T5920] ? __pfx_kthread+0x10/0x10
[ 316.224600][ T5920] ret_from_fork_asm+0x1a/0x30
[ 316.224631][ T5920]
[ 316.224637][ T5920] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 316.234902][ T8005] CPU: 1 UID: 0 PID: 8005 Comm: syz.6.248 Not tainted syzkaller #0 PREEMPT(full)
[ 316.234924][ T8005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 316.234934][ T8005] Call Trace:
[ 316.234940][ T8005]
[ 316.234945][ T8005] dump_stack_lvl+0x97/0xe0
[ 316.234972][ T8005] sysfs_warn_dup.cold+0x1c/0x28
[ 316.235000][ T8005] sysfs_create_dir_ns+0x129/0x140
[ 316.235022][ T8005] kobject_add_internal+0x104/0x310
[ 316.235052][ T8005] kobject_init_and_add+0xb2/0xf0
[ 316.235069][ T8005] ? alloc_workqueue_noprof+0xe0/0xb60
[ 316.235089][ T8005] gfs2_sys_fs_add+0xef/0x200
[ 316.235116][ T8005] gfs2_fill_super+0x896/0x1210
[ 316.235134][ T8005] ? sb_set_blocksize+0x8c/0x150
[ 316.235160][ T8005] ? setup_bdev_super+0x19d/0x330
[ 316.235186][ T8005] ? __pfx_gfs2_fill_super+0x10/0x10
[ 316.235203][ T8005] get_tree_bdev_flags+0x1c0/0x290
[ 316.235232][ T8005] gfs2_get_tree+0x26/0xd0
[ 316.235260][ T8005] vfs_get_tree+0x30/0x120
[ 316.235284][ T8005] path_mount+0x5a9/0x1360
[ 316.235308][ T8005] __x64_sys_mount+0x1a3/0x1e0
[ 316.235330][ T8005] do_syscall_64+0xe2/0xf80
[ 316.235363][ T8005] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 316.235382][ T8005] RIP: 0033:0x7f1d0699c10a
[ 316.235397][ T8005] 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
[ 316.235415][ T8005] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 316.235433][ T8005] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 316.235445][ T8005] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 316.235457][ T8005] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 316.235469][ T8005] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 316.235480][ T8005] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 316.235494][ T8005]
[ 316.235503][ T8005] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 316.875379][ T8005] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 321.311337][ T5920] gfs2: fsid=syz:syz.0: file system withdrawn
2026/04/10 12:29:25 executed programs: 250
[ 325.129438][ T8040] set_capacity_and_notify: 4 callbacks suppressed
[ 325.129452][ T8040] loop2: detected capacity change from 0 to 32768
[ 325.173007][ T8034] loop3: detected capacity change from 0 to 32768
[ 325.175729][ T8032] loop4: detected capacity change from 0 to 32768
[ 325.188695][ T8039] loop1: detected capacity change from 0 to 32768
[ 325.210833][ T8040] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 325.214122][ T8035] loop5: detected capacity change from 0 to 32768
[ 325.219079][ T8040] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 325.243505][ T8034] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 325.253354][ T8037] loop6: detected capacity change from 0 to 32768
[ 325.260698][ T8032] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 325.270255][ T8034] CPU: 1 UID: 0 PID: 8034 Comm: syz.3.256 Not tainted syzkaller #0 PREEMPT(full)
[ 325.270284][ T8034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 325.270297][ T8034] Call Trace:
[ 325.270303][ T8034]
[ 325.270310][ T8034] dump_stack_lvl+0x97/0xe0
[ 325.270337][ T8034] sysfs_warn_dup.cold+0x1c/0x28
[ 325.270367][ T8034] sysfs_create_dir_ns+0x129/0x140
[ 325.270393][ T8034] kobject_add_internal+0x104/0x310
[ 325.270427][ T8034] kobject_init_and_add+0xb2/0xf0
[ 325.270447][ T8034] ? alloc_workqueue_noprof+0xe0/0xb60
[ 325.270469][ T8034] gfs2_sys_fs_add+0xef/0x200
[ 325.270501][ T8034] gfs2_fill_super+0x896/0x1210
[ 325.270521][ T8034] ? sb_set_blocksize+0x8c/0x150
[ 325.270553][ T8034] ? setup_bdev_super+0x19d/0x330
[ 325.270584][ T8034] ? __pfx_gfs2_fill_super+0x10/0x10
[ 325.270603][ T8034] get_tree_bdev_flags+0x1c0/0x290
[ 325.270636][ T8034] gfs2_get_tree+0x26/0xd0
[ 325.270669][ T8034] vfs_get_tree+0x30/0x120
[ 325.270696][ T8034] path_mount+0x5a9/0x1360
[ 325.270722][ T8034] __x64_sys_mount+0x1a3/0x1e0
[ 325.270748][ T8034] do_syscall_64+0xe2/0xf80
[ 325.270776][ T8034] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 325.270798][ T8034] RIP: 0033:0x7f11c2f9c10a
[ 325.270815][ T8034] 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
[ 325.270837][ T8034] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 325.270859][ T8034] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 325.270873][ T8034] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 325.270887][ T8034] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 325.270901][ T8034] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 325.270914][ T8034] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 325.270931][ T8034]
[ 325.270942][ T8034] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 325.291959][ T8038] loop0: detected capacity change from 0 to 32768
[ 325.309530][ T8040] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 325.320182][ T8032] CPU: 0 UID: 0 PID: 8032 Comm: syz.4.257 Not tainted syzkaller #0 PREEMPT(full)
[ 325.320207][ T8032] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 325.320226][ T8032] Call Trace:
[ 325.320232][ T8032]
[ 325.320238][ T8032] dump_stack_lvl+0x97/0xe0
[ 325.320267][ T8032] sysfs_warn_dup.cold+0x1c/0x28
[ 325.320295][ T8032] sysfs_create_dir_ns+0x129/0x140
[ 325.320316][ T8032] kobject_add_internal+0x104/0x310
[ 325.320347][ T8032] kobject_init_and_add+0xb2/0xf0
[ 325.320365][ T8032] ? alloc_workqueue_noprof+0xe0/0xb60
[ 325.320386][ T8032] gfs2_sys_fs_add+0xef/0x200
[ 325.320413][ T8032] gfs2_fill_super+0x896/0x1210
[ 325.320430][ T8032] ? sb_set_blocksize+0x8c/0x150
[ 325.320458][ T8032] ? setup_bdev_super+0x19d/0x330
[ 325.320483][ T8032] ? __pfx_gfs2_fill_super+0x10/0x10
[ 325.320500][ T8032] get_tree_bdev_flags+0x1c0/0x290
[ 325.320530][ T8032] gfs2_get_tree+0x26/0xd0
[ 325.320558][ T8032] vfs_get_tree+0x30/0x120
[ 325.320581][ T8032] path_mount+0x5a9/0x1360
[ 325.320604][ T8032] __x64_sys_mount+0x1a3/0x1e0
[ 325.320627][ T8032] do_syscall_64+0xe2/0xf80
[ 325.320650][ T8032] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 325.320669][ T8032] RIP: 0033:0x7f82cdb9c10a
[ 325.320683][ T8032] 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
[ 325.320701][ T8032] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 325.320719][ T8032] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 325.320731][ T8032] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 325.320743][ T8032] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 325.320754][ T8032] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 325.320766][ T8032] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 325.320780][ T8032]
[ 325.320790][ T8032] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 325.402328][ T5945] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 325.411535][ T8039] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 325.435306][ T5945] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 325.436402][ T8034] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 325.502646][ T5945] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 67ms
[ 325.511100][ T8035] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 325.514458][ T5945] gfs2: fsid=syz:syz.0: jid=0: Done
[ 325.516907][ T8035] CPU: 0 UID: 0 PID: 8035 Comm: syz.5.258 Not tainted syzkaller #0 PREEMPT(full)
[ 325.516930][ T8035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 325.516941][ T8035] Call Trace:
[ 325.516946][ T8035]
[ 325.516952][ T8035] dump_stack_lvl+0x97/0xe0
[ 325.516980][ T8035] sysfs_warn_dup.cold+0x1c/0x28
[ 325.517008][ T8035] sysfs_create_dir_ns+0x129/0x140
[ 325.517030][ T8035] kobject_add_internal+0x104/0x310
[ 325.517061][ T8035] kobject_init_and_add+0xb2/0xf0
[ 325.517078][ T8035] ? alloc_workqueue_noprof+0xe0/0xb60
[ 325.517098][ T8035] gfs2_sys_fs_add+0xef/0x200
[ 325.517125][ T8035] gfs2_fill_super+0x896/0x1210
[ 325.517142][ T8035] ? sb_set_blocksize+0x8c/0x150
[ 325.517168][ T8035] ? setup_bdev_super+0x19d/0x330
[ 325.517194][ T8035] ? __pfx_gfs2_fill_super+0x10/0x10
[ 325.517210][ T8035] get_tree_bdev_flags+0x1c0/0x290
[ 325.517240][ T8035] gfs2_get_tree+0x26/0xd0
[ 325.517267][ T8035] vfs_get_tree+0x30/0x120
[ 325.517290][ T8035] path_mount+0x5a9/0x1360
[ 325.517327][ T8035] __x64_sys_mount+0x1a3/0x1e0
[ 325.517356][ T8035] do_syscall_64+0xe2/0xf80
[ 325.517379][ T8035] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 325.517398][ T8035] RIP: 0033:0x7fc36c39c10a
[ 325.517412][ T8035] 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
[ 325.517430][ T8035] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 325.517447][ T8035] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 325.517459][ T8035] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 325.517477][ T8035] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 325.517489][ T8035] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 325.517500][ T8035] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 325.517515][ T8035]
[ 325.517524][ T8035] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 325.521708][ T8040] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 325.526297][ T8035] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 325.532548][ T8032] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 325.550506][ T8039] CPU: 0 UID: 0 PID: 8039 Comm: syz.1.254 Not tainted syzkaller #0 PREEMPT(full)
[ 325.550531][ T8039] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 325.550542][ T8039] Call Trace:
[ 325.550548][ T8039]
[ 325.550554][ T8039] dump_stack_lvl+0x97/0xe0
[ 325.550583][ T8039] sysfs_warn_dup.cold+0x1c/0x28
[ 325.550612][ T8039] sysfs_create_dir_ns+0x129/0x140
[ 325.550635][ T8039] kobject_add_internal+0x104/0x310
[ 325.550667][ T8039] kobject_init_and_add+0xb2/0xf0
[ 325.550685][ T8039] ? alloc_workqueue_noprof+0xe0/0xb60
[ 325.550706][ T8039] gfs2_sys_fs_add+0xef/0x200
[ 325.550734][ T8039] gfs2_fill_super+0x896/0x1210
[ 325.550753][ T8039] ? sb_set_blocksize+0x8c/0x150
[ 325.550780][ T8039] ? setup_bdev_super+0x19d/0x330
[ 325.550807][ T8039] ? __pfx_gfs2_fill_super+0x10/0x10
[ 325.550824][ T8039] get_tree_bdev_flags+0x1c0/0x290
[ 325.550854][ T8039] gfs2_get_tree+0x26/0xd0
[ 325.550883][ T8039] vfs_get_tree+0x30/0x120
[ 325.550907][ T8039] path_mount+0x5a9/0x1360
[ 325.550931][ T8039] __x64_sys_mount+0x1a3/0x1e0
[ 325.550954][ T8039] do_syscall_64+0xe2/0xf80
[ 325.550978][ T8039] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 325.550998][ T8039] RIP: 0033:0x7fd54fd9c10a
[ 325.551013][ T8039] 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
[ 325.551032][ T8039] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 325.551050][ T8039] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 325.551063][ T8039] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 325.551075][ T8039] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 325.551087][ T8039] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 325.551098][ T8039] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 325.551113][ T8039]
[ 325.551123][ T8039] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 325.600349][ T8038] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 325.607560][ T8039] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 325.631921][ T8038] CPU: 1 UID: 0 PID: 8038 Comm: syz.0.253 Not tainted syzkaller #0 PREEMPT(full)
[ 325.631947][ T8038] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 325.631958][ T8038] Call Trace:
[ 325.631964][ T8038]
[ 325.631970][ T8038] dump_stack_lvl+0x97/0xe0
[ 325.632000][ T8038] sysfs_warn_dup.cold+0x1c/0x28
[ 325.632028][ T8038] sysfs_create_dir_ns+0x129/0x140
[ 325.632050][ T8038] kobject_add_internal+0x104/0x310
[ 325.632080][ T8038] kobject_init_and_add+0xb2/0xf0
[ 325.632098][ T8038] ? alloc_workqueue_noprof+0xe0/0xb60
[ 325.632118][ T8038] gfs2_sys_fs_add+0xef/0x200
[ 325.632144][ T8038] gfs2_fill_super+0x896/0x1210
[ 325.632162][ T8038] ? sb_set_blocksize+0x8c/0x150
[ 325.632189][ T8038] ? setup_bdev_super+0x19d/0x330
[ 325.632223][ T8038] ? __pfx_gfs2_fill_super+0x10/0x10
[ 325.632240][ T8038] get_tree_bdev_flags+0x1c0/0x290
[ 325.632270][ T8038] gfs2_get_tree+0x26/0xd0
[ 325.632298][ T8038] vfs_get_tree+0x30/0x120
[ 325.632321][ T8038] path_mount+0x5a9/0x1360
[ 325.632345][ T8038] __x64_sys_mount+0x1a3/0x1e0
[ 325.632368][ T8038] do_syscall_64+0xe2/0xf80
[ 325.632392][ T8038] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 325.632412][ T8038] RIP: 0033:0x7f1c46b9c10a
[ 325.632427][ T8038] 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
[ 325.632445][ T8038] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 325.632464][ T8038] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 325.632476][ T8038] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 325.632498][ T8038] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 325.632510][ T8038] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 325.632521][ T8038] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 325.632536][ T8038]
[ 325.632546][ T8038] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 325.663520][ T5920] 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
[ 325.671146][ T8037] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 325.679131][ 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
[ 325.752176][ T8037] CPU: 1 UID: 0 PID: 8037 Comm: syz.6.259 Not tainted syzkaller #0 PREEMPT(full)
[ 325.752210][ T8037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 325.752221][ T8037] Call Trace:
[ 325.752227][ T8037]
[ 325.752233][ T8037] dump_stack_lvl+0x97/0xe0
[ 325.752261][ T8037] sysfs_warn_dup.cold+0x1c/0x28
[ 325.752290][ T8037] sysfs_create_dir_ns+0x129/0x140
[ 325.752312][ T8037] kobject_add_internal+0x104/0x310
[ 325.752343][ T8037] kobject_init_and_add+0xb2/0xf0
[ 325.752361][ T8037] ? alloc_workqueue_noprof+0xe0/0xb60
[ 325.752381][ T8037] gfs2_sys_fs_add+0xef/0x200
[ 325.752408][ T8037] gfs2_fill_super+0x896/0x1210
[ 325.752425][ T8037] ? sb_set_blocksize+0x8c/0x150
[ 325.752452][ T8037] ? setup_bdev_super+0x19d/0x330
[ 325.752478][ T8037] ? __pfx_gfs2_fill_super+0x10/0x10
[ 325.752495][ T8037] get_tree_bdev_flags+0x1c0/0x290
[ 325.752525][ T8037] gfs2_get_tree+0x26/0xd0
[ 325.752553][ T8037] vfs_get_tree+0x30/0x120
[ 325.752576][ T8037] path_mount+0x5a9/0x1360
[ 325.752599][ T8037] __x64_sys_mount+0x1a3/0x1e0
[ 325.752621][ T8037] do_syscall_64+0xe2/0xf80
[ 325.752644][ T8037] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 325.752663][ T8037] RIP: 0033:0x7f1d0699c10a
[ 325.752677][ T8037] 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
[ 325.752695][ T8037] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 325.752714][ T8037] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 325.752726][ T8037] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 325.752738][ T8037] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 325.752750][ T8037] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 325.752762][ T8037] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 325.752778][ T8037]
[ 325.752789][ T8037] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 325.752816][ T8037] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 325.761315][ T8038] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 325.763574][ T5920] CPU: 0 UID: 0 PID: 5920 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full)
[ 325.763599][ T5920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 325.763612][ T5920] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 325.763643][ T5920] Call Trace:
[ 325.763649][ T5920]
[ 325.763655][ T5920] dump_stack_lvl+0x97/0xe0
[ 325.763682][ T5920] gfs2_meta_check_ii.cold+0xa/0x77
[ 325.763703][ T5920] gfs2_meta_buffer+0x1a2/0x1b0
[ 325.763726][ T5920] inode_go_instantiate+0x61/0x560
[ 325.763756][ T5920] gfs2_instantiate+0xa7/0x130
[ 325.763777][ T5920] gfs2_inode_lookup+0x49a/0x520
[ 325.763796][ T5920] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 325.763816][ T5920] gfs2_lookup_by_inum+0x2f/0xb0
[ 325.763834][ T5920] delete_work_func+0xa3/0x2d0
[ 325.763860][ T5920] ? __queue_delayed_work+0x196/0x240
[ 325.763890][ T5920] process_one_work+0x277/0x5f0
[ 325.763915][ T5920] worker_thread+0x255/0x4a0
[ 325.763939][ T5920] ? __pfx_worker_thread+0x10/0x10
[ 325.763971][ T5920] kthread+0x14e/0x1a0
[ 325.763986][ T5920] ? __pfx_kthread+0x10/0x10
[ 325.764002][ T5920] ret_from_fork+0x23c/0x4b0
[ 325.764018][ T5920] ? __pfx_kthread+0x10/0x10
[ 325.764033][ T5920] ret_from_fork_asm+0x1a/0x30
[ 325.764063][ T5920]
[ 325.764069][ T5920] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 326.612360][ T8064] loop3: detected capacity change from 0 to 32768
[ 326.695600][ T8069] loop5: detected capacity change from 0 to 32768
[ 326.720039][ T8068] loop1: detected capacity change from 0 to 32768
[ 326.811780][ T8070] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 326.819685][ T8073] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 326.829324][ T8070] CPU: 0 UID: 0 PID: 8070 Comm: syz.4.263 Not tainted syzkaller #0 PREEMPT(full)
[ 326.829351][ T8070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 326.829363][ T8070] Call Trace:
[ 326.829370][ T8070]
[ 326.829376][ T8070] dump_stack_lvl+0x97/0xe0
[ 326.829408][ T8070] sysfs_warn_dup.cold+0x1c/0x28
[ 326.829439][ T8070] sysfs_create_dir_ns+0x129/0x140
[ 326.829464][ T8070] kobject_add_internal+0x104/0x310
[ 326.829497][ T8070] kobject_init_and_add+0xb2/0xf0
[ 326.829516][ T8070] ? alloc_workqueue_noprof+0xe0/0xb60
[ 326.829540][ T8070] gfs2_sys_fs_add+0xef/0x200
[ 326.829571][ T8070] gfs2_fill_super+0x896/0x1210
[ 326.829591][ T8070] ? sb_set_blocksize+0x8c/0x150
[ 326.829623][ T8070] ? setup_bdev_super+0x19d/0x330
[ 326.829653][ T8070] ? __pfx_gfs2_fill_super+0x10/0x10
[ 326.829671][ T8070] get_tree_bdev_flags+0x1c0/0x290
[ 326.829706][ T8070] gfs2_get_tree+0x26/0xd0
[ 326.829739][ T8070] vfs_get_tree+0x30/0x120
[ 326.829766][ T8070] path_mount+0x5a9/0x1360
[ 326.829814][ T8070] __x64_sys_mount+0x1a3/0x1e0
[ 326.829839][ T8070] do_syscall_64+0xe2/0xf80
[ 326.829867][ T8070] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 326.829888][ T8070] RIP: 0033:0x7f82cdb9c10a
[ 326.829903][ T8070] 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
[ 326.829924][ T8070] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 326.829945][ T8070] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 326.829958][ T8070] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 326.829970][ T8070] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 326.829983][ T8070] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 326.829995][ T8070] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 326.830011][ T8070]
[ 326.830022][ T8070] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 326.890220][ T8073] CPU: 1 UID: 0 PID: 8073 Comm: syz.0.266 Not tainted syzkaller #0 PREEMPT(full)
[ 326.890247][ T8073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 326.890275][ T8073] Call Trace:
[ 326.890281][ T8073]
[ 326.890287][ T8073] dump_stack_lvl+0x97/0xe0
[ 326.890316][ T8073] sysfs_warn_dup.cold+0x1c/0x28
[ 326.890344][ T8073] sysfs_create_dir_ns+0x129/0x140
[ 326.890366][ T8073] kobject_add_internal+0x104/0x310
[ 326.890397][ T8073] kobject_init_and_add+0xb2/0xf0
[ 326.890414][ T8073] ? alloc_workqueue_noprof+0xe0/0xb60
[ 326.890434][ T8073] gfs2_sys_fs_add+0xef/0x200
[ 326.890461][ T8073] gfs2_fill_super+0x896/0x1210
[ 326.890479][ T8073] ? sb_set_blocksize+0x8c/0x150
[ 326.890506][ T8073] ? setup_bdev_super+0x19d/0x330
[ 326.890532][ T8073] ? __pfx_gfs2_fill_super+0x10/0x10
[ 326.890548][ T8073] get_tree_bdev_flags+0x1c0/0x290
[ 326.890578][ T8073] gfs2_get_tree+0x26/0xd0
[ 326.890605][ T8073] vfs_get_tree+0x30/0x120
[ 326.890629][ T8073] path_mount+0x5a9/0x1360
[ 326.890652][ T8073] __x64_sys_mount+0x1a3/0x1e0
[ 326.890682][ T8073] do_syscall_64+0xe2/0xf80
[ 326.890706][ T8073] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 326.890726][ T8073] RIP: 0033:0x7f1c46b9c10a
[ 326.890740][ T8073] 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
[ 326.890759][ T8073] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 326.890777][ T8073] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 326.890789][ T8073] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 326.890801][ T8073] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 326.890812][ T8073] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 326.890823][ T8073] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 326.890838][ T8073]
[ 326.890848][ T8073] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 326.961160][ T8070] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 326.970734][ T8073] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 326.977848][ T8064] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 327.070376][ T8068] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 327.075092][ T8064] CPU: 0 UID: 0 PID: 8064 Comm: syz.3.261 Not tainted syzkaller #0 PREEMPT(full)
[ 327.075116][ T8064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 327.075127][ T8064] Call Trace:
[ 327.075133][ T8064]
[ 327.075139][ T8064] dump_stack_lvl+0x97/0xe0
[ 327.075169][ T8064] sysfs_warn_dup.cold+0x1c/0x28
[ 327.075197][ T8064] sysfs_create_dir_ns+0x129/0x140
[ 327.075220][ T8064] kobject_add_internal+0x104/0x310
[ 327.075252][ T8064] kobject_init_and_add+0xb2/0xf0
[ 327.075270][ T8064] ? alloc_workqueue_noprof+0xe0/0xb60
[ 327.075291][ T8064] gfs2_sys_fs_add+0xef/0x200
[ 327.075317][ T8064] gfs2_fill_super+0x896/0x1210
[ 327.075335][ T8064] ? sb_set_blocksize+0x8c/0x150
[ 327.075362][ T8064] ? setup_bdev_super+0x19d/0x330
[ 327.075388][ T8064] ? __pfx_gfs2_fill_super+0x10/0x10
[ 327.075405][ T8064] get_tree_bdev_flags+0x1c0/0x290
[ 327.075435][ T8064] gfs2_get_tree+0x26/0xd0
[ 327.075463][ T8064] vfs_get_tree+0x30/0x120
[ 327.075487][ T8064] path_mount+0x5a9/0x1360
[ 327.075510][ T8064] __x64_sys_mount+0x1a3/0x1e0
[ 327.075533][ T8064] do_syscall_64+0xe2/0xf80
[ 327.075557][ T8064] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 327.075576][ T8064] RIP: 0033:0x7f11c2f9c10a
[ 327.075590][ T8064] 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
[ 327.075608][ T8064] RSP: 002b:00007f11c3e7be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 327.075627][ T8064] RAX: ffffffffffffffda RBX: 00007f11c3e7bee0 RCX: 00007f11c2f9c10a
[ 327.075639][ T8064] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f11c3e7bea0
[ 327.075651][ T8064] RBP: 0000200000037f40 R08: 00007f11c3e7bee0 R09: 0000000000000000
[ 327.075662][ T8064] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 327.075674][ T8064] R13: 00007f11c3e7bea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 327.075689][ T8064]
[ 327.075698][ T8064] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 327.080474][ T8068] CPU: 1 UID: 0 PID: 8068 Comm: syz.1.262 Not tainted syzkaller #0 PREEMPT(full)
[ 327.080498][ T8068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 327.080508][ T8068] Call Trace:
[ 327.080514][ T8068]
[ 327.080520][ T8068] dump_stack_lvl+0x97/0xe0
[ 327.080546][ T8068] sysfs_warn_dup.cold+0x1c/0x28
[ 327.080574][ T8068] sysfs_create_dir_ns+0x129/0x140
[ 327.080596][ T8068] kobject_add_internal+0x104/0x310
[ 327.080626][ T8068] kobject_init_and_add+0xb2/0xf0
[ 327.080644][ T8068] ? alloc_workqueue_noprof+0xe0/0xb60
[ 327.080665][ T8068] gfs2_sys_fs_add+0xef/0x200
[ 327.080691][ T8068] gfs2_fill_super+0x896/0x1210
[ 327.080709][ T8068] ? sb_set_blocksize+0x8c/0x150
[ 327.080736][ T8068] ? setup_bdev_super+0x19d/0x330
[ 327.080762][ T8068] ? __pfx_gfs2_fill_super+0x10/0x10
[ 327.080779][ T8068] get_tree_bdev_flags+0x1c0/0x290
[ 327.080808][ T8068] gfs2_get_tree+0x26/0xd0
[ 327.080836][ T8068] vfs_get_tree+0x30/0x120
[ 327.080867][ T8068] path_mount+0x5a9/0x1360
[ 327.080890][ T8068] __x64_sys_mount+0x1a3/0x1e0
[ 327.080912][ T8068] do_syscall_64+0xe2/0xf80
[ 327.080935][ T8068] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 327.080954][ T8068] RIP: 0033:0x7fd54fd9c10a
[ 327.080967][ T8068] 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
[ 327.080985][ T8068] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 327.081002][ T8068] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 327.081014][ T8068] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 327.081025][ T8068] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 327.081037][ T8068] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 327.081048][ T8068] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 327.081063][ T8068]
[ 327.081071][ T8068] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 327.088538][ T8064] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 327.091055][ T8068] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 327.107070][ T8069] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 327.200467][ T8074] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 327.567234][ T8069] CPU: 0 UID: 0 PID: 8069 Comm: syz.5.264 Not tainted syzkaller #0 PREEMPT(full)
[ 327.567259][ T8069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 327.567270][ T8069] Call Trace:
[ 327.567275][ T8069]
[ 327.567282][ T8069] dump_stack_lvl+0x97/0xe0
[ 327.567310][ T8069] sysfs_warn_dup.cold+0x1c/0x28
[ 327.567338][ T8069] sysfs_create_dir_ns+0x129/0x140
[ 327.567362][ T8069] kobject_add_internal+0x104/0x310
[ 327.567393][ T8069] kobject_init_and_add+0xb2/0xf0
[ 327.567410][ T8069] ? alloc_workqueue_noprof+0xe0/0xb60
[ 327.567431][ T8069] gfs2_sys_fs_add+0xef/0x200
[ 327.567458][ T8069] gfs2_fill_super+0x896/0x1210
[ 327.567476][ T8069] ? sb_set_blocksize+0x8c/0x150
[ 327.567503][ T8069] ? setup_bdev_super+0x19d/0x330
[ 327.567529][ T8069] ? __pfx_gfs2_fill_super+0x10/0x10
[ 327.567546][ T8069] get_tree_bdev_flags+0x1c0/0x290
[ 327.567576][ T8069] gfs2_get_tree+0x26/0xd0
[ 327.567604][ T8069] vfs_get_tree+0x30/0x120
[ 327.567628][ T8069] path_mount+0x5a9/0x1360
[ 327.567652][ T8069] __x64_sys_mount+0x1a3/0x1e0
[ 327.567674][ T8069] do_syscall_64+0xe2/0xf80
[ 327.567698][ T8069] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 327.567718][ T8069] RIP: 0033:0x7fc36c39c10a
[ 327.567732][ T8069] 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
[ 327.567751][ T8069] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 327.567769][ T8069] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 327.567782][ T8069] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 327.567794][ T8069] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 327.567805][ T8069] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 327.567817][ T8069] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 327.567831][ T8069]
[ 327.567842][ T8069] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 327.571929][ T8074] CPU: 1 UID: 0 PID: 8074 Comm: syz.6.265 Not tainted syzkaller #0 PREEMPT(full)
[ 327.571952][ T8074] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 327.571963][ T8074] Call Trace:
[ 327.571968][ T8074]
[ 327.571975][ T8074] dump_stack_lvl+0x97/0xe0
[ 327.572000][ T8074] sysfs_warn_dup.cold+0x1c/0x28
[ 327.572027][ T8074] sysfs_create_dir_ns+0x129/0x140
[ 327.572049][ T8074] kobject_add_internal+0x104/0x310
[ 327.572079][ T8074] kobject_init_and_add+0xb2/0xf0
[ 327.572096][ T8074] ? alloc_workqueue_noprof+0xe0/0xb60
[ 327.572117][ T8074] gfs2_sys_fs_add+0xef/0x200
[ 327.572143][ T8074] gfs2_fill_super+0x896/0x1210
[ 327.572160][ T8074] ? sb_set_blocksize+0x8c/0x150
[ 327.572187][ T8074] ? setup_bdev_super+0x19d/0x330
[ 327.572212][ T8074] ? __pfx_gfs2_fill_super+0x10/0x10
[ 327.572229][ T8074] get_tree_bdev_flags+0x1c0/0x290
[ 327.572259][ T8074] gfs2_get_tree+0x26/0xd0
[ 327.572294][ T8074] vfs_get_tree+0x30/0x120
[ 327.572317][ T8074] path_mount+0x5a9/0x1360
[ 327.572340][ T8074] __x64_sys_mount+0x1a3/0x1e0
[ 327.572362][ T8074] do_syscall_64+0xe2/0xf80
[ 327.572385][ T8074] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 327.572404][ T8074] RIP: 0033:0x7f1d0699c10a
[ 327.572417][ T8074] 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
[ 327.572435][ T8074] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 327.572451][ T8074] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 327.572463][ T8074] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 327.572474][ T8074] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 327.572486][ T8074] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 327.572497][ T8074] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 327.572512][ T8074]
[ 327.572520][ T8074] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 327.577095][ T8069] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 327.582855][ T8074] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 331.630242][ T6428] gfs2: fsid=syz:syz.0: warning: assertion "gfs2_log_is_empty(sdp)" failed - function = gfs2_make_fs_ro, file = fs/gfs2/super.c, line = 566
[ 331.644587][ T6428] CPU: 1 UID: 0 PID: 6428 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 331.644612][ T6428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 331.644622][ T6428] Call Trace:
[ 331.644630][ T6428]
[ 331.644637][ T6428] dump_stack_lvl+0x97/0xe0
[ 331.644666][ T6428] gfs2_assert_warn_i.cold+0x38/0x94
[ 331.644689][ T6428] gfs2_make_fs_ro+0x13d/0x220
[ 331.644708][ T6428] ? __pfx_autoremove_wake_function+0x10/0x10
[ 331.644730][ T6428] gfs2_put_super+0xb4/0x2d0
[ 331.644744][ T6428] ? __pfx_gfs2_put_super+0x10/0x10
[ 331.644760][ T6428] generic_shutdown_super+0xa4/0x160
[ 331.644781][ T6428] kill_block_super+0x1d/0x50
[ 331.644801][ T6428] gfs2_kill_sb+0x1b6/0x1e0
[ 331.644823][ T6428] deactivate_locked_super+0x4f/0x120
[ 331.644845][ T6428] deactivate_super+0xa4/0xc0
[ 331.644868][ T6428] cleanup_mnt+0x145/0x1f0
[ 331.644892][ T6428] task_work_run+0x95/0xf0
[ 331.644910][ T6428] exit_to_user_mode_loop+0xcf/0x440
[ 331.644926][ T6428] do_syscall_64+0x407/0xf80
[ 331.644953][ T6428] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 331.644968][ T6428] RIP: 0033:0x7fe647b9c0d7
[ 331.644979][ T6428] 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
[ 331.644994][ T6428] RSP: 002b:00007fff7e69e3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 331.645007][ T6428] RAX: 0000000000000000 RBX: 00007fe647c2d33b RCX: 00007fe647b9c0d7
[ 331.645017][ T6428] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff7e69e490
[ 331.645025][ T6428] RBP: 00007fff7e69e490 R08: 00007fff7e69f490 R09: 00000000ffffffff
[ 331.645034][ T6428] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7e69f520
[ 331.645042][ T6428] R13: 00007fe647c2d33b R14: 000000000004f7fd R15: 00007fff7e69f560
[ 331.645053][ T6428]
[ 331.917514][ T8089] set_capacity_and_notify: 3 callbacks suppressed
[ 331.917525][ T8089] loop2: detected capacity change from 0 to 32768
[ 331.931986][ T8089] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 331.947840][ T8089] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 331.958777][ T8089] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 331.966811][ T5920] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 331.973822][ T5920] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 331.989547][ T5920] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 15ms
[ 331.997142][ T5920] gfs2: fsid=syz:syz.0: jid=0: Done
[ 332.002894][ T8089] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 332.083994][ T6713] 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
[ 332.099417][ T6650] 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
[ 332.115268][ T10] 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
[ 332.130634][ T5920] 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
[ 332.146006][ T6713] CPU: 0 UID: 0 PID: 6713 Comm: kworker/0:7 Not tainted syzkaller #0 PREEMPT(full)
[ 332.146033][ T6713] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 332.146047][ T6713] Workqueue: gfs2-delete/syz:syz delete_work_func
[ 332.146081][ T6713] Call Trace:
[ 332.146088][ T6713]
[ 332.146096][ T6713] dump_stack_lvl+0x97/0xe0
[ 332.146123][ T6713] gfs2_meta_check_ii.cold+0xa/0x77
[ 332.146143][ T6713] gfs2_meta_buffer+0x1a2/0x1b0
[ 332.146167][ T6713] inode_go_instantiate+0x61/0x560
[ 332.146196][ T6713] gfs2_instantiate+0xa7/0x130
[ 332.146217][ T6713] gfs2_inode_lookup+0x49a/0x520
[ 332.146238][ T6713] ? gfs2_lookup_by_inum+0x2f/0xb0
[ 332.146259][ T6713] gfs2_lookup_by_inum+0x2f/0xb0
[ 332.146279][ T6713] delete_work_func+0xa3/0x2d0
[ 332.146309][ T6713] process_one_work+0x277/0x5f0
[ 332.146336][ T6713] worker_thread+0x255/0x4a0
[ 332.146362][ T6713] ? __pfx_worker_thread+0x10/0x10
[ 332.146388][ T6713] kthread+0x14e/0x1a0
[ 332.146404][ T6713] ? __pfx_kthread+0x10/0x10
[ 332.146421][ T6713] ret_from_fork+0x23c/0x4b0
[ 332.146440][ T6713] ? __pfx_kthread+0x10/0x10
[ 332.146457][ T6713] ret_from_fork_asm+0x1a/0x30
[ 332.146489][ T6713]
[ 332.146496][ T6713] gfs2: fsid=syz:syz.0: about to withdraw this file system
[ 337.311207][ T5920] gfs2: fsid=syz:syz.0: file system withdrawn
2026/04/10 12:29:40 executed programs: 264
[ 340.240640][ T8107] loop3: detected capacity change from 0 to 32768
[ 340.251950][ T8111] loop0: detected capacity change from 0 to 32768
[ 340.297319][ T8107] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 340.306268][ T8115] loop6: detected capacity change from 0 to 32768
[ 340.312875][ T8107] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[ 340.319933][ T8111] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 340.327498][ T8111] CPU: 1 UID: 0 PID: 8111 Comm: syz.0.267 Not tainted syzkaller #0 PREEMPT(full)
[ 340.327526][ T8111] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 340.327540][ T8111] Call Trace:
[ 340.327546][ T8111]
[ 340.327553][ T8111] dump_stack_lvl+0x97/0xe0
[ 340.327586][ T8111] sysfs_warn_dup.cold+0x1c/0x28
[ 340.327618][ T8111] sysfs_create_dir_ns+0x129/0x140
[ 340.327644][ T8111] kobject_add_internal+0x104/0x310
[ 340.327680][ T8111] kobject_init_and_add+0xb2/0xf0
[ 340.327700][ T8111] ? alloc_workqueue_noprof+0xe0/0xb60
[ 340.327724][ T8111] gfs2_sys_fs_add+0xef/0x200
[ 340.327754][ T8111] gfs2_fill_super+0x896/0x1210
[ 340.327781][ T8111] ? sb_set_blocksize+0x8c/0x150
[ 340.327810][ T8111] ? setup_bdev_super+0x19d/0x330
[ 340.327838][ T8111] ? __pfx_gfs2_fill_super+0x10/0x10
[ 340.327855][ T8111] get_tree_bdev_flags+0x1c0/0x290
[ 340.327888][ T8111] gfs2_get_tree+0x26/0xd0
[ 340.327920][ T8111] vfs_get_tree+0x30/0x120
[ 340.327947][ T8111] path_mount+0x5a9/0x1360
[ 340.327981][ T8111] __x64_sys_mount+0x1a3/0x1e0
[ 340.328007][ T8111] do_syscall_64+0xe2/0xf80
[ 340.328033][ T8111] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 340.328054][ T8111] RIP: 0033:0x7f1c46b9c10a
[ 340.328070][ T8111] 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
[ 340.328090][ T8111] RSP: 002b:00007f1c47a32e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 340.328111][ T8111] RAX: ffffffffffffffda RBX: 00007f1c47a32ee0 RCX: 00007f1c46b9c10a
[ 340.328125][ T8111] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1c47a32ea0
[ 340.328137][ T8111] RBP: 0000200000037f40 R08: 00007f1c47a32ee0 R09: 0000000000000000
[ 340.328150][ T8111] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 340.328163][ T8111] R13: 00007f1c47a32ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 340.328179][ T8111]
[ 340.328190][ T8111] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 340.412034][ T8107] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms
[ 340.470503][ T8114] loop4: detected capacity change from 0 to 32768
[ 340.475740][ T8115] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 340.506490][ T8112] loop5: detected capacity change from 0 to 32768
[ 340.507896][ T8111] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 340.516950][ T8113] loop1: detected capacity change from 0 to 32768
[ 340.573667][ T8112] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 340.583189][ T8114] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 340.583194][ T23] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 340.583208][ T23] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 340.596883][ T8116] loop2: detected capacity change from 0 to 32768
[ 340.607592][ T8115] CPU: 1 UID: 0 PID: 8115 Comm: syz.6.273 Not tainted syzkaller #0 PREEMPT(full)
[ 340.607617][ T8115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 340.607628][ T8115] Call Trace:
[ 340.607634][ T8115]
[ 340.607641][ T8115] dump_stack_lvl+0x97/0xe0
[ 340.607670][ T8115] sysfs_warn_dup.cold+0x1c/0x28
[ 340.607698][ T8115] sysfs_create_dir_ns+0x129/0x140
[ 340.607721][ T8115] kobject_add_internal+0x104/0x310
[ 340.607759][ T8115] kobject_init_and_add+0xb2/0xf0
[ 340.607777][ T8115] ? alloc_workqueue_noprof+0xe0/0xb60
[ 340.607797][ T8115] gfs2_sys_fs_add+0xef/0x200
[ 340.607824][ T8115] gfs2_fill_super+0x896/0x1210
[ 340.607842][ T8115] ? sb_set_blocksize+0x8c/0x150
[ 340.607869][ T8115] ? setup_bdev_super+0x19d/0x330
[ 340.607895][ T8115] ? __pfx_gfs2_fill_super+0x10/0x10
[ 340.607912][ T8115] get_tree_bdev_flags+0x1c0/0x290
[ 340.607942][ T8115] gfs2_get_tree+0x26/0xd0
[ 340.607976][ T8115] vfs_get_tree+0x30/0x120
[ 340.608000][ T8115] path_mount+0x5a9/0x1360
[ 340.608023][ T8115] __x64_sys_mount+0x1a3/0x1e0
[ 340.608046][ T8115] do_syscall_64+0xe2/0xf80
[ 340.608069][ T8115] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 340.608088][ T8115] RIP: 0033:0x7f1d0699c10a
[ 340.608103][ T8115] 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
[ 340.608121][ T8115] RSP: 002b:00007f1d05ffde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 340.608139][ T8115] RAX: ffffffffffffffda RBX: 00007f1d05ffdee0 RCX: 00007f1d0699c10a
[ 340.608151][ T8115] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f1d05ffdea0
[ 340.608163][ T8115] RBP: 0000200000037f40 R08: 00007f1d05ffdee0 R09: 0000000000000000
[ 340.608175][ T8115] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 340.608186][ T8115] R13: 00007f1d05ffdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 340.608200][ T8115]
[ 340.608250][ T8115] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 340.632050][ T8112] CPU: 0 UID: 0 PID: 8112 Comm: syz.5.272 Not tainted syzkaller #0 PREEMPT(full)
[ 340.632076][ T8112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 340.632087][ T8112] Call Trace:
[ 340.632093][ T8112]
[ 340.632099][ T8112] dump_stack_lvl+0x97/0xe0
[ 340.632127][ T8112] sysfs_warn_dup.cold+0x1c/0x28
[ 340.632155][ T8112] sysfs_create_dir_ns+0x129/0x140
[ 340.632177][ T8112] kobject_add_internal+0x104/0x310
[ 340.632208][ T8112] kobject_init_and_add+0xb2/0xf0
[ 340.632226][ T8112] ? alloc_workqueue_noprof+0xe0/0xb60
[ 340.632247][ T8112] gfs2_sys_fs_add+0xef/0x200
[ 340.632274][ T8112] gfs2_fill_super+0x896/0x1210
[ 340.632291][ T8112] ? sb_set_blocksize+0x8c/0x150
[ 340.632319][ T8112] ? setup_bdev_super+0x19d/0x330
[ 340.632346][ T8112] ? __pfx_gfs2_fill_super+0x10/0x10
[ 340.632363][ T8112] get_tree_bdev_flags+0x1c0/0x290
[ 340.632393][ T8112] gfs2_get_tree+0x26/0xd0
[ 340.632421][ T8112] vfs_get_tree+0x30/0x120
[ 340.632444][ T8112] path_mount+0x5a9/0x1360
[ 340.632467][ T8112] __x64_sys_mount+0x1a3/0x1e0
[ 340.632489][ T8112] do_syscall_64+0xe2/0xf80
[ 340.632513][ T8112] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 340.632533][ T8112] RIP: 0033:0x7fc36c39c10a
[ 340.632547][ T8112] 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
[ 340.632565][ T8112] RSP: 002b:00007fc36d1ece58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 340.632583][ T8112] RAX: ffffffffffffffda RBX: 00007fc36d1ecee0 RCX: 00007fc36c39c10a
[ 340.632596][ T8112] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc36d1ecea0
[ 340.632608][ T8112] RBP: 0000200000037f40 R08: 00007fc36d1ecee0 R09: 0000000000000000
[ 340.632620][ T8112] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 340.632631][ T8112] R13: 00007fc36d1ecea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 340.632645][ T8112]
[ 340.632655][ T8112] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 340.635663][ T23] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 52ms
[ 340.636508][ T8112] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 340.643460][ T23] gfs2: fsid=syz:syz.0: jid=0: Done
[ 340.648225][ T8113] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 340.651410][ T8107] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 340.666261][ T8114] CPU: 0 UID: 0 PID: 8114 Comm: syz.4.271 Not tainted syzkaller #0 PREEMPT(full)
[ 340.666287][ T8114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 340.666298][ T8114] Call Trace:
[ 340.666303][ T8114]
[ 340.666309][ T8114] dump_stack_lvl+0x97/0xe0
[ 340.666338][ T8114] sysfs_warn_dup.cold+0x1c/0x28
[ 340.666366][ T8114] sysfs_create_dir_ns+0x129/0x140
[ 340.666388][ T8114] kobject_add_internal+0x104/0x310
[ 340.666419][ T8114] kobject_init_and_add+0xb2/0xf0
[ 340.666436][ T8114] ? alloc_workqueue_noprof+0xe0/0xb60
[ 340.666456][ T8114] gfs2_sys_fs_add+0xef/0x200
[ 340.666484][ T8114] gfs2_fill_super+0x896/0x1210
[ 340.666502][ T8114] ? sb_set_blocksize+0x8c/0x150
[ 340.666529][ T8114] ? setup_bdev_super+0x19d/0x330
[ 340.666555][ T8114] ? __pfx_gfs2_fill_super+0x10/0x10
[ 340.666572][ T8114] get_tree_bdev_flags+0x1c0/0x290
[ 340.666602][ T8114] gfs2_get_tree+0x26/0xd0
[ 340.666630][ T8114] vfs_get_tree+0x30/0x120
[ 340.666654][ T8114] path_mount+0x5a9/0x1360
[ 340.666678][ T8114] __x64_sys_mount+0x1a3/0x1e0
[ 340.666701][ T8114] do_syscall_64+0xe2/0xf80
[ 340.666724][ T8114] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 340.666745][ T8114] RIP: 0033:0x7f82cdb9c10a
[ 340.666759][ T8114] 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
[ 340.666778][ T8114] RSP: 002b:00007f82cd1fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 340.666796][ T8114] RAX: ffffffffffffffda RBX: 00007f82cd1fdee0 RCX: 00007f82cdb9c10a
[ 340.666809][ T8114] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f82cd1fdea0
[ 340.666821][ T8114] RBP: 0000200000037f40 R08: 00007f82cd1fdee0 R09: 0000000000000000
[ 340.666833][ T8114] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 340.666845][ T8114] R13: 00007f82cd1fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 340.666859][ T8114]
[ 340.666869][ T8114] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 340.720059][ T8113] CPU: 1 UID: 0 PID: 8113 Comm: syz.1.268 Not tainted syzkaller #0 PREEMPT(full)
[ 340.720084][ T8113] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 340.720100][ T8113] Call Trace:
[ 340.720106][ T8113]
[ 340.720112][ T8113] dump_stack_lvl+0x97/0xe0
[ 340.720141][ T8113] sysfs_warn_dup.cold+0x1c/0x28
[ 340.720169][ T8113] sysfs_create_dir_ns+0x129/0x140
[ 340.720192][ T8113] kobject_add_internal+0x104/0x310
[ 340.720222][ T8113] kobject_init_and_add+0xb2/0xf0
[ 340.720239][ T8113] ? alloc_workqueue_noprof+0xe0/0xb60
[ 340.720260][ T8113] gfs2_sys_fs_add+0xef/0x200
[ 340.720286][ T8113] gfs2_fill_super+0x896/0x1210
[ 340.720304][ T8113] ? sb_set_blocksize+0x8c/0x150
[ 340.720331][ T8113] ? setup_bdev_super+0x19d/0x330
[ 340.720356][ T8113] ? __pfx_gfs2_fill_super+0x10/0x10
[ 340.720373][ T8113] get_tree_bdev_flags+0x1c0/0x290
[ 340.720403][ T8113] gfs2_get_tree+0x26/0xd0
[ 340.720430][ T8113] vfs_get_tree+0x30/0x120
[ 340.720453][ T8113] path_mount+0x5a9/0x1360
[ 340.720476][ T8113] __x64_sys_mount+0x1a3/0x1e0
[ 340.720498][ T8113] do_syscall_64+0xe2/0xf80
[ 340.720521][ T8113] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 340.720541][ T8113] RIP: 0033:0x7fd54fd9c10a
[ 340.720555][ T8113] 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
[ 340.720574][ T8113] RSP: 002b:00007fd54f3fde58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 340.720593][ T8113] RAX: ffffffffffffffda RBX: 00007fd54f3fdee0 RCX: 00007fd54fd9c10a
[ 340.720605][ T8113] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fd54f3fdea0
[ 340.720617][ T8113] RBP: 0000200000037f40 R08: 00007fd54f3fdee0 R09: 0000000000000000
[ 340.720629][ T8113] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 340.720640][ T8113] R13: 00007fd54f3fdea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 340.720654][ T8113]
[ 340.720686][ T8113] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 340.726015][ T8114] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 340.811781][ T8115] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 340.827491][ T8113] gfs2: fsid=syz:syz: error -17 adding sysfs files
[ 340.850324][ T8116] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 341.501225][ T8116] CPU: 1 UID: 0 PID: 8116 Comm: syz.2.269 Not tainted syzkaller #0 PREEMPT(full)
[ 341.501253][ T8116] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 341.501266][ T8116] Call Trace:
[ 341.501272][ T8116]
[ 341.501278][ T8116] dump_stack_lvl+0x97/0xe0
[ 341.501309][ T8116] sysfs_warn_dup.cold+0x1c/0x28
[ 341.501340][ T8116] sysfs_create_dir_ns+0x129/0x140
[ 341.501364][ T8116] kobject_add_internal+0x104/0x310
[ 341.501400][ T8116] kobject_init_and_add+0xb2/0xf0
[ 341.501419][ T8116] ? alloc_workqueue_noprof+0xe0/0xb60
[ 341.501442][ T8116] gfs2_sys_fs_add+0xef/0x200
[ 341.501472][ T8116] gfs2_fill_super+0x896/0x1210
[ 341.501492][ T8116] ? sb_set_blocksize+0x8c/0x150
[ 341.501524][ T8116] ? setup_bdev_super+0x19d/0x330
[ 341.501554][ T8116] ? __pfx_gfs2_fill_super+0x10/0x10
[ 341.501573][ T8116] get_tree_bdev_flags+0x1c0/0x290
[ 341.501608][ T8116] gfs2_get_tree+0x26/0xd0
[ 341.501640][ T8116] vfs_get_tree+0x30/0x120
[ 341.501667][ T8116] path_mount+0x5a9/0x1360
[ 341.501694][ T8116] __x64_sys_mount+0x1a3/0x1e0
[ 341.501719][ T8116] do_syscall_64+0xe2/0xf80
[ 341.501746][ T8116] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 341.501768][ T8116] RIP: 0033:0x7fe647b9c10a
[ 341.501783][ T8116] 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
[ 341.501803][ T8116] RSP: 002b:00007fe648a24e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 341.501822][ T8116] RAX: ffffffffffffffda RBX: 00007fe648a24ee0 RCX: 00007fe647b9c10a
[ 341.501835][ T8116] RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fe648a24ea0
[ 341.501848][ T8116] RBP: 0000200000037f40 R08: 00007fe648a24ee0 R09: 0000000000000000
[ 341.501862][ T8116] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
[ 341.501875][ T8116] R13: 00007fe648a24ea0 R14: 0000000000037fb8 R15: 0000200000000040
[ 341.501892][ T8116]
[ 341.501903][ T8116] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[ 341.719963][ T7467] BUG: kernel NULL pointer dereference, address: 0000000000000064
[ 341.727821][ T7467] #PF: supervisor read access in kernel mode
[ 341.733814][ T7467] #PF: error_code(0x0000) - not-present page
[ 341.739794][ T7467] PGD 8000000125326067 P4D 8000000125326067 PUD 0
[ 341.746305][ T7467] Oops: Oops: 0000 [#1] SMP PTI
[ 341.751157][ T7467] CPU: 0 UID: 0 PID: 7467 Comm: kworker/0:2H Not tainted syzkaller #0 PREEMPT(full)
[ 341.760613][ T7467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 341.770669][ T7467] Workqueue: gfs2-glock/syz:syz glock_work_func
[ 341.776929][ T7467] RIP: 0010:__gfs2_trans_begin+0x117/0x3e0
[ 341.782757][ T7467] 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 8d 36 03 ff 45 39 f4 0f 82 06 02 00 00 e8
[ 341.802453][ T7467] RSP: 0000:ffffc90004ccfc48 EFLAGS: 00010293
[ 341.808519][ T7467] RAX: 0000000000000000 RBX: ffffc90004ccfc90 RCX: ffffffff828218da
[ 341.816494][ T7467] RDX: ffff888109fba380 RSI: 0000000000000004 RDI: ffff888109fba380
[ 341.824486][ T7467] RBP: ffff888115793000 R08: 0000000000000005 R09: 0000000000000000
[ 341.832457][ T7467] R10: 0000000000000000 R11: fefefefefefefeff R12: 0000000000000000
[ 341.840458][ T7467] R13: 0000000000000000 R14: 0000000000000004 R15: ffffffff827f33a1
[ 341.848521][ T7467] FS: 0000000000000000(0000) GS:ffff8881b20c1000(0000) knlGS:0000000000000000
[ 341.857456][ T7467] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 341.864045][ T7467] CR2: 0000000000000064 CR3: 000000011a47c000 CR4: 00000000003526f0
[ 341.872021][ T7467] Call Trace:
[ 341.875302][ T7467]
[ 341.878231][ T7467] gfs2_ail_empty_gl+0x10a/0x170
[ 341.883182][ T7467] ? inode_go_sync+0x131/0x320
[ 341.887960][ T7467] inode_go_sync+0x131/0x320
[ 341.892561][ T7467] do_xmote+0xd7/0x310
[ 341.896656][ T7467] run_queue+0x288/0x300
[ 341.900919][ T7467] glock_work_func+0xac/0x280
[ 341.905613][ T7467] process_one_work+0x277/0x5f0
[ 341.910472][ T7467] worker_thread+0x255/0x4a0
[ 341.915071][ T7467] ? __pfx_worker_thread+0x10/0x10
[ 341.920187][ T7467] kthread+0x14e/0x1a0
[ 341.924255][ T7467] ? __pfx_kthread+0x10/0x10
[ 341.928842][ T7467] ret_from_fork+0x23c/0x4b0
[ 341.933434][ T7467] ? __pfx_kthread+0x10/0x10
[ 341.938032][ T7467] ret_from_fork_asm+0x1a/0x30
[ 341.942810][ T7467]
[ 341.945827][ T7467] Modules linked in:
[ 341.949714][ T7467] CR2: 0000000000000064
[ 341.953875][ T7467] ---[ end trace 0000000000000000 ]---
[ 341.959329][ T7467] RIP: 0010:__gfs2_trans_begin+0x117/0x3e0
[ 341.965161][ T7467] 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 8d 36 03 ff 45 39 f4 0f 82 06 02 00 00 e8
[ 341.984782][ T7467] RSP: 0000:ffffc90004ccfc48 EFLAGS: 00010293
[ 341.990866][ T7467] RAX: 0000000000000000 RBX: ffffc90004ccfc90 RCX: ffffffff828218da
[ 341.998839][ T7467] RDX: ffff888109fba380 RSI: 0000000000000004 RDI: ffff888109fba380
[ 342.006810][ T7467] RBP: ffff888115793000 R08: 0000000000000005 R09: 0000000000000000
[ 342.014795][ T7467] R10: 0000000000000000 R11: fefefefefefefeff R12: 0000000000000000
[ 342.022777][ T7467] R13: 0000000000000000 R14: 0000000000000004 R15: ffffffff827f33a1
[ 342.030762][ T7467] FS: 0000000000000000(0000) GS:ffff8881b20c1000(0000) knlGS:0000000000000000
[ 342.039985][ T7467] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 342.046791][ T7467] CR2: 0000000000000064 CR3: 000000011a47c000 CR4: 00000000003526f0
[ 342.054786][ T7467] Kernel panic - not syncing: Fatal exception
[ 342.061400][ T7467] Kernel Offset: disabled
[ 342.065727][ T7467] Rebooting in 86400 seconds..