INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 23.944306] gfs2: fsid=resize: Trying to join cluster "lock_nolock", "resize" [ 23.951729] gfs2: fsid=resize: Now mounting FS... [ 23.954973] sysfs: cannot create duplicate filename '/fs/gfs2/resize' [ 23.963216] CPU: 0 PID: 4468 Comm: syzkaller481884 Not tainted 4.16.0+ #11 [ 23.970230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.970540] sysfs: cannot create duplicate filename '/fs/gfs2/resize' [ 23.980316] Call Trace: [ 23.980332] dump_stack+0x1a7/0x27d [ 23.980349] ? arch_local_irq_restore+0x53/0x53 [ 23.980369] ? trace_hardirqs_on+0xd/0x10 [ 23.980379] ? sysfs_warn_dup+0x6c/0xa0 [ 24.006571] sysfs_warn_dup+0x83/0xa0 [ 24.010369] sysfs_create_dir_ns+0x178/0x1d0 [ 24.014775] kobject_add_internal+0x335/0xbc0 [ 24.019261] ? kobj_ns_type_registered+0x50/0x50 [ 24.024006] ? kfree_const+0x31/0x40 [ 24.028028] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.033035] ? kfree+0x1f6/0x260 [ 24.036395] ? kfree_const+0x36/0x40 [ 24.040101] kobject_init_and_add+0xf9/0x150 [ 24.044499] ? kset_create_and_add+0x170/0x170 [ 24.049071] ? vsnprintf+0x1ed/0x1900 [ 24.052867] gfs2_sys_fs_add+0x1ff/0x580 [ 24.056916] ? recover_store+0x160/0x160 [ 24.060969] ? snprintf+0xc0/0xf0 [ 24.064409] ? vsprintf+0x40/0x40 [ 24.067856] ? set_blocksize+0x1f1/0x260 [ 24.071907] ? memcpy+0x45/0x50 [ 24.075182] fill_super+0x86f/0x1d70 [ 24.078883] ? vsnprintf+0x1ed/0x1900 [ 24.082679] ? gfs2_online_uevent+0x2a0/0x2a0 [ 24.087160] ? memcpy+0x45/0x50 [ 24.090432] ? match_strlcpy+0xbc/0xf0 [ 24.094313] ? snprintf+0xc0/0xf0 [ 24.097757] ? vsprintf+0x40/0x40 [ 24.101207] ? ns_capable_common+0xcf/0x160 [ 24.105519] ? set_blocksize+0x1f1/0x260 [ 24.109739] gfs2_mount+0x587/0x6e0 [ 24.113369] ? gfs2_mount+0x587/0x6e0 [ 24.117162] ? fill_super+0x1d70/0x1d70 [ 24.121147] mount_fs+0x66/0x2d0 [ 24.124508] vfs_kern_mount.part.26+0xc6/0x4a0 [ 24.129077] ? may_umount+0xa0/0xa0 [ 24.132692] ? _raw_read_unlock+0x22/0x30 [ 24.136830] ? __get_fs_type+0x8a/0xc0 [ 24.140707] do_mount+0xea4/0x2bb0 [ 24.144236] ? copy_mount_string+0x40/0x40 [ 24.148460] ? rcu_pm_notify+0xc0/0xc0 [ 24.152342] ? copy_mount_options+0x5f/0x2e0 [ 24.156738] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.161750] ? kmem_cache_alloc_trace+0x459/0x740 [ 24.166584] ? kasan_check_write+0x14/0x20 [ 24.170805] ? _copy_from_user+0x99/0x110 [ 24.174942] ? copy_mount_options+0x1f7/0x2e0 [ 24.179428] SyS_mount+0xab/0x120 [ 24.182875] ? copy_mnt_ns+0xb40/0xb40 [ 24.186754] do_syscall_64+0x281/0x940 [ 24.190634] ? vmalloc_sync_all+0x30/0x30 [ 24.194774] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.199522] ? syscall_return_slowpath+0x550/0x550 [ 24.204461] ? syscall_return_slowpath+0x2ac/0x550 [ 24.209382] ? prepare_exit_to_usermode+0x350/0x350 [ 24.214386] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 24.219750] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.224591] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.229773] RIP: 0033:0x44328a [ 24.232949] RSP: 002b:00007ffcdfdf4bc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 24.240644] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044328a [ 24.247901] RDX: 0000000020000680 RSI: 00000000200006c0 RDI: 00007ffcdfdf4be0 [ 24.255161] RBP: 0000000000000004 R08: 0000000020000780 R09: 000000000000000a [ 24.262420] R10: 0000000000000001 R11: 0000000000000286 R12: 0000000000401cf0 [ 24.269676] R13: 6e6f3d61746f7571 R14: 0030656c69662f2e R15: 6f74617463657073 [ 24.276962] CPU: 1 PID: 4469 Comm: syzkaller481884 Not tainted 4.16.0+ #11 [ 24.277065] ------------[ cut here ]------------ [ 24.283964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.283968] Call Trace: [ 24.283983] dump_stack+0x1a7/0x27d [ 24.283994] ? arch_local_irq_restore+0x53/0x53 [ 24.288915] kobject_add_internal failed for resize with -EEXIST, don't try to register things with the same name in the same directory. [ 24.298237] ? trace_hardirqs_on+0xd/0x10 [ 24.298247] ? sysfs_warn_dup+0x6c/0xa0 [ 24.298261] sysfs_warn_dup+0x83/0xa0 [ 24.301053] WARNING: CPU: 0 PID: 4468 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 [ 24.304448] sysfs_create_dir_ns+0x178/0x1d0 [ 24.309090] Kernel panic - not syncing: panic_on_warn set ... [ 24.309090] [ 24.321375] kobject_add_internal+0x335/0xbc0 [ 24.357884] ? kobj_ns_type_registered+0x50/0x50 [ 24.362630] ? kfree_const+0x31/0x40 [ 24.366330] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.371333] ? kfree+0x1f6/0x260 [ 24.374689] ? kfree_const+0x36/0x40 [ 24.378391] kobject_init_and_add+0xf9/0x150 [ 24.382790] ? kset_create_and_add+0x170/0x170 [ 24.387359] ? vsnprintf+0x1ed/0x1900 [ 24.391153] gfs2_sys_fs_add+0x1ff/0x580 [ 24.395198] ? recover_store+0x160/0x160 [ 24.399248] ? snprintf+0xc0/0xf0 [ 24.402687] ? vsprintf+0x40/0x40 [ 24.406127] ? set_blocksize+0x1f1/0x260 [ 24.410179] ? memcpy+0x45/0x50 [ 24.413534] fill_super+0x86f/0x1d70 [ 24.417242] ? vsnprintf+0x1ed/0x1900 [ 24.421030] ? gfs2_online_uevent+0x2a0/0x2a0 [ 24.425508] ? memcpy+0x45/0x50 [ 24.428778] ? match_strlcpy+0xbc/0xf0 [ 24.432656] ? snprintf+0xc0/0xf0 [ 24.436095] ? vsprintf+0x40/0x40 [ 24.439536] ? ns_capable_common+0xcf/0x160 [ 24.443842] ? set_blocksize+0x1f1/0x260 [ 24.447891] gfs2_mount+0x587/0x6e0 [ 24.451504] ? gfs2_mount+0x587/0x6e0 [ 24.455288] ? fill_super+0x1d70/0x1d70 [ 24.459265] mount_fs+0x66/0x2d0 [ 24.462623] vfs_kern_mount.part.26+0xc6/0x4a0 [ 24.467193] ? may_umount+0xa0/0xa0 [ 24.470812] ? _raw_read_unlock+0x22/0x30 [ 24.474947] ? __get_fs_type+0x8a/0xc0 [ 24.478825] do_mount+0xea4/0x2bb0 [ 24.482352] ? kasan_check_read+0x11/0x20 [ 24.486488] ? do_raw_spin_unlock+0x9e/0x310 [ 24.490882] ? copy_mount_string+0x40/0x40 [ 24.495104] ? rcu_pm_notify+0xc0/0xc0 [ 24.498982] ? copy_mount_options+0x5f/0x2e0 [ 24.503374] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.508379] ? kmem_cache_alloc_trace+0x459/0x740 [ 24.513209] ? kasan_check_write+0x14/0x20 [ 24.517436] ? copy_mount_options+0x1f7/0x2e0 [ 24.521919] SyS_mount+0xab/0x120 [ 24.525355] ? copy_mnt_ns+0xb40/0xb40 [ 24.529234] do_syscall_64+0x281/0x940 [ 24.533109] ? vmalloc_sync_all+0x30/0x30 [ 24.537243] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.541993] ? syscall_return_slowpath+0x550/0x550 [ 24.546919] ? syscall_return_slowpath+0x2ac/0x550 [ 24.551832] ? prepare_exit_to_usermode+0x350/0x350 [ 24.556837] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 24.562191] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.567025] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.572211] RIP: 0033:0x44328a [ 24.575391] RSP: 002b:00007ffcdfdf4bc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 24.583083] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044328a [ 24.591512] RDX: 0000000020000680 RSI: 00000000200006c0 RDI: 00007ffcdfdf4be0 [ 24.598772] RBP: 0000000000000004 R08: 0000000020000780 R09: 000000000000000a [ 24.606028] R10: 0000000000000001 R11: 0000000000000286 R12: 0000000000401cf0 [ 24.613281] R13: 6e6f3d61746f7571 R14: 0030656c69662f2e R15: 6f74617463657073 [ 24.620551] CPU: 0 PID: 4468 Comm: syzkaller481884 Not tainted 4.16.0+ #11 [ 24.620635] ------------[ cut here ]------------ [ 24.627551] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.627554] Call Trace: [ 24.627568] dump_stack+0x1a7/0x27d [ 24.627580] ? arch_local_irq_restore+0x53/0x53 [ 24.627591] ? vsnprintf+0x1ed/0x1900 [ 24.632344] kobject_add_internal failed for resize with -EEXIST, don't try to register things with the same name in the same directory. [ 24.641665] panic+0x1f8/0x42c [ 24.641673] ? refcount_error_report+0x214/0x214 [ 24.641682] ? show_regs_print_info+0x18/0x18 [ 24.641691] ? vprintk_emit+0xa5f/0xb90 [ 24.644472] WARNING: CPU: 1 PID: 4469 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 [ 24.647865] ? __warn+0x1c1/0x200 [ 24.652504] Modules linked in: [ 24.656284] ? kobject_add_internal+0x8d4/0xbc0 [ 24.668567] CPU: 1 PID: 4469 Comm: syzkaller481884 Not tainted 4.16.0+ #11 [ 24.671741] __warn+0x1dc/0x200 [ 24.676476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.676485] RIP: 0010:kobject_add_internal+0x8d4/0xbc0 [ 24.680958] ? kobject_add_internal+0x8d4/0xbc0 [ 24.684905] RSP: 0018:ffff8801af9df4a0 EFLAGS: 00010282 [ 24.693371] report_bug+0x1f4/0x2b0 [ 24.699977] fixup_bug.part.10+0x37/0x80 [ 24.704614] RAX: dffffc0000000008 RBX: ffff8801afda9190 RCX: ffffffff815ae26e [ 24.704620] RDX: 0000000000000000 RSI: 1ffff10035f3be44 RDI: 1ffff10035f3be19 [ 24.711699] do_error_trap+0x2d7/0x3e0 [ 24.714951] RBP: ffff8801af9df598 R08: 1ffff10035f3bddb R09: 0000000000000001 [ 24.714957] R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff10035f3be9a [ 24.724291] ? vprintk_default+0x28/0x30 [ 24.729538] R13: 00000000ffffffef R14: ffff8801d41e2048 R15: 1ffff10035f3be9e [ 24.734185] ? math_error+0x400/0x400 [ 24.739521] FS: 0000000000b8f880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 24.743121] ? printk+0xaa/0xca [ 24.747152] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.747158] CR2: 00007f735651d518 CR3: 00000001b03eb004 CR4: 00000000001606e0 [ 24.754518] ? show_regs_print_info+0x18/0x18 [ 24.761766] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.765637] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.772874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.772878] Call Trace: [ 24.780130] do_invalid_op+0x1b/0x20 [ 24.784169] ? kobj_ns_type_registered+0x50/0x50 [ 24.791427] invalid_op+0x1b/0x40 [ 24.795206] ? kfree_const+0x31/0x40 [ 24.803406] RIP: 0010:kobject_add_internal+0x8d4/0xbc0 [ 24.806662] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.812514] RSP: 0018:ffff8801aff774a0 EFLAGS: 00010282 [ 24.819774] ? kfree+0x1f6/0x260 [ 24.824246] RAX: dffffc0000000008 RBX: ffff8801af961150 RCX: ffffffff815ae26e [ 24.831498] ? kfree_const+0x36/0x40 [ 24.836310] RDX: 0000000000000000 RSI: 1ffff10035feee44 RDI: 1ffff10035feee19 [ 24.843565] kobject_init_and_add+0xf9/0x150 [ 24.846118] RBP: ffff8801aff77598 R08: 1ffff10035feeddb R09: 0000000000000000 [ 24.846124] R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff10035feee9a [ 24.849813] ? kset_create_and_add+0x170/0x170 [ 24.854537] R13: 00000000ffffffef R14: ffff8801d41e2048 R15: 1ffff10035feee9e [ 24.854550] ? vprintk_func+0x5e/0xc0 [ 24.857981] ? vsnprintf+0x1ed/0x1900 [ 24.861676] ? kobj_ns_type_registered+0x50/0x50 [ 24.866934] gfs2_sys_fs_add+0x1ff/0x580 [ 24.871921] ? kfree_const+0x31/0x40 [ 24.877260] ? recover_store+0x160/0x160 [ 24.880611] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.887860] ? snprintf+0xc0/0xf0 [ 24.891561] ? kfree+0x1f6/0x260 [ 24.898814] ? vsprintf+0x40/0x40 [ 24.903197] ? kfree_const+0x36/0x40 [ 24.910452] ? set_blocksize+0x1f1/0x260 [ 24.917709] kobject_init_and_add+0xf9/0x150 [ 24.922263] ? memcpy+0x45/0x50 [ 24.929513] ? kset_create_and_add+0x170/0x170 [ 24.933291] fill_super+0x86f/0x1d70 [ 24.937155] ? vsnprintf+0x1ed/0x1900 [ 24.941901] ? vsnprintf+0x1ed/0x1900 [ 24.945946] gfs2_sys_fs_add+0x1ff/0x580 [ 24.949636] ? gfs2_online_uevent+0x2a0/0x2a0 [ 24.953674] ? recover_store+0x160/0x160 [ 24.958667] ? memcpy+0x45/0x50 [ 24.962097] ? snprintf+0xc0/0xf0 [ 24.965439] ? match_strlcpy+0xbc/0xf0 [ 24.968868] ? vsprintf+0x40/0x40 [ 24.972556] ? snprintf+0xc0/0xf0 [ 24.976594] ? set_blocksize+0x1f1/0x260 [ 24.980985] ? vsprintf+0x40/0x40 [ 24.980996] ? ns_capable_common+0xcf/0x160 [ 24.981005] ? set_blocksize+0x1f1/0x260 [ 24.981018] gfs2_mount+0x587/0x6e0 [ 24.981025] ? gfs2_mount+0x587/0x6e0 [ 24.981034] ? fill_super+0x1d70/0x1d70 [ 24.981060] mount_fs+0x66/0x2d0 [ 24.981070] vfs_kern_mount.part.26+0xc6/0x4a0 [ 24.981079] ? may_umount+0xa0/0xa0 [ 24.981089] ? _raw_read_unlock+0x22/0x30 [ 24.981096] ? __get_fs_type+0x8a/0xc0 [ 24.981106] do_mount+0xea4/0x2bb0 [ 24.981114] ? kasan_check_read+0x11/0x20 [ 24.981122] ? do_raw_spin_unlock+0x9e/0x310 [ 24.981130] ? copy_mount_string+0x40/0x40 [ 24.981139] ? rcu_pm_notify+0xc0/0xc0 [ 24.981150] ? copy_mount_options+0x5f/0x2e0 [ 24.981157] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.981165] ? kmem_cache_alloc_trace+0x459/0x740 [ 24.981173] ? kasan_check_write+0x14/0x20 [ 24.981184] ? copy_mount_options+0x1f7/0x2e0 [ 24.981199] SyS_mount+0xab/0x120 [ 24.981205] ? copy_mnt_ns+0xb40/0xb40 [ 24.981215] do_syscall_64+0x281/0x940 [ 24.981224] ? vmalloc_sync_all+0x30/0x30 [ 24.981232] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.981241] ? syscall_return_slowpath+0x550/0x550 [ 24.981249] ? syscall_return_slowpath+0x2ac/0x550 [ 24.981257] ? prepare_exit_to_usermode+0x350/0x350 [ 24.981264] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 24.981275] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.981286] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.981294] RIP: 0033:0x44328a [ 24.981299] RSP: 002b:00007ffcdfdf4bc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 24.981307] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044328a [ 24.981312] RDX: 0000000020000680 RSI: 00000000200006c0 RDI: 00007ffcdfdf4be0 [ 24.981316] RBP: 0000000000000004 R08: 0000000020000780 R09: 000000000000000a [ 24.981320] R10: 0000000000000001 R11: 0000000000000286 R12: 0000000000401cf0 [ 24.981325] R13: 6e6f3d61746f7571 R14: 0030656c69662f2e R15: 6f74617463657073 [ 24.981337] Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 48 8b 13 48 c7 c6 c0 37 d6 87 48 c7 c7 20 35 d6 87 e8 4c d3 5d fa <0f> 0b e9 1d fb ff ff e8 c0 8e 8d fa 0f 0b e9 29 fe ff ff e8 b4 [ 24.981505] ---[ end trace 86639a1b7235da6b ]--- [ 24.981617] gfs2: fsid=resize: error -17 adding sysfs files [ 24.992450] sysfs: cannot create duplicate filename '/fs/gfs2/resize' [ 24.995601] ? memcpy+0x45/0x50 [ 24.995616] fill_super+0x86f/0x1d70 [ 24.995628] ? vsnprintf+0x1ed/0x1900 [ 25.269660] ? gfs2_online_uevent+0x2a0/0x2a0 [ 25.274150] ? memcpy+0x45/0x50 [ 25.277420] ? match_strlcpy+0xbc/0xf0 [ 25.281301] ? snprintf+0xc0/0xf0 [ 25.284741] ? vsprintf+0x40/0x40 [ 25.288183] ? ns_capable_common+0xcf/0x160 [ 25.292493] ? set_blocksize+0x1f1/0x260 [ 25.296544] gfs2_mount+0x587/0x6e0 [ 25.300386] ? gfs2_mount+0x587/0x6e0 [ 25.304208] ? fill_super+0x1d70/0x1d70 [ 25.308380] mount_fs+0x66/0x2d0 [ 25.311737] vfs_kern_mount.part.26+0xc6/0x4a0 [ 25.316312] ? may_umount+0xa0/0xa0 [ 25.319929] ? _raw_read_unlock+0x22/0x30 [ 25.324063] ? __get_fs_type+0x8a/0xc0 [ 25.327972] do_mount+0xea4/0x2bb0 [ 25.331505] ? copy_mount_string+0x40/0x40 [ 25.335730] ? rcu_pm_notify+0xc0/0xc0 [ 25.339614] ? copy_mount_options+0x5f/0x2e0 [ 25.344011] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.349022] ? kmem_cache_alloc_trace+0x459/0x740 [ 25.353854] ? kasan_check_write+0x14/0x20 [ 25.358075] ? _copy_from_user+0x99/0x110 [ 25.362215] ? copy_mount_options+0x1f7/0x2e0 [ 25.366703] SyS_mount+0xab/0x120 [ 25.370140] ? copy_mnt_ns+0xb40/0xb40 [ 25.374022] do_syscall_64+0x281/0x940 [ 25.377900] ? vmalloc_sync_all+0x30/0x30 [ 25.382039] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.386785] ? syscall_return_slowpath+0x550/0x550 [ 25.391705] ? syscall_return_slowpath+0x2ac/0x550 [ 25.396623] ? prepare_exit_to_usermode+0x350/0x350 [ 25.401632] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 25.406990] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.411825] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.417012] RIP: 0033:0x44328a [ 25.420188] RSP: 002b:00007ffcdfdf4bc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 25.427887] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044328a [ 25.435145] RDX: 0000000020000680 RSI: 00000000200006c0 RDI: 00007ffcdfdf4be0 [ 25.442409] RBP: 0000000000000004 R08: 0000000020000780 R09: 000000000000000a [ 25.449707] R10: 0000000000000001 R11: 0000000000000286 R12: 0000000000401cf0 [ 25.456967] R13: 6e6f3d61746f7571 R14: 0030656c69662f2e R15: 6f74617463657073 [ 25.464245] CPU: 1 PID: 4466 Comm: syzkaller481884 Tainted: G W 4.16.0+ #11 [ 25.472552] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.481890] Call Trace: [ 25.484460] dump_stack+0x1a7/0x27d [ 25.488079] ? arch_local_irq_restore+0x53/0x53 [ 25.492739] ? trace_hardirqs_on+0xd/0x10 [ 25.496871] ? sysfs_warn_dup+0x6c/0xa0 [ 25.500829] sysfs_warn_dup+0x83/0xa0 [ 25.504616] sysfs_create_dir_ns+0x178/0x1d0 [ 25.509008] kobject_add_internal+0x335/0xbc0 [ 25.513487] ? kobj_ns_type_registered+0x50/0x50 [ 25.518226] ? kfree_const+0x31/0x40 [ 25.521932] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.526933] ? kfree+0x1f6/0x260 [ 25.530287] ? kfree_const+0x36/0x40 [ 25.533987] kobject_init_and_add+0xf9/0x150 [ 25.538378] ? kset_create_and_add+0x170/0x170 [ 25.542946] ? vsnprintf+0x1ed/0x1900 [ 25.546738] gfs2_sys_fs_add+0x1ff/0x580 [ 25.550782] ? recover_store+0x160/0x160 [ 25.554825] ? snprintf+0xc0/0xf0 [ 25.558259] ? vsprintf+0x40/0x40 [ 25.561717] ? set_blocksize+0x1f1/0x260 [ 25.565762] ? memcpy+0x45/0x50 [ 25.569029] fill_super+0x86f/0x1d70 [ 25.572731] ? vsnprintf+0x1ed/0x1900 [ 25.576519] ? gfs2_online_uevent+0x2a0/0x2a0 [ 25.580999] ? memcpy+0x45/0x50 [ 25.584266] ? match_strlcpy+0xbc/0xf0 [ 25.588171] ? snprintf+0xc0/0xf0 [ 25.591621] ? vsprintf+0x40/0x40 [ 25.595062] ? ns_capable_common+0xcf/0x160 [ 25.599373] ? set_blocksize+0x1f1/0x260 [ 25.603425] gfs2_mount+0x587/0x6e0 [ 25.607037] ? gfs2_mount+0x587/0x6e0 [ 25.610825] ? fill_super+0x1d70/0x1d70 [ 25.614799] mount_fs+0x66/0x2d0 [ 25.618156] vfs_kern_mount.part.26+0xc6/0x4a0 [ 25.622723] ? may_umount+0xa0/0xa0 [ 25.626335] ? _raw_read_unlock+0x22/0x30 [ 25.630467] ? __get_fs_type+0x8a/0xc0 [ 25.634344] do_mount+0xea4/0x2bb0 [ 25.637868] ? kasan_check_read+0x11/0x20 [ 25.642007] ? do_raw_spin_unlock+0x9e/0x310 [ 25.646397] ? copy_mount_string+0x40/0x40 [ 25.650624] ? rcu_pm_notify+0xc0/0xc0 [ 25.654503] ? copy_mount_options+0x5f/0x2e0 [ 25.658893] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.663891] ? kmem_cache_alloc_trace+0x459/0x740 [ 25.668720] ? kasan_check_write+0x14/0x20 [ 25.672940] ? copy_mount_options+0x1f7/0x2e0 [ 25.677423] SyS_mount+0xab/0x120 [ 25.680861] ? copy_mnt_ns+0xb40/0xb40 [ 25.684732] do_syscall_64+0x281/0x940 [ 25.688607] ? vmalloc_sync_all+0x30/0x30 [ 25.692739] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.697480] ? syscall_return_slowpath+0x550/0x550 [ 25.702393] ? syscall_return_slowpath+0x2ac/0x550 [ 25.707306] ? prepare_exit_to_usermode+0x350/0x350 [ 25.712319] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 25.717670] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.722499] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.727672] RIP: 0033:0x44328a [ 25.730853] RSP: 002b:00007ffcdfdf4bc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 25.738548] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044328a [ 25.745802] RDX: 0000000020000680 RSI: 00000000200006c0 RDI: 00007ffcdfdf4be0 [ 25.753054] RBP: 0000000000000004 R08: 0000000020000780 R09: 000000000000000a [ 25.760323] R10: 0000000000000001 R11: 0000000000000286 R12: 0000000000401cf0 [ 25.767580] R13: 6e6f3d61746f7571 R14: 0030656c69662f2e R15: 6f74617463657073 [ 25.775320] Dumping ftrace buffer: [ 25.778998] (ftrace buffer empty) [ 25.782688] Kernel Offset: disabled [ 25.786299] Rebooting in 86400 seconds..