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 '10.128.10.31' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 27.722172] gfs2: can't find protocol lock_noock [ 27.723092] sysfs: cannot create duplicate filename '/fs/gfs2/!' [ 27.728723] sysfs: cannot create duplicate filename '/fs/gfs2/!' [ 27.733428] CPU: 1 PID: 4432 Comm: syzkaller661252 Not tainted 4.16.0+ #10 [ 27.733433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.733439] Call Trace: [ 27.758470] dump_stack+0x194/0x24d [ 27.762081] ? arch_local_irq_restore+0x53/0x53 [ 27.766732] ? _raw_spin_unlock_irqrestore+0x5e/0xc0 [ 27.771820] ? sysfs_warn_dup+0x6c/0xa0 [ 27.775780] sysfs_warn_dup+0x83/0xa0 [ 27.779565] sysfs_create_dir_ns+0x178/0x1d0 [ 27.783956] kobject_add_internal+0x335/0xbc0 [ 27.788434] ? kobj_ns_type_registered+0x50/0x50 [ 27.793172] ? kfree_const+0x31/0x40 [ 27.796868] ? rcu_read_lock_sched_held+0x108/0x120 [ 27.801867] ? kfree+0x1f6/0x260 [ 27.805217] ? kfree_const+0x36/0x40 [ 27.808916] kobject_init_and_add+0xf9/0x150 [ 27.813313] ? kset_create_and_add+0x170/0x170 [ 27.817878] ? vsnprintf+0x1ed/0x1900 [ 27.821667] gfs2_sys_fs_add+0x1ff/0x580 [ 27.825709] ? recover_store+0x160/0x160 [ 27.829750] ? snprintf+0xc0/0xf0 [ 27.833182] ? vsprintf+0x40/0x40 [ 27.836623] ? set_blocksize+0x1f1/0x260 [ 27.840665] ? memcpy+0x45/0x50 [ 27.843931] fill_super+0x86f/0x1d70 [ 27.847629] ? vsnprintf+0x1ed/0x1900 [ 27.851415] ? gfs2_online_uevent+0x2a0/0x2a0 [ 27.855895] ? memcpy+0x45/0x50 [ 27.859158] ? match_strlcpy+0xbc/0xf0 [ 27.863034] ? snprintf+0xc0/0xf0 [ 27.866468] ? vsprintf+0x40/0x40 [ 27.869905] ? ns_capable_common+0xcf/0x160 [ 27.874211] ? set_blocksize+0x1f1/0x260 [ 27.878254] gfs2_mount+0x587/0x6e0 [ 27.881866] ? gfs2_mount+0x587/0x6e0 [ 27.885646] ? fill_super+0x1d70/0x1d70 [ 27.889618] mount_fs+0x66/0x2d0 [ 27.892969] vfs_kern_mount.part.26+0xc6/0x4a0 [ 27.897532] ? may_umount+0xa0/0xa0 [ 27.901143] ? _raw_read_unlock+0x22/0x30 [ 27.905271] ? __get_fs_type+0x8a/0xc0 [ 27.909145] do_mount+0xea4/0x2bb0 [ 27.912668] ? copy_mount_string+0x40/0x40 [ 27.916890] ? rcu_pm_notify+0xc0/0xc0 [ 27.920765] ? copy_mount_options+0x5f/0x2e0 [ 27.925153] ? rcu_read_lock_sched_held+0x108/0x120 [ 27.930149] ? kmem_cache_alloc_trace+0x459/0x740 [ 27.934975] ? kasan_check_write+0x14/0x20 [ 27.939198] ? _copy_from_user+0x99/0x110 [ 27.943331] ? copy_mount_options+0x1f7/0x2e0 [ 27.947808] SyS_mount+0xab/0x120 [ 27.951243] ? copy_mnt_ns+0xb30/0xb30 [ 27.955117] do_syscall_64+0x281/0x940 [ 27.958986] ? vmalloc_sync_all+0x30/0x30 [ 27.963115] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.967853] ? syscall_return_slowpath+0x550/0x550 [ 27.972762] ? syscall_return_slowpath+0x2ac/0x550 [ 27.977673] ? prepare_exit_to_usermode+0x350/0x350 [ 27.982672] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 27.988023] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.992851] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 27.998021] RIP: 0033:0x4430ba [ 28.001193] RSP: 002b:00007ffccbb80ca8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 28.008885] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba [ 28.016135] RDX: 00000000200001c0 RSI: 0000000020000200 RDI: 00007ffccbb80cc0 [ 28.023387] RBP: 00000000006cb018 R08: 0000000020000500 R09: 000000000000000a [ 28.030638] R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f [ 28.037887] R13: 746f72706b636f6c R14: 0031656c69662f2e R15: 0000000000000004 [ 28.045160] CPU: 0 PID: 4433 Comm: syzkaller661252 Not tainted 4.16.0+ #10 [ 28.045340] ------------[ cut here ]------------ [ 28.052158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.052162] Call Trace: [ 28.052175] dump_stack+0x194/0x24d [ 28.052185] ? arch_local_irq_restore+0x53/0x53 [ 28.052197] ? trace_hardirqs_on+0xd/0x10 [ 28.056939] kobject_add_internal failed for ! with -EEXIST, don't try to register things with the same name in the same directory. [ 28.066251] ? sysfs_warn_dup+0x6c/0xa0 [ 28.066262] sysfs_warn_dup+0x83/0xa0 [ 28.066271] sysfs_create_dir_ns+0x178/0x1d0 [ 28.066280] kobject_add_internal+0x335/0xbc0 [ 28.069060] WARNING: CPU: 1 PID: 4432 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 [ 28.072435] ? kobj_ns_type_registered+0x50/0x50 [ 28.077069] Kernel panic - not syncing: panic_on_warn set ... [ 28.077069] [ 28.081194] ? kfree_const+0x31/0x40 [ 28.133793] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.138787] ? kfree+0x1f6/0x260 [ 28.142133] ? kfree_const+0x36/0x40 [ 28.145829] kobject_init_and_add+0xf9/0x150 [ 28.150215] ? kset_create_and_add+0x170/0x170 [ 28.154778] ? vsnprintf+0x1ed/0x1900 [ 28.158565] gfs2_sys_fs_add+0x1ff/0x580 [ 28.162605] ? recover_store+0x160/0x160 [ 28.166657] ? snprintf+0xc0/0xf0 [ 28.170103] ? vsprintf+0x40/0x40 [ 28.173547] ? set_blocksize+0x1f1/0x260 [ 28.177598] ? memcpy+0x45/0x50 [ 28.180873] fill_super+0x86f/0x1d70 [ 28.184585] ? vsnprintf+0x1ed/0x1900 [ 28.188382] ? gfs2_online_uevent+0x2a0/0x2a0 [ 28.192872] ? memcpy+0x45/0x50 [ 28.196145] ? match_strlcpy+0xbc/0xf0 [ 28.200028] ? snprintf+0xc0/0xf0 [ 28.203467] ? vsprintf+0x40/0x40 [ 28.206907] ? ns_capable_common+0xcf/0x160 [ 28.211212] ? set_blocksize+0x1f1/0x260 [ 28.215260] gfs2_mount+0x587/0x6e0 [ 28.218869] ? gfs2_mount+0x587/0x6e0 [ 28.222651] ? fill_super+0x1d70/0x1d70 [ 28.226617] mount_fs+0x66/0x2d0 [ 28.229966] vfs_kern_mount.part.26+0xc6/0x4a0 [ 28.234529] ? may_umount+0xa0/0xa0 [ 28.238133] ? _raw_read_unlock+0x22/0x30 [ 28.242260] ? __get_fs_type+0x8a/0xc0 [ 28.246130] do_mount+0xea4/0x2bb0 [ 28.249654] ? copy_mount_string+0x40/0x40 [ 28.253872] ? rcu_pm_notify+0xc0/0xc0 [ 28.257743] ? copy_mount_options+0x5f/0x2e0 [ 28.262131] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.267128] ? kmem_cache_alloc_trace+0x459/0x740 [ 28.271954] ? kasan_check_write+0x14/0x20 [ 28.276172] ? _copy_from_user+0x99/0x110 [ 28.280300] ? copy_mount_options+0x1f7/0x2e0 [ 28.284777] SyS_mount+0xab/0x120 [ 28.288208] ? copy_mnt_ns+0xb30/0xb30 [ 28.292077] do_syscall_64+0x281/0x940 [ 28.295947] ? vmalloc_sync_all+0x30/0x30 [ 28.300072] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.304817] ? syscall_return_slowpath+0x550/0x550 [ 28.309724] ? syscall_return_slowpath+0x2ac/0x550 [ 28.314634] ? prepare_exit_to_usermode+0x350/0x350 [ 28.319633] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 28.324978] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.329805] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 28.334979] RIP: 0033:0x4430ba [ 28.338148] RSP: 002b:00007ffccbb80ca8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 28.345833] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba [ 28.353080] RDX: 00000000200001c0 RSI: 0000000020000200 RDI: 00007ffccbb80cc0 [ 28.360328] RBP: 00000000006cb018 R08: 0000000020000500 R09: 000000000000000a [ 28.367575] R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f [ 28.374825] R13: 746f72706b636f6c R14: 0031656c69662f2e R15: 0000000000000004 [ 28.382090] CPU: 1 PID: 4432 Comm: syzkaller661252 Not tainted 4.16.0+ #10 [ 28.382267] ------------[ cut here ]------------ [ 28.389085] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.389088] Call Trace: [ 28.389100] dump_stack+0x194/0x24d [ 28.389110] ? arch_local_irq_restore+0x53/0x53 [ 28.393848] kobject_add_internal failed for ! with -EEXIST, don't try to register things with the same name in the same directory. [ 28.403166] ? vsnprintf+0x1ed/0x1900 [ 28.403177] panic+0x1e4/0x41c [ 28.403185] ? refcount_error_report+0x214/0x214 [ 28.405960] WARNING: CPU: 0 PID: 4433 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 [ 28.409339] ? show_regs_print_info+0x18/0x18 [ 28.413972] Modules linked in: [ 28.425821] ? vprintk_emit+0xa5f/0xb90 [ 28.429590] CPU: 0 PID: 4433 Comm: syzkaller661252 Not tainted 4.16.0+ #10 [ 28.432751] ? __warn+0x1c1/0x200 [ 28.432760] ? kobject_add_internal+0x8d4/0xbc0 [ 28.437480] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.437488] RIP: 0010:kobject_add_internal+0x8d4/0xbc0 [ 28.445945] __warn+0x1dc/0x200 [ 28.450404] RSP: 0018:ffff8801ad6574a0 EFLAGS: 00010282 [ 28.453572] ? kobject_add_internal+0x8d4/0xbc0 [ 28.457517] RAX: dffffc0000000008 RBX: ffff8801d9ba5190 RCX: ffffffff815b193e [ 28.464500] report_bug+0x1f4/0x2b0 [ 28.467917] RDX: 0000000000000000 RSI: 1ffff10035acae44 RDI: 1ffff10035acae19 [ 28.467923] RBP: ffff8801ad657598 R08: 1ffff10035acaddb R09: 0000000000000001 [ 28.472564] fixup_bug.part.10+0x37/0x80 [ 28.481882] R10: ffff8801ad657260 R11: 0000000000000000 R12: 1ffff10035acae9a [ 28.481888] R13: 00000000ffffffef R14: ffff8801d39b9848 R15: 1ffff10035acae9e [ 28.487135] do_error_trap+0x2d7/0x3e0 [ 28.490469] FS: 00000000025b9880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 28.495802] ? vprintk_default+0x28/0x30 [ 28.500436] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.500442] CR2: 00007fe1884cdaf0 CR3: 00000001ad5c2004 CR4: 00000000001606f0 [ 28.507686] ? math_error+0x400/0x400 [ 28.511280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.518523] ? printk+0xaa/0xca [ 28.525760] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.525764] Call Trace: [ 28.529796] ? show_regs_print_info+0x18/0x18 [ 28.537043] ? kobj_ns_type_registered+0x50/0x50 [ 28.544289] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.548147] ? kfree_const+0x31/0x40 [ 28.556344] do_invalid_op+0x1b/0x20 [ 28.560376] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.566228] invalid_op+0x1b/0x40 [ 28.573473] ? kfree+0x1f6/0x260 [ 28.577246] RIP: 0010:kobject_add_internal+0x8d4/0xbc0 [ 28.584488] ? kfree_const+0x36/0x40 [ 28.587731] RSP: 0018:ffff8801ad5174a0 EFLAGS: 00010282 [ 28.587741] RAX: dffffc0000000008 RBX: ffff8801ad9d1150 RCX: ffffffff815b193e [ 28.594986] kobject_init_and_add+0xf9/0x150 [ 28.597535] RDX: 0000000000000000 RSI: 1ffff10035aa2e44 RDI: 1ffff10035aa2e19 [ 28.597541] RBP: ffff8801ad517598 R08: 1ffff10035aa2ddb R09: 0000000000000000 [ 28.602008] ? kset_create_and_add+0x170/0x170 [ 28.606729] R10: ffff8801ad517260 R11: 0000000000000000 R12: 1ffff10035aa2e9a [ 28.606733] R13: 00000000ffffffef R14: ffff8801d39b9848 R15: 1ffff10035aa2e9e [ 28.606746] ? vprintk_func+0x5e/0xc0 [ 28.611555] ? vsnprintf+0x1ed/0x1900 [ 28.615246] ? kobj_ns_type_registered+0x50/0x50 [ 28.618932] gfs2_sys_fs_add+0x1ff/0x580 [ 28.623912] ? kfree_const+0x31/0x40 [ 28.627334] ? recover_store+0x160/0x160 [ 28.630669] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.635915] ? snprintf+0xc0/0xf0 [ 28.639596] ? kfree+0x1f6/0x260 [ 28.644931] ? vsprintf+0x40/0x40 [ 28.652177] ? kfree_const+0x36/0x40 [ 28.656554] ? set_blocksize+0x1f1/0x260 [ 28.663802] kobject_init_and_add+0xf9/0x150 [ 28.671044] ? memcpy+0x45/0x50 [ 28.675597] ? kset_create_and_add+0x170/0x170 [ 28.682840] fill_super+0x86f/0x1d70 [ 28.690081] ? vsnprintf+0x1ed/0x1900 [ 28.693849] ? vsnprintf+0x1ed/0x1900 [ 28.697625] gfs2_sys_fs_add+0x1ff/0x580 [ 28.702350] ? gfs2_online_uevent+0x2a0/0x2a0 [ 28.706379] ? recover_store+0x160/0x160 [ 28.710062] ? memcpy+0x45/0x50 [ 28.714092] ? snprintf+0xc0/0xf0 [ 28.719081] ? match_strlcpy+0xbc/0xf0 [ 28.722501] ? vsprintf+0x40/0x40 [ 28.725839] ? snprintf+0xc0/0xf0 [ 28.729262] ? set_blocksize+0x1f1/0x260 [ 28.732946] ? vsprintf+0x40/0x40 [ 28.736977] ? memcpy+0x45/0x50 [ 28.741355] ? ns_capable_common+0xcf/0x160 [ 28.744608] fill_super+0x86f/0x1d70 [ 28.749157] ? set_blocksize+0x1f1/0x260 [ 28.752845] ? vsnprintf+0x1ed/0x1900 [ 28.756617] gfs2_mount+0x587/0x6e0 [ 28.760389] ? gfs2_online_uevent+0x2a0/0x2a0 [ 28.764418] ? gfs2_mount+0x587/0x6e0 [ 28.768883] ? memcpy+0x45/0x50 [ 28.772912] ? fill_super+0x1d70/0x1d70 [ 28.776160] ? match_strlcpy+0xbc/0xf0 [ 28.779598] mount_fs+0x66/0x2d0 [ 28.783443] ? snprintf+0xc0/0xf0 [ 28.786873] vfs_kern_mount.part.26+0xc6/0x4a0 [ 28.790290] ? vsprintf+0x40/0x40 [ 28.794321] ? may_umount+0xa0/0xa0 [ 28.797743] ? ns_capable_common+0xcf/0x160 [ 28.800993] ? _raw_read_unlock+0x22/0x30 [ 28.805282] ? set_blocksize+0x1f1/0x260 [ 28.808968] ? __get_fs_type+0x8a/0xc0 [ 28.813015] gfs2_mount+0x587/0x6e0 [ 28.816789] do_mount+0xea4/0x2bb0 [ 28.820384] ? gfs2_mount+0x587/0x6e0 [ 28.824851] ? copy_mount_string+0x40/0x40 [ 28.828620] ? fill_super+0x1d70/0x1d70 [ 28.831870] ? rcu_pm_notify+0xc0/0xc0 [ 28.835829] mount_fs+0x66/0x2d0 [ 28.839678] ? copy_mount_options+0x5f/0x2e0 [ 28.843013] vfs_kern_mount.part.26+0xc6/0x4a0 [ 28.846433] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.850985] ? may_umount+0xa0/0xa0 [ 28.854407] ? kmem_cache_alloc_trace+0x459/0x740 [ 28.858002] ? _raw_read_unlock+0x22/0x30 [ 28.862292] ? kasan_check_write+0x14/0x20 [ 28.866411] ? __get_fs_type+0x8a/0xc0 [ 28.870444] ? _copy_from_user+0x99/0x110 [ 28.874299] do_mount+0xea4/0x2bb0 [ 28.877897] ? copy_mount_options+0x1f7/0x2e0 [ 28.881409] ? copy_mount_string+0x40/0x40 [ 28.885176] SyS_mount+0xab/0x120 [ 28.889380] ? rcu_pm_notify+0xc0/0xc0 [ 28.893320] ? copy_mnt_ns+0xb30/0xb30 [ 28.897179] ? copy_mount_options+0x5f/0x2e0 [ 28.900516] do_syscall_64+0x281/0x940 [ 28.904891] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.909444] ? vmalloc_sync_all+0x30/0x30 [ 28.914428] ? kmem_cache_alloc_trace+0x459/0x740 [ 28.918026] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.922835] ? kasan_check_write+0x14/0x20 [ 28.926951] ? syscall_return_slowpath+0x550/0x550 [ 28.931152] ? _copy_from_user+0x99/0x110 [ 28.935008] ? syscall_return_slowpath+0x2ac/0x550 [ 28.939126] ? copy_mount_options+0x1f7/0x2e0 [ 28.942634] ? prepare_exit_to_usermode+0x350/0x350 [ 28.947096] SyS_mount+0xab/0x120 [ 28.951301] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 28.954720] ? copy_mnt_ns+0xb30/0xb30 [ 28.958577] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.962430] do_syscall_64+0x281/0x940 [ 28.966812] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 28.970666] ? vmalloc_sync_all+0x30/0x30 [ 28.975649] RIP: 0033:0x4430ba [ 28.979765] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.984569] RSP: 002b:00007ffccbb80ca8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 28.989300] ? syscall_return_slowpath+0x550/0x550 [ 28.993498] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba [ 28.993504] RDX: 00000000200001c0 RSI: 0000000020000200 RDI: 00007ffccbb80cc0 [ 28.998403] ? syscall_return_slowpath+0x2ac/0x550 [ 29.002519] RBP: 00000000006cb018 R08: 0000000020000500 R09: 000000000000000a [ 29.002525] R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f [ 29.007442] ? prepare_exit_to_usermode+0x350/0x350 [ 29.011893] R13: 746f72706b636f6c R14: 0031656c69662f2e R15: 0000000000000004 [ 29.011906] Code: [ 29.016891] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.020309] 00 [ 29.025646] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.029496] 00 [ 29.034317] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.038164] 00 [ 29.043323] RIP: 0033:0x4430ba [ 29.047435] 00 [ 29.050593] RSP: 002b:00007ffccbb80ca8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 29.055319] fc [ 29.062993] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba [ 29.062998] RDX: 00000000200001c0 RSI: 0000000020000200 RDI: 00007ffccbb80cc0 [ 29.067896] ff [ 29.075134] RBP: 00000000006cb018 R08: 0000000020000500 R09: 000000000000000a [ 29.075140] R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f [ 29.082378] df [ 29.087277] R13: 746f72706b636f6c R14: 0031656c69662f2e R15: 0000000000000004 [ 29.094516] 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 48 8b 13 48 c7 c6 00 24 d6 87 48 c7 c7 60 21 d6 87 e8 4c b3 62 fa <0f> 0b e9 1d fb ff ff e8 30 9e 92 fa 0f 0b e9 29 fe ff ff e8 24 [ 29.208885] ---[ end trace f7cbae6a36c3e74e ]--- [ 29.214051] Dumping ftrace buffer: [ 29.217780] (ftrace buffer empty) [ 29.221464] Kernel Offset: disabled [ 29.225065] Rebooting in 86400 seconds..