[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.636974] FAULT_INJECTION: forcing a failure. [ 46.636974] name failslab, interval 1, probability 0, space 0, times 1 [ 46.651593] CPU: 1 PID: 8131 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 46.659490] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.668846] Call Trace: [ 46.671441] dump_stack+0x1fc/0x2fe [ 46.675078] should_fail.cold+0xa/0x14 [ 46.678982] ? setup_fault_attr+0x200/0x200 [ 46.683318] __should_failslab+0x115/0x180 [ 46.684256] FAULT_INJECTION: forcing a failure. [ 46.684256] name failslab, interval 1, probability 0, space 0, times 1 [ 46.687551] should_failslab+0x5/0xf [ 46.702440] kmem_cache_alloc+0x3f/0x370 [ 46.706494] anon_vma_clone+0xe0/0x5e0 [ 46.710374] anon_vma_fork+0x82/0x630 [ 46.714160] ? dup_userfaultfd+0x157/0x6b0 [ 46.718381] ? kmem_cache_alloc+0x315/0x370 [ 46.722700] copy_process.part.0+0x360f/0x8200 [ 46.727285] ? __cleanup_sighand+0x60/0x60 [ 46.731514] ? __do_page_fault+0x6d1/0xd60 [ 46.735746] _do_fork+0x22f/0xf30 [ 46.739190] ? fork_idle+0x220/0x220 [ 46.742887] ? up_read+0x17/0x110 [ 46.746325] ? __do_page_fault+0x180/0xd60 [ 46.750564] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 46.755917] ? trace_hardirqs_off_caller+0x6e/0x210 [ 46.760920] ? do_syscall_64+0x21/0x620 [ 46.764974] do_syscall_64+0xf9/0x620 [ 46.768770] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.773955] RIP: 0033:0x443eca executing program executing program executing program [ 46.777137] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 [ 46.796019] RSP: 002b:00007ffc9b420d10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 46.803712] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443eca [ 46.810981] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 46.818233] RBP: 00007ffc9b420d30 R08: 0000000000000000 R09: 000000000142b880 [ 46.825486] R10: 000000000142bb50 R11: 0000000000000246 R12: 0000000000000000 [ 46.832739] R13: 00000000004027d0 R14: 0000000000000000 R15: 0000000000000000 [ 46.840013] CPU: 0 PID: 8133 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 46.847898] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.857248] Call Trace: [ 46.859846] dump_stack+0x1fc/0x2fe [ 46.863489] should_fail.cold+0xa/0x14 [ 46.867384] ? setup_fault_attr+0x200/0x200 [ 46.871710] ? lock_acquire+0x170/0x3c0 [ 46.875701] __should_failslab+0x115/0x180 [ 46.879941] should_failslab+0x5/0xf [ 46.883660] __kmalloc+0x2ab/0x3c0 [ 46.887204] ? ext4_mb_init+0x114/0x1790 [ 46.891278] ext4_mb_init+0x114/0x1790 [ 46.893800] FAULT_INJECTION: forcing a failure. [ 46.893800] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 46.895174] ? ext4_setup_super+0x5f3/0x9f0 [ 46.895195] ext4_fill_super+0x7308/0xc820 [ 46.895230] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 46.920637] ? snprintf+0xbb/0xf0 [ 46.924098] ? wait_for_completion_io+0x10/0x10 [ 46.928751] ? set_blocksize+0x163/0x3f0 [ 46.932804] mount_bdev+0x2fc/0x3b0 [ 46.936429] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 46.941519] mount_fs+0xa3/0x30c [ 46.944872] vfs_kern_mount.part.0+0x68/0x470 [ 46.949356] do_mount+0x113c/0x2f10 [ 46.952968] ? lock_acquire+0x170/0x3c0 [ 46.956927] ? check_preemption_disabled+0x41/0x280 [ 46.961930] ? copy_mount_string+0x40/0x40 [ 46.966149] ? copy_mount_options+0x59/0x380 [ 46.970559] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 46.975563] ? kmem_cache_alloc_trace+0x323/0x380 [ 46.980396] ? copy_mount_options+0x26f/0x380 [ 46.984876] ksys_mount+0xcf/0x130 [ 46.988403] __x64_sys_mount+0xba/0x150 [ 46.992360] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 46.996927] do_syscall_64+0xf9/0x620 [ 47.000716] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.005890] RIP: 0033:0x447eea [ 47.009085] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 47.027972] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 executing program executing program [ 47.035662] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 47.042924] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 47.050187] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 47.057439] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 47.064701] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 47.071982] CPU: 1 PID: 8144 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 47.079872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.080206] EXT4-fs (loop0): failed to initialize mballoc (-12) [ 47.089219] Call Trace: [ 47.089239] dump_stack+0x1fc/0x2fe [ 47.089258] should_fail.cold+0xa/0x14 [ 47.095472] EXT4-fs (loop0): mount failed [ 47.097871] ? check_preemption_disabled+0x41/0x280 [ 47.097887] ? setup_fault_attr+0x200/0x200 [ 47.118919] ? is_bpf_text_address+0xfc/0x1b0 [ 47.123429] __alloc_pages_nodemask+0x239/0x2890 [ 47.128190] ? __lock_acquire+0x6de/0x3ff0 [ 47.132433] ? kasan_kmalloc+0x139/0x160 [ 47.136486] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 47.141314] ? __do_tune_cpucache+0x161/0x210 [ 47.145803] ? enable_cpucache+0x50/0x130 [ 47.149936] ? __kmem_cache_create+0x1a7/0x260 [ 47.154511] ? mark_held_locks+0xf0/0xf0 [ 47.158578] ? ext4_mb_init+0xa3c/0x1790 [ 47.162623] ? ksys_mount+0xcf/0x130 [ 47.166319] ? __x64_sys_mount+0xba/0x150 [ 47.170475] ? do_syscall_64+0xf9/0x620 [ 47.174437] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.179795] ? lock_downgrade+0x720/0x720 [ 47.183924] ? ____cache_alloc_node+0x156/0x1d0 [ 47.188580] cache_grow_begin+0xa4/0x8a0 [ 47.192628] ____cache_alloc_node+0x170/0x1d0 [ 47.197108] kmem_cache_alloc_node_trace+0xec/0x3b0 [ 47.202109] setup_kmem_cache_node+0xb1/0x510 [ 47.206587] __do_tune_cpucache+0x161/0x210 [ 47.210894] enable_cpucache+0x50/0x130 [ 47.214861] __kmem_cache_create+0x1a7/0x260 [ 47.219267] create_cache+0xd1/0x1f0 [ 47.222974] kmem_cache_create_usercopy+0x1a6/0x240 [ 47.227975] kmem_cache_create+0xd/0x10 [ 47.231933] ext4_mb_init+0xa3c/0x1790 [ 47.235815] ? ext4_setup_super+0x5f3/0x9f0 [ 47.240131] ext4_fill_super+0x7308/0xc820 [ 47.244359] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 47.249448] ? snprintf+0xbb/0xf0 [ 47.252891] ? wait_for_completion_io+0x10/0x10 [ 47.257555] ? set_blocksize+0x163/0x3f0 [ 47.261601] mount_bdev+0x2fc/0x3b0 [ 47.265222] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 47.270307] mount_fs+0xa3/0x30c [ 47.273656] vfs_kern_mount.part.0+0x68/0x470 [ 47.278133] do_mount+0x113c/0x2f10 [ 47.281742] ? lock_acquire+0x170/0x3c0 [ 47.285697] ? check_preemption_disabled+0x41/0x280 [ 47.290702] ? copy_mount_string+0x40/0x40 [ 47.294922] ? copy_mount_options+0x59/0x380 [ 47.299314] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 47.304309] ? kmem_cache_alloc_trace+0x323/0x380 [ 47.309134] ? copy_mount_options+0x26f/0x380 [ 47.313612] ksys_mount+0xcf/0x130 [ 47.317137] __x64_sys_mount+0xba/0x150 [ 47.321106] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 47.325679] do_syscall_64+0xf9/0x620 [ 47.329463] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.334639] RIP: 0033:0x447eea [ 47.337826] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 47.356717] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 47.364414] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 47.371675] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 47.378926] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 executing program [ 47.386183] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 47.393443] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 47.402955] EXT4-fs (loop5): mounted filesystem without journal. Opts: noload,,errors=continue [ 47.433955] FAULT_INJECTION: forcing a failure. [ 47.433955] name failslab, interval 1, probability 0, space 0, times 0 [ 47.444771] FAULT_INJECTION: forcing a failure. [ 47.444771] name failslab, interval 1, probability 0, space 0, times 0 [ 47.446175] CPU: 0 PID: 8146 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 47.464268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.473609] Call Trace: [ 47.476187] dump_stack+0x1fc/0x2fe [ 47.479805] should_fail.cold+0xa/0x14 [ 47.483682] ? setup_fault_attr+0x200/0x200 [ 47.487989] ? lock_acquire+0x170/0x3c0 [ 47.491971] __should_failslab+0x115/0x180 [ 47.496216] should_failslab+0x5/0xf [ 47.499922] kmem_cache_alloc+0x277/0x370 [ 47.504066] __kernfs_new_node+0xd2/0x680 [ 47.508206] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 47.512954] ? mark_held_locks+0xf0/0xf0 [ 47.517015] ? kasan_kmalloc+0x139/0x160 [ 47.521066] ? should_fail+0x142/0x7b0 [ 47.524958] ? fs_reclaim_release+0xd0/0x110 [ 47.529354] kernfs_create_dir_ns+0x9e/0x230 [ 47.533769] sysfs_create_dir_ns+0x127/0x280 [ 47.538164] ? sysfs_create_mount_point+0xb0/0xb0 [ 47.543011] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 47.548027] ? check_preemption_disabled+0x41/0x280 [ 47.553052] kobject_add_internal+0x2a5/0x9c0 [ 47.557539] kobject_init_and_add+0x101/0x160 [ 47.562021] ? kobject_create_and_add+0xb0/0xb0 [ 47.566680] ? wait_for_completion_io+0x10/0x10 [ 47.571333] ? __lockdep_init_map+0x100/0x5a0 [ 47.575823] ? __lockdep_init_map+0x100/0x5a0 [ 47.580329] ext4_register_sysfs+0xb5/0x270 [ 47.584640] ext4_fill_super+0x7bcb/0xc820 [ 47.588880] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 47.593974] ? snprintf+0xbb/0xf0 [ 47.597424] ? wait_for_completion_io+0x10/0x10 [ 47.602082] ? set_blocksize+0x163/0x3f0 [ 47.606141] mount_bdev+0x2fc/0x3b0 [ 47.609775] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 47.614865] mount_fs+0xa3/0x30c [ 47.618226] vfs_kern_mount.part.0+0x68/0x470 [ 47.622716] do_mount+0x113c/0x2f10 [ 47.626338] ? lock_acquire+0x170/0x3c0 [ 47.630297] ? check_preemption_disabled+0x41/0x280 [ 47.635299] ? copy_mount_string+0x40/0x40 [ 47.639524] ? copy_mount_options+0x59/0x380 [ 47.644046] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 47.649068] ? kmem_cache_alloc_trace+0x323/0x380 [ 47.653928] ? copy_mount_options+0x26f/0x380 [ 47.658447] ksys_mount+0xcf/0x130 [ 47.661989] __x64_sys_mount+0xba/0x150 [ 47.665955] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 47.670536] do_syscall_64+0xf9/0x620 [ 47.674336] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.679529] RIP: 0033:0x447eea [ 47.682713] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 47.701720] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 47.709427] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 47.716689] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 47.724018] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 47.731273] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 47.738529] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 47.745805] CPU: 1 PID: 8145 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 47.753695] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.763034] Call Trace: [ 47.765612] dump_stack+0x1fc/0x2fe [ 47.769249] should_fail.cold+0xa/0x14 [ 47.773123] ? setup_fault_attr+0x200/0x200 [ 47.777428] ? lock_acquire+0x170/0x3c0 [ 47.781393] __should_failslab+0x115/0x180 [ 47.785620] should_failslab+0x5/0xf [ 47.789314] __kmalloc_track_caller+0x2a6/0x3c0 [ 47.793967] ? kstrdup_const+0x53/0x80 [ 47.797838] kstrdup+0x36/0x70 [ 47.801012] kstrdup_const+0x53/0x80 [ 47.804711] kvasprintf_const+0x108/0x190 [ 47.808842] kobject_set_name_vargs+0x56/0x150 [ 47.813407] kobject_init_and_add+0xc9/0x160 [ 47.817800] ? kobject_create_and_add+0xb0/0xb0 [ 47.822456] ? wait_for_completion_io+0x10/0x10 [ 47.827107] ? __lockdep_init_map+0x100/0x5a0 [ 47.831589] ? __lockdep_init_map+0x100/0x5a0 [ 47.836068] ext4_register_sysfs+0xb5/0x270 [ 47.840375] ext4_fill_super+0x7bcb/0xc820 [ 47.844610] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 47.849698] ? snprintf+0xbb/0xf0 [ 47.853154] ? wait_for_completion_io+0x10/0x10 [ 47.857817] ? set_blocksize+0x163/0x3f0 [ 47.861869] mount_bdev+0x2fc/0x3b0 [ 47.865478] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 47.870565] mount_fs+0xa3/0x30c [ 47.873918] vfs_kern_mount.part.0+0x68/0x470 [ 47.878399] do_mount+0x113c/0x2f10 [ 47.882010] ? lock_acquire+0x170/0x3c0 [ 47.885967] ? check_preemption_disabled+0x41/0x280 [ 47.890967] ? copy_mount_string+0x40/0x40 [ 47.895196] ? copy_mount_options+0x59/0x380 [ 47.899588] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 47.904587] ? kmem_cache_alloc_trace+0x323/0x380 [ 47.909416] ? copy_mount_options+0x26f/0x380 [ 47.913897] ksys_mount+0xcf/0x130 [ 47.917423] __x64_sys_mount+0xba/0x150 [ 47.921394] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 47.925959] do_syscall_64+0xf9/0x620 [ 47.929744] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.934915] RIP: 0033:0x447eea [ 47.938092] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 47.957060] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 47.964762] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 47.972014] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 47.979268] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 47.986518] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 47.993768] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 48.001963] kobject_add_internal failed for loop1 (error: -12 parent: ext4) [ 48.009456] EXT4-fs (loop1): mount failed [ 48.019351] kobject: can not set name properly! [ 48.024455] FAULT_INJECTION: forcing a failure. [ 48.024455] name failslab, interval 1, probability 0, space 0, times 0 [ 48.036728] EXT4-fs (loop3): mount failed [ 48.041165] CPU: 0 PID: 8152 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 48.043205] FAULT_INJECTION: forcing a failure. [ 48.043205] name failslab, interval 1, probability 0, space 0, times 0 [ 48.049040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.049045] Call Trace: [ 48.049062] dump_stack+0x1fc/0x2fe [ 48.049082] should_fail.cold+0xa/0x14 [ 48.079639] ? setup_fault_attr+0x200/0x200 [ 48.083956] ? lock_acquire+0x170/0x3c0 [ 48.087958] __should_failslab+0x115/0x180 [ 48.092192] should_failslab+0x5/0xf [ 48.095902] kmem_cache_alloc+0x277/0x370 [ 48.100043] __kernfs_new_node+0xd2/0x680 [ 48.104181] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 48.108930] ? __mutex_unlock_slowpath+0xea/0x610 [ 48.113772] ? wait_for_completion_io+0x10/0x10 [ 48.118442] ? kernfs_next_descendant_post+0x19c/0x290 [ 48.123710] kernfs_new_node+0x92/0x120 [ 48.127673] __kernfs_create_file+0x51/0x33f [ 48.132072] sysfs_add_file_mode_ns+0x226/0x540 [ 48.136735] sysfs_create_file_ns+0x131/0x1b0 [ 48.141227] ? sysfs_add_file_mode_ns+0x540/0x540 [ 48.146080] ? sysfs_create_mount_point+0xb0/0xb0 [ 48.150911] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 48.155921] kobject_add_internal+0x4f0/0x9c0 [ 48.160409] kobject_init_and_add+0x101/0x160 [ 48.164896] ? kobject_create_and_add+0xb0/0xb0 [ 48.169572] ? wait_for_completion_io+0x10/0x10 [ 48.174227] ? __lockdep_init_map+0x100/0x5a0 [ 48.178708] ? __lockdep_init_map+0x100/0x5a0 [ 48.183367] ext4_register_sysfs+0xb5/0x270 [ 48.187682] ext4_fill_super+0x7bcb/0xc820 [ 48.191921] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 48.197014] ? snprintf+0xbb/0xf0 [ 48.200463] ? wait_for_completion_io+0x10/0x10 [ 48.205124] ? set_blocksize+0x163/0x3f0 [ 48.209195] mount_bdev+0x2fc/0x3b0 [ 48.212822] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 48.217922] mount_fs+0xa3/0x30c [ 48.221307] vfs_kern_mount.part.0+0x68/0x470 [ 48.225813] do_mount+0x113c/0x2f10 [ 48.229435] ? rcu_nmi_exit+0xb3/0x180 [ 48.233335] ? retint_kernel+0x2d/0x2d [ 48.237213] ? copy_mount_string+0x40/0x40 [ 48.241435] ? copy_mount_options+0x1f9/0x380 [ 48.245932] ? write_comp_data+0xf/0x70 [ 48.249910] ? copy_mount_options+0x26f/0x380 [ 48.254400] ksys_mount+0xcf/0x130 [ 48.257933] __x64_sys_mount+0xba/0x150 [ 48.261900] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 48.266469] do_syscall_64+0xf9/0x620 [ 48.270286] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.275462] RIP: 0033:0x447eea [ 48.278641] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 48.297700] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 48.305393] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 48.312664] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 48.319917] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 48.327183] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 48.334449] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 48.341727] CPU: 1 PID: 8153 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 48.349610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.358945] Call Trace: [ 48.361518] dump_stack+0x1fc/0x2fe [ 48.365140] should_fail.cold+0xa/0x14 [ 48.369013] ? setup_fault_attr+0x200/0x200 [ 48.373317] ? lock_acquire+0x170/0x3c0 [ 48.377301] __should_failslab+0x115/0x180 [ 48.381519] should_failslab+0x5/0xf [ 48.385214] __kmalloc_track_caller+0x2a6/0x3c0 [ 48.389863] ? kstrdup_const+0x53/0x80 [ 48.393731] ? kstrdup+0x36/0x70 [ 48.397079] kstrdup+0x36/0x70 [ 48.400267] kstrdup_const+0x53/0x80 [ 48.403975] __kernfs_new_node+0x9b/0x680 [ 48.408119] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 48.412858] ? mark_held_locks+0xf0/0xf0 [ 48.416917] ? kasan_kmalloc+0x139/0x160 [ 48.420982] ? should_fail+0x142/0x7b0 [ 48.424863] ? fs_reclaim_release+0xd0/0x110 [ 48.429256] kernfs_create_dir_ns+0x9e/0x230 [ 48.433664] sysfs_create_dir_ns+0x127/0x280 [ 48.438054] ? sysfs_create_mount_point+0xb0/0xb0 [ 48.442879] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 48.447875] ? check_preemption_disabled+0x41/0x280 [ 48.452881] kobject_add_internal+0x2a5/0x9c0 [ 48.457362] kobject_init_and_add+0x101/0x160 [ 48.461842] ? kobject_create_and_add+0xb0/0xb0 [ 48.466495] ? wait_for_completion_io+0x10/0x10 [ 48.471159] ? __lockdep_init_map+0x100/0x5a0 [ 48.475646] ? __lockdep_init_map+0x100/0x5a0 [ 48.480141] ext4_register_sysfs+0xb5/0x270 [ 48.484565] ext4_fill_super+0x7bcb/0xc820 [ 48.488822] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 48.493922] ? snprintf+0xbb/0xf0 [ 48.497368] ? wait_for_completion_io+0x10/0x10 [ 48.502021] ? set_blocksize+0x163/0x3f0 [ 48.506069] mount_bdev+0x2fc/0x3b0 [ 48.509681] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 48.514776] mount_fs+0xa3/0x30c [ 48.518132] vfs_kern_mount.part.0+0x68/0x470 [ 48.522612] do_mount+0x113c/0x2f10 [ 48.526222] ? lock_acquire+0x170/0x3c0 [ 48.530178] ? check_preemption_disabled+0x41/0x280 [ 48.535177] ? copy_mount_string+0x40/0x40 [ 48.539393] ? copy_mount_options+0x59/0x380 [ 48.543788] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 48.548790] ? kmem_cache_alloc_trace+0x323/0x380 [ 48.553629] ? copy_mount_options+0x26f/0x380 [ 48.558108] ksys_mount+0xcf/0x130 [ 48.561632] __x64_sys_mount+0xba/0x150 [ 48.565591] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 48.570154] do_syscall_64+0xf9/0x620 [ 48.573949] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.579121] RIP: 0033:0x447eea executing program [ 48.582300] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 48.601196] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 48.608898] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 48.616150] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 48.623402] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 48.630668] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 executing program executing program executing program executing program executing program [ 48.637933] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 48.655491] kobject_add_internal failed for loop2 (error: -12 parent: ext4) [ 48.669083] EXT4-fs (loop2): mount failed executing program executing program executing program executing program [ 48.709182] kobject_add_internal failed for loop4 (error: -12 parent: ext4) [ 48.716724] EXT4-fs (loop4): mount failed [ 48.740147] FAULT_INJECTION: forcing a failure. [ 48.740147] name failslab, interval 1, probability 0, space 0, times 0 [ 48.752613] FAULT_INJECTION: forcing a failure. [ 48.752613] name failslab, interval 1, probability 0, space 0, times 0 [ 48.755847] FAULT_INJECTION: forcing a failure. [ 48.755847] name failslab, interval 1, probability 0, space 0, times 0 [ 48.770212] CPU: 0 PID: 8187 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 48.782961] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.792310] Call Trace: [ 48.794888] dump_stack+0x1fc/0x2fe [ 48.798503] should_fail.cold+0xa/0x14 [ 48.802378] ? setup_fault_attr+0x200/0x200 [ 48.806717] ? lock_acquire+0x170/0x3c0 [ 48.810693] __should_failslab+0x115/0x180 [ 48.814918] should_failslab+0x5/0xf [ 48.818619] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 48.823706] __kmalloc_node+0x38/0x70 [ 48.827492] kvmalloc_node+0x61/0xf0 [ 48.831211] ext4_alloc_flex_bg_array+0x1b8/0x620 [ 48.836043] ext4_fill_super+0xbddf/0xc820 [ 48.840277] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 48.845386] ? snprintf+0xbb/0xf0 [ 48.848915] ? wait_for_completion_io+0x10/0x10 [ 48.853579] ? set_blocksize+0x163/0x3f0 [ 48.857639] mount_bdev+0x2fc/0x3b0 [ 48.861250] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 48.866341] mount_fs+0xa3/0x30c [ 48.869709] vfs_kern_mount.part.0+0x68/0x470 [ 48.874200] do_mount+0x113c/0x2f10 [ 48.877816] ? do_raw_spin_unlock+0x171/0x230 [ 48.882295] ? check_preemption_disabled+0x41/0x280 [ 48.887296] ? copy_mount_string+0x40/0x40 [ 48.891513] ? copy_mount_options+0x59/0x380 [ 48.895904] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 48.900915] ? kmem_cache_alloc_trace+0x323/0x380 [ 48.905750] ? copy_mount_options+0x26f/0x380 [ 48.910241] ksys_mount+0xcf/0x130 [ 48.913780] __x64_sys_mount+0xba/0x150 [ 48.917737] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 48.922301] do_syscall_64+0xf9/0x620 [ 48.926089] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.931260] RIP: 0033:0x447eea [ 48.934434] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 executing program [ 48.953317] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 48.961006] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 48.968268] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 48.975520] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 48.982773] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 48.990036] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 48.999811] EXT4-fs (loop3): not enough memory for 1 flex groups [ 49.006040] EXT4-fs (loop3): unable to initialize flex_bg meta info! [ 49.014429] EXT4-fs (loop3): mount failed [ 49.018440] CPU: 0 PID: 8176 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 49.026460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.027904] FAULT_INJECTION: forcing a failure. [ 49.027904] name failslab, interval 1, probability 0, space 0, times 0 [ 49.035810] Call Trace: [ 49.035828] dump_stack+0x1fc/0x2fe [ 49.035846] should_fail.cold+0xa/0x14 [ 49.035861] ? setup_fault_attr+0x200/0x200 [ 49.035873] ? lock_acquire+0x170/0x3c0 [ 49.035899] __should_failslab+0x115/0x180 [ 49.069590] should_failslab+0x5/0xf [ 49.073291] kmem_cache_alloc+0x277/0x370 [ 49.077427] __kernfs_new_node+0xd2/0x680 [ 49.081564] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 49.086306] ? wake_up_q+0x93/0xe0 [ 49.089844] ? __mutex_unlock_slowpath+0x2be/0x610 [ 49.094771] ? wait_for_completion_io+0x10/0x10 [ 49.099432] ? kernfs_next_descendant_post+0x19c/0x290 [ 49.104699] kernfs_new_node+0x92/0x120 [ 49.108663] __kernfs_create_file+0x51/0x33f [ 49.113060] sysfs_add_file_mode_ns+0x226/0x540 [ 49.117721] sysfs_create_file_ns+0x131/0x1b0 [ 49.122206] ? sysfs_add_file_mode_ns+0x540/0x540 [ 49.127034] ? sysfs_create_mount_point+0xb0/0xb0 [ 49.131864] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.136873] kobject_add_internal+0x4f0/0x9c0 [ 49.141359] kobject_init_and_add+0x101/0x160 [ 49.145849] ? kobject_create_and_add+0xb0/0xb0 [ 49.149806] kasan: CONFIG_KASAN_INLINE enabled [ 49.150512] ? wait_for_completion_io+0x10/0x10 [ 49.150525] ? __lockdep_init_map+0x100/0x5a0 [ 49.150540] ? __lockdep_init_map+0x100/0x5a0 [ 49.155186] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.159843] ext4_register_sysfs+0xb5/0x270 [ 49.159859] ext4_fill_super+0x7bcb/0xc820 [ 49.159892] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 49.159908] ? snprintf+0xbb/0xf0 [ 49.189207] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 49.189820] ? wait_for_completion_io+0x10/0x10 [ 49.193250] CPU: 1 PID: 8187 Comm: syz-executor090 Not tainted 4.19.161-syzkaller #0 [ 49.199456] ? set_blocksize+0x163/0x3f0 [ 49.204094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.211973] mount_bdev+0x2fc/0x3b0 [ 49.216012] RIP: 0010:mount_fs+0xe0/0x30c [ 49.225342] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 49.228952] Code: 81 fc 00 f0 ff ff 0f 87 eb 01 00 00 e8 79 91 be ff 49 8d bc 24 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 01 00 00 4d 8b ac 24 c8 00 00 00 4d 85 ed 0f [ 49.233076] mount_fs+0xa3/0x30c [ 49.238160] RSP: 0018:ffff888096687ce0 EFLAGS: 00010202 [ 49.257057] vfs_kern_mount.part.0+0x68/0x470 [ 49.260411] RAX: dffffc0000000000 RBX: ffffffff8a0a8980 RCX: ffffffff81a63e65 [ 49.265768] do_mount+0x113c/0x2f10 [ 49.270236] RDX: 0000000000000019 RSI: ffffffff81a63e77 RDI: 00000000000000c8 [ 49.277500] ? lock_acquire+0x170/0x3c0 [ 49.281100] RBP: 0000000000000000 R08: 0000000000400000 R09: fffffffffffff000 [ 49.288349] ? check_preemption_disabled+0x41/0x280 [ 49.292293] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000 [ 49.299548] ? copy_mount_string+0x40/0x40 [ 49.304534] R13: ffff8880938aa6c0 R14: 0000000000000000 R15: ffff8880b2814000 [ 49.311790] ? copy_mount_options+0x59/0x380 [ 49.315997] FS: 000000000142b880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 49.323259] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.327640] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.335847] ? kmem_cache_alloc_trace+0x323/0x380 [ 49.340834] CR2: 00007f0f7783a008 CR3: 00000000b3c2c000 CR4: 00000000001406e0 [ 49.346699] ? copy_mount_options+0x26f/0x380 [ 49.351513] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.358764] ksys_mount+0xcf/0x130 [ 49.363230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.370482] __x64_sys_mount+0xba/0x150 [ 49.373988] Call Trace: [ 49.381250] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 49.385199] vfs_kern_mount.part.0+0x68/0x470 [ 49.387774] do_syscall_64+0xf9/0x620 [ 49.392326] do_mount+0x113c/0x2f10 [ 49.396798] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.400573] ? do_raw_spin_unlock+0x171/0x230 [ 49.404169] RIP: 0033:0x447eea [ 49.409336] ? check_preemption_disabled+0x41/0x280 [ 49.413805] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 49.416988] ? copy_mount_string+0x40/0x40 [ 49.421986] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 49.440873] ? copy_mount_options+0x59/0x380 [ 49.445077] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 49.452779] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.457168] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 49.464441] ? kmem_cache_alloc_trace+0x323/0x380 [ 49.469438] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 49.476724] ? copy_mount_options+0x26f/0x380 [ 49.481537] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 49.488808] ksys_mount+0xcf/0x130 [ 49.493290] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 49.500545] __x64_sys_mount+0xba/0x150 [ 49.507122] kobject_add_internal failed for loop1 (error: -12 parent: ext4) [ 49.511316] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 49.511328] do_syscall_64+0xf9/0x620 [ 49.511341] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.511351] RIP: 0033:0x447eea [ 49.511362] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 49.511368] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 49.511379] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 49.511386] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 49.511392] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 49.511399] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 49.511405] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 49.511415] Modules linked in: [ 49.513199] CPU: 1 PID: 8173 Comm: syz-executor090 Tainted: G D 4.19.161-syzkaller #0 [ 49.517010] EXT4-fs (loop1): mount failed [ 49.522886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.522891] Call Trace: [ 49.522909] dump_stack+0x1fc/0x2fe [ 49.522924] should_fail.cold+0xa/0x14 [ 49.522937] ? setup_fault_attr+0x200/0x200 [ 49.522947] ? lock_acquire+0x170/0x3c0 [ 49.522962] __should_failslab+0x115/0x180 [ 49.522974] should_failslab+0x5/0xf [ 49.522985] kmem_cache_alloc+0x277/0x370 [ 49.522998] __kernfs_new_node+0xd2/0x680 [ 49.523009] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 49.523020] ? wake_up_q+0x93/0xe0 [ 49.523033] ? __mutex_unlock_slowpath+0x2be/0x610 [ 49.523044] ? wait_for_completion_io+0x10/0x10 [ 49.523054] ? kernfs_next_descendant_post+0x19c/0x290 [ 49.523068] kernfs_new_node+0x92/0x120 [ 49.689922] __kernfs_create_file+0x51/0x33f [ 49.694330] sysfs_add_file_mode_ns+0x226/0x540 [ 49.699011] sysfs_create_file_ns+0x131/0x1b0 [ 49.703491] ? sysfs_add_file_mode_ns+0x540/0x540 [ 49.708316] ? sysfs_create_mount_point+0xb0/0xb0 [ 49.713141] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.718154] kobject_add_internal+0x4f0/0x9c0 [ 49.722637] kobject_init_and_add+0x101/0x160 [ 49.727119] ? kobject_create_and_add+0xb0/0xb0 [ 49.731778] ? wait_for_completion_io+0x10/0x10 [ 49.736437] ? __lockdep_init_map+0x100/0x5a0 [ 49.740915] ? __lockdep_init_map+0x100/0x5a0 [ 49.745397] ext4_register_sysfs+0xb5/0x270 [ 49.749704] ext4_fill_super+0x7bcb/0xc820 [ 49.754025] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 49.759110] ? snprintf+0xbb/0xf0 [ 49.762550] ? wait_for_completion_io+0x10/0x10 [ 49.767201] ? set_blocksize+0x163/0x3f0 [ 49.771251] mount_bdev+0x2fc/0x3b0 [ 49.774860] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 49.779947] mount_fs+0xa3/0x30c [ 49.783311] vfs_kern_mount.part.0+0x68/0x470 [ 49.787804] do_mount+0x113c/0x2f10 [ 49.791416] ? lock_acquire+0x170/0x3c0 [ 49.795374] ? check_preemption_disabled+0x41/0x280 [ 49.800374] ? copy_mount_string+0x40/0x40 [ 49.804592] ? copy_mount_options+0x59/0x380 [ 49.808984] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.813982] ? kmem_cache_alloc_trace+0x323/0x380 [ 49.818824] ? copy_mount_options+0x26f/0x380 [ 49.823306] ksys_mount+0xcf/0x130 [ 49.826834] __x64_sys_mount+0xba/0x150 [ 49.830803] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 49.835371] do_syscall_64+0xf9/0x620 [ 49.839160] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.844333] RIP: 0033:0x447eea [ 49.847510] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 49.866395] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 49.874097] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 49.881352] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 49.888617] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 49.895882] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 49.903139] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 49.910426] CPU: 0 PID: 8185 Comm: syz-executor090 Tainted: G D 4.19.161-syzkaller #0 [ 49.919706] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.929056] Call Trace: [ 49.931656] dump_stack+0x1fc/0x2fe [ 49.935288] should_fail.cold+0xa/0x14 [ 49.939180] ? setup_fault_attr+0x200/0x200 [ 49.943500] ? lock_acquire+0x170/0x3c0 [ 49.947478] __should_failslab+0x115/0x180 [ 49.951712] should_failslab+0x5/0xf [ 49.955422] kmem_cache_alloc+0x277/0x370 [ 49.959571] __kernfs_new_node+0xd2/0x680 executing program [ 49.963716] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 49.966332] ---[ end trace 67104e9470620285 ]--- [ 49.968467] ? mark_held_locks+0xf0/0xf0 [ 49.968483] ? kasan_kmalloc+0x139/0x160 [ 49.973315] RIP: 0010:mount_fs+0xe0/0x30c [ 49.977277] ? should_fail+0x142/0x7b0 [ 49.977293] ? fs_reclaim_release+0xd0/0x110 [ 49.983718] Code: 81 fc 00 f0 ff ff 0f 87 eb 01 00 00 e8 79 91 be ff 49 8d bc 24 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 01 00 00 4d 8b ac 24 c8 00 00 00 4d 85 ed 0f [ 49.985472] kernfs_create_dir_ns+0x9e/0x230 [ 49.985487] sysfs_create_dir_ns+0x127/0x280 [ 49.990434] RSP: 0018:ffff888096687ce0 EFLAGS: 00010202 [ 49.993741] ? sysfs_create_mount_point+0xb0/0xb0 [ 49.993757] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 50.014473] RAX: dffffc0000000000 RBX: ffffffff8a0a8980 RCX: ffffffff81a63e65 [ 50.017027] ? check_preemption_disabled+0x41/0x280 [ 50.017046] kobject_add_internal+0x2a5/0x9c0 [ 50.022508] RDX: 0000000000000019 RSI: ffffffff81a63e77 RDI: 00000000000000c8 [ 50.026774] kobject_init_and_add+0x101/0x160 [ 50.026789] ? kobject_create_and_add+0xb0/0xb0 [ 50.032673] RBP: 0000000000000000 R08: 0000000000400000 R09: fffffffffffff000 [ 50.036613] ? wait_for_completion_io+0x10/0x10 [ 50.036633] ? __lockdep_init_map+0x100/0x5a0 [ 50.045480] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000 [ 50.048876] ? __lockdep_init_map+0x100/0x5a0 [ 50.048891] ext4_register_sysfs+0xb5/0x270 [ 50.054586] kobject_add_internal failed for loop0 (error: -12 parent: ext4) [ 50.060652] ext4_fill_super+0x7bcb/0xc820 [ 50.060675] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 50.060687] ? snprintf+0xbb/0xf0 [ 50.060703] ? wait_for_completion_io+0x10/0x10 [ 50.065447] R13: ffff8880938aa6c0 R14: 0000000000000000 R15: ffff8880b2814000 [ 50.069823] ? set_blocksize+0x163/0x3f0 [ 50.069839] mount_bdev+0x2fc/0x3b0 [ 50.069851] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 50.069861] mount_fs+0xa3/0x30c [ 50.069874] vfs_kern_mount.part.0+0x68/0x470 [ 50.069889] do_mount+0x113c/0x2f10 [ 50.069904] ? lock_acquire+0x170/0x3c0 [ 50.069916] ? check_preemption_disabled+0x41/0x280 [ 50.069928] ? copy_mount_string+0x40/0x40 [ 50.069937] ? copy_mount_options+0x59/0x380 [ 50.069952] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 50.082233] EXT4-fs (loop0): mount failed [ 50.086336] ? kmem_cache_alloc_trace+0x323/0x380 [ 50.094508] FS: 000000000142b880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 50.098082] ? copy_mount_options+0x26f/0x380 [ 50.103206] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.109470] ksys_mount+0xcf/0x130 [ 50.109484] __x64_sys_mount+0xba/0x150 [ 50.109496] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 50.109506] do_syscall_64+0xf9/0x620 [ 50.109519] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.109527] RIP: 0033:0x447eea [ 50.109540] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ca a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 50.117130] CR2: 00007f0f7784d000 CR3: 00000000b3c2c000 CR4: 00000000001406e0 [ 50.118836] RSP: 002b:00007ffc9b420b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 50.118847] RAX: ffffffffffffffda RBX: 00007ffc9b420bf0 RCX: 0000000000447eea [ 50.118857] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffc9b420bb0 [ 50.123718] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.126946] RBP: 00007ffc9b420bb0 R08: 00007ffc9b420bf0 R09: 0000000000000000 [ 50.126953] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 50.126958] R13: 0000000000000006 R14: 0000000000000005 R15: 0000000000000005 [ 50.127673] kobject_add_internal failed for loop2 (error: -12 parent: ext4) [ 50.136129] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.138600] EXT4-fs (loop2): mount failed [ 50.142890] Kernel panic - not syncing: Fatal exception [ 50.334706] Kernel Offset: disabled [ 50.338330] Rebooting in 86400 seconds..