[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.97' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.998888] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.002962] INFO: trying to register non-static key. [ 28.013776] the code is fine but needs lockdep annotation. [ 28.019377] turning off the locking correctness validator. [ 28.024994] CPU: 1 PID: 8008 Comm: syz-executor151 Not tainted 4.14.295-syzkaller #0 [ 28.032847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.042179] Call Trace: [ 28.044747] dump_stack+0x1b2/0x281 [ 28.048352] register_lock_class+0x389/0x1180 [ 28.052824] ? static_obj+0x50/0x50 [ 28.056433] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.061770] ? save_trace+0xd6/0x290 [ 28.065456] __lock_acquire+0x167/0x3f20 [ 28.069494] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 28.074485] ? trace_hardirqs_on+0x10/0x10 [ 28.078693] ? trace_hardirqs_on+0x10/0x10 [ 28.082903] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.088328] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.093318] ? alloc_buffer_head+0x20/0x110 [ 28.097612] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.103034] lock_acquire+0x170/0x3f0 [ 28.106811] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.111903] down_read+0x36/0x80 [ 28.115255] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.120363] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.125277] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.129577] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.135260] ? nilfs_mdt_write_page+0x250/0x250 [ 28.139905] nilfs_mdt_read_block+0x7c/0x320 [ 28.144287] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.150148] ? __lock_acquire+0x2190/0x3f20 [ 28.154444] nilfs_mdt_get_block+0xc7/0xb90 [ 28.158740] ? nilfs_mdt_read_block+0x320/0x320 [ 28.163382] ? lock_downgrade+0x740/0x740 [ 28.167506] nilfs_palloc_get_block+0xb2/0x250 [ 28.172064] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.177226] ? nilfs_iget+0x18e/0x810 [ 28.181003] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.185993] nilfs_iget+0x1c2/0x810 [ 28.189594] ? nilfs_iget_locked+0xb0/0xb0 [ 28.193800] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.198702] ? nilfs_detach_log_writer+0x980/0x980 [ 28.203606] ? wait_woken+0x230/0x230 [ 28.207381] nilfs_get_root_dentry+0x24/0x1f0 [ 28.211859] nilfs_mount+0x984/0xd00 [ 28.215555] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.220459] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.225885] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.230874] ? alloc_pages_current+0x15d/0x260 [ 28.235430] ? __lockdep_init_map+0x100/0x560 [ 28.239898] mount_fs+0x92/0x2a0 [ 28.243238] vfs_kern_mount.part.0+0x5b/0x470 [ 28.247709] do_mount+0xe65/0x2a30 [ 28.251223] ? do_raw_spin_unlock+0x164/0x220 [ 28.255694] ? copy_mount_string+0x40/0x40 [ 28.259904] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.264891] ? copy_mnt_ns+0xa30/0xa30 [ 28.268752] ? copy_mount_options+0x1fa/0x2f0 [ 28.273226] ? copy_mnt_ns+0xa30/0xa30 [ 28.277089] SyS_mount+0xa8/0x120 [ 28.280515] ? copy_mnt_ns+0xa30/0xa30 [ 28.284376] do_syscall_64+0x1d5/0x640 [ 28.288248] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.293422] RIP: 0033:0x7f8cb72045ea [ 28.297113] RSP: 002b:00007ffcdaa3e858 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.304794] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8cb72045ea [ 28.312040] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcdaa3e870 [ 28.319281] RBP: 00007ffcdaa3e870 R08: 00007ffcdaa3e8b0 R09: 0000555555a0b2c0 [ 28.326524] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.333767] R13: 00007ffcdaa3e8b0 R14: 000000000000003b R15: 0000000020000788 [ 28.341608] kasan: CONFIG_KASAN_INLINE enabled [ 28.346183] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.353882] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.360114] Modules linked in: [ 28.363337] CPU: 1 PID: 8008 Comm: syz-executor151 Not tainted 4.14.295-syzkaller #0 [ 28.371194] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.380527] task: ffff8880912ce580 task.stack: ffff888095be0000 [ 28.386577] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.392261] RSP: 0018:ffff888095be7750 EFLAGS: 00010246 [ 28.397598] RAX: 0000000000000000 RBX: ffff88808df29098 RCX: 0000000000000000 [ 28.404849] RDX: dffffc0000000000 RSI: 1ffff11012b7ce93 RDI: ffff88808df29158 [ 28.412093] RBP: ffff888095be7818 R08: 0000000000000001 R09: 0000000000000000 [ 28.419335] R10: 0000000000000001 R11: ffff8880912ce580 R12: 0000000000000002 [ 28.426580] R13: 1ffff11012b7ceeb R14: ffff88808df290d0 R15: 0000000000000001 [ 28.433824] FS: 0000555555a0b300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.442024] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.447879] CR2: 000055e504c96a80 CR3: 00000000a1b92000 CR4: 00000000003406e0 [ 28.455124] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.462378] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.469629] Call Trace: [ 28.472201] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.476499] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.482187] ? nilfs_mdt_write_page+0x250/0x250 [ 28.486840] nilfs_mdt_read_block+0x7c/0x320 [ 28.491236] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.497106] ? __lock_acquire+0x2190/0x3f20 [ 28.501408] nilfs_mdt_get_block+0xc7/0xb90 [ 28.505710] ? nilfs_mdt_read_block+0x320/0x320 [ 28.510357] ? lock_downgrade+0x740/0x740 [ 28.514511] nilfs_palloc_get_block+0xb2/0x250 [ 28.519074] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.524237] ? nilfs_iget+0x18e/0x810 [ 28.528016] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.533037] nilfs_iget+0x1c2/0x810 [ 28.536659] ? nilfs_iget_locked+0xb0/0xb0 [ 28.540870] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.545773] ? nilfs_detach_log_writer+0x980/0x980 [ 28.550678] ? wait_woken+0x230/0x230 [ 28.554456] nilfs_get_root_dentry+0x24/0x1f0 [ 28.558928] nilfs_mount+0x984/0xd00 [ 28.562617] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.567523] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.572947] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.577939] ? alloc_pages_current+0x15d/0x260 [ 28.582495] ? __lockdep_init_map+0x100/0x560 [ 28.586964] mount_fs+0x92/0x2a0 [ 28.590306] vfs_kern_mount.part.0+0x5b/0x470 [ 28.594773] do_mount+0xe65/0x2a30 [ 28.598306] ? do_raw_spin_unlock+0x164/0x220 [ 28.602776] ? copy_mount_string+0x40/0x40 [ 28.606998] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.612001] ? copy_mnt_ns+0xa30/0xa30 [ 28.615877] ? copy_mount_options+0x1fa/0x2f0 [ 28.620344] ? copy_mnt_ns+0xa30/0xa30 [ 28.624203] SyS_mount+0xa8/0x120 [ 28.627637] ? copy_mnt_ns+0xa30/0xa30 [ 28.631502] do_syscall_64+0x1d5/0x640 [ 28.635366] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.640528] RIP: 0033:0x7f8cb72045ea [ 28.644212] RSP: 002b:00007ffcdaa3e858 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.651894] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8cb72045ea [ 28.659139] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcdaa3e870 [ 28.666383] RBP: 00007ffcdaa3e870 R08: 00007ffcdaa3e8b0 R09: 0000555555a0b2c0 [ 28.673626] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.680873] R13: 00007ffcdaa3e8b0 R14: 000000000000003b R15: 0000000020000788 [ 28.688118] Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 69 02 00 00 48 8b 83 c0 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 c1 e9 03 <80> 3c 11 00 0f 85 32 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 [ 28.707197] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888095be7750 [ 28.714806] ---[ end trace c3bac7ef49d63df1 ]--- [ 28.720096] Kernel panic - not syncing: Fatal exception [ 28.725611] Kernel Offset: disabled [ 28.729256] Rebooting in 86400 seconds..