[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.197' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.974079] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 27.983779] INFO: trying to register non-static key. [ 27.988970] the code is fine but needs lockdep annotation. [ 27.994576] turning off the locking correctness validator. [ 28.000174] CPU: 1 PID: 7968 Comm: syz-executor339 Not tainted 4.14.295-syzkaller #0 [ 28.008023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.017349] Call Trace: [ 28.019917] dump_stack+0x1b2/0x281 [ 28.023521] register_lock_class+0x389/0x1180 [ 28.027990] ? static_obj+0x50/0x50 [ 28.031588] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.036922] ? save_trace+0xd6/0x290 [ 28.040608] __lock_acquire+0x167/0x3f20 [ 28.044646] ? cache_alloc_refill+0x2fa/0x350 [ 28.049113] ? trace_hardirqs_on+0x10/0x10 [ 28.053319] ? trace_hardirqs_on+0x10/0x10 [ 28.057527] ? lock_downgrade+0x740/0x740 [ 28.061646] ? alloc_buffer_head+0x20/0x110 [ 28.065944] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.071365] lock_acquire+0x170/0x3f0 [ 28.075138] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.080219] down_read+0x36/0x80 [ 28.083558] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.088632] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.093536] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.097832] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.103518] ? nilfs_mdt_write_page+0x250/0x250 [ 28.108159] nilfs_mdt_read_block+0x7c/0x320 [ 28.112539] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.118405] ? __lock_acquire+0x2190/0x3f20 [ 28.122702] nilfs_mdt_get_block+0xc7/0xb90 [ 28.126997] ? nilfs_mdt_read_block+0x320/0x320 [ 28.133118] ? lock_downgrade+0x740/0x740 [ 28.137240] nilfs_palloc_get_block+0xb2/0x250 [ 28.141802] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.146966] ? nilfs_iget+0x18e/0x810 [ 28.150740] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.155732] nilfs_iget+0x1c2/0x810 [ 28.159340] ? nilfs_iget_locked+0xb0/0xb0 [ 28.163545] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.168452] ? nilfs_detach_log_writer+0x980/0x980 [ 28.173355] ? wait_woken+0x230/0x230 [ 28.177128] nilfs_get_root_dentry+0x24/0x1f0 [ 28.181593] nilfs_mount+0x984/0xd00 [ 28.185280] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.190185] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.195609] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.200597] ? alloc_pages_current+0x15d/0x260 [ 28.205153] ? __lockdep_init_map+0x100/0x560 [ 28.209639] mount_fs+0x92/0x2a0 [ 28.212984] vfs_kern_mount.part.0+0x5b/0x470 [ 28.217450] do_mount+0xe65/0x2a30 [ 28.220963] ? retint_kernel+0x2d/0x2d [ 28.224823] ? copy_mount_string+0x40/0x40 [ 28.229589] ? memset+0x20/0x40 [ 28.233253] ? copy_mount_options+0x1fa/0x2f0 [ 28.239543] ? copy_mnt_ns+0xa30/0xa30 [ 28.243403] SyS_mount+0xa8/0x120 [ 28.246829] ? copy_mnt_ns+0xa30/0xa30 [ 28.250690] do_syscall_64+0x1d5/0x640 [ 28.254552] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.259715] RIP: 0033:0x7f453a57471a [ 28.263399] RSP: 002b:00007fff4d387328 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.271077] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f453a57471a [ 28.278320] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff4d387340 [ 28.285560] RBP: 00007fff4d387340 R08: 00007fff4d387380 R09: 0000555555f182c0 [ 28.292801] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 28.300044] R13: 00007fff4d387380 R14: 0000000000000039 R15: 0000000020000758 [ 28.307584] kasan: CONFIG_KASAN_INLINE enabled [ 28.312333] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.319735] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.325952] Modules linked in: [ 28.329129] CPU: 1 PID: 7968 Comm: syz-executor339 Not tainted 4.14.295-syzkaller #0 [ 28.336982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.346311] task: ffff8880ac226500 task.stack: ffff888096d38000 [ 28.352347] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.358028] RSP: 0018:ffff888096d3f750 EFLAGS: 00010246 [ 28.363363] RAX: 0000000000000000 RBX: ffff88808df17098 RCX: 0000000000000000 [ 28.370609] RDX: dffffc0000000000 RSI: 1ffff11012da7e93 RDI: ffff88808df17158 [ 28.377856] RBP: ffff888096d3f818 R08: 0000000000000001 R09: 0000000000000000 [ 28.385098] R10: 0000000000000001 R11: ffff8880ac226500 R12: 0000000000000002 [ 28.392343] R13: 1ffff11012da7eeb R14: ffff88808df170d0 R15: 0000000000000001 [ 28.399585] FS: 0000555555f18300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.407892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.413745] CR2: 00007fff4d388000 CR3: 00000000abb16000 CR4: 00000000003406e0 [ 28.420993] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.428238] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.435479] Call Trace: [ 28.438044] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.442339] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.448022] ? nilfs_mdt_write_page+0x250/0x250 [ 28.452665] nilfs_mdt_read_block+0x7c/0x320 [ 28.457045] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.462906] ? __lock_acquire+0x2190/0x3f20 [ 28.467205] nilfs_mdt_get_block+0xc7/0xb90 [ 28.471503] ? nilfs_mdt_read_block+0x320/0x320 [ 28.476145] ? lock_downgrade+0x740/0x740 [ 28.480266] nilfs_palloc_get_block+0xb2/0x250 [ 28.484836] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.490011] ? nilfs_iget+0x18e/0x810 [ 28.493790] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.498781] nilfs_iget+0x1c2/0x810 [ 28.502379] ? nilfs_iget_locked+0xb0/0xb0 [ 28.506590] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.511514] ? nilfs_detach_log_writer+0x980/0x980 [ 28.516423] ? wait_woken+0x230/0x230 [ 28.520200] nilfs_get_root_dentry+0x24/0x1f0 [ 28.524671] nilfs_mount+0x984/0xd00 [ 28.528360] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.533265] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.538691] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.543683] ? alloc_pages_current+0x15d/0x260 [ 28.548240] ? __lockdep_init_map+0x100/0x560 [ 28.552710] mount_fs+0x92/0x2a0 [ 28.556051] vfs_kern_mount.part.0+0x5b/0x470 [ 28.560517] do_mount+0xe65/0x2a30 [ 28.564033] ? retint_kernel+0x2d/0x2d [ 28.567894] ? copy_mount_string+0x40/0x40 [ 28.572103] ? memset+0x20/0x40 [ 28.575357] ? copy_mount_options+0x1fa/0x2f0 [ 28.579825] ? copy_mnt_ns+0xa30/0xa30 [ 28.583686] SyS_mount+0xa8/0x120 [ 28.587112] ? copy_mnt_ns+0xa30/0xa30 [ 28.590974] do_syscall_64+0x1d5/0x640 [ 28.594838] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.600002] RIP: 0033:0x7f453a57471a [ 28.603688] RSP: 002b:00007fff4d387328 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.611375] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f453a57471a [ 28.618623] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff4d387340 [ 28.625869] RBP: 00007fff4d387340 R08: 00007fff4d387380 R09: 0000555555f182c0 [ 28.633117] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 28.640366] R13: 00007fff4d387380 R14: 0000000000000039 R15: 0000000020000758 [ 28.647616] 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 [ 28.666681] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888096d3f750 [ 28.674096] ---[ end trace 8e908f9fe576f9ea ]--- [ 28.678838] Kernel panic - not syncing: Fatal exception [ 28.684346] Kernel Offset: disabled [ 28.687955] Rebooting in 86400 seconds..