[ 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 '10.128.10.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.472284] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.472334] INFO: trying to register non-static key. [ 28.482138] the code is fine but needs lockdep annotation. [ 28.492902] turning off the locking correctness validator. [ 28.498502] CPU: 1 PID: 7952 Comm: syz-executor197 Not tainted 4.14.295-syzkaller #0 [ 28.506363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.515828] Call Trace: [ 28.518401] dump_stack+0x1b2/0x281 [ 28.522005] register_lock_class+0x389/0x1180 [ 28.526475] ? static_obj+0x50/0x50 [ 28.530076] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.535413] ? save_trace+0xd6/0x290 [ 28.539107] __lock_acquire+0x167/0x3f20 [ 28.543147] ? cache_alloc_refill+0x2fa/0x350 [ 28.547618] ? trace_hardirqs_on+0x10/0x10 [ 28.551825] ? trace_hardirqs_on+0x10/0x10 [ 28.556033] ? lock_downgrade+0x740/0x740 [ 28.560162] ? alloc_buffer_head+0x20/0x110 [ 28.564544] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.570043] lock_acquire+0x170/0x3f0 [ 28.573832] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.578925] down_read+0x36/0x80 [ 28.582271] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.587347] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.592259] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.596558] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.602247] ? nilfs_mdt_write_page+0x250/0x250 [ 28.606890] nilfs_mdt_read_block+0x7c/0x320 [ 28.611286] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.617146] ? __lock_acquire+0x2190/0x3f20 [ 28.621440] nilfs_mdt_get_block+0xc7/0xb90 [ 28.625733] ? nilfs_mdt_read_block+0x320/0x320 [ 28.630377] ? lock_downgrade+0x740/0x740 [ 28.634498] nilfs_palloc_get_block+0xb2/0x250 [ 28.639059] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.644219] ? nilfs_iget+0x18e/0x810 [ 28.647994] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.652982] nilfs_iget+0x1c2/0x810 [ 28.656584] ? nilfs_iget_locked+0xb0/0xb0 [ 28.660788] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.665686] ? nilfs_detach_log_writer+0x980/0x980 [ 28.670587] ? wait_woken+0x230/0x230 [ 28.674362] nilfs_get_root_dentry+0x24/0x1f0 [ 28.678829] nilfs_mount+0x984/0xd00 [ 28.682525] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.687428] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.692850] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.697856] ? alloc_pages_current+0x15d/0x260 [ 28.702425] ? __lockdep_init_map+0x100/0x560 [ 28.706894] mount_fs+0x92/0x2a0 [ 28.710236] vfs_kern_mount.part.0+0x5b/0x470 [ 28.714706] do_mount+0xe65/0x2a30 [ 28.718221] ? retint_kernel+0x2d/0x2d [ 28.722082] ? copy_mount_string+0x40/0x40 [ 28.726290] ? memset+0x20/0x40 [ 28.729545] ? copy_mount_options+0x1fa/0x2f0 [ 28.734039] ? copy_mnt_ns+0xa30/0xa30 [ 28.737900] SyS_mount+0xa8/0x120 [ 28.741326] ? copy_mnt_ns+0xa30/0xa30 [ 28.745186] do_syscall_64+0x1d5/0x640 [ 28.749048] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.754217] RIP: 0033:0x7f2b8ec6261a [ 28.757898] RSP: 002b:00007fff7faa21b8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.765574] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2b8ec6261a [ 28.772815] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff7faa21d0 [ 28.780077] RBP: 00007fff7faa21d0 R08: 00007fff7faa2210 R09: 00005555560742c0 [ 28.787319] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.794563] R13: 00007fff7faa2210 R14: 0000000000000039 R15: 0000000020000758 [ 28.802137] kasan: CONFIG_KASAN_INLINE enabled [ 28.808274] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.815710] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.821927] Modules linked in: [ 28.825103] CPU: 1 PID: 7952 Comm: syz-executor197 Not tainted 4.14.295-syzkaller #0 [ 28.832963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.842380] task: ffff8880989b0340 task.stack: ffff888095d50000 [ 28.848412] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.854097] RSP: 0018:ffff888095d57750 EFLAGS: 00010246 [ 28.859435] RAX: 0000000000000000 RBX: ffff88808e37d098 RCX: 0000000000000000 [ 28.866678] RDX: dffffc0000000000 RSI: 1ffff11012baae93 RDI: ffff88808e37d158 [ 28.873920] RBP: ffff888095d57818 R08: 0000000000000001 R09: 0000000000000000 [ 28.881164] R10: 0000000000000001 R11: ffff8880989b0340 R12: 0000000000000002 [ 28.888406] R13: 1ffff11012baaeeb R14: ffff88808e37d0d0 R15: 0000000000000001 [ 28.895655] FS: 0000555556074300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.903866] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.909736] CR2: 00007fff7faa3000 CR3: 00000000aed36000 CR4: 00000000003406e0 [ 28.916983] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.924228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.931482] Call Trace: [ 28.934051] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.938347] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.944035] ? nilfs_mdt_write_page+0x250/0x250 [ 28.948680] nilfs_mdt_read_block+0x7c/0x320 [ 28.953062] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.958918] ? __lock_acquire+0x2190/0x3f20 [ 28.963212] nilfs_mdt_get_block+0xc7/0xb90 [ 28.967533] ? nilfs_mdt_read_block+0x320/0x320 [ 28.972172] ? lock_downgrade+0x740/0x740 [ 28.976295] nilfs_palloc_get_block+0xb2/0x250 [ 28.980850] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.986012] ? nilfs_iget+0x18e/0x810 [ 28.989787] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.994774] nilfs_iget+0x1c2/0x810 [ 28.998373] ? nilfs_iget_locked+0xb0/0xb0 [ 29.002598] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.007498] ? nilfs_detach_log_writer+0x980/0x980 [ 29.012404] ? wait_woken+0x230/0x230 [ 29.016180] nilfs_get_root_dentry+0x24/0x1f0 [ 29.020651] nilfs_mount+0x984/0xd00 [ 29.024337] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.029239] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.034665] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.039656] ? alloc_pages_current+0x15d/0x260 [ 29.044211] ? __lockdep_init_map+0x100/0x560 [ 29.048682] mount_fs+0x92/0x2a0 [ 29.052025] vfs_kern_mount.part.0+0x5b/0x470 [ 29.056495] do_mount+0xe65/0x2a30 [ 29.060022] ? retint_kernel+0x2d/0x2d [ 29.063891] ? copy_mount_string+0x40/0x40 [ 29.068097] ? memset+0x20/0x40 [ 29.071351] ? copy_mount_options+0x1fa/0x2f0 [ 29.075818] ? copy_mnt_ns+0xa30/0xa30 [ 29.079687] SyS_mount+0xa8/0x120 [ 29.083200] ? copy_mnt_ns+0xa30/0xa30 [ 29.087058] do_syscall_64+0x1d5/0x640 [ 29.090920] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.096083] RIP: 0033:0x7f2b8ec6261a [ 29.099767] RSP: 002b:00007fff7faa21b8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.107444] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2b8ec6261a [ 29.114686] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff7faa21d0 [ 29.121926] RBP: 00007fff7faa21d0 R08: 00007fff7faa2210 R09: 00005555560742c0 [ 29.129255] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.136499] R13: 00007fff7faa2210 R14: 0000000000000039 R15: 0000000020000758 [ 29.143744] 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 [ 29.162819] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888095d57750 [ 29.170765] ---[ end trace d09c233b19b9a530 ]--- [ 29.175568] Kernel panic - not syncing: Fatal exception [ 29.181077] Kernel Offset: disabled [ 29.184687] Rebooting in 86400 seconds..