[ 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 '10.128.10.19' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.276277] INFO: trying to register non-static key. [ 29.281395] the code is fine but needs lockdep annotation. [ 29.286996] turning off the locking correctness validator. [ 29.289783] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 29.292599] CPU: 0 PID: 7997 Comm: syz-executor880 Not tainted 4.14.295-syzkaller #0 [ 29.310220] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.319553] Call Trace: [ 29.322116] dump_stack+0x1b2/0x281 [ 29.325716] register_lock_class+0x389/0x1180 [ 29.330182] ? static_obj+0x50/0x50 [ 29.333782] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 29.339117] ? save_trace+0xd6/0x290 [ 29.342808] __lock_acquire+0x167/0x3f20 [ 29.346843] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 29.351834] ? trace_hardirqs_on+0x10/0x10 [ 29.356040] ? trace_hardirqs_on+0x10/0x10 [ 29.360244] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.365666] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.370653] ? alloc_buffer_head+0x20/0x110 [ 29.374944] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.380367] lock_acquire+0x170/0x3f0 [ 29.384139] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.389215] down_read+0x36/0x80 [ 29.392552] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.397625] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.402529] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.406823] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.412506] ? nilfs_mdt_write_page+0x250/0x250 [ 29.417145] nilfs_mdt_read_block+0x7c/0x320 [ 29.421526] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.427384] ? __lock_acquire+0x2190/0x3f20 [ 29.431675] nilfs_mdt_get_block+0xc7/0xb90 [ 29.435969] ? nilfs_mdt_read_block+0x320/0x320 [ 29.440609] ? lock_downgrade+0x740/0x740 [ 29.444730] nilfs_palloc_get_block+0xb2/0x250 [ 29.449283] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.454442] ? nilfs_iget+0x18e/0x810 [ 29.458215] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.463214] nilfs_iget+0x1c2/0x810 [ 29.466824] ? nilfs_iget_locked+0xb0/0xb0 [ 29.471034] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.475939] ? nilfs_detach_log_writer+0x980/0x980 [ 29.480847] ? wait_woken+0x230/0x230 [ 29.484622] nilfs_get_root_dentry+0x24/0x1f0 [ 29.489089] nilfs_mount+0x984/0xd00 [ 29.492778] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.497682] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.503106] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.508093] ? alloc_pages_current+0x15d/0x260 [ 29.512645] ? __lockdep_init_map+0x100/0x560 [ 29.517114] mount_fs+0x92/0x2a0 [ 29.520453] vfs_kern_mount.part.0+0x5b/0x470 [ 29.524918] do_mount+0xe65/0x2a30 [ 29.528431] ? copy_mount_string+0x40/0x40 [ 29.532639] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.537639] ? copy_mnt_ns+0xa30/0xa30 [ 29.541502] ? copy_mount_options+0x1fa/0x2f0 [ 29.545975] ? copy_mnt_ns+0xa30/0xa30 [ 29.549844] SyS_mount+0xa8/0x120 [ 29.553283] ? copy_mnt_ns+0xa30/0xa30 [ 29.557150] do_syscall_64+0x1d5/0x640 [ 29.561021] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.566189] RIP: 0033:0x7f17a59e676a [ 29.569876] RSP: 002b:00007ffeff7f4318 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.577561] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f17a59e676a [ 29.584815] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffeff7f4330 [ 29.592064] RBP: 00007ffeff7f4330 R08: 00007ffeff7f4370 R09: 00005555556fc2c0 [ 29.599306] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.606550] R13: 00007ffeff7f4370 R14: 000000000000003b R15: 0000000020000788 [ 29.614138] kasan: CONFIG_KASAN_INLINE enabled [ 29.618708] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.626356] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.632578] Modules linked in: [ 29.635758] CPU: 0 PID: 7997 Comm: syz-executor880 Not tainted 4.14.295-syzkaller #0 [ 29.643613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.652945] task: ffff8880b5362280 task.stack: ffff88808d0c0000 [ 29.658986] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 29.664670] RSP: 0018:ffff88808d0c7750 EFLAGS: 00010246 [ 29.670009] RAX: 0000000000000000 RBX: ffff88808def8098 RCX: 0000000000000000 [ 29.677254] RDX: dffffc0000000000 RSI: 1ffff11011a18e93 RDI: ffff88808def8158 [ 29.684497] RBP: ffff88808d0c7818 R08: 0000000000000001 R09: 0000000000000000 [ 29.691740] R10: 0000000000000001 R11: ffff8880b5362280 R12: 0000000000000002 [ 29.698980] R13: 1ffff11011a18eeb R14: ffff88808def80d0 R15: 0000000000000001 [ 29.706221] FS: 00005555556fc300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.714415] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.720266] CR2: 00007f17a5a3fcec CR3: 00000000ac0b1000 CR4: 00000000003406f0 [ 29.727509] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.734748] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.741990] Call Trace: [ 29.744561] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.748861] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.754551] ? nilfs_mdt_write_page+0x250/0x250 [ 29.759200] nilfs_mdt_read_block+0x7c/0x320 [ 29.763586] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.769446] ? __lock_acquire+0x2190/0x3f20 [ 29.773746] nilfs_mdt_get_block+0xc7/0xb90 [ 29.778044] ? nilfs_mdt_read_block+0x320/0x320 [ 29.782683] ? lock_downgrade+0x740/0x740 [ 29.786804] nilfs_palloc_get_block+0xb2/0x250 [ 29.791359] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.796521] ? nilfs_iget+0x18e/0x810 [ 29.800293] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.805278] nilfs_iget+0x1c2/0x810 [ 29.808875] ? nilfs_iget_locked+0xb0/0xb0 [ 29.813080] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.817980] ? nilfs_detach_log_writer+0x980/0x980 [ 29.822883] ? wait_woken+0x230/0x230 [ 29.826656] nilfs_get_root_dentry+0x24/0x1f0 [ 29.831122] nilfs_mount+0x984/0xd00 [ 29.834808] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.839712] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.845136] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.850126] ? alloc_pages_current+0x15d/0x260 [ 29.854680] ? __lockdep_init_map+0x100/0x560 [ 29.859147] mount_fs+0x92/0x2a0 [ 29.862489] vfs_kern_mount.part.0+0x5b/0x470 [ 29.866954] do_mount+0xe65/0x2a30 [ 29.870478] ? copy_mount_string+0x40/0x40 [ 29.874686] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.879672] ? copy_mnt_ns+0xa30/0xa30 [ 29.883529] ? copy_mount_options+0x1fa/0x2f0 [ 29.887994] ? copy_mnt_ns+0xa30/0xa30 [ 29.891851] SyS_mount+0xa8/0x120 [ 29.895276] ? copy_mnt_ns+0xa30/0xa30 [ 29.899137] do_syscall_64+0x1d5/0x640 [ 29.903001] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.908164] RIP: 0033:0x7f17a59e676a [ 29.911849] RSP: 002b:00007ffeff7f4318 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.919526] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f17a59e676a [ 29.926770] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffeff7f4330 [ 29.934010] RBP: 00007ffeff7f4330 R08: 00007ffeff7f4370 R09: 00005555556fc2c0 [ 29.941252] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.948495] R13: 00007ffeff7f4370 R14: 000000000000003b R15: 0000000020000788 [ 29.955741] 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 [ 29.974800] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff88808d0c7750 [ 29.982271] ---[ end trace d9d30eea2d0d6a36 ]--- [ 29.987013] Kernel panic - not syncing: Fatal exception [ 29.992537] Kernel Offset: disabled [ 29.996145] Rebooting in 86400 seconds..