[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.92' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.369228] INFO: trying to register non-static key. [ 28.374453] the code is fine but needs lockdep annotation. [ 28.375013] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.380060] turning off the locking correctness validator. [ 28.395434] CPU: 0 PID: 8022 Comm: syz-executor660 Not tainted 4.14.295-syzkaller #0 [ 28.403283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.412617] Call Trace: [ 28.415190] dump_stack+0x1b2/0x281 [ 28.418794] register_lock_class+0x389/0x1180 [ 28.423383] ? static_obj+0x50/0x50 [ 28.426983] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.432430] ? save_trace+0xd6/0x290 [ 28.436127] __lock_acquire+0x167/0x3f20 [ 28.440174] ? trace_hardirqs_on+0x10/0x10 [ 28.444390] ? trace_hardirqs_on+0x10/0x10 [ 28.448602] ? alloc_buffer_head+0x20/0x110 [ 28.452899] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.458325] lock_acquire+0x170/0x3f0 [ 28.462101] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.467178] down_read+0x36/0x80 [ 28.470518] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.475595] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.480507] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.484802] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.490491] ? nilfs_mdt_write_page+0x250/0x250 [ 28.495134] nilfs_mdt_read_block+0x7c/0x320 [ 28.499515] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.505372] ? __lock_acquire+0x2190/0x3f20 [ 28.509667] nilfs_mdt_get_block+0xc7/0xb90 [ 28.513962] ? nilfs_mdt_read_block+0x320/0x320 [ 28.518603] ? lock_downgrade+0x740/0x740 [ 28.522722] nilfs_palloc_get_block+0xb2/0x250 [ 28.527278] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.532441] ? nilfs_iget+0x18e/0x810 [ 28.536216] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.541203] nilfs_iget+0x1c2/0x810 [ 28.544802] ? nilfs_iget_locked+0xb0/0xb0 [ 28.549009] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.553910] ? nilfs_detach_log_writer+0x980/0x980 [ 28.558813] ? wait_woken+0x230/0x230 [ 28.562589] nilfs_get_root_dentry+0x24/0x1f0 [ 28.567059] nilfs_mount+0x984/0xd00 [ 28.570750] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.575652] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.581079] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.586068] ? alloc_pages_current+0x15d/0x260 [ 28.590626] ? __lockdep_init_map+0x100/0x560 [ 28.595095] mount_fs+0x92/0x2a0 [ 28.598438] vfs_kern_mount.part.0+0x5b/0x470 [ 28.602909] do_mount+0xe65/0x2a30 [ 28.606423] ? copy_mount_string+0x40/0x40 [ 28.610632] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.615620] ? copy_mnt_ns+0xa30/0xa30 [ 28.619483] ? copy_mount_options+0x1fa/0x2f0 [ 28.623950] ? copy_mnt_ns+0xa30/0xa30 [ 28.627812] SyS_mount+0xa8/0x120 [ 28.631247] ? copy_mnt_ns+0xa30/0xa30 [ 28.635108] do_syscall_64+0x1d5/0x640 [ 28.638977] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.644143] RIP: 0033:0x7fb86e1bf67a [ 28.647825] RSP: 002b:00007fff98085c78 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.655505] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb86e1bf67a [ 28.662747] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff98085c90 [ 28.669991] RBP: 00007fff98085c90 R08: 00007fff98085cd0 R09: 0000555555d3d2c0 [ 28.677235] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.684479] R13: 00007fff98085cd0 R14: 000000000000003b R15: 0000000020000788 [ 28.692160] kasan: CONFIG_KASAN_INLINE enabled [ 28.696729] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.704142] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.710362] Modules linked in: [ 28.713547] CPU: 0 PID: 8022 Comm: syz-executor660 Not tainted 4.14.295-syzkaller #0 [ 28.721400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.730725] task: ffff8880b2cd8200 task.stack: ffff888095b20000 [ 28.736759] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.742550] RSP: 0018:ffff888095b27750 EFLAGS: 00010246 [ 28.747885] RAX: 0000000000000000 RBX: ffff88808df1d098 RCX: 0000000000000000 [ 28.755142] RDX: dffffc0000000000 RSI: 1ffff11012b64e93 RDI: ffff88808df1d158 [ 28.762587] RBP: ffff888095b27818 R08: 0000000000000001 R09: 0000000000000000 [ 28.769832] R10: 0000000000000001 R11: ffff8880b2cd8200 R12: 0000000000000002 [ 28.777075] R13: 1ffff11012b64eeb R14: ffff88808df1d0d0 R15: 0000000000000001 [ 28.784321] FS: 0000555555d3d300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 28.792715] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.798570] CR2: 000055c56f16e988 CR3: 00000000ac1f9000 CR4: 00000000003406f0 [ 28.805814] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.813058] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.820317] Call Trace: [ 28.822882] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.827180] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.832863] ? nilfs_mdt_write_page+0x250/0x250 [ 28.837508] nilfs_mdt_read_block+0x7c/0x320 [ 28.841890] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.847749] ? __lock_acquire+0x2190/0x3f20 [ 28.852046] nilfs_mdt_get_block+0xc7/0xb90 [ 28.856343] ? nilfs_mdt_read_block+0x320/0x320 [ 28.860985] ? lock_downgrade+0x740/0x740 [ 28.865109] nilfs_palloc_get_block+0xb2/0x250 [ 28.869925] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.875089] ? nilfs_iget+0x18e/0x810 [ 28.878870] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.883859] nilfs_iget+0x1c2/0x810 [ 28.887463] ? nilfs_iget_locked+0xb0/0xb0 [ 28.891672] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.896576] ? nilfs_detach_log_writer+0x980/0x980 [ 28.901481] ? wait_woken+0x230/0x230 [ 28.905263] nilfs_get_root_dentry+0x24/0x1f0 [ 28.909735] nilfs_mount+0x984/0xd00 [ 28.913425] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.918337] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.923761] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.928753] ? alloc_pages_current+0x15d/0x260 [ 28.933310] ? __lockdep_init_map+0x100/0x560 [ 28.937777] mount_fs+0x92/0x2a0 [ 28.941118] vfs_kern_mount.part.0+0x5b/0x470 [ 28.945588] do_mount+0xe65/0x2a30 [ 28.949103] ? copy_mount_string+0x40/0x40 [ 28.953312] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.958303] ? copy_mnt_ns+0xa30/0xa30 [ 28.962164] ? copy_mount_options+0x1fa/0x2f0 [ 28.966632] ? copy_mnt_ns+0xa30/0xa30 [ 28.970493] SyS_mount+0xa8/0x120 [ 28.973945] ? copy_mnt_ns+0xa30/0xa30 [ 28.977809] do_syscall_64+0x1d5/0x640 [ 28.981674] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.986836] RIP: 0033:0x7fb86e1bf67a [ 28.990519] RSP: 002b:00007fff98085c78 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.998197] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb86e1bf67a [ 29.005441] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff98085c90 [ 29.012684] RBP: 00007fff98085c90 R08: 00007fff98085cd0 R09: 0000555555d3d2c0 [ 29.019929] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.027181] R13: 00007fff98085cd0 R14: 000000000000003b R15: 0000000020000788 [ 29.034425] 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 [ 29.053484] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888095b27750 [ 29.061056] ---[ end trace 8acf740ab9d230cc ]--- [ 29.065799] Kernel panic - not syncing: Fatal exception [ 29.071309] Kernel Offset: disabled [ 29.074919] Rebooting in 86400 seconds..