[ 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 '10.128.0.151' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.463462] INFO: trying to register non-static key. [ 28.465672] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.468573] the code is fine but needs lockdep annotation. [ 28.483943] turning off the locking correctness validator. [ 28.489554] CPU: 1 PID: 7975 Comm: syz-executor322 Not tainted 4.14.295-syzkaller #0 [ 28.497418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.506748] Call Trace: [ 28.509313] dump_stack+0x1b2/0x281 [ 28.512915] register_lock_class+0x389/0x1180 [ 28.517391] ? static_obj+0x50/0x50 [ 28.521003] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.526339] ? save_trace+0xd6/0x290 [ 28.530036] __lock_acquire+0x167/0x3f20 [ 28.534090] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 28.539080] ? trace_hardirqs_on+0x10/0x10 [ 28.543289] ? trace_hardirqs_on+0x10/0x10 [ 28.547502] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.552930] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.557921] ? alloc_buffer_head+0x20/0x110 [ 28.562224] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.567652] lock_acquire+0x170/0x3f0 [ 28.571430] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.576506] down_read+0x36/0x80 [ 28.579845] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.584920] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.589821] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.594116] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.599798] ? nilfs_mdt_write_page+0x250/0x250 [ 28.604438] nilfs_mdt_read_block+0x7c/0x320 [ 28.608817] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.614673] ? finish_task_switch+0x178/0x610 [ 28.619136] ? finish_task_switch+0x14d/0x610 [ 28.623601] nilfs_mdt_get_block+0xc7/0xb90 [ 28.627906] ? nilfs_mdt_read_block+0x320/0x320 [ 28.632546] ? lock_downgrade+0x740/0x740 [ 28.636664] nilfs_palloc_get_block+0xb2/0x250 [ 28.641219] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.646382] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.651370] nilfs_iget+0x1c2/0x810 [ 28.654969] ? nilfs_iget_locked+0xb0/0xb0 [ 28.659174] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.664087] ? nilfs_detach_log_writer+0x980/0x980 [ 28.668987] ? wait_woken+0x230/0x230 [ 28.672757] nilfs_get_root_dentry+0x24/0x1f0 [ 28.677283] nilfs_mount+0x984/0xd00 [ 28.680973] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.685879] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.691300] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.696373] ? alloc_pages_current+0x15d/0x260 [ 28.700928] ? __lockdep_init_map+0x100/0x560 [ 28.705395] mount_fs+0x92/0x2a0 [ 28.708735] vfs_kern_mount.part.0+0x5b/0x470 [ 28.713210] do_mount+0xe65/0x2a30 [ 28.716720] ? copy_mount_string+0x40/0x40 [ 28.720944] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.725949] ? copy_mnt_ns+0xa30/0xa30 [ 28.729818] ? copy_mount_options+0x1fa/0x2f0 [ 28.734295] ? copy_mnt_ns+0xa30/0xa30 [ 28.738155] SyS_mount+0xa8/0x120 [ 28.741583] ? copy_mnt_ns+0xa30/0xa30 [ 28.745448] do_syscall_64+0x1d5/0x640 [ 28.749571] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.754732] RIP: 0033:0x7f3dcf6b866a [ 28.758418] RSP: 002b:00007ffd997bc798 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.766096] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3dcf6b866a [ 28.773346] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffd997bc7b0 [ 28.780590] RBP: 00007ffd997bc7b0 R08: 00007ffd997bc7f0 R09: 00005555574352c0 [ 28.788886] R10: 0000000000010400 R11: 0000000000000286 R12: 0000000000000004 [ 28.796129] R13: 00007ffd997bc7f0 R14: 000000000000003b R15: 0000000020001088 [ 28.803880] kasan: CONFIG_KASAN_INLINE enabled [ 28.808579] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.815981] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.822195] Modules linked in: [ 28.825377] CPU: 1 PID: 7975 Comm: syz-executor322 Not tainted 4.14.295-syzkaller #0 [ 28.833233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.842626] task: ffff88809ca92180 task.stack: ffff88808d068000 [ 28.848661] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.854342] RSP: 0018:ffff88808d06f750 EFLAGS: 00010246 [ 28.859687] RAX: 0000000000000000 RBX: ffff88808df06098 RCX: 0000000000000000 [ 28.866929] RDX: dffffc0000000000 RSI: 1ffff11011a0de93 RDI: ffff88808df06158 [ 28.874169] RBP: ffff88808d06f818 R08: 0000000000000001 R09: 0000000000000000 [ 28.881410] R10: 0000000000000001 R11: ffff88809ca92180 R12: 0000000000000002 [ 28.888651] R13: 1ffff11011a0deeb R14: ffff88808df060d0 R15: 0000000000000001 [ 28.895892] FS: 0000555557435300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.904087] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.909941] CR2: 00007f3dcf690ca0 CR3: 00000000a9b67000 CR4: 00000000003406e0 [ 28.917183] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.924429] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.931669] Call Trace: [ 28.934237] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.938535] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.944226] ? nilfs_mdt_write_page+0x250/0x250 [ 28.950364] nilfs_mdt_read_block+0x7c/0x320 [ 28.954743] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.960879] ? finish_task_switch+0x178/0x610 [ 28.965346] ? finish_task_switch+0x14d/0x610 [ 28.969816] nilfs_mdt_get_block+0xc7/0xb90 [ 28.974110] ? nilfs_mdt_read_block+0x320/0x320 [ 28.978749] ? lock_downgrade+0x740/0x740 [ 28.982957] nilfs_palloc_get_block+0xb2/0x250 [ 28.987513] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.992684] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.997670] nilfs_iget+0x1c2/0x810 [ 29.001272] ? nilfs_iget_locked+0xb0/0xb0 [ 29.005476] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.010377] ? nilfs_detach_log_writer+0x980/0x980 [ 29.015282] ? wait_woken+0x230/0x230 [ 29.019053] nilfs_get_root_dentry+0x24/0x1f0 [ 29.023540] nilfs_mount+0x984/0xd00 [ 29.027228] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.032129] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.037550] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.042538] ? alloc_pages_current+0x15d/0x260 [ 29.047091] ? __lockdep_init_map+0x100/0x560 [ 29.051557] mount_fs+0x92/0x2a0 [ 29.054896] vfs_kern_mount.part.0+0x5b/0x470 [ 29.059362] do_mount+0xe65/0x2a30 [ 29.062877] ? copy_mount_string+0x40/0x40 [ 29.067082] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.072072] ? copy_mnt_ns+0xa30/0xa30 [ 29.075932] ? copy_mount_options+0x1fa/0x2f0 [ 29.080407] ? copy_mnt_ns+0xa30/0xa30 [ 29.084265] SyS_mount+0xa8/0x120 [ 29.087690] ? copy_mnt_ns+0xa30/0xa30 [ 29.091548] do_syscall_64+0x1d5/0x640 [ 29.095410] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.100581] RIP: 0033:0x7f3dcf6b866a [ 29.104262] RSP: 002b:00007ffd997bc798 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.111941] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3dcf6b866a [ 29.119182] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffd997bc7b0 [ 29.126421] RBP: 00007ffd997bc7b0 R08: 00007ffd997bc7f0 R09: 00005555574352c0 [ 29.133660] R10: 0000000000010400 R11: 0000000000000286 R12: 0000000000000004 [ 29.140903] R13: 00007ffd997bc7f0 R14: 000000000000003b R15: 0000000020001088 [ 29.148148] 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 [ 29.167205] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff88808d06f750 [ 29.177519] ---[ end trace 4048d2a477bf637a ]--- [ 29.182273] Kernel panic - not syncing: Fatal exception [ 29.187685] Kernel Offset: disabled [ 29.191290] Rebooting in 86400 seconds..