[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.349448] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 29.349602] INFO: trying to register non-static key. [ 29.364346] the code is fine but needs lockdep annotation. [ 29.369950] turning off the locking correctness validator. [ 29.375563] CPU: 1 PID: 7964 Comm: syz-executor560 Not tainted 4.14.295-syzkaller #0 [ 29.383413] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.392739] Call Trace: [ 29.395312] dump_stack+0x1b2/0x281 [ 29.398916] register_lock_class+0x389/0x1180 [ 29.403386] ? static_obj+0x50/0x50 [ 29.406987] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 29.412324] ? save_trace+0xd6/0x290 [ 29.416014] __lock_acquire+0x167/0x3f20 [ 29.420050] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 29.425039] ? trace_hardirqs_on+0x10/0x10 [ 29.429250] ? trace_hardirqs_on+0x10/0x10 [ 29.433460] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.438891] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.443882] ? alloc_buffer_head+0x20/0x110 [ 29.448180] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.453619] lock_acquire+0x170/0x3f0 [ 29.457402] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.462546] down_read+0x36/0x80 [ 29.465888] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.470964] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.475867] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.480165] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.485858] ? nilfs_mdt_write_page+0x250/0x250 [ 29.490501] nilfs_mdt_read_block+0x7c/0x320 [ 29.494887] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.500745] ? __lock_acquire+0x2190/0x3f20 [ 29.505043] nilfs_mdt_get_block+0xc7/0xb90 [ 29.509343] ? nilfs_mdt_read_block+0x320/0x320 [ 29.513988] ? lock_downgrade+0x740/0x740 [ 29.518110] nilfs_palloc_get_block+0xb2/0x250 [ 29.522667] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.527830] ? nilfs_iget+0x18e/0x810 [ 29.531604] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.536599] nilfs_iget+0x1c2/0x810 [ 29.540199] ? nilfs_iget_locked+0xb0/0xb0 [ 29.544405] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.549310] ? nilfs_detach_log_writer+0x980/0x980 [ 29.554211] ? wait_woken+0x230/0x230 [ 29.557984] nilfs_get_root_dentry+0x24/0x1f0 [ 29.562451] nilfs_mount+0x984/0xd00 [ 29.566135] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.571037] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.576459] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.581447] ? alloc_pages_current+0x15d/0x260 [ 29.586001] ? __lockdep_init_map+0x100/0x560 [ 29.590468] mount_fs+0x92/0x2a0 [ 29.593808] vfs_kern_mount.part.0+0x5b/0x470 [ 29.598278] do_mount+0xe65/0x2a30 [ 29.601790] ? copy_mount_string+0x40/0x40 [ 29.606136] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.611134] ? copy_mnt_ns+0xa30/0xa30 [ 29.615006] ? copy_mount_options+0x1fa/0x2f0 [ 29.619481] ? copy_mnt_ns+0xa30/0xa30 [ 29.623411] SyS_mount+0xa8/0x120 [ 29.626843] ? copy_mnt_ns+0xa30/0xa30 [ 29.630709] do_syscall_64+0x1d5/0x640 [ 29.634572] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.639734] RIP: 0033:0x7fc5df26824a [ 29.643420] RSP: 002b:00007fc5df213168 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.651110] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc5df26824a [ 29.658359] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007fc5df213180 [ 29.665603] RBP: 0000000000000004 R08: 00007fc5df2131c0 R09: 00007fc5df2136b8 [ 29.672847] R10: 0000000000000000 R11: 0000000000000286 R12: 00007fc5df2131c0 [ 29.680092] R13: 000000000000003a R14: 00007fc5df213180 R15: 0000000020000770 [ 29.687961] kasan: CONFIG_KASAN_INLINE enabled [ 29.692704] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.700124] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.706341] Modules linked in: [ 29.709521] CPU: 1 PID: 7964 Comm: syz-executor560 Not tainted 4.14.295-syzkaller #0 [ 29.717374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.726702] task: ffff8880981884c0 task.stack: ffff888091a88000 [ 29.732734] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 29.738495] RSP: 0018:ffff888091a8f750 EFLAGS: 00010246 [ 29.743832] RAX: 0000000000000000 RBX: ffff88808e2e4098 RCX: 0000000000000000 [ 29.751217] RDX: dffffc0000000000 RSI: 1ffff11012351e93 RDI: ffff88808e2e4158 [ 29.758466] RBP: ffff888091a8f818 R08: 0000000000000001 R09: 0000000000000000 [ 29.765713] R10: 0000000000000001 R11: ffff8880981884c0 R12: 0000000000000002 [ 29.772959] R13: 1ffff11012351eeb R14: ffff88808e2e40d0 R15: 0000000000000001 [ 29.780203] FS: 00007fc5df213700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.788401] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.794258] CR2: 00007fc5df2cfa2c CR3: 00000000a44dc000 CR4: 00000000003406e0 [ 29.801504] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.808750] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.816000] Call Trace: [ 29.818575] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.822873] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.828557] ? nilfs_mdt_write_page+0x250/0x250 [ 29.833202] nilfs_mdt_read_block+0x7c/0x320 [ 29.837588] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.843450] ? __lock_acquire+0x2190/0x3f20 [ 29.847750] nilfs_mdt_get_block+0xc7/0xb90 [ 29.852047] ? nilfs_mdt_read_block+0x320/0x320 [ 29.856703] ? lock_downgrade+0x740/0x740 [ 29.860823] nilfs_palloc_get_block+0xb2/0x250 [ 29.865379] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.870543] ? nilfs_iget+0x18e/0x810 [ 29.874316] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.879309] nilfs_iget+0x1c2/0x810 [ 29.882911] ? nilfs_iget_locked+0xb0/0xb0 [ 29.887121] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.892023] ? nilfs_detach_log_writer+0x980/0x980 [ 29.896939] ? wait_woken+0x230/0x230 [ 29.900714] nilfs_get_root_dentry+0x24/0x1f0 [ 29.905183] nilfs_mount+0x984/0xd00 [ 29.908868] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.913770] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.919193] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.924184] ? alloc_pages_current+0x15d/0x260 [ 29.928737] ? __lockdep_init_map+0x100/0x560 [ 29.933209] mount_fs+0x92/0x2a0 [ 29.936551] vfs_kern_mount.part.0+0x5b/0x470 [ 29.941019] do_mount+0xe65/0x2a30 [ 29.944535] ? copy_mount_string+0x40/0x40 [ 29.948741] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.953728] ? copy_mnt_ns+0xa30/0xa30 [ 29.957587] ? copy_mount_options+0x1fa/0x2f0 [ 29.962055] ? copy_mnt_ns+0xa30/0xa30 [ 29.965913] SyS_mount+0xa8/0x120 [ 29.969340] ? copy_mnt_ns+0xa30/0xa30 [ 29.973199] do_syscall_64+0x1d5/0x640 [ 29.977063] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.982228] RIP: 0033:0x7fc5df26824a [ 29.985920] RSP: 002b:00007fc5df213168 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.993601] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc5df26824a [ 30.000843] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007fc5df213180 [ 30.008088] RBP: 0000000000000004 R08: 00007fc5df2131c0 R09: 00007fc5df2136b8 [ 30.015336] R10: 0000000000000000 R11: 0000000000000286 R12: 00007fc5df2131c0 [ 30.022578] R13: 000000000000003a R14: 00007fc5df213180 R15: 0000000020000770 [ 30.029821] 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 [ 30.048882] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888091a8f750 [ 30.056481] ---[ end trace bb833ac63d79ad7c ]--- [ 30.061262] Kernel panic - not syncing: Fatal exception [ 30.066762] Kernel Offset: disabled [ 30.070368] Rebooting in 86400 seconds..