[ 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 '10.128.1.101' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.698135] INFO: trying to register non-static key. [ 29.703260] the code is fine but needs lockdep annotation. [ 29.706811] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 29.708870] turning off the locking correctness validator. [ 29.724258] CPU: 1 PID: 8004 Comm: syz-executor184 Not tainted 4.14.295-syzkaller #0 [ 29.732125] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.741458] Call Trace: [ 29.744030] dump_stack+0x1b2/0x281 [ 29.747640] register_lock_class+0x389/0x1180 [ 29.752116] ? static_obj+0x50/0x50 [ 29.755722] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 29.761064] ? save_trace+0xd6/0x290 [ 29.764775] __lock_acquire+0x167/0x3f20 [ 29.768849] ? cache_alloc_refill+0x2fa/0x350 [ 29.773318] ? trace_hardirqs_on+0x10/0x10 [ 29.777525] ? trace_hardirqs_on+0x10/0x10 [ 29.781747] ? lock_downgrade+0x740/0x740 [ 29.785890] ? alloc_buffer_head+0x20/0x110 [ 29.790209] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.795672] lock_acquire+0x170/0x3f0 [ 29.799454] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.804535] down_read+0x36/0x80 [ 29.807877] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.812956] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.817857] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.822158] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.827843] ? nilfs_mdt_write_page+0x250/0x250 [ 29.832486] nilfs_mdt_read_block+0x7c/0x320 [ 29.836868] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.842723] ? __lock_acquire+0x2190/0x3f20 [ 29.847019] nilfs_mdt_get_block+0xc7/0xb90 [ 29.851313] ? nilfs_mdt_read_block+0x320/0x320 [ 29.855955] ? lock_downgrade+0x740/0x740 [ 29.860076] nilfs_palloc_get_block+0xb2/0x250 [ 29.864628] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.869791] ? nilfs_iget+0x18e/0x810 [ 29.873564] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.878559] nilfs_iget+0x1c2/0x810 [ 29.882159] ? nilfs_iget_locked+0xb0/0xb0 [ 29.886365] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.891267] ? nilfs_detach_log_writer+0x980/0x980 [ 29.896189] ? wait_woken+0x230/0x230 [ 29.899960] nilfs_get_root_dentry+0x24/0x1f0 [ 29.904429] nilfs_mount+0x984/0xd00 [ 29.908118] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.913020] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.918446] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.923437] ? alloc_pages_current+0x15d/0x260 [ 29.928019] ? __lockdep_init_map+0x100/0x560 [ 29.932486] mount_fs+0x92/0x2a0 [ 29.935823] vfs_kern_mount.part.0+0x5b/0x470 [ 29.940289] do_mount+0xe65/0x2a30 [ 29.943811] ? retint_kernel+0x2d/0x2d [ 29.947670] ? copy_mount_string+0x40/0x40 [ 29.951876] ? memset+0x20/0x40 [ 29.955126] ? copy_mount_options+0x1fa/0x2f0 [ 29.959593] ? copy_mnt_ns+0xa30/0xa30 [ 29.963453] SyS_mount+0xa8/0x120 [ 29.966882] ? copy_mnt_ns+0xa30/0xa30 [ 29.970747] do_syscall_64+0x1d5/0x640 [ 29.974616] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.979779] RIP: 0033:0x7f30867ec6da [ 29.983472] RSP: 002b:00007ffc3ebe60d8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.991155] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f30867ec6da [ 29.998424] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc3ebe60f0 [ 30.005670] RBP: 00007ffc3ebe60f0 R08: 00007ffc3ebe6130 R09: 0000555555be52c0 [ 30.012943] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 30.020276] R13: 00007ffc3ebe6130 R14: 0000000000000039 R15: 0000000020000758 [ 30.028191] kasan: CONFIG_KASAN_INLINE enabled [ 30.032766] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.040241] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 30.046636] Modules linked in: [ 30.049814] CPU: 1 PID: 8004 Comm: syz-executor184 Not tainted 4.14.295-syzkaller #0 [ 30.057666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 30.067009] task: ffff888093a98580 task.stack: ffff888093a90000 [ 30.073046] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 30.078725] RSP: 0018:ffff888093a97750 EFLAGS: 00010246 [ 30.084074] RAX: 0000000000000000 RBX: ffff88808df58098 RCX: 0000000000000000 [ 30.091317] RDX: dffffc0000000000 RSI: 1ffff11012752e93 RDI: ffff88808df58158 [ 30.098559] RBP: ffff888093a97818 R08: 0000000000000001 R09: 0000000000000000 [ 30.105815] R10: 0000000000000001 R11: ffff888093a98580 R12: 0000000000000002 [ 30.113058] R13: 1ffff11012752eeb R14: ffff88808df580d0 R15: 0000000000000001 [ 30.120305] FS: 0000555555be5300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 30.128506] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.134359] CR2: 00007ffc3ebe7000 CR3: 0000000097179000 CR4: 00000000003406e0 [ 30.141609] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.148852] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.156096] Call Trace: [ 30.158664] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 30.162960] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 30.168644] ? nilfs_mdt_write_page+0x250/0x250 [ 30.173290] nilfs_mdt_read_block+0x7c/0x320 [ 30.177689] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 30.183572] ? __lock_acquire+0x2190/0x3f20 [ 30.187866] nilfs_mdt_get_block+0xc7/0xb90 [ 30.192175] ? nilfs_mdt_read_block+0x320/0x320 [ 30.196828] ? lock_downgrade+0x740/0x740 [ 30.200952] nilfs_palloc_get_block+0xb2/0x250 [ 30.205510] nilfs_palloc_get_entry_block+0x17d/0x230 [ 30.210673] ? nilfs_iget+0x18e/0x810 [ 30.214446] nilfs_ifile_get_inode_block+0xb4/0x150 [ 30.219438] nilfs_iget+0x1c2/0x810 [ 30.223044] ? nilfs_iget_locked+0xb0/0xb0 [ 30.227251] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 30.232243] ? nilfs_detach_log_writer+0x980/0x980 [ 30.237161] ? wait_woken+0x230/0x230 [ 30.240935] nilfs_get_root_dentry+0x24/0x1f0 [ 30.245404] nilfs_mount+0x984/0xd00 [ 30.249091] ? nilfs_attach_checkpoint+0x420/0x420 [ 30.253997] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.259421] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.264409] ? alloc_pages_current+0x15d/0x260 [ 30.268965] ? __lockdep_init_map+0x100/0x560 [ 30.273431] mount_fs+0x92/0x2a0 [ 30.276774] vfs_kern_mount.part.0+0x5b/0x470 [ 30.281244] do_mount+0xe65/0x2a30 [ 30.284759] ? retint_kernel+0x2d/0x2d [ 30.288626] ? copy_mount_string+0x40/0x40 [ 30.292834] ? memset+0x20/0x40 [ 30.296085] ? copy_mount_options+0x1fa/0x2f0 [ 30.300552] ? copy_mnt_ns+0xa30/0xa30 [ 30.304415] SyS_mount+0xa8/0x120 [ 30.307843] ? copy_mnt_ns+0xa30/0xa30 [ 30.311705] do_syscall_64+0x1d5/0x640 [ 30.315566] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.320726] RIP: 0033:0x7f30867ec6da [ 30.324433] RSP: 002b:00007ffc3ebe60d8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 30.332121] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f30867ec6da [ 30.339364] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc3ebe60f0 [ 30.346608] RBP: 00007ffc3ebe60f0 R08: 00007ffc3ebe6130 R09: 0000555555be52c0 [ 30.353852] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 30.361094] R13: 00007ffc3ebe6130 R14: 0000000000000039 R15: 0000000020000758 [ 30.368339] 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 [ 30.387402] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888093a97750 [ 30.394963] ---[ end trace 78b7a3b86585ea9b ]--- [ 30.399788] Kernel panic - not syncing: Fatal exception [ 30.405637] Kernel Offset: disabled [ 30.409254] Rebooting in 86400 seconds..