[ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started System Logging Service. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.30' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.180550] INFO: trying to register non-static key. [ 33.185773] The code is fine but needs lockdep annotation, or maybe [ 33.191416] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 33.192165] you didn't initialize this object before use? [ 33.207450] turning off the locking correctness validator. [ 33.213055] CPU: 1 PID: 8116 Comm: syz-executor222 Not tainted 4.19.211-syzkaller #0 [ 33.220909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.230238] Call Trace: [ 33.232810] dump_stack+0x1fc/0x2ef [ 33.236415] register_lock_class+0xe82/0x11c0 [ 33.240893] ? static_obj+0x50/0x50 [ 33.244507] __lock_acquire+0x17d/0x3ff0 [ 33.248547] ? __lock_acquire+0x6de/0x3ff0 [ 33.252775] ? cache_alloc_refill+0x2f8/0x340 [ 33.257257] ? mark_held_locks+0xf0/0xf0 [ 33.261409] ? mark_held_locks+0xf0/0xf0 [ 33.265453] ? lock_downgrade+0x720/0x720 [ 33.269582] ? do_raw_spin_lock+0xcb/0x220 [ 33.273803] ? check_preemption_disabled+0x41/0x280 [ 33.278803] ? alloc_buffer_head+0x20/0x130 [ 33.283108] lock_acquire+0x170/0x3c0 [ 33.286889] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.291969] down_read+0x36/0x80 [ 33.295312] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.300391] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.305298] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.309600] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.315287] ? save_trace+0xd6/0x290 [ 33.318980] ? nilfs_mdt_write_page+0x280/0x280 [ 33.323627] nilfs_mdt_read_block+0x96/0x3e0 [ 33.328014] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.333873] ? mark_held_locks+0xf0/0xf0 [ 33.337933] nilfs_mdt_get_block+0xe6/0xd40 [ 33.342235] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.346878] ? lock_downgrade+0x720/0x720 [ 33.351000] ? lock_acquire+0x170/0x3c0 [ 33.354949] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.359681] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.364266] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.369432] ? nilfs_iget+0x1cf/0x860 [ 33.373212] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.378205] nilfs_iget+0x204/0x860 [ 33.381807] ? nilfs_iget_locked+0xd0/0xd0 [ 33.386022] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.390927] ? wait_woken+0x250/0x250 [ 33.394707] ? nilfs_mount+0x9df/0xe70 [ 33.398569] nilfs_get_root_dentry+0x26/0x250 [ 33.403041] nilfs_mount+0xac8/0xe70 [ 33.406730] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.411636] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.416633] ? pcpu_alloc+0xc9/0x1190 [ 33.420410] ? alloc_pages_current+0x19b/0x2a0 [ 33.424967] mount_fs+0xa3/0x310 [ 33.428310] vfs_kern_mount.part.0+0x68/0x470 [ 33.432791] do_mount+0x115c/0x2f50 [ 33.436401] ? cmp_ex_sort+0xc0/0xc0 [ 33.440092] ? __do_page_fault+0x180/0xd60 [ 33.444314] ? copy_mount_string+0x40/0x40 [ 33.448542] ? copy_mount_options+0x1cd/0x380 [ 33.453013] ? memset+0x20/0x40 [ 33.456266] ? copy_mount_options+0x26f/0x380 [ 33.460738] ksys_mount+0xcf/0x130 [ 33.464252] __x64_sys_mount+0xba/0x150 [ 33.468212] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.472779] do_syscall_64+0xf9/0x620 [ 33.476572] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.481743] RIP: 0033:0x7f392625564a [ 33.485438] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 33.504318] RSP: 002b:00007ffd2e9f2468 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.512003] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f392625564a [ 33.519247] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffd2e9f2480 [ 33.526494] RBP: 00007ffd2e9f2480 R08: 00007ffd2e9f24c0 R09: 000055555751b2c0 [ 33.533738] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.540983] R13: 00007ffd2e9f24c0 R14: 000000000000003a R15: 0000000020000770 [ 33.548612] kasan: CONFIG_KASAN_INLINE enabled [ 33.553187] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.560754] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.566988] CPU: 1 PID: 8116 Comm: syz-executor222 Not tainted 4.19.211-syzkaller #0 [ 33.574855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.584201] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.589895] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 95 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 7d 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 df [ 33.608774] RSP: 0018:ffff8880953ff650 EFLAGS: 00010246 [ 33.614115] RAX: 0000000000000000 RBX: ffff88808dfcb098 RCX: 0000000000000000 [ 33.621361] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dfcb158 [ 33.628605] RBP: ffff8880953ff738 R08: 0000000000000001 R09: 0000000000000000 [ 33.635849] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 33.643095] R13: 1ffff11012a7fecb R14: ffff88808dfcb0d0 R15: 0000000000000001 [ 33.650341] FS: 000055555751b300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 33.658542] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.664398] CR2: 00007ffd2e9f3000 CR3: 000000009702a000 CR4: 00000000003406e0 [ 33.671647] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.678902] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.686156] Call Trace: [ 33.688728] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.693032] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.698722] ? save_trace+0xd6/0x290 [ 33.702415] ? nilfs_mdt_write_page+0x280/0x280 [ 33.707062] nilfs_mdt_read_block+0x96/0x3e0 [ 33.711448] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.717307] ? mark_held_locks+0xf0/0xf0 [ 33.721347] nilfs_mdt_get_block+0xe6/0xd40 [ 33.725651] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.730296] ? lock_downgrade+0x720/0x720 [ 33.734417] ? lock_acquire+0x170/0x3c0 [ 33.738367] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.743102] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.747664] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.752828] ? nilfs_iget+0x1cf/0x860 [ 33.756605] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.762636] nilfs_iget+0x204/0x860 [ 33.766240] ? nilfs_iget_locked+0xd0/0xd0 [ 33.770450] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.775356] ? wait_woken+0x250/0x250 [ 33.779132] ? nilfs_mount+0x9df/0xe70 [ 33.782997] nilfs_get_root_dentry+0x26/0x250 [ 33.787467] nilfs_mount+0xac8/0xe70 [ 33.791159] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.796069] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.801062] ? pcpu_alloc+0xc9/0x1190 [ 33.804843] ? alloc_pages_current+0x19b/0x2a0 [ 33.809401] mount_fs+0xa3/0x310 [ 33.812746] vfs_kern_mount.part.0+0x68/0x470 [ 33.817220] do_mount+0x115c/0x2f50 [ 33.820828] ? cmp_ex_sort+0xc0/0xc0 [ 33.824521] ? __do_page_fault+0x180/0xd60 [ 33.828731] ? copy_mount_string+0x40/0x40 [ 33.832948] ? copy_mount_options+0x1cd/0x380 [ 33.837423] ? memset+0x20/0x40 [ 33.840679] ? copy_mount_options+0x26f/0x380 [ 33.845153] ksys_mount+0xcf/0x130 [ 33.848668] __x64_sys_mount+0xba/0x150 [ 33.852624] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.857183] do_syscall_64+0xf9/0x620 [ 33.860963] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.866129] RIP: 0033:0x7f392625564a [ 33.869822] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 33.888706] RSP: 002b:00007ffd2e9f2468 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.896391] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f392625564a [ 33.903645] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffd2e9f2480 [ 33.910897] RBP: 00007ffd2e9f2480 R08: 00007ffd2e9f24c0 R09: 000055555751b2c0 [ 33.918146] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.925393] R13: 00007ffd2e9f24c0 R14: 000000000000003a R15: 0000000020000770 [ 33.932643] Modules linked in: [ 33.935934] ---[ end trace d8f035a3f3356273 ]--- [ 33.940700] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.946485] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 95 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 7d 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 df [ 33.965430] RSP: 0018:ffff8880953ff650 EFLAGS: 00010246 [ 33.970777] RAX: 0000000000000000 RBX: ffff88808dfcb098 RCX: 0000000000000000 [ 33.978078] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dfcb158 [ 33.985380] RBP: ffff8880953ff738 R08: 0000000000000001 R09: 0000000000000000 [ 33.992635] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 34.000379] R13: 1ffff11012a7fecb R14: ffff88808dfcb0d0 R15: 0000000000000001 [ 34.007699] FS: 000055555751b300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.015948] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.021820] CR2: 00007ffd2e9f3000 CR3: 000000009702a000 CR4: 00000000003406e0 [ 34.029111] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.036403] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.043661] Kernel panic - not syncing: Fatal exception [ 34.049190] Kernel Offset: disabled [ 34.052797] Rebooting in 86400 seconds..