[ 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 '10.128.1.126' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.347450] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 33.369014] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 33.369201] INFO: trying to register non-static key. [ 33.383932] The code is fine but needs lockdep annotation, or maybe [ 33.390314] you didn't initialize this object before use? [ 33.395829] turning off the locking correctness validator. [ 33.401437] CPU: 0 PID: 8092 Comm: syz-executor882 Not tainted 4.19.211-syzkaller #0 [ 33.409468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.418835] Call Trace: [ 33.421411] dump_stack+0x1fc/0x2ef [ 33.425026] register_lock_class+0xe82/0x11c0 [ 33.429509] ? static_obj+0x50/0x50 [ 33.433132] __lock_acquire+0x17d/0x3ff0 [ 33.437198] ? __lock_acquire+0x6de/0x3ff0 [ 33.441421] ? cache_alloc_refill+0x2f8/0x340 [ 33.445897] ? mark_held_locks+0xf0/0xf0 [ 33.449938] ? mark_held_locks+0xf0/0xf0 [ 33.453978] ? lock_downgrade+0x720/0x720 [ 33.458108] ? do_raw_spin_lock+0xcb/0x220 [ 33.462336] ? check_preemption_disabled+0x41/0x280 [ 33.467342] ? alloc_buffer_head+0x20/0x130 [ 33.471647] lock_acquire+0x170/0x3c0 [ 33.475427] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.480510] down_read+0x36/0x80 [ 33.483859] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.488942] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.493851] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.498157] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.503850] ? save_trace+0xd6/0x290 [ 33.507547] ? nilfs_mdt_write_page+0x280/0x280 [ 33.512220] nilfs_mdt_read_block+0x96/0x3e0 [ 33.516618] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.522487] ? mark_held_locks+0xf0/0xf0 [ 33.526534] nilfs_mdt_get_block+0xe6/0xd40 [ 33.530839] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.535497] ? lock_downgrade+0x720/0x720 [ 33.539626] ? lock_acquire+0x170/0x3c0 [ 33.543580] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.548320] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.552883] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.558056] ? nilfs_iget+0x1cf/0x860 [ 33.561837] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.566834] nilfs_iget+0x204/0x860 [ 33.570442] ? nilfs_iget_locked+0xd0/0xd0 [ 33.574659] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.579572] ? wait_woken+0x250/0x250 [ 33.583361] ? nilfs_mount+0x9df/0xe70 [ 33.587234] nilfs_get_root_dentry+0x26/0x250 [ 33.591713] nilfs_mount+0xac8/0xe70 [ 33.595411] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.600327] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.605328] ? pcpu_alloc+0xc9/0x1190 [ 33.609114] ? alloc_pages_current+0x19b/0x2a0 [ 33.613682] mount_fs+0xa3/0x310 [ 33.617032] vfs_kern_mount.part.0+0x68/0x470 [ 33.621508] do_mount+0x115c/0x2f50 [ 33.625119] ? cmp_ex_sort+0xc0/0xc0 [ 33.628813] ? __do_page_fault+0x180/0xd60 [ 33.633031] ? copy_mount_string+0x40/0x40 [ 33.637248] ? copy_mount_options+0x1cd/0x380 [ 33.641826] ? memset+0x20/0x40 [ 33.645108] ? copy_mount_options+0x26f/0x380 [ 33.649582] ksys_mount+0xcf/0x130 [ 33.653112] __x64_sys_mount+0xba/0x150 [ 33.657069] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.661636] do_syscall_64+0xf9/0x620 [ 33.665421] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.670589] RIP: 0033:0x7f05a17ac68a [ 33.674282] 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 [ 33.693164] RSP: 002b:00007ffcf09e15a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.700851] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f05a17ac68a [ 33.708101] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffcf09e15c0 [ 33.715393] RBP: 00007ffcf09e15c0 R08: 00007ffcf09e1600 R09: 0000555556bdd2c0 [ 33.722641] R10: 0000000000000080 R11: 0000000000000286 R12: 0000000000000004 [ 33.729888] R13: 00007ffcf09e1600 R14: 000000000000003a R15: 0000000020000770 [ 33.737384] kasan: CONFIG_KASAN_INLINE enabled [ 33.741964] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.749409] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.755644] CPU: 0 PID: 8092 Comm: syz-executor882 Not tainted 4.19.211-syzkaller #0 [ 33.763517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.772947] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.778639] 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 [ 33.797520] RSP: 0018:ffff888092aef650 EFLAGS: 00010246 [ 33.802861] RAX: 0000000000000000 RBX: ffff88808e595098 RCX: 0000000000000000 [ 33.810111] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808e595158 [ 33.817367] RBP: ffff888092aef738 R08: 0000000000000001 R09: 0000000000000000 [ 33.824615] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 33.831863] R13: 1ffff1101255decb R14: ffff88808e5950d0 R15: 0000000000000001 [ 33.839116] FS: 0000555556bdd300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 33.847324] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.853194] CR2: 000055bac9508160 CR3: 000000009777c000 CR4: 00000000003406f0 [ 33.860461] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.867717] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.874968] Call Trace: [ 33.877542] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.881847] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.887537] ? save_trace+0xd6/0x290 [ 33.891231] ? nilfs_mdt_write_page+0x280/0x280 [ 33.895885] nilfs_mdt_read_block+0x96/0x3e0 [ 33.900278] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.906146] ? mark_held_locks+0xf0/0xf0 [ 33.910196] nilfs_mdt_get_block+0xe6/0xd40 [ 33.914505] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.919159] ? lock_downgrade+0x720/0x720 [ 33.923304] ? lock_acquire+0x170/0x3c0 [ 33.927273] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.932020] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.936588] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.941763] ? nilfs_iget+0x1cf/0x860 [ 33.945548] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.950545] nilfs_iget+0x204/0x860 [ 33.954171] ? nilfs_iget_locked+0xd0/0xd0 [ 33.958388] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.963311] ? wait_woken+0x250/0x250 [ 33.967122] ? nilfs_mount+0x9df/0xe70 [ 33.970995] nilfs_get_root_dentry+0x26/0x250 [ 33.975483] nilfs_mount+0xac8/0xe70 [ 33.979180] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.984093] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.989090] ? pcpu_alloc+0xc9/0x1190 [ 33.992994] ? alloc_pages_current+0x19b/0x2a0 [ 33.997558] mount_fs+0xa3/0x310 [ 34.000907] vfs_kern_mount.part.0+0x68/0x470 [ 34.005387] do_mount+0x115c/0x2f50 [ 34.008998] ? cmp_ex_sort+0xc0/0xc0 [ 34.012697] ? __do_page_fault+0x180/0xd60 [ 34.016916] ? copy_mount_string+0x40/0x40 [ 34.021221] ? copy_mount_options+0x1cd/0x380 [ 34.025700] ? memset+0x20/0x40 [ 34.029016] ? copy_mount_options+0x26f/0x380 [ 34.033503] ksys_mount+0xcf/0x130 [ 34.037037] __x64_sys_mount+0xba/0x150 [ 34.041002] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.045568] do_syscall_64+0xf9/0x620 [ 34.049352] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.054523] RIP: 0033:0x7f05a17ac68a [ 34.058221] 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 [ 34.077101] RSP: 002b:00007ffcf09e15a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.084876] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f05a17ac68a [ 34.092126] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffcf09e15c0 [ 34.099381] RBP: 00007ffcf09e15c0 R08: 00007ffcf09e1600 R09: 0000555556bdd2c0 [ 34.106637] R10: 0000000000000080 R11: 0000000000000286 R12: 0000000000000004 [ 34.113885] R13: 00007ffcf09e1600 R14: 000000000000003a R15: 0000000020000770 [ 34.121137] Modules linked in: [ 34.124657] ---[ end trace 82ce85a880a8620e ]--- [ 34.129425] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 34.135639] 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 [ 34.154601] RSP: 0018:ffff888092aef650 EFLAGS: 00010246 [ 34.159966] RAX: 0000000000000000 RBX: ffff88808e595098 RCX: 0000000000000000 [ 34.167270] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808e595158 [ 34.174589] RBP: ffff888092aef738 R08: 0000000000000001 R09: 0000000000000000 [ 34.181849] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 34.189169] R13: 1ffff1101255decb R14: ffff88808e5950d0 R15: 0000000000000001 [ 34.196493] FS: 0000555556bdd300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.204750] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.210631] CR2: 000055bac9508160 CR3: 000000009777c000 CR4: 00000000003406f0 [ 34.217938] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.225256] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.232562] Kernel panic - not syncing: Fatal exception [ 34.238112] Kernel Offset: disabled [ 34.241725] Rebooting in 86400 seconds..