[ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ 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 '10.128.1.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.022634] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 33.029663] INFO: trying to register non-static key. [ 33.037532] The code is fine but needs lockdep annotation, or maybe [ 33.043912] you didn't initialize this object before use? [ 33.049528] turning off the locking correctness validator. [ 33.055132] CPU: 1 PID: 8090 Comm: syz-executor401 Not tainted 4.19.211-syzkaller #0 [ 33.062987] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.072418] Call Trace: [ 33.074992] dump_stack+0x1fc/0x2ef [ 33.078601] register_lock_class+0xe82/0x11c0 [ 33.083074] ? static_obj+0x50/0x50 [ 33.086680] __lock_acquire+0x17d/0x3ff0 [ 33.090716] ? __lock_acquire+0x6de/0x3ff0 [ 33.094933] ? mark_held_locks+0xf0/0xf0 [ 33.098972] ? mark_held_locks+0xf0/0xf0 [ 33.103023] ? lock_downgrade+0x720/0x720 [ 33.107152] ? lock_acquire+0x170/0x3c0 [ 33.111117] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 33.116034] ? check_preemption_disabled+0x41/0x280 [ 33.121030] ? check_preemption_disabled+0x41/0x280 [ 33.126024] ? alloc_buffer_head+0x20/0x130 [ 33.130327] lock_acquire+0x170/0x3c0 [ 33.134110] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.139198] down_read+0x36/0x80 [ 33.142543] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.147620] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.152535] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.156855] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.162543] ? save_trace+0xd6/0x290 [ 33.166235] ? nilfs_mdt_write_page+0x280/0x280 [ 33.170880] nilfs_mdt_read_block+0x96/0x3e0 [ 33.175267] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.181215] ? mark_held_locks+0xf0/0xf0 [ 33.185255] nilfs_mdt_get_block+0xe6/0xd40 [ 33.189554] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.194197] ? lock_downgrade+0x720/0x720 [ 33.198320] ? lock_acquire+0x170/0x3c0 [ 33.202268] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.206999] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.211555] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.216720] ? nilfs_iget+0x1cf/0x860 [ 33.220496] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.225488] nilfs_iget+0x204/0x860 [ 33.229090] ? nilfs_iget_locked+0xd0/0xd0 [ 33.233301] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.238210] ? wait_woken+0x250/0x250 [ 33.241986] nilfs_get_root_dentry+0x26/0x250 [ 33.246458] nilfs_mount+0xac8/0xe70 [ 33.250150] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.255056] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.260046] ? pcpu_alloc+0xc9/0x1190 [ 33.263830] ? alloc_pages_current+0x19b/0x2a0 [ 33.268394] mount_fs+0xa3/0x310 [ 33.271736] vfs_kern_mount.part.0+0x68/0x470 [ 33.276209] do_mount+0x115c/0x2f50 [ 33.279814] ? lock_acquire+0x170/0x3c0 [ 33.283771] ? check_preemption_disabled+0x41/0x280 [ 33.288774] ? copy_mount_string+0x40/0x40 [ 33.292984] ? copy_mount_options+0x59/0x380 [ 33.297370] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.302371] ? kmem_cache_alloc_trace+0x323/0x380 [ 33.307190] ? copy_mount_options+0x26f/0x380 [ 33.311660] ksys_mount+0xcf/0x130 [ 33.315177] __x64_sys_mount+0xba/0x150 [ 33.319129] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.323685] do_syscall_64+0xf9/0x620 [ 33.327466] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.332634] RIP: 0033:0x7f95a0c2159a [ 33.336324] 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 [ 33.355202] RSP: 002b:00007fffb352fd48 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.362969] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f95a0c2159a [ 33.370212] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffb352fd60 [ 33.377458] RBP: 00007fffb352fd60 R08: 00007fffb352fda0 R09: 0000555556d872c0 [ 33.384701] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.391945] R13: 00007fffb352fda0 R14: 000000000000003b R15: 0000000020000788 [ 33.400078] kasan: CONFIG_KASAN_INLINE enabled [ 33.404684] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.412039] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.418269] CPU: 1 PID: 8090 Comm: syz-executor401 Not tainted 4.19.211-syzkaller #0 [ 33.426132] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.435471] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.441157] 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 [ 33.460050] RSP: 0018:ffff8880a08af650 EFLAGS: 00010246 [ 33.465390] RAX: 0000000000000000 RBX: ffff88808cb59098 RCX: 0000000000000000 [ 33.472635] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808cb59158 [ 33.479879] RBP: ffff8880a08af738 R08: 0000000000000001 R09: 0000000000000000 [ 33.487131] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 33.494391] R13: 1ffff11014115ecb R14: ffff88808cb590d0 R15: 0000000000000001 [ 33.501640] FS: 0000555556d87300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 33.509843] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.515702] CR2: 00005595b64271c0 CR3: 00000000a4ab1000 CR4: 00000000003406e0 [ 33.522953] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.530202] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.537447] Call Trace: [ 33.540026] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.544328] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.550015] ? save_trace+0xd6/0x290 [ 33.553707] ? nilfs_mdt_write_page+0x280/0x280 [ 33.558363] nilfs_mdt_read_block+0x96/0x3e0 [ 33.562760] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.568624] ? mark_held_locks+0xf0/0xf0 [ 33.572663] nilfs_mdt_get_block+0xe6/0xd40 [ 33.576972] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.581623] ? lock_downgrade+0x720/0x720 [ 33.585754] ? lock_acquire+0x170/0x3c0 [ 33.589703] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.594434] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.598997] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.604166] ? nilfs_iget+0x1cf/0x860 [ 33.607940] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.612950] nilfs_iget+0x204/0x860 [ 33.616554] ? nilfs_iget_locked+0xd0/0xd0 [ 33.620767] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.625673] ? wait_woken+0x250/0x250 [ 33.629467] nilfs_get_root_dentry+0x26/0x250 [ 33.633945] nilfs_mount+0xac8/0xe70 [ 33.637654] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.642573] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.647659] ? pcpu_alloc+0xc9/0x1190 [ 33.651444] ? alloc_pages_current+0x19b/0x2a0 [ 33.656010] mount_fs+0xa3/0x310 [ 33.659362] vfs_kern_mount.part.0+0x68/0x470 [ 33.663852] do_mount+0x115c/0x2f50 [ 33.667464] ? lock_acquire+0x170/0x3c0 [ 33.671420] ? check_preemption_disabled+0x41/0x280 [ 33.676851] ? copy_mount_string+0x40/0x40 [ 33.681067] ? copy_mount_options+0x59/0x380 [ 33.685459] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.690456] ? kmem_cache_alloc_trace+0x323/0x380 [ 33.695339] ? copy_mount_options+0x26f/0x380 [ 33.699813] ksys_mount+0xcf/0x130 [ 33.703356] __x64_sys_mount+0xba/0x150 [ 33.707308] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.711866] do_syscall_64+0xf9/0x620 [ 33.715644] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.720810] RIP: 0033:0x7f95a0c2159a [ 33.724501] 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 [ 33.743375] RSP: 002b:00007fffb352fd48 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.751056] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f95a0c2159a [ 33.758302] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffb352fd60 [ 33.765562] RBP: 00007fffb352fd60 R08: 00007fffb352fda0 R09: 0000555556d872c0 [ 33.772809] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.780052] R13: 00007fffb352fda0 R14: 000000000000003b R15: 0000000020000788 [ 33.787298] Modules linked in: [ 33.790942] ---[ end trace 096b5f9752c4f6ad ]--- [ 33.795760] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.801473] 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 [ 33.820462] RSP: 0018:ffff8880a08af650 EFLAGS: 00010246 [ 33.825897] RAX: 0000000000000000 RBX: ffff88808cb59098 RCX: 0000000000000000 [ 33.833146] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808cb59158 [ 33.840427] RBP: ffff8880a08af738 R08: 0000000000000001 R09: 0000000000000000 [ 33.847729] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 33.855027] R13: 1ffff11014115ecb R14: ffff88808cb590d0 R15: 0000000000000001 [ 33.862287] FS: 0000555556d87300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 33.870529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.876451] CR2: 00005595b64271c0 CR3: 00000000a4ab1000 CR4: 00000000003406e0 [ 33.883748] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.891010] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.898297] Kernel panic - not syncing: Fatal exception [ 33.903909] Kernel Offset: disabled [ 33.907525] Rebooting in 86400 seconds..