[ 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 '10.128.0.147' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.110893] INFO: trying to register non-static key. [ 28.116008] the code is fine but needs lockdep annotation. [ 28.119473] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.121617] turning off the locking correctness validator. [ 28.136998] CPU: 1 PID: 7970 Comm: syz-executor120 Not tainted 4.14.295-syzkaller #0 [ 28.144855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.154181] Call Trace: [ 28.156753] dump_stack+0x1b2/0x281 [ 28.160364] register_lock_class+0x389/0x1180 [ 28.164834] ? trace_hardirqs_on+0x10/0x10 [ 28.169043] ? static_obj+0x50/0x50 [ 28.172645] __lock_acquire+0x167/0x3f20 [ 28.176680] ? mark_held_locks+0xa6/0xf0 [ 28.180721] ? _raw_spin_unlock_irq+0x24/0x80 [ 28.185210] ? trace_hardirqs_on+0x10/0x10 [ 28.189424] ? trace_hardirqs_on+0x10/0x10 [ 28.193633] ? _raw_spin_unlock_irq+0x5a/0x80 [ 28.198186] ? finish_task_switch+0x178/0x610 [ 28.202655] ? finish_task_switch+0x14d/0x610 [ 28.207238] ? __schedule+0x893/0x1de0 [ 28.211108] lock_acquire+0x170/0x3f0 [ 28.214946] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.220024] down_read+0x36/0x80 [ 28.223365] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.228440] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.233345] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.237644] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.243330] ? nilfs_mdt_write_page+0x250/0x250 [ 28.247972] nilfs_mdt_read_block+0x7c/0x320 [ 28.252357] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.258217] ? finish_task_switch+0x178/0x610 [ 28.262684] ? finish_task_switch+0x14d/0x610 [ 28.267152] nilfs_mdt_get_block+0xc7/0xb90 [ 28.271453] ? nilfs_mdt_read_block+0x320/0x320 [ 28.276095] ? lock_downgrade+0x740/0x740 [ 28.280216] nilfs_palloc_get_block+0xb2/0x250 [ 28.284772] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.290027] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.295020] nilfs_iget+0x1c2/0x810 [ 28.298622] ? nilfs_iget_locked+0xb0/0xb0 [ 28.302832] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.307752] ? nilfs_detach_log_writer+0x980/0x980 [ 28.312662] ? wait_woken+0x230/0x230 [ 28.316440] nilfs_get_root_dentry+0x24/0x1f0 [ 28.320911] nilfs_mount+0x984/0xd00 [ 28.324601] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.329507] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.334931] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.339923] ? alloc_pages_current+0x15d/0x260 [ 28.344478] ? __lockdep_init_map+0x100/0x560 [ 28.348946] mount_fs+0x92/0x2a0 [ 28.352290] vfs_kern_mount.part.0+0x5b/0x470 [ 28.356761] do_mount+0xe65/0x2a30 [ 28.360274] ? retint_kernel+0x2d/0x2d [ 28.364134] ? copy_mount_string+0x40/0x40 [ 28.368343] ? memset+0x20/0x40 [ 28.371596] ? copy_mount_options+0x1fa/0x2f0 [ 28.376065] ? copy_mnt_ns+0xa30/0xa30 [ 28.379926] SyS_mount+0xa8/0x120 [ 28.383352] ? copy_mnt_ns+0xa30/0xa30 [ 28.387213] do_syscall_64+0x1d5/0x640 [ 28.391076] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.396239] RIP: 0033:0x7f517d6916ca [ 28.399925] RSP: 002b:00007ffcfe205068 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.407605] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f517d6916ca [ 28.414867] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcfe205080 [ 28.422109] RBP: 00007ffcfe205080 R08: 00007ffcfe2050c0 R09: 0000555555e902c0 [ 28.429352] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.436595] R13: 00007ffcfe2050c0 R14: 000000000000003b R15: 0000000020000788 [ 28.444321] kasan: CONFIG_KASAN_INLINE enabled [ 28.448897] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.456463] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.462685] Modules linked in: [ 28.465865] CPU: 1 PID: 7970 Comm: syz-executor120 Not tainted 4.14.295-syzkaller #0 [ 28.473736] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.483067] task: ffff8880b46c8340 task.stack: ffff8880b4308000 [ 28.489112] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.494797] RSP: 0018:ffff8880b430f750 EFLAGS: 00010246 [ 28.500136] RAX: 0000000000000000 RBX: ffff88808e341098 RCX: 0000000000000000 [ 28.507387] RDX: dffffc0000000000 RSI: 1ffff11016861e93 RDI: ffff88808e341158 [ 28.514638] RBP: ffff8880b430f818 R08: 0000000000000001 R09: 0000000000000000 [ 28.521887] R10: 0000000000000001 R11: ffff8880b46c8340 R12: 0000000000000002 [ 28.529133] R13: 1ffff11016861eeb R14: ffff88808e3410d0 R15: 0000000000000001 [ 28.536378] FS: 0000555555e90300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.544577] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.550434] CR2: 00007ffcfe206000 CR3: 00000000a9023000 CR4: 00000000003406e0 [ 28.557913] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.565157] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.572400] Call Trace: [ 28.574971] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.579272] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.584958] ? nilfs_mdt_write_page+0x250/0x250 [ 28.589602] nilfs_mdt_read_block+0x7c/0x320 [ 28.593990] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.599850] ? finish_task_switch+0x178/0x610 [ 28.604318] ? finish_task_switch+0x14d/0x610 [ 28.608814] nilfs_mdt_get_block+0xc7/0xb90 [ 28.613111] ? nilfs_mdt_read_block+0x320/0x320 [ 28.617753] ? lock_downgrade+0x740/0x740 [ 28.621880] nilfs_palloc_get_block+0xb2/0x250 [ 28.626442] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.631607] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.636599] nilfs_iget+0x1c2/0x810 [ 28.640199] ? nilfs_iget_locked+0xb0/0xb0 [ 28.644419] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.649434] ? nilfs_detach_log_writer+0x980/0x980 [ 28.654395] ? wait_woken+0x230/0x230 [ 28.658169] nilfs_get_root_dentry+0x24/0x1f0 [ 28.662794] nilfs_mount+0x984/0xd00 [ 28.666488] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.671399] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.676856] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.681853] ? alloc_pages_current+0x15d/0x260 [ 28.686419] ? __lockdep_init_map+0x100/0x560 [ 28.690890] mount_fs+0x92/0x2a0 [ 28.694237] vfs_kern_mount.part.0+0x5b/0x470 [ 28.698709] do_mount+0xe65/0x2a30 [ 28.702227] ? retint_kernel+0x2d/0x2d [ 28.706086] ? copy_mount_string+0x40/0x40 [ 28.710297] ? memset+0x20/0x40 [ 28.713574] ? copy_mount_options+0x1fa/0x2f0 [ 28.718042] ? copy_mnt_ns+0xa30/0xa30 [ 28.721905] SyS_mount+0xa8/0x120 [ 28.725419] ? copy_mnt_ns+0xa30/0xa30 [ 28.729277] do_syscall_64+0x1d5/0x640 [ 28.733137] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.738298] RIP: 0033:0x7f517d6916ca [ 28.741981] RSP: 002b:00007ffcfe205068 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.749661] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f517d6916ca [ 28.756902] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcfe205080 [ 28.764146] RBP: 00007ffcfe205080 R08: 00007ffcfe2050c0 R09: 0000555555e902c0 [ 28.771386] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.778628] R13: 00007ffcfe2050c0 R14: 000000000000003b R15: 0000000020000788 [ 28.785874] 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 [ 28.804933] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880b430f750 [ 28.812529] ---[ end trace 694def5568dc6df0 ]--- [ 28.817276] Kernel panic - not syncing: Fatal exception [ 28.822845] Kernel Offset: disabled [ 28.826457] Rebooting in 86400 seconds..