[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.102' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.254502] INFO: trying to register non-static key. [ 30.258351] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 30.259728] the code is fine but needs lockdep annotation. [ 30.275126] turning off the locking correctness validator. [ 30.280744] CPU: 1 PID: 7982 Comm: syz-executor225 Not tainted 4.14.295-syzkaller #0 [ 30.288606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 30.297940] Call Trace: [ 30.300512] dump_stack+0x1b2/0x281 [ 30.304120] register_lock_class+0x389/0x1180 [ 30.308592] ? __switch_to_xtra+0x93/0x12f0 [ 30.312891] ? static_obj+0x50/0x50 [ 30.316493] __lock_acquire+0x167/0x3f20 [ 30.320559] ? _raw_spin_unlock_irq+0x5a/0x80 [ 30.325040] ? finish_task_switch+0x178/0x610 [ 30.329545] ? finish_task_switch+0x14d/0x610 [ 30.334034] ? __schedule+0x893/0x1de0 [ 30.337906] ? trace_hardirqs_on+0x10/0x10 [ 30.342122] ? mark_held_locks+0xa6/0xf0 [ 30.346162] ? retint_kernel+0x2d/0x2d [ 30.350024] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 30.355018] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.359748] lock_acquire+0x170/0x3f0 [ 30.363527] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 30.368607] down_read+0x36/0x80 [ 30.371947] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 30.377028] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 30.381934] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 30.386232] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 30.391923] ? nilfs_mdt_write_page+0x250/0x250 [ 30.396569] nilfs_mdt_read_block+0x7c/0x320 [ 30.400970] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 30.406847] ? __schedule+0x893/0x1de0 [ 30.410720] nilfs_mdt_get_block+0xc7/0xb90 [ 30.415024] ? io_schedule_timeout+0x140/0x140 [ 30.419591] ? nilfs_mdt_read_block+0x320/0x320 [ 30.424239] ? ___preempt_schedule+0x16/0x18 [ 30.428674] nilfs_palloc_get_block+0xb2/0x250 [ 30.433236] nilfs_palloc_get_entry_block+0x17d/0x230 [ 30.438402] ? nilfs_iget+0x18e/0x810 [ 30.442180] nilfs_ifile_get_inode_block+0xb4/0x150 [ 30.447173] nilfs_iget+0x1c2/0x810 [ 30.450903] ? nilfs_iget_locked+0xb0/0xb0 [ 30.455126] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 30.460055] ? nilfs_detach_log_writer+0x980/0x980 [ 30.465080] ? wait_woken+0x230/0x230 [ 30.468861] nilfs_get_root_dentry+0x24/0x1f0 [ 30.473336] nilfs_mount+0x984/0xd00 [ 30.477041] ? nilfs_attach_checkpoint+0x420/0x420 [ 30.481957] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.487389] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.492390] ? alloc_pages_current+0x15d/0x260 [ 30.496952] ? __lockdep_init_map+0x100/0x560 [ 30.501428] mount_fs+0x92/0x2a0 [ 30.504774] vfs_kern_mount.part.0+0x5b/0x470 [ 30.509265] do_mount+0xe65/0x2a30 [ 30.512792] ? copy_mount_string+0x40/0x40 [ 30.517010] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.522095] ? copy_mnt_ns+0xa30/0xa30 [ 30.525962] ? copy_mount_options+0x1fa/0x2f0 [ 30.530436] ? copy_mnt_ns+0xa30/0xa30 [ 30.534303] SyS_mount+0xa8/0x120 [ 30.537733] ? copy_mnt_ns+0xa30/0xa30 [ 30.541599] do_syscall_64+0x1d5/0x640 [ 30.545557] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.550722] RIP: 0033:0x7f7037c3e7ca [ 30.554411] RSP: 002b:00007fff8d4ba1c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 30.562099] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7037c3e7ca [ 30.569479] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff8d4ba1e0 [ 30.576865] RBP: 00007fff8d4ba1e0 R08: 00007fff8d4ba220 R09: 000055555707f2c0 [ 30.584111] R10: 0000000000000008 R11: 0000000000000286 R12: 0000000000000004 [ 30.591358] R13: 00007fff8d4ba220 R14: 000000000000003b R15: 0000000020000788 [ 30.598899] kasan: CONFIG_KASAN_INLINE enabled [ 30.603469] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.611078] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 30.617308] Modules linked in: [ 30.620752] CPU: 1 PID: 7982 Comm: syz-executor225 Not tainted 4.14.295-syzkaller #0 [ 30.628614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 30.637964] task: ffff8880b37e83c0 task.stack: ffff888092540000 [ 30.644015] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 30.649705] RSP: 0018:ffff888092547750 EFLAGS: 00010246 [ 30.655056] RAX: 0000000000000000 RBX: ffff88808df06098 RCX: 0000000000000000 [ 30.662304] RDX: dffffc0000000000 RSI: 1ffff110124a8e93 RDI: ffff88808df06158 [ 30.669573] RBP: ffff888092547818 R08: 0000000000000001 R09: 0000000000000000 [ 30.676820] R10: 0000000000000001 R11: ffff8880b37e83c0 R12: 0000000000000002 [ 30.684119] R13: 1ffff110124a8eeb R14: ffff88808df060d0 R15: 0000000000000001 [ 30.691370] FS: 000055555707f300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 30.699576] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.705446] CR2: 00000000200000c4 CR3: 00000000a0ee6000 CR4: 00000000003406e0 [ 30.712706] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.719959] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.727209] Call Trace: [ 30.729780] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 30.734098] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 30.739790] ? nilfs_mdt_write_page+0x250/0x250 [ 30.744440] nilfs_mdt_read_block+0x7c/0x320 [ 30.748827] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 30.754692] ? __schedule+0x893/0x1de0 [ 30.758559] nilfs_mdt_get_block+0xc7/0xb90 [ 30.762856] ? io_schedule_timeout+0x140/0x140 [ 30.767414] ? nilfs_mdt_read_block+0x320/0x320 [ 30.772060] ? ___preempt_schedule+0x16/0x18 [ 30.776446] nilfs_palloc_get_block+0xb2/0x250 [ 30.781026] nilfs_palloc_get_entry_block+0x17d/0x230 [ 30.786190] ? nilfs_iget+0x18e/0x810 [ 30.789966] nilfs_ifile_get_inode_block+0xb4/0x150 [ 30.795084] nilfs_iget+0x1c2/0x810 [ 30.798700] ? nilfs_iget_locked+0xb0/0xb0 [ 30.802919] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 30.807837] ? nilfs_detach_log_writer+0x980/0x980 [ 30.812761] ? wait_woken+0x230/0x230 [ 30.816566] nilfs_get_root_dentry+0x24/0x1f0 [ 30.821041] nilfs_mount+0x984/0xd00 [ 30.824738] ? nilfs_attach_checkpoint+0x420/0x420 [ 30.829646] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.835077] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.840074] ? alloc_pages_current+0x15d/0x260 [ 30.844635] ? __lockdep_init_map+0x100/0x560 [ 30.849109] mount_fs+0x92/0x2a0 [ 30.852480] vfs_kern_mount.part.0+0x5b/0x470 [ 30.857005] do_mount+0xe65/0x2a30 [ 30.860529] ? copy_mount_string+0x40/0x40 [ 30.864743] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.869735] ? copy_mnt_ns+0xa30/0xa30 [ 30.873599] ? copy_mount_options+0x1fa/0x2f0 [ 30.878088] ? copy_mnt_ns+0xa30/0xa30 [ 30.881952] SyS_mount+0xa8/0x120 [ 30.885383] ? copy_mnt_ns+0xa30/0xa30 [ 30.889249] do_syscall_64+0x1d5/0x640 [ 30.893118] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.898372] RIP: 0033:0x7f7037c3e7ca [ 30.902059] RSP: 002b:00007fff8d4ba1c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 30.909750] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7037c3e7ca [ 30.917015] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff8d4ba1e0 [ 30.924360] RBP: 00007fff8d4ba1e0 R08: 00007fff8d4ba220 R09: 000055555707f2c0 [ 30.931613] R10: 0000000000000008 R11: 0000000000000286 R12: 0000000000000004 [ 30.938867] R13: 00007fff8d4ba220 R14: 000000000000003b R15: 0000000020000788 [ 30.946123] 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 [ 30.965203] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888092547750 [ 30.972597] ---[ end trace 6bcfd802f43ce7e3 ]--- [ 30.977346] Kernel panic - not syncing: Fatal exception [ 30.982862] Kernel Offset: disabled [ 30.986483] Rebooting in 86400 seconds..