[ 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 '10.128.1.10' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.082920] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.091139] INFO: trying to register non-static key. [ 28.102267] the code is fine but needs lockdep annotation. [ 28.107863] turning off the locking correctness validator. [ 28.113469] CPU: 0 PID: 7976 Comm: syz-executor153 Not tainted 4.14.295-syzkaller #0 [ 28.121339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.130667] Call Trace: [ 28.133231] dump_stack+0x1b2/0x281 [ 28.136946] register_lock_class+0x389/0x1180 [ 28.141421] ? static_obj+0x50/0x50 [ 28.145026] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.150365] ? save_trace+0xd6/0x290 [ 28.154063] __lock_acquire+0x167/0x3f20 [ 28.158101] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 28.163102] ? trace_hardirqs_on+0x10/0x10 [ 28.167312] ? trace_hardirqs_on+0x10/0x10 [ 28.171524] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.176951] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.181940] ? alloc_buffer_head+0x20/0x110 [ 28.186234] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.191658] lock_acquire+0x170/0x3f0 [ 28.195430] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.200505] down_read+0x36/0x80 [ 28.203842] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.208912] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.213813] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.218106] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.223798] ? nilfs_mdt_write_page+0x250/0x250 [ 28.228443] nilfs_mdt_read_block+0x7c/0x320 [ 28.232823] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.238696] ? __lock_acquire+0x2190/0x3f20 [ 28.242993] nilfs_mdt_get_block+0xc7/0xb90 [ 28.247289] ? nilfs_mdt_read_block+0x320/0x320 [ 28.251939] ? lock_downgrade+0x740/0x740 [ 28.256064] nilfs_palloc_get_block+0xb2/0x250 [ 28.260621] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.265786] ? nilfs_iget+0x18e/0x810 [ 28.269560] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.274546] nilfs_iget+0x1c2/0x810 [ 28.278145] ? nilfs_iget_locked+0xb0/0xb0 [ 28.282354] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.287264] ? nilfs_detach_log_writer+0x980/0x980 [ 28.292169] ? ___preempt_schedule+0x16/0x18 [ 28.296550] nilfs_get_root_dentry+0x24/0x1f0 [ 28.301019] nilfs_mount+0x984/0xd00 [ 28.304706] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.309624] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.315050] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.320039] ? alloc_pages_current+0x15d/0x260 [ 28.324592] ? __lockdep_init_map+0x100/0x560 [ 28.329057] mount_fs+0x92/0x2a0 [ 28.332400] vfs_kern_mount.part.0+0x5b/0x470 [ 28.336868] do_mount+0xe65/0x2a30 [ 28.340380] ? copy_mount_string+0x40/0x40 [ 28.344592] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.349593] ? copy_mnt_ns+0xa30/0xa30 [ 28.353453] ? copy_mount_options+0x1fa/0x2f0 [ 28.357919] ? copy_mnt_ns+0xa30/0xa30 [ 28.361776] SyS_mount+0xa8/0x120 [ 28.365199] ? copy_mnt_ns+0xa30/0xa30 [ 28.369057] do_syscall_64+0x1d5/0x640 [ 28.372929] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.378094] RIP: 0033:0x7f9c08f3372a [ 28.381776] RSP: 002b:00007ffc1ede5e98 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.389461] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9c08f3372a [ 28.396706] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc1ede5eb0 [ 28.403949] RBP: 00007ffc1ede5eb0 R08: 00007ffc1ede5ef0 R09: 00005555565862c0 [ 28.411190] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 28.418430] R13: 00007ffc1ede5ef0 R14: 000000000000003b R15: 0000000020000788 [ 28.426090] kasan: CONFIG_KASAN_INLINE enabled [ 28.431750] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.439106] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.445319] Modules linked in: [ 28.448503] CPU: 0 PID: 7976 Comm: syz-executor153 Not tainted 4.14.295-syzkaller #0 [ 28.456356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.465682] task: ffff8880b4fb22c0 task.stack: ffff8880916e0000 [ 28.471716] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.477394] RSP: 0018:ffff8880916e7750 EFLAGS: 00010246 [ 28.482728] RAX: 0000000000000000 RBX: ffff88808e38e098 RCX: 0000000000000000 [ 28.489973] RDX: dffffc0000000000 RSI: 1ffff110122dce93 RDI: ffff88808e38e158 [ 28.497214] RBP: ffff8880916e7818 R08: 0000000000000001 R09: 0000000000000000 [ 28.504455] R10: 0000000000000001 R11: ffff8880b4fb22c0 R12: 0000000000000002 [ 28.511695] R13: 1ffff110122dceeb R14: ffff88808e38e0d0 R15: 0000000000000001 [ 28.518940] FS: 0000555556586300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 28.527136] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.532990] CR2: 000055f8c744f7d0 CR3: 00000000ac1f2000 CR4: 00000000003406f0 [ 28.540244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.547491] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.554738] Call Trace: [ 28.557304] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.561598] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.567280] ? nilfs_mdt_write_page+0x250/0x250 [ 28.571930] nilfs_mdt_read_block+0x7c/0x320 [ 28.576309] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.582170] ? __lock_acquire+0x2190/0x3f20 [ 28.586467] nilfs_mdt_get_block+0xc7/0xb90 [ 28.590772] ? nilfs_mdt_read_block+0x320/0x320 [ 28.595411] ? lock_downgrade+0x740/0x740 [ 28.601062] nilfs_palloc_get_block+0xb2/0x250 [ 28.606336] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.611507] ? nilfs_iget+0x18e/0x810 [ 28.615285] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.620277] nilfs_iget+0x1c2/0x810 [ 28.623878] ? nilfs_iget_locked+0xb0/0xb0 [ 28.628090] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.632995] ? nilfs_detach_log_writer+0x980/0x980 [ 28.637897] ? ___preempt_schedule+0x16/0x18 [ 28.642279] nilfs_get_root_dentry+0x24/0x1f0 [ 28.646748] nilfs_mount+0x984/0xd00 [ 28.650441] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.655346] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.660770] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.665760] ? alloc_pages_current+0x15d/0x260 [ 28.670314] ? __lockdep_init_map+0x100/0x560 [ 28.674783] mount_fs+0x92/0x2a0 [ 28.678126] vfs_kern_mount.part.0+0x5b/0x470 [ 28.682594] do_mount+0xe65/0x2a30 [ 28.686108] ? copy_mount_string+0x40/0x40 [ 28.690314] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.695299] ? copy_mnt_ns+0xa30/0xa30 [ 28.699160] ? copy_mount_options+0x1fa/0x2f0 [ 28.703627] ? copy_mnt_ns+0xa30/0xa30 [ 28.707487] SyS_mount+0xa8/0x120 [ 28.710914] ? copy_mnt_ns+0xa30/0xa30 [ 28.714776] do_syscall_64+0x1d5/0x640 [ 28.718643] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.723804] RIP: 0033:0x7f9c08f3372a [ 28.727491] RSP: 002b:00007ffc1ede5e98 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.735173] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9c08f3372a [ 28.742417] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc1ede5eb0 [ 28.749659] RBP: 00007ffc1ede5eb0 R08: 00007ffc1ede5ef0 R09: 00005555565862c0 [ 28.756901] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 28.764143] R13: 00007ffc1ede5ef0 R14: 000000000000003b R15: 0000000020000788 [ 28.771387] 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 [ 28.790448] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880916e7750 [ 28.797881] ---[ end trace 4deefc7caf11fce3 ]--- [ 28.802797] Kernel panic - not syncing: Fatal exception [ 28.808306] Kernel Offset: disabled [ 28.811911] Rebooting in 86400 seconds..