[ 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 '10.128.0.142' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.193504] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 60.193653] INFO: trying to register non-static key. [ 60.208479] the code is fine but needs lockdep annotation. [ 60.214072] turning off the locking correctness validator. [ 60.219675] CPU: 0 PID: 7962 Comm: syz-executor419 Not tainted 4.14.295-syzkaller #0 [ 60.227536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 60.236866] Call Trace: [ 60.239433] dump_stack+0x1b2/0x281 [ 60.243043] register_lock_class+0x389/0x1180 [ 60.247511] ? static_obj+0x50/0x50 [ 60.251112] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 60.256445] ? save_trace+0xd6/0x290 [ 60.260129] __lock_acquire+0x167/0x3f20 [ 60.264167] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 60.269155] ? trace_hardirqs_on+0x10/0x10 [ 60.273360] ? trace_hardirqs_on+0x10/0x10 [ 60.277742] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 60.283178] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 60.288176] ? alloc_buffer_head+0x20/0x110 [ 60.292478] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 60.297905] lock_acquire+0x170/0x3f0 [ 60.301683] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 60.306760] down_read+0x36/0x80 [ 60.310100] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 60.315177] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 60.320079] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 60.324379] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 60.330064] ? nilfs_mdt_write_page+0x250/0x250 [ 60.334709] nilfs_mdt_read_block+0x7c/0x320 [ 60.339089] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 60.344948] ? __lock_acquire+0x2190/0x3f20 [ 60.349243] nilfs_mdt_get_block+0xc7/0xb90 [ 60.353539] ? nilfs_mdt_read_block+0x320/0x320 [ 60.358180] ? lock_downgrade+0x740/0x740 [ 60.362303] nilfs_palloc_get_block+0xb2/0x250 [ 60.366862] nilfs_palloc_get_entry_block+0x17d/0x230 [ 60.372025] ? nilfs_iget+0x18e/0x810 [ 60.375801] nilfs_ifile_get_inode_block+0xb4/0x150 [ 60.380793] nilfs_iget+0x1c2/0x810 [ 60.384394] ? nilfs_iget_locked+0xb0/0xb0 [ 60.388599] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 60.393513] ? nilfs_detach_log_writer+0x980/0x980 [ 60.398422] ? wait_woken+0x230/0x230 [ 60.402205] nilfs_get_root_dentry+0x24/0x1f0 [ 60.406676] nilfs_mount+0x984/0xd00 [ 60.410364] ? nilfs_attach_checkpoint+0x420/0x420 [ 60.415277] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 60.420702] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 60.425694] ? alloc_pages_current+0x15d/0x260 [ 60.430250] ? __lockdep_init_map+0x100/0x560 [ 60.434717] mount_fs+0x92/0x2a0 [ 60.438058] vfs_kern_mount.part.0+0x5b/0x470 [ 60.442528] do_mount+0xe65/0x2a30 [ 60.446046] ? do_raw_spin_unlock+0x164/0x220 [ 60.450518] ? copy_mount_string+0x40/0x40 [ 60.454729] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 60.459719] ? copy_mnt_ns+0xa30/0xa30 [ 60.463578] ? copy_mount_options+0x1fa/0x2f0 [ 60.468047] ? copy_mnt_ns+0xa30/0xa30 [ 60.471911] SyS_mount+0xa8/0x120 [ 60.475336] ? copy_mnt_ns+0xa30/0xa30 [ 60.479199] do_syscall_64+0x1d5/0x640 [ 60.483073] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 60.488239] RIP: 0033:0x7f10a358976a [ 60.491947] RSP: 002b:00007ffe6ad15ce8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 60.499628] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f10a358976a [ 60.506890] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffe6ad15d00 [ 60.514140] RBP: 00007ffe6ad15d00 R08: 00007ffe6ad15d40 R09: 0000555556d8c2c0 [ 60.521385] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 60.528632] R13: 00007ffe6ad15d40 R14: 000000000000003a R15: 0000000020000770 [ 60.536357] kasan: CONFIG_KASAN_INLINE enabled [ 60.540927] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 60.548489] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 60.554718] Modules linked in: [ 60.557906] CPU: 0 PID: 7962 Comm: syz-executor419 Not tainted 4.14.295-syzkaller #0 [ 60.565761] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 60.575108] task: ffff8880b57f6300 task.stack: ffff888091bc0000 [ 60.581158] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 60.586952] RSP: 0018:ffff888091bc7750 EFLAGS: 00010246 [ 60.592290] RAX: 0000000000000000 RBX: ffff88808df43098 RCX: 0000000000000000 [ 60.599536] RDX: dffffc0000000000 RSI: 1ffff11012378e93 RDI: ffff88808df43158 [ 60.606786] RBP: ffff888091bc7818 R08: 0000000000000001 R09: 0000000000000000 [ 60.614030] R10: 0000000000000001 R11: ffff8880b57f6300 R12: 0000000000000002 [ 60.621273] R13: 1ffff11012378eeb R14: ffff88808df430d0 R15: 0000000000000001 [ 60.628518] FS: 0000555556d8c300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 60.636722] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.642578] CR2: 00007ffccc3dfde8 CR3: 00000000ac2e3000 CR4: 00000000003406f0 [ 60.649829] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.657072] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.664322] Call Trace: [ 60.666892] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 60.671192] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 60.676891] ? nilfs_mdt_write_page+0x250/0x250 [ 60.681539] nilfs_mdt_read_block+0x7c/0x320 [ 60.685922] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 60.691781] ? __lock_acquire+0x2190/0x3f20 [ 60.696079] nilfs_mdt_get_block+0xc7/0xb90 [ 60.700376] ? nilfs_mdt_read_block+0x320/0x320 [ 60.705020] ? lock_downgrade+0x740/0x740 [ 60.709144] nilfs_palloc_get_block+0xb2/0x250 [ 60.713703] nilfs_palloc_get_entry_block+0x17d/0x230 [ 60.718868] ? nilfs_iget+0x18e/0x810 [ 60.722648] nilfs_ifile_get_inode_block+0xb4/0x150 [ 60.727642] nilfs_iget+0x1c2/0x810 [ 60.731243] ? nilfs_iget_locked+0xb0/0xb0 [ 60.735462] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 60.740368] ? nilfs_detach_log_writer+0x980/0x980 [ 60.745272] ? wait_woken+0x230/0x230 [ 60.749049] nilfs_get_root_dentry+0x24/0x1f0 [ 60.753522] nilfs_mount+0x984/0xd00 [ 60.757209] ? nilfs_attach_checkpoint+0x420/0x420 [ 60.762114] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 60.767539] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 60.772528] ? alloc_pages_current+0x15d/0x260 [ 60.777087] ? __lockdep_init_map+0x100/0x560 [ 60.781557] mount_fs+0x92/0x2a0 [ 60.784903] vfs_kern_mount.part.0+0x5b/0x470 [ 60.789374] do_mount+0xe65/0x2a30 [ 60.792887] ? do_raw_spin_unlock+0x164/0x220 [ 60.797356] ? copy_mount_string+0x40/0x40 [ 60.801566] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 60.806559] ? copy_mnt_ns+0xa30/0xa30 [ 60.810455] ? copy_mount_options+0x1fa/0x2f0 [ 60.814925] ? copy_mnt_ns+0xa30/0xa30 [ 60.818784] SyS_mount+0xa8/0x120 [ 60.822210] ? copy_mnt_ns+0xa30/0xa30 [ 60.826074] do_syscall_64+0x1d5/0x640 [ 60.829938] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 60.835105] RIP: 0033:0x7f10a358976a [ 60.838791] RSP: 002b:00007ffe6ad15ce8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 60.846472] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f10a358976a [ 60.853717] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffe6ad15d00 [ 60.860963] RBP: 00007ffe6ad15d00 R08: 00007ffe6ad15d40 R09: 0000555556d8c2c0 [ 60.868205] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 60.875584] R13: 00007ffe6ad15d40 R14: 000000000000003a R15: 0000000020000770 [ 60.882935] 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 [ 60.902015] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888091bc7750 [ 60.909545] ---[ end trace 7106cae9b4926da8 ]--- [ 60.914441] Kernel panic - not syncing: Fatal exception [ 60.920024] Kernel Offset: disabled [ 60.923638] Rebooting in 86400 seconds..