[ 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 '10.128.10.53' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.983335] INFO: trying to register non-static key. [ 28.988444] the code is fine but needs lockdep annotation. [ 28.994037] turning off the locking correctness validator. [ 28.999648] CPU: 1 PID: 7973 Comm: syz-executor410 Not tainted 4.14.295-syzkaller #0 [ 29.000909] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 29.007507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.007510] Call Trace: [ 29.007522] dump_stack+0x1b2/0x281 [ 29.007531] register_lock_class+0x389/0x1180 [ 29.007539] ? static_obj+0x50/0x50 [ 29.040847] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 29.046180] ? save_trace+0xd6/0x290 [ 29.049867] __lock_acquire+0x167/0x3f20 [ 29.053903] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 29.058898] ? trace_hardirqs_on+0x10/0x10 [ 29.063102] ? trace_hardirqs_on+0x10/0x10 [ 29.067307] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.072728] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.077717] ? alloc_buffer_head+0x20/0x110 [ 29.082007] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.087438] lock_acquire+0x170/0x3f0 [ 29.091211] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.096299] down_read+0x36/0x80 [ 29.099638] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.104713] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.109613] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.113909] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.119591] ? nilfs_mdt_write_page+0x250/0x250 [ 29.124229] nilfs_mdt_read_block+0x7c/0x320 [ 29.128610] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.134464] ? finish_task_switch+0x178/0x610 [ 29.138930] ? finish_task_switch+0x14d/0x610 [ 29.143395] nilfs_mdt_get_block+0xc7/0xb90 [ 29.147690] ? nilfs_mdt_read_block+0x320/0x320 [ 29.152330] ? lock_downgrade+0x740/0x740 [ 29.156449] nilfs_palloc_get_block+0xb2/0x250 [ 29.161004] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.166169] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.171159] nilfs_iget+0x1c2/0x810 [ 29.174757] ? nilfs_iget_locked+0xb0/0xb0 [ 29.178962] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.183889] ? nilfs_detach_log_writer+0x980/0x980 [ 29.188794] ? wait_woken+0x230/0x230 [ 29.192566] nilfs_get_root_dentry+0x24/0x1f0 [ 29.197031] nilfs_mount+0x984/0xd00 [ 29.200716] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.205620] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.211041] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.216036] ? alloc_pages_current+0x15d/0x260 [ 29.220590] ? __lockdep_init_map+0x100/0x560 [ 29.225057] mount_fs+0x92/0x2a0 [ 29.228396] vfs_kern_mount.part.0+0x5b/0x470 [ 29.232866] do_mount+0xe65/0x2a30 [ 29.236376] ? do_raw_spin_unlock+0x164/0x220 [ 29.240843] ? copy_mount_string+0x40/0x40 [ 29.245048] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.250037] ? copy_mnt_ns+0xa30/0xa30 [ 29.253894] ? copy_mount_options+0x1fa/0x2f0 [ 29.258359] ? copy_mnt_ns+0xa30/0xa30 [ 29.262215] SyS_mount+0xa8/0x120 [ 29.265642] ? copy_mnt_ns+0xa30/0xa30 [ 29.269506] do_syscall_64+0x1d5/0x640 [ 29.273368] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.278527] RIP: 0033:0x7f7a1667963a [ 29.282213] RSP: 002b:00007ffee975ce78 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.289892] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7a1667963a [ 29.297132] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffee975ce90 [ 29.304382] RBP: 00007ffee975ce90 R08: 00007ffee975ced0 R09: 0000555555c812c0 [ 29.311638] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.318878] R13: 00007ffee975ced0 R14: 000000000000003a R15: 0000000020000770 [ 29.326740] kasan: CONFIG_KASAN_INLINE enabled [ 29.331317] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.338771] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.344984] Modules linked in: [ 29.348151] CPU: 1 PID: 7973 Comm: syz-executor410 Not tainted 4.14.295-syzkaller #0 [ 29.356001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.365327] task: ffff888097518680 task.stack: ffff8880a96e8000 [ 29.371361] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 29.377042] RSP: 0018:ffff8880a96ef750 EFLAGS: 00010246 [ 29.382376] RAX: 0000000000000000 RBX: ffff88808db94098 RCX: 0000000000000000 [ 29.389619] RDX: dffffc0000000000 RSI: 1ffff110152dde93 RDI: ffff88808db94158 [ 29.396859] RBP: ffff8880a96ef818 R08: 0000000000000001 R09: 0000000000000000 [ 29.404104] R10: 0000000000000001 R11: ffff888097518680 R12: 0000000000000002 [ 29.411347] R13: 1ffff110152ddeeb R14: ffff88808db940d0 R15: 0000000000000001 [ 29.418589] FS: 0000555555c81300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.426786] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.432643] CR2: 00007f7a16650450 CR3: 000000009c83b000 CR4: 00000000003406e0 [ 29.439896] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.447150] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.454399] Call Trace: [ 29.456973] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.461274] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.466972] ? nilfs_mdt_write_page+0x250/0x250 [ 29.471619] nilfs_mdt_read_block+0x7c/0x320 [ 29.476000] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.481854] ? finish_task_switch+0x178/0x610 [ 29.486324] ? finish_task_switch+0x14d/0x610 [ 29.490795] nilfs_mdt_get_block+0xc7/0xb90 [ 29.495093] ? nilfs_mdt_read_block+0x320/0x320 [ 29.499736] ? lock_downgrade+0x740/0x740 [ 29.503868] nilfs_palloc_get_block+0xb2/0x250 [ 29.508431] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.513597] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.518598] nilfs_iget+0x1c2/0x810 [ 29.522202] ? nilfs_iget_locked+0xb0/0xb0 [ 29.526410] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.531316] ? nilfs_detach_log_writer+0x980/0x980 [ 29.536222] ? wait_woken+0x230/0x230 [ 29.539999] nilfs_get_root_dentry+0x24/0x1f0 [ 29.544470] nilfs_mount+0x984/0xd00 [ 29.548156] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.553061] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.558482] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.563471] ? alloc_pages_current+0x15d/0x260 [ 29.568025] ? __lockdep_init_map+0x100/0x560 [ 29.572494] mount_fs+0x92/0x2a0 [ 29.575832] vfs_kern_mount.part.0+0x5b/0x470 [ 29.580300] do_mount+0xe65/0x2a30 [ 29.583810] ? do_raw_spin_unlock+0x164/0x220 [ 29.588276] ? copy_mount_string+0x40/0x40 [ 29.592495] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.597488] ? copy_mnt_ns+0xa30/0xa30 [ 29.601350] ? copy_mount_options+0x1fa/0x2f0 [ 29.605817] ? copy_mnt_ns+0xa30/0xa30 [ 29.609681] SyS_mount+0xa8/0x120 [ 29.613109] ? copy_mnt_ns+0xa30/0xa30 [ 29.616970] do_syscall_64+0x1d5/0x640 [ 29.620832] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.625992] RIP: 0033:0x7f7a1667963a [ 29.629762] RSP: 002b:00007ffee975ce78 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.637440] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7a1667963a [ 29.644684] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffee975ce90 [ 29.651929] RBP: 00007ffee975ce90 R08: 00007ffee975ced0 R09: 0000555555c812c0 [ 29.659258] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.666498] R13: 00007ffee975ced0 R14: 000000000000003a R15: 0000000020000770 [ 29.673741] 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 [ 29.692802] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880a96ef750 [ 29.700494] ---[ end trace 7743442fcf4599c0 ]--- [ 29.705335] Kernel panic - not syncing: Fatal exception [ 29.710900] Kernel Offset: disabled [ 29.714507] Rebooting in 86400 seconds..