[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.1.57' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.947967] INFO: trying to register non-static key. [ 26.953085] the code is fine but needs lockdep annotation. [ 26.956711] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 26.958694] turning off the locking correctness validator. [ 26.974074] CPU: 1 PID: 7986 Comm: syz-executor428 Not tainted 4.14.295-syzkaller #0 [ 26.981925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 26.991277] Call Trace: [ 26.993850] dump_stack+0x1b2/0x281 [ 26.997472] register_lock_class+0x389/0x1180 [ 27.001948] ? static_obj+0x50/0x50 [ 27.005552] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 27.010887] ? save_trace+0xd6/0x290 [ 27.014574] __lock_acquire+0x167/0x3f20 [ 27.018608] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 27.023595] ? trace_hardirqs_on+0x10/0x10 [ 27.027813] ? trace_hardirqs_on+0x10/0x10 [ 27.032019] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.037441] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.042491] ? alloc_buffer_head+0x20/0x110 [ 27.046793] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.052231] lock_acquire+0x170/0x3f0 [ 27.056016] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.061103] down_read+0x36/0x80 [ 27.064446] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.069525] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.074443] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.078750] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.084450] ? nilfs_mdt_write_page+0x250/0x250 [ 27.089101] nilfs_mdt_read_block+0x7c/0x320 [ 27.093496] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.099380] ? __lock_acquire+0x2190/0x3f20 [ 27.103687] nilfs_mdt_get_block+0xc7/0xb90 [ 27.107987] ? nilfs_mdt_read_block+0x320/0x320 [ 27.112664] ? lock_downgrade+0x740/0x740 [ 27.116798] nilfs_palloc_get_block+0xb2/0x250 [ 27.121400] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.126569] ? nilfs_iget+0x18e/0x810 [ 27.130344] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.135350] nilfs_iget+0x1c2/0x810 [ 27.139054] ? nilfs_iget_locked+0xb0/0xb0 [ 27.143265] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.148175] ? nilfs_detach_log_writer+0x980/0x980 [ 27.153083] ? wait_woken+0x230/0x230 [ 27.156857] nilfs_get_root_dentry+0x24/0x1f0 [ 27.161334] nilfs_mount+0x984/0xd00 [ 27.165021] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.169920] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.175357] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.180356] ? alloc_pages_current+0x15d/0x260 [ 27.184921] ? __lockdep_init_map+0x100/0x560 [ 27.189393] mount_fs+0x92/0x2a0 [ 27.192738] vfs_kern_mount.part.0+0x5b/0x470 [ 27.197225] do_mount+0xe65/0x2a30 [ 27.200740] ? retint_kernel+0x2d/0x2d [ 27.204604] ? copy_mount_string+0x40/0x40 [ 27.208813] ? memset+0x20/0x40 [ 27.212065] ? copy_mount_options+0x1fa/0x2f0 [ 27.216542] ? copy_mnt_ns+0xa30/0xa30 [ 27.220402] SyS_mount+0xa8/0x120 [ 27.223839] ? copy_mnt_ns+0xa30/0xa30 [ 27.227708] do_syscall_64+0x1d5/0x640 [ 27.231585] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.236750] RIP: 0033:0x7f79af7919da [ 27.240436] RSP: 002b:00007ffd8bfe8428 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.248115] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f79af7919da [ 27.255359] RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007ffd8bfe8440 [ 27.262601] RBP: 00007ffd8bfe8440 R08: 00007ffd8bfe8480 R09: 0000555556e032c0 [ 27.269846] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.277091] R13: 00007ffd8bfe8480 R14: 0000000000000044 R15: 0000000020000860 [ 27.285003] kasan: CONFIG_KASAN_INLINE enabled [ 27.289579] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.297223] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.303447] Modules linked in: [ 27.306625] CPU: 1 PID: 7986 Comm: syz-executor428 Not tainted 4.14.295-syzkaller #0 [ 27.314476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.323804] task: ffff88809c07e6c0 task.stack: ffff8880b3068000 [ 27.329838] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 27.335518] RSP: 0018:ffff8880b306f750 EFLAGS: 00010246 [ 27.340852] RAX: 0000000000000000 RBX: ffff88808cf48098 RCX: 0000000000000000 [ 27.348094] RDX: dffffc0000000000 RSI: 1ffff1101660de93 RDI: ffff88808cf48158 [ 27.355336] RBP: ffff8880b306f818 R08: 0000000000000001 R09: 0000000000000000 [ 27.362579] R10: 0000000000000001 R11: ffff88809c07e6c0 R12: 0000000000000002 [ 27.369822] R13: 1ffff1101660deeb R14: ffff88808cf480d0 R15: 0000000000000001 [ 27.377064] FS: 0000555556e03300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 27.385261] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.391114] CR2: 00007ffd8bfe9000 CR3: 00000000a9ad9000 CR4: 00000000003406e0 [ 27.398356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.405602] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.412843] Call Trace: [ 27.415411] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.419707] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.425391] ? nilfs_mdt_write_page+0x250/0x250 [ 27.430032] nilfs_mdt_read_block+0x7c/0x320 [ 27.434421] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.440278] ? __lock_acquire+0x2190/0x3f20 [ 27.444575] nilfs_mdt_get_block+0xc7/0xb90 [ 27.448894] ? nilfs_mdt_read_block+0x320/0x320 [ 27.453535] ? lock_downgrade+0x740/0x740 [ 27.457661] nilfs_palloc_get_block+0xb2/0x250 [ 27.462231] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.467401] ? nilfs_iget+0x18e/0x810 [ 27.471190] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.476181] nilfs_iget+0x1c2/0x810 [ 27.479786] ? nilfs_iget_locked+0xb0/0xb0 [ 27.483997] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.488898] ? nilfs_detach_log_writer+0x980/0x980 [ 27.493804] ? wait_woken+0x230/0x230 [ 27.497577] nilfs_get_root_dentry+0x24/0x1f0 [ 27.502045] nilfs_mount+0x984/0xd00 [ 27.505733] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.510635] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.516060] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.521049] ? alloc_pages_current+0x15d/0x260 [ 27.525604] ? __lockdep_init_map+0x100/0x560 [ 27.530070] mount_fs+0x92/0x2a0 [ 27.533420] vfs_kern_mount.part.0+0x5b/0x470 [ 27.537885] do_mount+0xe65/0x2a30 [ 27.541398] ? retint_kernel+0x2d/0x2d [ 27.545260] ? copy_mount_string+0x40/0x40 [ 27.549468] ? memset+0x20/0x40 [ 27.552722] ? copy_mount_options+0x1fa/0x2f0 [ 27.557192] ? copy_mnt_ns+0xa30/0xa30 [ 27.561055] SyS_mount+0xa8/0x120 [ 27.564484] ? copy_mnt_ns+0xa30/0xa30 [ 27.568345] do_syscall_64+0x1d5/0x640 [ 27.572209] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.577374] RIP: 0033:0x7f79af7919da [ 27.581059] RSP: 002b:00007ffd8bfe8428 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.588737] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f79af7919da [ 27.595980] RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007ffd8bfe8440 [ 27.603222] RBP: 00007ffd8bfe8440 R08: 00007ffd8bfe8480 R09: 0000555556e032c0 [ 27.610465] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.617707] R13: 00007ffd8bfe8480 R14: 0000000000000044 R15: 0000000020000860 [ 27.624951] 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 [ 27.644009] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880b306f750 [ 27.651419] ---[ end trace b584aab4d8c44edb ]--- [ 27.656160] Kernel panic - not syncing: Fatal exception [ 27.661670] Kernel Offset: disabled [ 27.665279] Rebooting in 86400 seconds..