[ 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 '10.128.1.57' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.106125] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 34.106297] ------------[ cut here ]------------ [ 34.120865] WARNING: CPU: 1 PID: 8098 at kernel/locking/lockdep.c:966 __bfs.part.0.cold+0x11/0xeb [ 34.129851] Kernel panic - not syncing: panic_on_warn set ... [ 34.129851] [ 34.137196] CPU: 1 PID: 8098 Comm: syz-executor300 Not tainted 4.19.211-syzkaller #0 [ 34.145144] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.154473] Call Trace: [ 34.157432] dump_stack+0x1fc/0x2ef [ 34.161835] panic+0x26a/0x50e [ 34.165004] ? __warn_printk+0xf3/0xf3 [ 34.168956] ? __bfs.part.0.cold+0x11/0xeb [ 34.173186] ? __probe_kernel_read+0x130/0x1b0 [ 34.177744] ? __warn.cold+0x5/0x5a [ 34.181349] ? __warn+0xe4/0x200 [ 34.184695] ? __bfs.part.0.cold+0x11/0xeb [ 34.188908] __warn.cold+0x20/0x5a [ 34.192423] ? __bfs.part.0.cold+0x11/0xeb [ 34.196652] report_bug+0x262/0x2b0 [ 34.200301] do_error_trap+0x1d7/0x310 [ 34.204168] ? math_error+0x310/0x310 [ 34.207946] ? __irq_work_queue_local+0x101/0x160 [ 34.212791] ? irq_work_queue+0x29/0x80 [ 34.216749] ? error_entry+0x72/0xd0 [ 34.220440] ? trace_hardirqs_off_caller+0x2c/0x210 [ 34.225442] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.230269] invalid_op+0x14/0x20 [ 34.233706] RIP: 0010:__bfs.part.0.cold+0x11/0xeb [ 34.238607] Code: 60 37 24 8d e8 bc 32 a5 f9 eb 88 48 c7 c7 40 f7 36 8d e8 ae 32 a5 f9 eb bd 48 c7 c7 60 1d 6a 88 48 89 54 24 20 e8 a6 87 00 00 <0f> 0b 49 8d 46 10 48 8b 54 24 20 48 89 44 24 18 48 c1 e8 03 42 80 [ 34.257483] RSP: 0018:ffff888092007238 EFLAGS: 00010086 [ 34.262829] RAX: 0000000000000024 RBX: ffffffff8cf7e0d0 RCX: 0000000000000000 [ 34.270080] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012400e39 [ 34.277330] RBP: ffff8880920072f0 R08: 0000000000000024 R09: 0000000000000000 [ 34.284580] R10: 0000000000000005 R11: ffffffff8c66505b R12: ffffffff814a7290 [ 34.291834] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 34.299107] ? noop_count+0x40/0x40 [ 34.302800] ? vprintk_func+0x81/0x180 [ 34.306667] ? __bfs.part.0.cold+0x11/0xeb [ 34.310895] ? is_bpf_text_address+0xfc/0x1b0 [ 34.315368] check_usage_backwards+0x17a/0x300 [ 34.319947] ? check_usage_forwards+0x310/0x310 [ 34.324591] ? __save_stack_trace+0xaf/0x190 [ 34.328993] mark_lock+0x3d8/0x1160 [ 34.332599] ? check_usage_forwards+0x310/0x310 [ 34.337247] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 34.342589] __lock_acquire+0x5cb/0x3ff0 [ 34.346629] ? mark_held_locks+0xf0/0xf0 [ 34.350667] ? mark_held_locks+0xf0/0xf0 [ 34.354706] ? lock_downgrade+0x720/0x720 [ 34.358831] ? lock_acquire+0x170/0x3c0 [ 34.362797] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 34.367715] ? check_preemption_disabled+0x41/0x280 [ 34.372712] ? check_preemption_disabled+0x41/0x280 [ 34.377704] ? alloc_buffer_head+0x20/0x130 [ 34.382002] lock_acquire+0x170/0x3c0 [ 34.385800] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.390881] down_read+0x36/0x80 [ 34.394225] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.399305] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.404218] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 34.408518] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 34.414205] ? save_trace+0xd6/0x290 [ 34.417896] ? nilfs_mdt_write_page+0x280/0x280 [ 34.422543] nilfs_mdt_read_block+0x96/0x3e0 [ 34.426929] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 34.432898] ? mark_held_locks+0xf0/0xf0 [ 34.437049] nilfs_mdt_get_block+0xe6/0xd40 [ 34.441347] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 34.445993] ? lock_downgrade+0x720/0x720 [ 34.450117] ? lock_acquire+0x170/0x3c0 [ 34.454068] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 34.458814] nilfs_palloc_get_block+0xc4/0x2b0 [ 34.463399] nilfs_palloc_get_entry_block+0x17b/0x230 [ 34.468572] ? nilfs_iget+0x1cf/0x860 [ 34.472348] nilfs_ifile_get_inode_block+0xbf/0x170 [ 34.477340] nilfs_iget+0x204/0x860 [ 34.480947] ? nilfs_iget_locked+0xd0/0xd0 [ 34.485191] ? nilfs_attach_log_writer+0x68b/0xa30 [ 34.490097] ? wait_woken+0x250/0x250 [ 34.493882] ? nilfs_mount+0x9df/0xe70 [ 34.497748] nilfs_get_root_dentry+0x26/0x250 [ 34.502222] nilfs_mount+0xac8/0xe70 [ 34.505914] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 34.510821] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.515814] ? pcpu_alloc+0xc9/0x1190 [ 34.519679] ? alloc_pages_current+0x19b/0x2a0 [ 34.524295] mount_fs+0xa3/0x310 [ 34.527660] vfs_kern_mount.part.0+0x68/0x470 [ 34.532137] do_mount+0x115c/0x2f50 [ 34.535745] ? do_raw_spin_unlock+0x171/0x230 [ 34.540222] ? check_preemption_disabled+0x41/0x280 [ 34.545213] ? copy_mount_string+0x40/0x40 [ 34.549424] ? copy_mount_options+0x59/0x380 [ 34.553820] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.558841] ? kmem_cache_alloc_trace+0x323/0x380 [ 34.563662] ? copy_mount_options+0x26f/0x380 [ 34.568138] ksys_mount+0xcf/0x130 [ 34.571657] __x64_sys_mount+0xba/0x150 [ 34.575616] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.580173] do_syscall_64+0xf9/0x620 [ 34.583957] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.589235] RIP: 0033:0x7fcc5afc76ba [ 34.592929] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 34.611978] RSP: 002b:00007fffb859eff8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.619660] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fcc5afc76ba [ 34.626917] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fffb859f010 [ 34.634163] RBP: 00007fffb859f010 R08: 00007fffb859f050 R09: 00005555573a92c0 [ 34.641410] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 34.648762] R13: 00007fffb859f050 R14: 0000000000000039 R15: 0000000020000758 [ 35.759434] Shutting down cpus with NMI [ 35.763734] Kernel Offset: disabled [ 35.767344] Rebooting in 86400 seconds..