[  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 '10.128.1.107' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [   38.953395] ------------[ cut here ]------------
[   38.958655] WARNING: CPU: 1 PID: 8219 at fs/udf/truncate.c:226 udf_truncate_extents.cold+0x11/0x18
[   38.967752] Kernel panic - not syncing: panic_on_warn set ...
[   38.967752] 
[   38.975109] CPU: 1 PID: 8219 Comm: syz-executor140 Not tainted 4.19.211-syzkaller #0
[   38.982965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
[   38.992304] Call Trace:
[   38.994874]  dump_stack+0x1fc/0x2ef
[   38.998483]  panic+0x26a/0x50e
[   39.001656]  ? __warn_printk+0xf3/0xf3
[   39.005524]  ? udf_truncate_extents.cold+0x11/0x18
[   39.010433]  ? __probe_kernel_read+0x130/0x1b0
[   39.014994]  ? __warn.cold+0x5/0x5a
[   39.018598]  ? __warn+0xe4/0x200
[   39.021945]  ? udf_truncate_extents.cold+0x11/0x18
[   39.026851]  __warn.cold+0x20/0x5a
[   39.030369]  ? io_schedule_timeout+0x140/0x140
[   39.034929]  ? udf_truncate_extents.cold+0x11/0x18
[   39.039838]  report_bug+0x262/0x2b0
[   39.043444]  do_error_trap+0x1d7/0x310
[   39.047310]  ? math_error+0x310/0x310
[   39.051089]  ? __irq_work_queue_local+0x101/0x160
[   39.055909]  ? irq_work_queue+0x29/0x80
[   39.059863]  ? error_entry+0x72/0xd0
[   39.063554]  ? trace_hardirqs_off_caller+0x6e/0x210
[   39.068552]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.073376]  invalid_op+0x14/0x20
[   39.076811] RIP: 0010:udf_truncate_extents.cold+0x11/0x18
[   39.082324] Code: 89 df 48 c7 c6 40 a9 9a 88 e8 ac f9 ff ff 41 bc ea ff ff ff e9 96 57 78 fa e8 b0 a9 69 f9 48 c7 c7 60 b4 9a 88 e8 0f db fa ff <0f> 0b e9 81 78 78 fa e8 98 a9 69 f9 48 c7 c6 40 ba 9a 88 48 c7 c7
[   39.101201] RSP: 0018:ffff8880902a7948 EFLAGS: 00010286
[   39.106541] RAX: 0000000000000024 RBX: ffff88808ad1c670 RCX: 0000000000000000
[   39.113786] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012054f1b
[   39.121031] RBP: ffff8880902a7a30 R08: 0000000000000024 R09: 0000000000000000
[   39.128275] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880902a79f0
[   39.135519] R13: 0000000000000200 R14: 00000000000000ff R15: ffff8880901faa40
[   39.142774]  ? vprintk_func+0x81/0x180
[   39.146642]  ? udf_truncate_extents.cold+0x11/0x18
[   39.151550]  ? lock_downgrade+0x720/0x720
[   39.155683]  ? udf_discard_prealloc+0x690/0x690
[   39.160330]  ? udf_write_failed.isra.0+0x173/0x1d0
[   39.165243]  ? udf_write_failed.isra.0+0xd4/0x1d0
[   39.170068]  udf_write_failed.isra.0+0x17b/0x1d0
[   39.174806]  udf_write_begin+0x89/0xa0
[   39.178674]  generic_perform_write+0x1f8/0x4d0
[   39.183245]  ? filemap_page_mkwrite+0x2f0/0x2f0
[   39.187892]  ? current_time+0x1c0/0x1c0
[   39.191845]  ? lock_downgrade+0x720/0x720
[   39.195969]  ? lock_acquire+0x170/0x3c0
[   39.199921]  __generic_file_write_iter+0x24b/0x610
[   39.204833]  udf_file_write_iter+0x2d4/0x4e0
[   39.209236]  ? iov_iter_init+0xb8/0x1d0
[   39.213191]  __vfs_write+0x51b/0x770
[   39.216885]  ? kernel_read+0x110/0x110
[   39.220754]  ? check_preemption_disabled+0x41/0x280
[   39.225753]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   39.230748]  vfs_write+0x1f3/0x540
[   39.234267]  ksys_write+0x12b/0x2a0
[   39.237873]  ? __ia32_sys_read+0xb0/0xb0
[   39.241913]  ? trace_hardirqs_off_caller+0x6e/0x210
[   39.246906]  ? do_syscall_64+0x21/0x620
[   39.250860]  do_syscall_64+0xf9/0x620
[   39.254641]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   39.259806] RIP: 0033:0x7f5555724fa9
[   39.263498] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   39.282376] RSP: 002b:00007f55556d02f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   39.290061] RAX: ffffffffffffffda RBX: 00007f55557ab4a0 RCX: 00007f5555724fa9
[   39.297315] RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000003
[   39.304566] RBP: 00007f55557770c8 R08: 0000000000000000 R09: 0000000000000000
[   39.311813] R10: 0000000000000000 R11: 0000000000000246 R12: 0c7e49dacbccbe94
[   39.319063] R13: 0030656c69662f2e R14: 632e79726f6d656d R15: 00007f55557ab4a8
[   39.326622] Kernel Offset: disabled
[   39.330281] Rebooting in 86400 seconds..