[  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 '10.128.0.84' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.712314] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000)
[   33.740475] ------------[ cut here ]------------
[   33.745605] WARNING: CPU: 0 PID: 8115 at fs/udf/truncate.c:226 udf_truncate_extents.cold+0x11/0x18
[   33.754706] Kernel panic - not syncing: panic_on_warn set ...
[   33.754706] 
[   33.762053] CPU: 0 PID: 8115 Comm: syz-executor353 Not tainted 4.19.211-syzkaller #0
[   33.769923] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
[   33.779253] Call Trace:
[   33.781829]  dump_stack+0x1fc/0x2ef
[   33.785445]  panic+0x26a/0x50e
[   33.788634]  ? __warn_printk+0xf3/0xf3
[   33.792506]  ? udf_truncate_extents.cold+0x11/0x18
[   33.797418]  ? __probe_kernel_read+0x130/0x1b0
[   33.801979]  ? __warn.cold+0x5/0x5a
[   33.805599]  ? __warn+0xe4/0x200
[   33.808945]  ? udf_truncate_extents.cold+0x11/0x18
[   33.813869]  __warn.cold+0x20/0x5a
[   33.817393]  ? udf_truncate_extents.cold+0x11/0x18
[   33.822303]  report_bug+0x262/0x2b0
[   33.825913]  do_error_trap+0x1d7/0x310
[   33.829796]  ? math_error+0x310/0x310
[   33.833577]  ? __irq_work_queue_local+0x101/0x160
[   33.838399]  ? irq_work_queue+0x29/0x80
[   33.842356]  ? error_entry+0x72/0xd0
[   33.846053]  ? trace_hardirqs_off_caller+0x6e/0x210
[   33.851050]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.855873]  invalid_op+0x14/0x20
[   33.859308] RIP: 0010:udf_truncate_extents.cold+0x11/0x18
[   33.864820] 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
[   33.883700] RSP: 0018:ffff8880b2fb7948 EFLAGS: 00010286
[   33.889041] RAX: 0000000000000024 RBX: ffff88808b009670 RCX: 0000000000000000
[   33.896305] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10165f6f1b
[   33.903555] RBP: ffff8880b2fb7a30 R08: 0000000000000024 R09: 0000000000000000
[   33.910819] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b2fb79f0
[   33.918079] R13: 0000000000000150 R14: 00000000000000ff R15: ffff8880b0c00900
[   33.925337]  ? vprintk_func+0x81/0x180
[   33.929219]  ? udf_truncate_extents.cold+0x11/0x18
[   33.934129]  ? lock_downgrade+0x720/0x720
[   33.938258]  ? udf_discard_prealloc+0x690/0x690
[   33.942927]  ? udf_write_failed.isra.0+0x173/0x1d0
[   33.947839]  ? udf_write_failed.isra.0+0xd4/0x1d0
[   33.952666]  udf_write_failed.isra.0+0x17b/0x1d0
[   33.957411]  udf_write_begin+0x89/0xa0
[   33.961277]  ? current_time+0x13c/0x1c0
[   33.965235]  generic_perform_write+0x1f8/0x4d0
[   33.969802]  ? filemap_page_mkwrite+0x2f0/0x2f0
[   33.974449]  ? current_time+0x1c0/0x1c0
[   33.978420]  __generic_file_write_iter+0x24b/0x610
[   33.983329]  udf_file_write_iter+0x2d4/0x4e0
[   33.987720]  __vfs_write+0x51b/0x770
[   33.991431]  ? common_file_perm+0x4e5/0x850
[   33.995733]  ? kernel_read+0x110/0x110
[   33.999607]  ? check_preemption_disabled+0x41/0x280
[   34.004605]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   34.009602]  vfs_write+0x1f3/0x540
[   34.013124]  ksys_write+0x12b/0x2a0
[   34.016729]  ? __ia32_sys_read+0xb0/0xb0
[   34.020772]  ? trace_hardirqs_off_caller+0x6e/0x210
[   34.026058]  ? do_syscall_64+0x21/0x620
[   34.030012]  do_syscall_64+0xf9/0x620
[   34.033796]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   34.038967] RIP: 0033:0x7fd50aaf5419
[   34.042662] 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 c0 ff ff ff f7 d8 64 89 01 48
[   34.061545] RSP: 002b:00007ffc0e17e5d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   34.069242] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd50aaf5419
[   34.076505] RDX: 000000000000000e RSI: 0000000020000480 RDI: 0000000000000003
[   34.083755] RBP: 00007fd50aab4cb0 R08: 0000000000000000 R09: 0000000000000000
[   34.091005] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd50aab4d40
[   34.098252] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   34.105698] Kernel Offset: disabled
[   34.109353] Rebooting in 86400 seconds..