[ 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 '10.128.1.111' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 33.778282] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) executing program [ 33.828389] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) [ 33.843160] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) [ 33.856536] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) [ 33.875598] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) [ 33.886563] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) [ 33.929388] ------------[ cut here ]------------ [ 33.953382] WARNING: CPU: 1 PID: 8106 at fs/udf/truncate.c:226 udf_truncate_extents.cold+0x11/0x18 [ 33.962506] Kernel panic - not syncing: panic_on_warn set ... [ 33.962506] [ 33.969878] CPU: 1 PID: 8106 Comm: syz-executor219 Not tainted 4.19.211-syzkaller #0 [ 33.977763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.987128] Call Trace: [ 33.989729] dump_stack+0x1fc/0x2ef [ 33.993375] panic+0x26a/0x50e [ 33.996575] ? __warn_printk+0xf3/0xf3 [ 34.000474] ? udf_truncate_extents.cold+0x11/0x18 [ 34.005414] ? __probe_kernel_read+0x130/0x1b0 [ 34.009997] ? __warn.cold+0x5/0x5a [ 34.013625] ? __warn+0xe4/0x200 [ 34.016996] ? udf_truncate_extents.cold+0x11/0x18 [ 34.021933] __warn.cold+0x20/0x5a [ 34.025475] ? io_schedule_timeout+0x140/0x140 [ 34.030062] ? udf_truncate_extents.cold+0x11/0x18 [ 34.035002] report_bug+0x262/0x2b0 [ 34.038632] do_error_trap+0x1d7/0x310 [ 34.042519] ? math_error+0x310/0x310 [ 34.046322] ? __irq_work_queue_local+0x101/0x160 [ 34.051167] ? irq_work_queue+0x29/0x80 [ 34.055150] ? error_entry+0x72/0xd0 [ 34.058866] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.063886] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.068736] invalid_op+0x14/0x20 [ 34.072193] RIP: 0010:udf_truncate_extents.cold+0x11/0x18 [ 34.077728] 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 [ 34.096631] RSP: 0018:ffff88809557f948 EFLAGS: 00010286 [ 34.101995] RAX: 0000000000000024 RBX: ffff88808dbbb120 RCX: 0000000000000000 [ 34.109307] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012aaff1b [ 34.116580] RBP: ffff88809557fa30 R08: 0000000000000024 R09: 0000000000000000 [ 34.123855] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809557f9f0 [ 34.131127] R13: 0000000000000200 R14: 00000000000000ff R15: ffff88809530ce40 [ 34.138414] ? vprintk_func+0x81/0x180 [ 34.142306] ? udf_truncate_extents.cold+0x11/0x18 [ 34.147242] ? lock_downgrade+0x720/0x720 executing program executing program [ 34.151390] ? udf_discard_prealloc+0x690/0x690 [ 34.156070] ? udf_write_failed.isra.0+0x173/0x1d0 [ 34.161004] ? udf_write_failed.isra.0+0xd4/0x1d0 [ 34.165861] udf_write_failed.isra.0+0x17b/0x1d0 [ 34.170623] udf_write_begin+0x89/0xa0 [ 34.174512] generic_perform_write+0x1f8/0x4d0 [ 34.179110] ? __mnt_drop_write_file+0x6f/0xa0 [ 34.183708] ? filemap_page_mkwrite+0x2f0/0x2f0 [ 34.188378] ? current_time+0x1c0/0x1c0 [ 34.192360] __generic_file_write_iter+0x24b/0x610 [ 34.197300] udf_file_write_iter+0x2d4/0x4e0 [ 34.201727] __vfs_write+0x51b/0x770 [ 34.205449] ? kernel_read+0x110/0x110 [ 34.209349] ? check_preemption_disabled+0x41/0x280 [ 34.214386] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.219414] vfs_write+0x1f3/0x540 [ 34.222960] ksys_write+0x12b/0x2a0 [ 34.226588] ? __ia32_sys_read+0xb0/0xb0 [ 34.230652] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.235669] ? do_syscall_64+0x21/0x620 [ 34.239649] do_syscall_64+0xf9/0x620 [ 34.243494] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.248683] RIP: 0033:0x7f2fe3064c39 [ 34.252396] 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 [ 34.271297] RSP: 002b:00007f2fe30102f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 34.279016] RAX: ffffffffffffffda RBX: 00007f2fe30ea4c0 RCX: 00007f2fe3064c39 [ 34.286291] RDX: 000000000208e24b RSI: 0000000020000080 RDI: 0000000000000003 [ 34.293580] RBP: 00007f2fe30b70b4 R08: 0000000000000000 R09: 0000000000000000 [ 34.300855] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2fe30b60c8 [ 34.308123] R13: 0030656c69662f2e R14: 632e79726f6d656d R15: 00007f2fe30ea4c8 [ 34.315739] Kernel Offset: disabled [ 34.319400] Rebooting in 86400 seconds..