[ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting 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 '10.128.0.203' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 34.502802] ------------[ cut here ]------------ [ 34.508512] WARNING: CPU: 0 PID: 8079 at fs/udf/truncate.c:226 udf_truncate_extents.cold+0x11/0x18 [ 34.517617] Kernel panic - not syncing: panic_on_warn set ... [ 34.517617] [ 34.525058] CPU: 0 PID: 8079 Comm: syz-executor406 Not tainted 4.19.211-syzkaller #0 [ 34.533005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.542336] Call Trace: [ 34.544909] dump_stack+0x1fc/0x2ef [ 34.548612] panic+0x26a/0x50e [ 34.551911] ? __warn_printk+0xf3/0xf3 [ 34.555806] ? udf_truncate_extents.cold+0x11/0x18 [ 34.560716] ? __probe_kernel_read+0x130/0x1b0 [ 34.565276] ? __warn.cold+0x5/0x5a [ 34.568885] ? __warn+0xe4/0x200 [ 34.572239] ? udf_truncate_extents.cold+0x11/0x18 [ 34.577153] __warn.cold+0x20/0x5a [ 34.580678] ? io_schedule_timeout+0x140/0x140 [ 34.585242] ? udf_truncate_extents.cold+0x11/0x18 [ 34.590153] report_bug+0x262/0x2b0 [ 34.593764] do_error_trap+0x1d7/0x310 [ 34.597633] ? math_error+0x310/0x310 [ 34.601414] ? __irq_work_queue_local+0x101/0x160 [ 34.606236] ? irq_work_queue+0x29/0x80 [ 34.610193] ? error_entry+0x72/0xd0 [ 34.613990] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.619011] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.623838] invalid_op+0x14/0x20 [ 34.627277] RIP: 0010:udf_truncate_extents.cold+0x11/0x18 [ 34.632794] 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 [ 34.651684] RSP: 0018:ffff888096647948 EFLAGS: 00010286 [ 34.657030] RAX: 0000000000000024 RBX: ffff88808cfca120 RCX: 0000000000000000 [ 34.664284] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012cc8f1b [ 34.671738] RBP: ffff888096647a30 R08: 0000000000000024 R09: 0000000000000000 [ 34.678994] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880966479f0 [ 34.686258] R13: 0000000000000200 R14: 00000000000000ff R15: ffff8880b0696700 [ 34.693684] ? vprintk_func+0x81/0x180 [ 34.697702] ? udf_truncate_extents.cold+0x11/0x18 [ 34.702626] ? lock_downgrade+0x720/0x720 [ 34.706758] ? udf_discard_prealloc+0x690/0x690 [ 34.711412] ? udf_write_failed.isra.0+0x173/0x1d0 [ 34.716324] ? udf_write_failed.isra.0+0xd4/0x1d0 [ 34.721150] udf_write_failed.isra.0+0x17b/0x1d0 [ 34.725991] udf_write_begin+0x89/0xa0 [ 34.729872] generic_perform_write+0x1f8/0x4d0 [ 34.734440] ? filemap_page_mkwrite+0x2f0/0x2f0 [ 34.739089] ? current_time+0x1c0/0x1c0 [ 34.743046] ? lock_downgrade+0x720/0x720 [ 34.747174] ? lock_acquire+0x170/0x3c0 [ 34.751131] __generic_file_write_iter+0x24b/0x610 [ 34.756076] udf_file_write_iter+0x2d4/0x4e0 [ 34.760561] ? iov_iter_init+0xb8/0x1d0 [ 34.764621] __vfs_write+0x51b/0x770 [ 34.768316] ? kernel_read+0x110/0x110 [ 34.772276] ? check_preemption_disabled+0x41/0x280 [ 34.777304] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.782326] vfs_write+0x1f3/0x540 [ 34.785855] ksys_write+0x12b/0x2a0 [ 34.789485] ? __ia32_sys_read+0xb0/0xb0 [ 34.793538] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.798541] ? do_syscall_64+0x21/0x620 [ 34.802499] do_syscall_64+0xf9/0x620 [ 34.806292] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.811475] RIP: 0033:0x7f48cfcc4909 [ 34.815188] 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 [ 34.834085] RSP: 002b:00007ffc1e719f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 34.841778] RAX: ffffffffffffffda RBX: 00000000200001c0 RCX: 00007f48cfcc4909 [ 34.849051] RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000003 [ 34.856301] RBP: 0000000000000000 R08: 00007ffc1e719f50 R09: 00007ffc1e719f50 [ 34.863671] R10: 00007ffc1e719e00 R11: 0000000000000246 R12: 00007ffc1e719f4c [ 34.870920] R13: 00007ffc1e719f80 R14: 00007ffc1e719f60 R15: 0000000000000001 [ 34.878390] Kernel Offset: disabled [ 34.882051] Rebooting in 86400 seconds..