[ 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 '10.128.0.180' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.491354] attempt to access beyond end of device [ 47.496469] loop0: rw=2049, want=2361, limit=2048 [ 47.501447] Buffer I/O error on dev loop0, logical block 2360, lost async page write [ 47.507718] ------------[ cut here ]------------ [ 47.515535] WARNING: CPU: 0 PID: 8099 at fs/udf/truncate.c:226 udf_truncate_extents.cold+0x11/0x18 [ 47.524632] Kernel panic - not syncing: panic_on_warn set ... [ 47.524632] [ 47.531973] CPU: 0 PID: 8099 Comm: syz-executor695 Not tainted 4.19.211-syzkaller #0 [ 47.539832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 47.549158] Call Trace: [ 47.551728] dump_stack+0x1fc/0x2ef [ 47.555338] panic+0x26a/0x50e [ 47.558512] ? __warn_printk+0xf3/0xf3 [ 47.562384] ? udf_truncate_extents.cold+0x11/0x18 [ 47.567292] ? __probe_kernel_read+0x130/0x1b0 [ 47.571850] ? __warn.cold+0x5/0x5a [ 47.575457] ? __warn+0xe4/0x200 [ 47.578803] ? udf_truncate_extents.cold+0x11/0x18 [ 47.583710] __warn.cold+0x20/0x5a [ 47.587230] ? io_schedule_timeout+0x140/0x140 [ 47.591793] ? udf_truncate_extents.cold+0x11/0x18 [ 47.596701] report_bug+0x262/0x2b0 [ 47.600313] do_error_trap+0x1d7/0x310 [ 47.604179] ? math_error+0x310/0x310 [ 47.607961] ? __irq_work_queue_local+0x101/0x160 [ 47.612788] ? irq_work_queue+0x29/0x80 [ 47.616742] ? error_entry+0x72/0xd0 [ 47.620436] ? trace_hardirqs_off_caller+0x6e/0x210 [ 47.625433] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.630258] invalid_op+0x14/0x20 [ 47.633694] RIP: 0010:udf_truncate_extents.cold+0x11/0x18 [ 47.639210] 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 [ 47.658090] RSP: 0018:ffff8880b132f948 EFLAGS: 00010286 [ 47.663433] RAX: 0000000000000024 RBX: ffff88808dfa7120 RCX: 0000000000000000 [ 47.670687] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1016265f1b [ 47.677935] RBP: ffff8880b132fa30 R08: 0000000000000024 R09: 0000000000000000 [ 47.685182] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b132f9f0 [ 47.692431] R13: 0000000000000200 R14: 00000000000000ff R15: ffff8880b0ca0cc0 [ 47.699705] ? vprintk_func+0x81/0x180 [ 47.703574] ? udf_truncate_extents.cold+0x11/0x18 [ 47.708487] ? lock_downgrade+0x720/0x720 [ 47.712617] ? udf_discard_prealloc+0x690/0x690 [ 47.717264] ? udf_write_failed.isra.0+0x173/0x1d0 [ 47.722173] ? udf_write_failed.isra.0+0xd4/0x1d0 [ 47.727001] udf_write_failed.isra.0+0x17b/0x1d0 [ 47.731738] udf_write_begin+0x89/0xa0 [ 47.735621] generic_perform_write+0x1f8/0x4d0 [ 47.740187] ? filemap_page_mkwrite+0x2f0/0x2f0 [ 47.745270] ? current_time+0x1c0/0x1c0 [ 47.749229] __generic_file_write_iter+0x24b/0x610 [ 47.754159] udf_file_write_iter+0x2d4/0x4e0 [ 47.758554] __vfs_write+0x51b/0x770 [ 47.762255] ? kernel_read+0x110/0x110 [ 47.766141] ? check_preemption_disabled+0x41/0x280 [ 47.771156] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 47.776158] vfs_write+0x1f3/0x540 [ 47.779684] ksys_write+0x12b/0x2a0 [ 47.783301] ? __ia32_sys_read+0xb0/0xb0 [ 47.787351] ? trace_hardirqs_off_caller+0x6e/0x210 [ 47.792346] ? do_syscall_64+0x21/0x620 [ 47.796298] do_syscall_64+0xf9/0x620 [ 47.800080] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.805255] RIP: 0033:0x7f167ad9cf69 [ 47.808947] 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 [ 47.827922] RSP: 002b:00007f167ad482f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 47.835625] RAX: ffffffffffffffda RBX: 00007f167ae234c0 RCX: 00007f167ad9cf69 [ 47.842887] RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000003 [ 47.850148] RBP: 00007f167adf00a4 R08: 0000000000000000 R09: 0000000000000000 [ 47.857401] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f167adef0b8 [ 47.864652] R13: 0030656c69662f2e R14: 632e79726f6d656d R15: 00007f167ae234c8 [ 47.872250] Kernel Offset: disabled [ 47.875910] Rebooting in 86400 seconds..