[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.208' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.514544][ T6804] ------------[ cut here ]------------ [ 43.520140][ T6804] WARNING: CPU: 1 PID: 6804 at sound/core/info.c:609 snd_info_get_line+0x3d0/0x450 [ 43.529939][ T6804] Kernel panic - not syncing: panic_on_warn set ... [ 43.536527][ T6804] CPU: 1 PID: 6804 Comm: syz-executor373 Not tainted 5.8.0-rc5-syzkaller #0 [ 43.545169][ T6804] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.555197][ T6804] Call Trace: [ 43.558469][ T6804] dump_stack+0x1f0/0x31e [ 43.562776][ T6804] panic+0x264/0x7a0 [ 43.566646][ T6804] ? __warn+0x102/0x250 [ 43.570790][ T6804] ? snd_info_get_line+0x3d0/0x450 [ 43.575874][ T6804] ? snd_info_get_line+0x3d0/0x450 [ 43.580956][ T6804] __warn+0x227/0x250 [ 43.584910][ T6804] ? snd_info_get_line+0x3d0/0x450 [ 43.589995][ T6804] report_bug+0x1b1/0x2e0 [ 43.594303][ T6804] handle_bug+0x42/0x80 [ 43.598446][ T6804] exc_invalid_op+0x16/0x40 [ 43.602920][ T6804] asm_exc_invalid_op+0x12/0x20 [ 43.607745][ T6804] RIP: 0010:snd_info_get_line+0x3d0/0x450 [ 43.613435][ T6804] Code: 0f 85 84 00 00 00 41 c6 45 00 00 31 ed 89 e8 48 83 c4 40 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 57 8a 3b fb eb 05 e8 50 8a 3b fb <0f> 0b bd 01 00 00 00 eb da 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a3 [ 43.636377][ T6804] RSP: 0018:ffffc90001077a38 EFLAGS: 00010293 [ 43.642445][ T6804] RAX: ffffffff86390470 RBX: 0000000000000080 RCX: ffff888096156500 [ 43.650404][ T6804] RDX: 0000000000000000 RSI: ffffc90001077b10 RDI: ffff8880a1e30600 [ 43.658348][ T6804] RBP: ffffc90001077bc8 R08: dffffc0000000000 R09: ffffed10429a6594 [ 43.666294][ T6804] R10: ffffed10429a6594 R11: 0000000000000000 R12: ffff8880a2527908 [ 43.674273][ T6804] R13: ffffc90001077b10 R14: 1ffff110143c60c0 R15: ffff8880a1e30600 [ 43.682233][ T6804] ? snd_info_get_line+0x3d0/0x450 [ 43.687323][ T6804] ? snd_info_get_line+0x3d0/0x450 [ 43.692421][ T6804] snd_mixer_oss_proc_write+0x6d/0x670 [ 43.697882][ T6804] ? trace_lock_release+0x137/0x1a0 [ 43.703053][ T6804] ? snd_mixer_oss_proc_read+0x280/0x280 [ 43.708669][ T6804] snd_info_text_entry_release+0xdf/0x1c0 [ 43.714394][ T6804] ? snd_info_text_entry_write+0x450/0x450 [ 43.720175][ T6804] close_pdeo+0x16c/0x310 [ 43.724480][ T6804] ? do_raw_spin_lock+0xfe/0x800 [ 43.729392][ T6804] proc_reg_release+0x17c/0x1c0 [ 43.734214][ T6804] ? proc_reg_open+0x520/0x520 [ 43.738962][ T6804] __fput+0x2f0/0x750 [ 43.742929][ T6804] task_work_run+0x137/0x1c0 [ 43.747505][ T6804] do_exit+0x601/0x1f80 [ 43.751641][ T6804] do_group_exit+0x161/0x2d0 [ 43.756207][ T6804] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 43.762243][ T6804] __do_sys_exit_group+0x13/0x20 [ 43.767160][ T6804] __se_sys_exit_group+0x10/0x10 [ 43.772098][ T6804] __x64_sys_exit_group+0x37/0x40 [ 43.777113][ T6804] do_syscall_64+0x73/0xe0 [ 43.781503][ T6804] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 43.787386][ T6804] RIP: 0033:0x43eeb8 [ 43.791268][ T6804] Code: Bad RIP value. [ 43.795303][ T6804] RSP: 002b:00007ffce5a0e308 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 43.803686][ T6804] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043eeb8 [ 43.811633][ T6804] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 43.819582][ T6804] RBP: 00000000004be6c8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 43.827542][ T6804] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 43.835493][ T6804] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 43.844656][ T6804] Kernel Offset: disabled [ 43.849022][ T6804] Rebooting in 86400 seconds..