[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.1.124' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 32.880294] ------------[ cut here ]------------ [ 32.892246] pm_qos_remove_request() called for unknown object [ 32.912299] WARNING: CPU: 0 PID: 8413 at kernel/power/qos.c:535 pm_qos_remove_request+0x6a/0x80 [ 32.921161] Kernel panic - not syncing: panic_on_warn set ... [ 32.921161] executing program executing program executing program executing program [ 32.928529] CPU: 0 PID: 8413 Comm: syz-executor142 Not tainted 4.19.211-syzkaller #0 [ 32.936406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.945759] Call Trace: [ 32.948355] dump_stack+0x1fc/0x2ef [ 32.951992] panic+0x26a/0x50e [ 32.955198] ? __warn_printk+0xf3/0xf3 [ 32.959093] ? pm_qos_remove_request+0x6a/0x80 [ 32.963683] ? __probe_kernel_read+0x130/0x1b0 [ 32.968271] ? __warn.cold+0x5/0x5a [ 32.971897] ? __warn+0xe4/0x200 [ 32.975259] ? pm_qos_remove_request+0x6a/0x80 [ 32.979837] __warn.cold+0x20/0x5a [ 32.983381] ? pm_qos_remove_request+0x6a/0x80 [ 32.987966] report_bug+0x262/0x2b0 [ 32.991598] do_error_trap+0x1d7/0x310 [ 32.995487] ? math_error+0x310/0x310 [ 32.999290] ? __irq_work_queue_local+0x101/0x160 [ 33.004141] ? irq_work_queue+0x29/0x80 [ 33.008121] ? error_entry+0x72/0xd0 [ 33.011834] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.016830] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.021662] invalid_op+0x14/0x20 [ 33.025100] RIP: 0010:pm_qos_remove_request+0x6a/0x80 [ 33.030267] Code: 00 85 db 74 14 e8 c6 5d 16 00 48 89 ef e8 ee fb ff ff 5b 5d e9 b7 5d 16 00 e8 b2 5d 16 00 48 c7 c7 60 7e 6a 88 e8 8b 95 a6 06 <0f> 0b 5b 5d e9 9d 5d 16 00 e8 f8 39 4c 00 eb bb 66 0f 1f 44 00 00 [ 33.049148] RSP: 0018:ffff888094e37bf0 EFLAGS: 00010282 [ 33.054507] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 33.061757] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10129c6f70 [ 33.069004] RBP: ffff88823582b700 R08: 0000000000000001 R09: 0000000000000000 [ 33.076252] R10: 0000000000000005 R11: 0000000000000000 R12: 1ffff110129c6f89 [ 33.083507] R13: 0000000000000001 R14: ffff88823582b92c R15: 0000000000000000 [ 33.090770] ? vprintk_func+0x81/0x180 [ 33.094643] snd_pcm_common_ioctl+0x12a0/0x29a0 [ 33.099294] ? mark_held_locks+0xf0/0xf0 [ 33.104222] ? __lock_acquire+0x6de/0x3ff0 [ 33.108450] ? snd_pcm_status_user+0x180/0x180 [ 33.113013] ? debug_check_no_obj_freed+0x201/0x490 [ 33.118014] ? lock_downgrade+0x720/0x720 [ 33.122148] snd_pcm_ioctl+0x7e/0xb0 [ 33.125840] ? snd_pcm_common_ioctl+0x29a0/0x29a0 [ 33.130664] do_vfs_ioctl+0xcdb/0x12e0 [ 33.134533] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 33.139613] ? debug_check_no_obj_freed+0x201/0x490 [ 33.144608] ? ioctl_preallocate+0x200/0x200 [ 33.148997] ? putname+0xe1/0x120 [ 33.152440] ? putname+0xe1/0x120 [ 33.155879] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.160876] ? kmem_cache_free+0x226/0x260 [ 33.165089] ? putname+0xe1/0x120 [ 33.168524] ? do_sys_open+0x2bf/0x520 [ 33.172390] ? filp_open+0x70/0x70 [ 33.175912] ksys_ioctl+0x9b/0xc0 [ 33.179346] __x64_sys_ioctl+0x6f/0xb0 [ 33.183220] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.187797] do_syscall_64+0xf9/0x620 [ 33.191579] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.196747] RIP: 0033:0x7fe0779117a9 [ 33.200443] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 [ 33.219334] RSP: 002b:00007ffeb0f807a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.227027] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fe0779117a9 [ 33.234281] RDX: 0000000000000000 RSI: 0000000000004112 RDI: 0000000000000004 [ 33.241530] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 33.248779] R10: 000000000000ffff R11: 0000000000000246 R12: 000000000000804e [ 33.256025] R13: 00007ffeb0f807bc R14: 00007ffeb0f807d0 R15: 00007ffeb0f807c0 [ 33.263578] Kernel Offset: disabled [ 33.267235] Rebooting in 86400 seconds..