linux-kernel - WARNING in cpu_latency_qos_remove

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Message-ID: <00000000000073e9c305a341a39a@google.com>
Date:   Tue, 14 Apr 2020 08:13:14 -0700
From:   syzbot <syzbot+6e2d4fbfbf03293bb776@...kaller.appspotmail.com>
To:     len.brown@...el.com, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, pavel@....cz, rjw@...ysocki.net,
        syzkaller-bugs@...glegroups.com
Subject: WARNING in cpu_latency_qos_remove_request

Hello,

syzbot found the following crash on:

HEAD commit:    c0cc2711 Merge tag 'modules-for-v5.7' of git://git.kernel...
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10834007e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=23c5a352e32a1944
dashboard link: https://syzkaller.appspot.com/bug?extid=6e2d4fbfbf03293bb776
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
userspace arch: i386
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14fbbffbe00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+6e2d4fbfbf03293bb776@...kaller.appspotmail.com

------------[ cut here ]------------
cpu_latency_qos_remove_request called for unknown object
WARNING: CPU: 1 PID: 9086 at kernel/power/qos.c:322 cpu_latency_qos_remove_request+0x59/0x380 kernel/power/qos.c:322
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 9086 Comm: syz-executor.2 Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:cpu_latency_qos_remove_request+0x59/0x380 kernel/power/qos.c:322
Code: 02 00 0f 85 f4 02 00 00 48 81 7d 28 80 97 9a 89 74 25 e8 3a 85 18 00 48 c7 c6 20 fc 2b 88 48 c7 c7 20 f8 2b 88 e8 4f b9 e9 ff <0f> 0b 5b 5d 41 5c 41 5d e9 1a 85 18 00 e8 15 85 18 00 0f 1f 44 00
RSP: 0018:ffffc90002717bb0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815cd551 RDI: fffff520004e2f68
RBP: ffff8880a3644840 R08: ffff8880a2b04300 R09: ffffed1015ce66a9
R10: ffff8880ae733547 R11: ffffed1015ce66a8 R12: ffff8880a3644800
R13: ffff8880a36449e4 R14: 1ffff920004e2f85 R15: 0000000000000000
 snd_pcm_hw_free sound/core/pcm_native.c:827 [inline]
 snd_pcm_common_ioctl+0xb32/0x2260 sound/core/pcm_native.c:3192
 snd_pcm_ioctl_compat+0x70b/0x10d0 sound/core/pcm_compat.c:532
 __do_compat_sys_ioctl fs/ioctl.c:857 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:808 [inline]
 __ia32_compat_sys_ioctl+0x23d/0x2b0 fs/ioctl.c:808
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x270/0xe90 arch/x86/entry/common.c:396
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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