From: Dmitry Vyukov <dvyukov@google.com>
To: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Jie Yang <yang.jie@intel.com>, Mark Brown <broonie@kernel.org>,
alsa-devel@alsa-project.org, LKML <linux-kernel@vger.kernel.org>
Cc: Alexander Potapenko <glider@google.com>,
Kostya Serebryany <kcc@google.com>,
Sasha Levin <sasha.levin@oracle.com>,
syzkaller <syzkaller@googlegroups.com>
Subject: sound: WARNING in snd_seq_oss_synth_cleanup
Date: Sun, 24 Jan 2016 11:26:47 +0100 [thread overview]
Message-ID: <CACT4Y+bFktAgSCRFom+Y31u6ZScx2seKPZ0JkuErEeJ9sWWmtw@mail.gmail.com> (raw)
Hello,
The following program triggers WARNING in snd_seq_oss_synth_cleanup:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7573 at sound/core/seq/oss/seq_oss_synth.c:311
snd_seq_oss_synth_cleanup+0x35f/0x420()
Modules linked in:
CPU: 1 PID: 7573 Comm: a.out Tainted: G W 4.4.0+ #276
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
00000000ffffffff ffff880036bcfbb0 ffffffff82999e2d 0000000000000000
ffff8800339797c0 ffffffff86d46580 ffff880036bcfbf0 ffffffff81352089
ffffffff84fd380f ffffffff86d46580 0000000000000137 ffff880033e592e8
Call Trace:
[< inline >] __dump_stack lib/dump_stack.c:15
[<ffffffff82999e2d>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50
[<ffffffff81352089>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:482
[<ffffffff813522b9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:515
[<ffffffff84fd380f>] snd_seq_oss_synth_cleanup+0x35f/0x420
sound/core/seq/oss/seq_oss_synth.c:311
[<ffffffff84fca919>] snd_seq_oss_release+0x79/0x130
sound/core/seq/oss/seq_oss_init.c:427
[<ffffffff84fc8faa>] odev_release+0x5a/0x80 sound/core/seq/oss/seq_oss.c:155
[<ffffffff817b73c6>] __fput+0x236/0x780 fs/file_table.c:208
[<ffffffff817b7995>] ____fput+0x15/0x20 fs/file_table.c:244
[<ffffffff813afdc0>] task_work_run+0x170/0x210 kernel/task_work.c:115
[< inline >] exit_task_work include/linux/task_work.h:21
[<ffffffff8135b275>] do_exit+0x8b5/0x2c60 kernel/exit.c:750
[<ffffffff8135d798>] do_group_exit+0x108/0x330 kernel/exit.c:880
[< inline >] SYSC_exit_group kernel/exit.c:891
[<ffffffff8135d9dd>] SyS_exit_group+0x1d/0x20 kernel/exit.c:889
[<ffffffff86336c36>] entry_SYSCALL_64_fastpath+0x16/0x7a
arch/x86/entry/entry_64.S:185
---[ end trace e71270304b7f911a ]---
// autogenerated by syzkaller (http://github.com/google/syzkaller)
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main()
{
open("/dev/char/14:8", O_RDWR);
}
On commit 30f05309bde49295e02e45c7e615f73aa4e0ccc2.
next reply other threads:[~2016-01-24 10:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-24 10:26 Dmitry Vyukov [this message]
2016-01-25 10:48 ` sound: WARNING in snd_seq_oss_synth_cleanup Takashi Iwai
2016-01-25 10:48 ` Takashi Iwai
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