From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+7061d72c26b7daebe2b4@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [sound?] KASAN: use-after-free Read in release_card_device
Date: Fri, 14 Aug 2026 12:10:23 +0800 [thread overview]
Message-ID: <20260814041025.1107-1-hdanton@sina.com> (raw)
In-Reply-To: <6a7d81d9.d5f0ebe7.22d851.0014.GAE@google.com>
> Date: Thu, 13 Aug 2026 01:35:37 -0700 [thread overview]
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 3d6d817622b0 Merge tag 'scsi-fixes' of git://git.kernel.or..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1729f479580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=aaf0da806f995318
> dashboard link: https://syzkaller.appspot.com/bug?extid=7061d72c26b7daebe2b4
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=120e8ac6580000
#syz test
--- x/sound/core/init.c
+++ y/sound/core/init.c
@@ -599,8 +599,10 @@ static int snd_card_do_free(struct snd_c
dev_warn(card->dev, "unable to free card info\n");
/* Not fatal error */
}
- if (card->release_completion)
+ if (card->release_completion) {
complete(card->release_completion);
+ return 0;
+ }
if (!card->managed)
kfree(card);
return 0;
--
next prev parent reply other threads:[~2026-08-14 4:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-05 0:12 syzbot
2026-08-13 8:35 ` syzbot
2026-08-14 4:10 ` Hillf Danton [this message]
2026-08-14 7:37 ` syzbot
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