From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+1eb177ecc3943b883f0a@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [media?] KASAN: slab-use-after-free Read in dvb_device_open
Date: Sun, 19 Jan 2025 09:05:07 +0800 [thread overview]
Message-ID: <20250119010509.2052-1-hdanton@sina.com> (raw)
In-Reply-To: <678c0605.050a0220.303755.0031.GAE@google.com>
On Sat, 18 Jan 2025 11:50:29 -0800
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 595523945be0 Merge tag 'devicetree-fixes-for-6.13-2' of gi..
> git tree: upstream
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12183fc4580000
#syz test
--- x/drivers/media/dvb-core/dvb_frontend.c
+++ y/drivers/media/dvb-core/dvb_frontend.c
@@ -2887,6 +2887,7 @@ err3:
mutex_unlock(&fe->dvb->mdev_lock);
err2:
#endif
+ dvb_device_get(dvbdev);
dvb_generic_release(inode, file);
err1:
if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
--
next prev parent reply other threads:[~2025-01-19 1:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-21 8:54 syzbot
2025-01-18 19:50 ` syzbot
2025-01-19 0:14 ` Hillf Danton
2025-01-19 0:32 ` syzbot
2025-01-19 1:02 ` Edward Adam Davis
2025-01-19 1:24 ` syzbot
2025-01-19 1:05 ` Hillf Danton [this message]
2025-01-19 2:40 ` syzbot
2025-01-19 1:36 ` Edward Adam Davis
2025-01-19 2:54 ` syzbot
2025-01-19 3:07 ` Edward Adam Davis
2025-01-19 3:30 ` syzbot
2025-01-19 3:42 ` [PATCH] media: dvbdev: keep dvb device ref balanced in dvb generic release and open Edward Adam Davis
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