From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: mchehab@kernel.org, bhumirks@gmail.com, hans.verkuil@cisco.com,
xyzzy@speakeasy.org
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [BUG] cx88: a possible sleep-in-atomic bug in snd_cx88_switch_put
Date: Wed, 13 Dec 2017 22:03:18 +0800 [thread overview]
Message-ID: <110cb3d4-656b-c5c7-53f7-c3851c56f22f@gmail.com> (raw)
The driver may sleep under a spinlock.
The function call path is:
snd_cx88_switch_put (acquire the spinlock)
v4l2_ctrl_find
mutex_lock --> may sleep
I do not find a good way to fix it, so I only report.
This possible bug is found by my static analysis tool (DSAC) and checked
by my code review.
Thanks,
Jia-Ju Bai
reply other threads:[~2017-12-13 14:03 UTC|newest]
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