* [BUG] cx88: a possible sleep-in-atomic bug in snd_cx88_switch_put
@ 2017-12-13 14:03 Jia-Ju Bai
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From: Jia-Ju Bai @ 2017-12-13 14:03 UTC (permalink / raw)
To: mchehab, bhumirks, hans.verkuil, xyzzy; +Cc: linux-media, linux-kernel
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
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2017-12-13 14:03 [BUG] cx88: a possible sleep-in-atomic bug in snd_cx88_switch_put Jia-Ju Bai
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