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Date: Tue, 12 Dec 2017 16:53:32 +0800
From: Jia-Ju Bai <baijiaju1990@...il.com>
To: davem@...emloft.net, keescook@...omium.org, dhowells@...hat.com,
timofeev@...nch.ru
Cc: netdev@...r.kernel.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [BUG] sbni: a possible sleep-in-atomic bug in sbni_close
According to drivers/net/wan/sbni.c, the driver may sleep under a spinlock.
The function call path is:
sbni_close (acquire the spinlock)
free_irq --> 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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