From: Alexander Strakh <strakh@ispras.ru>
To: Benjamin Kong <benjamin_kong@ali.com.tw>,
Samuel Ortiz <samuel@sortiz.org>,
rda-users@lists.sourceforge.net,
Linux Kernlel Mailing List <linux-kernel@vger.kernel.org>
Subject: [BUG] ali-ircc.c sleeping function called from invalid context
Date: Thu, 8 Oct 2009 12:22:29 +0000 [thread overview]
Message-ID: <200910081222.29956.strakh@ispras.ru> (raw)
KERNEL_VERSION: 2.6.31
DESCRIBE:
Driver reports/drivers/net/irda/ali-ircc.c might sleep in attomic context,
because it calls ali_ircc_change_speed after spin_lock_irqsave:
drivers/net/irda/ali-ircc.c:
2028static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq,
int cmd)
...
2056 spin_lock_irqsave(&self->lock, flags);
2057 ali_ircc_change_speed(self, irq->ifr_baudrate);
...
Path to might_sleep macro from ali_ircc_change_speed:
1. ali_ircc_change_speed calls ali_ircc_sir_change_speed
./drivers/net/irda/ali-ircc.c:999
2. ali_ircc_sir_change_speed calls spin_lock_irqsave at
./drivers/net/irda/ali-ircc.c:1084
Found by: Linux Driver Verification
next reply other threads:[~2009-10-08 8:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-08 12:22 Alexander Strakh [this message]
2009-10-08 14:45 Alexander Strakh
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