Messages in this thread | | | Date | Wed, 29 May 2013 15:03:42 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] cciss: fix broken mutex usage in ioctl |
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On Fri, 24 May 2013 14:28:41 -0500 "Stephen M. Cameron" <scameron@beardog.cce.hp.com> wrote:
> If a new logical drive is added and the CCISS_REGNEWD ioctl is invoked > (as is normal with the Array Configuration Utility) the process > will hang as below. It attempts to acquire the same mutex twice, once > in do_ioctl() and once in cciss_unlocked_open(). The BKL was recursive, > the mutex isn't.
huh, now that's a really old-school deadlock. I wonder why lockdep didn't shout about it.
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