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From: Greg KH <greg@kroah.com>
To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: pci_walk_bus race condition
Date: Fri, 26 May 2006 06:50:39 -0700	[thread overview]
Message-ID: <20060526135039.GA13280@kroah.com> (raw)
In-Reply-To: <1148625315.4377.518.camel@ymzhang-perf.sh.intel.com>

On Fri, May 26, 2006 at 02:35:16PM +0800, Zhang, Yanmin wrote:
> pci_walk_bus has a race with pci_destroy_dev. In the while loop,
> when the callback function is called, dev pointed by next might be
> freed and erased. So later on access to dev might cause kernel panic.

Have you seen this happen?  The only user of this function is the PPC64
EEH handler, which last time I checked, didn't run on Intel based
processors :)

thanks,

greg k-h

  reply	other threads:[~2006-05-26 13:57 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-26  6:35 Zhang, Yanmin
2006-05-26 13:50 ` Greg KH [this message]
2006-05-29  0:41   ` Zhang, Yanmin
2006-05-29  8:05     ` Zhang, Yanmin
2006-06-02  4:35       ` Zhang, Yanmin
2006-06-02  5:11         ` Andrew Morton
2006-06-02  5:24           ` Andrew Morton
2006-06-02 10:51             ` Zhang, Yanmin

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