Re: get_device_parent() race bug

From: Tejun Heo
Date: Sat Oct 03 2009 - 20:36:41 EST


Tejun Heo wrote:
> Hello, Greg, Kay, Guthrie.
>
> This problem was reported in bko#14023. (aiee.. again, sorry about
> the delay)
>
> http://bugzilla.kernel.org/show_bug.cgi?id=14023
>
> sysfs is creating several devices in cuse class concurrently and with
> CONFIG_SYSFS_DEPRECATED turned off, it triggers the following oops.
>
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000038

Ping. This one needs to be fixed in -stable. It can be triggered by
other char devices too.

Thanks.

--
tejun
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