Re: Top kernel oopses/warnings for the week of May 16th 2008

From: Arjan van de Ven
Date: Fri May 16 2008 - 14:20:15 EST

Adrian Bunk wrote:
On Fri, May 16, 2008 at 09:41:31AM -0700, Arjan van de Ven wrote:
Bug of the week
Not in the top 10 (but barely not so), but upcoming fast is a bug that has a very
distinct pattern.
The backtraces are at

The pattern is that the kernel gets an invalid pointer passed to fput(),
coming down from a select() system call done by the "wpa_supplicant" program.
The fact that it is ONLY wpa_supplicant implicates the wireless/network stack.
Another observation is that this only happens with 64 bit kernels, even though
a large portion of the users uses 32 bit kernels. This implies that this is a 64-bit
type of bug. It appears that the top 32 bit of the pointers is getting corrupted
(the bottom part at least looks valid).

Unless I misunderstand your webinterface another pattern is a "fc9" in the version string.

that's because fc9 is the only OS that currently ships the client by default,
which means that it's a statistical thing where 90%+ of the reports come from
Fedora kernels, just because that's where the data is mined.

My first guess would be that it might be a problem in some code that is only in Fedora kernels?

that may or may not be true, but we can't conclude that right now.
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