Re: [x86] BUG: unable to handle kernel paging request at 00740060

From: Oleg Nesterov
Date: Tue Oct 08 2013 - 12:54:14 EST


On 10/08, Fengguang Wu wrote:
>
> Yeah, this will quiet the oops messages:
>
> -#ifdef CC_HAVE_ASM_GOTO
> +#if 0

Can't understand how this can affect task_work.c...

Well, task_work_add() does test_and_set_bit(), so that patch actually
changes this code, but still I can't see how this can lead to these
OOPSes.

Fengguang, I do not think this will help, but just in case. Could you
show the result of

$ kernel/task_work.s

?

Oleg.

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