lkml.org 
[lkml]   [2012]   [Apr]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: linux-next ppc64: RCU mods cause __might_sleep BUGs
From
Date
On Mon, 2012-04-30 at 15:37 -0700, Hugh Dickins wrote:
>
> BUG: sleeping function called from invalid context at include/linux/pagemap.h:354
> in_atomic(): 0, irqs_disabled(): 0, pid: 6886, name: cc1

Hrm ... in_atomic and irqs_disabled are both 0 ... so yeah it smells
like a preempt count problem... odd.

Did you get a specific bisect target yet ?

Cheers,
Ben.

> Call Trace:
> [c0000001a99f78e0] [c00000000000f34c] .show_stack+0x6c/0x16c (unreliable)
> [c0000001a99f7990] [c000000000077b40] .__might_sleep+0x11c/0x134
> [c0000001a99f7a10] [c0000000000c6228] .filemap_fault+0x1fc/0x494
> [c0000001a99f7af0] [c0000000000e7c9c] .__do_fault+0x120/0x684
> [c0000001a99f7c00] [c000000000025790] .do_page_fault+0x458/0x664
> [c0000001a99f7e30] [c000000000005868] handle_page_fault+0x10/0x30
>
> I've plenty more examples, most of them from page faults or from kswapd;
> but I don't think there's any more useful information in them.
>
> Anything I can try later on?



\
 
 \ /
  Last update: 2012-05-01 02:41    [W:0.036 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site