* SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
@ 2012-05-16 0:46 Jeff Layton
[not found] ` <20120515204642.1a5bedee-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Jeff Layton @ 2012-05-16 0:46 UTC (permalink / raw)
To: linux-cifs-u79uwXL29TY76Z2rM5mHXA
I saw this today when unplugging cifs.ko in a stock -rc7 kernel. I
never mounted any cifs mounts, so this is entirely due to module
initialization as far as I can tell:
[ 464.776843] SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
[ 464.779071] Pid: 4738, comm: rmmod Not tainted 3.4.0-0.rc7.git0.1.fc18.x86_64 #1
[ 464.780243] Call Trace:
[ 464.780433] [<ffffffff8116b53a>] kmem_cache_destroy+0x2ba/0x360
[ 464.780870] [<ffffffffa00d6469>] cifs_destroy_request_bufs+0x21/0x3b [cifs]
[ 464.781397] [<ffffffffa00d66a6>] exit_cifs+0x30/0x98a [cifs]
[ 464.781944] [<ffffffff810b4a3e>] sys_delete_module+0x16e/0x2d0
[ 464.782482] [<ffffffff8117c186>] ? filp_close+0x66/0xa0
[ 464.782903] [<ffffffff81603769>] system_call_fastpath+0x16/0x1b
...any ideas?
--
Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
[not found] ` <20120515204642.1a5bedee-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org>
@ 2012-05-16 4:00 ` Steve French
[not found] ` <CAH2r5muoDPbWv5jpK7hkyVAV_EOGoAVUccz86nZsxPy6WyahpQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Steve French @ 2012-05-16 4:00 UTC (permalink / raw)
To: Jeff Layton; +Cc: linux-cifs-u79uwXL29TY76Z2rM5mHXA
I don't see that on my rc7 system and I have slub debugging and
various other debugging options on in my rc7 config. Let me know if
you find a way to reproduce it or want me to try with your config.
On Tue, May 15, 2012 at 7:46 PM, Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> I saw this today when unplugging cifs.ko in a stock -rc7 kernel. I
> never mounted any cifs mounts, so this is entirely due to module
> initialization as far as I can tell:
>
> [ 464.776843] SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
> [ 464.779071] Pid: 4738, comm: rmmod Not tainted 3.4.0-0.rc7.git0.1.fc18.x86_64 #1
> [ 464.780243] Call Trace:
> [ 464.780433] [<ffffffff8116b53a>] kmem_cache_destroy+0x2ba/0x360
> [ 464.780870] [<ffffffffa00d6469>] cifs_destroy_request_bufs+0x21/0x3b [cifs]
> [ 464.781397] [<ffffffffa00d66a6>] exit_cifs+0x30/0x98a [cifs]
> [ 464.781944] [<ffffffff810b4a3e>] sys_delete_module+0x16e/0x2d0
> [ 464.782482] [<ffffffff8117c186>] ? filp_close+0x66/0xa0
> [ 464.782903] [<ffffffff81603769>] system_call_fastpath+0x16/0x1b
>
> ...any ideas?
> --
> Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Thanks,
Steve
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
[not found] ` <CAH2r5muoDPbWv5jpK7hkyVAV_EOGoAVUccz86nZsxPy6WyahpQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2012-05-16 6:11 ` Suresh Jayaraman
[not found] ` <4FB3451B.5020704-IBi9RG/b67k@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Suresh Jayaraman @ 2012-05-16 6:11 UTC (permalink / raw)
To: Steve French; +Cc: Jeff Layton, linux-cifs-u79uwXL29TY76Z2rM5mHXA
On 05/16/2012 09:30 AM, Steve French wrote:
> I don't see that on my rc7 system and I have slub debugging and
> various other debugging options on in my rc7 config. Let me know if
> you find a way to reproduce it or want me to try with your config.
>
> On Tue, May 15, 2012 at 7:46 PM, Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
>> I saw this today when unplugging cifs.ko in a stock -rc7 kernel. I
>> never mounted any cifs mounts, so this is entirely due to module
>> initialization as far as I can tell:
>>
>> [ 464.776843] SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
>> [ 464.779071] Pid: 4738, comm: rmmod Not tainted 3.4.0-0.rc7.git0.1.fc18.x86_64 #1
>> [ 464.780243] Call Trace:
>> [ 464.780433] [<ffffffff8116b53a>] kmem_cache_destroy+0x2ba/0x360
>> [ 464.780870] [<ffffffffa00d6469>] cifs_destroy_request_bufs+0x21/0x3b [cifs]
>> [ 464.781397] [<ffffffffa00d66a6>] exit_cifs+0x30/0x98a [cifs]
>> [ 464.781944] [<ffffffff810b4a3e>] sys_delete_module+0x16e/0x2d0
>> [ 464.782482] [<ffffffff8117c186>] ? filp_close+0x66/0xa0
>> [ 464.782903] [<ffffffff81603769>] system_call_fastpath+0x16/0x1b
>>
>> ...any ideas?
Sounds to me like a slub problem affecting random modules that could be
fixed by this patch
http://comments.gmane.org/gmane.linux.kernel.mm/78106
If you are able to reliably reproduce, it is worth giving the patch a
shot. But, I could be totally wrong too...
Suresh
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
[not found] ` <4FB3451B.5020704-IBi9RG/b67k@public.gmane.org>
@ 2012-05-16 11:02 ` Jeff Layton
0 siblings, 0 replies; 4+ messages in thread
From: Jeff Layton @ 2012-05-16 11:02 UTC (permalink / raw)
To: Suresh Jayaraman; +Cc: Steve French, linux-cifs-u79uwXL29TY76Z2rM5mHXA
On Wed, 16 May 2012 11:41:39 +0530
Suresh Jayaraman <sjayaraman-IBi9RG/b67k@public.gmane.org> wrote:
> On 05/16/2012 09:30 AM, Steve French wrote:
> > I don't see that on my rc7 system and I have slub debugging and
> > various other debugging options on in my rc7 config. Let me know if
> > you find a way to reproduce it or want me to try with your config.
> >
> > On Tue, May 15, 2012 at 7:46 PM, Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> >> I saw this today when unplugging cifs.ko in a stock -rc7 kernel. I
> >> never mounted any cifs mounts, so this is entirely due to module
> >> initialization as far as I can tell:
> >>
> >> [ 464.776843] SLUB cifs_request: kmem_cache_destroy called for cache that still has objects.
> >> [ 464.779071] Pid: 4738, comm: rmmod Not tainted 3.4.0-0.rc7.git0.1.fc18.x86_64 #1
> >> [ 464.780243] Call Trace:
> >> [ 464.780433] [<ffffffff8116b53a>] kmem_cache_destroy+0x2ba/0x360
> >> [ 464.780870] [<ffffffffa00d6469>] cifs_destroy_request_bufs+0x21/0x3b [cifs]
> >> [ 464.781397] [<ffffffffa00d66a6>] exit_cifs+0x30/0x98a [cifs]
> >> [ 464.781944] [<ffffffff810b4a3e>] sys_delete_module+0x16e/0x2d0
> >> [ 464.782482] [<ffffffff8117c186>] ? filp_close+0x66/0xa0
> >> [ 464.782903] [<ffffffff81603769>] system_call_fastpath+0x16/0x1b
> >>
> >> ...any ideas?
>
> Sounds to me like a slub problem affecting random modules that could be
> fixed by this patch
>
> http://comments.gmane.org/gmane.linux.kernel.mm/78106
>
> If you are able to reliably reproduce, it is worth giving the patch a
> shot. But, I could be totally wrong too...
>
Thanks for the pointer. That seems to have fixed it. I'll see if I can
reply to the thread and give them a "Tested-by" as well...
Thanks!
--
Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-05-16 11:02 UTC | newest]
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2012-05-16 0:46 SLUB cifs_request: kmem_cache_destroy called for cache that still has objects Jeff Layton
[not found] ` <20120515204642.1a5bedee-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org>
2012-05-16 4:00 ` Steve French
[not found] ` <CAH2r5muoDPbWv5jpK7hkyVAV_EOGoAVUccz86nZsxPy6WyahpQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-05-16 6:11 ` Suresh Jayaraman
[not found] ` <4FB3451B.5020704-IBi9RG/b67k@public.gmane.org>
2012-05-16 11:02 ` Jeff Layton
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