On Wed, Dec 16, 2015 at 12:51 AM, Eric Eastman
<eric.east...@keepertech.com> wrote:
> I have opened ticket: 14086
>
> On Tue, Dec 15, 2015 at 5:05 AM, Yan, Zheng <uker...@gmail.com> wrote:
>> On Tue, Dec 15, 2015 at 2:08 PM, Eric Eastman
>>> [Tue Dec 15 00:46:55 2015] ------------[ cut here ]------------
>>> [Tue Dec 15 00:46:55 2015] WARNING: CPU: 0 PID: 1123421 at
>>> /home/kernel/COD/linux/fs/ceph/addr.c:125
>>
>> could you confirm that addr.c:125 is WARN_ON(!PageLocked(page));
>
> I am using the generic kernel from:
> http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc4-wily
> and assuming they did not change anything, from the 4.4rc4 source tree
> I pulled down shows:
>
> 124         ret = __set_page_dirty_nobuffers(page);
> 125         WARN_ON(!PageLocked(page));
> 126         WARN_ON(!page->mapping);
>
>
> modinfo ceph
> filename:       /lib/modules/4.4.0-040400rc4-generic/kernel/fs/ceph/ceph.ko
> license:        GPL
> description:    Ceph filesystem for Linux
> author:         Patience Warnick <patie...@newdream.net>
> author:         Yehuda Sadeh <yeh...@hq.newdream.net>
> author:         Sage Weil <s...@newdream.net>
> alias:          fs-ceph
> srcversion:     E94BA78C2D998705FE2C600
> depends:        libceph,fscache
> intree:         Y
> vermagic:       4.4.0-040400rc4-generic SMP mod_unload modversions
>
> This error has shown up about 20 times in 12 hours, since I started
> the ESXi test.
>

This warning is really strange. Could you try the attached debug patch.

Regards
Yan, Zheng

Attachment: cephfs.patch
Description: Binary data

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