Re: [bisected commit 0fc9d10] NFS-server corruption with 3.4

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On 06/05/2012 06:39 PM, Konstantin Khlebnikov wrote:
OGAWA Hirofumi wrote:
Konstantin Khlebnikov<khlebnikov@xxxxxxxxxx> writes:

Proper fix in attachment.

Maybe, you are going to add the stable tag for next stable?

Thanks.

Yes, this definitely must be in next stable 3.4.x , but first I'll wait
for confirmation.

Guys, who can reproduce this, please check patch "radix-tree: fix
contiguous iterator"
from my previous mail in this thread.


radix-tree: fix contiguous iterator

From: Konstantin Khlebnikov<khlebnikov@xxxxxxxxxx>

This patch fixes bug in macro radix_tree_for_each_contig().
If radix_tree_next_slot() sees NULL in next slot it returns NULL, but
following
radix_tree_next_chunk() switches iterating into next chunk. As result
iterating
becomes non-contiguous and breaks vfs "splice" and all its users.



I patched on to off v3.4 and Firefox an Thunderbird do not segfault anymore. The do not start either. This was de feature on my 'production' server I could not reproduce on my test server. Maybe it has something to with the different type of nic's.

For the second attempt I branched of at 0fc9d1040313047edf6a39fd and applied your patch on top of it. Firefox an Thunderbird where back again. So your patch works.

Now I need some git-instructions. Apparently something else is broken. I branched of with:

git branch debug 0fc9d1040313047edf6a3
git checkout debug
applied the patch.
git commit -a (got commit 5c09c685ba2d36c3b905220d43ad1b47354e456eed back)

Now I want all commits in my master branch up until ref v3.4 added to my debug branch so I can bisect between 5c09 and v3.4

--
Hans









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