Re: Null pointer oops when deleting item in btrfs_find_all_root()

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On 12/06/2013 02:58 PM, Liu Bo wrote:
On Fri, Dec 06, 2013 at 02:01:25PM +0100, Pedro Fonseca wrote:
Hi,

I've encountered another null pointer bug in btrfs_find_all_root().

It may be releated to a bug I previously reported to the mailing
list ("Null pointer dereference bug in btrfs_find_all_root"). But
this test ran on kernel version 3.12.2 and the oops was triggered
when deleting an item from the list. The actual workload (i.e. FS
operations) is similar though.
Not sure if the following commit[1] has been merged in this 3.12.2,
any chance to check it?

-liubo


[1]:
commit 48ec47364b6d493f0a9cdc116977bf3f34e5c3ec
Author: Liu Bo<bo.li.liu@xxxxxxxxxx>
Date:   Wed Oct 30 13:25:24 2013 +0800

     Btrfs: fix a crash when running balance and defrag concurrently


You're right, that patch didn't make it to 3.12.2.

I'll try to run the tests with the patch.

Pedro
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