Messages in this thread | | | Date | Thu, 4 Dec 2014 16:54:01 -0800 | From | Jeremiah Mahler <> | Subject | Re: linux-next: Tree for Dec 4 |
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all,
On Thu, Dec 04, 2014 at 03:34:11PM -0800, Jeremiah Mahler wrote: > all, > > On Thu, Dec 04, 2014 at 07:59:28PM +1100, Stephen Rothwell wrote: > > Hi all, > > > > Changes since 20141203: > > [...] > > > > -- > > Cheers, > > Stephen Rothwell sfr@canb.auug.org.au > > > [...] > > linux-next 20141204 is broken on all my machines, 20141203 worked fine. > > They fail very early in the boot process and are unable to mount root. > There are lots of "ext4_check_descriptors: Checksum for group ... > failed" messages. > > Any suggestions for where to start looking? > > -- > - Jeremiah Mahler
I ran a bisect and found this patch to be faulty.
commit fdfe073987619ec375da8d8a2701ab271d1b1339 Author: Dmitry Monakhov <dmonakhov@openvz.org> Date: Tue Dec 2 16:09:16 2014 -0500
ext4: fix potential use after free during resize
We need some sort of synchronization while updating ->s_group_desc because there are a lot of users which can access old ->s_group_desc array after it was released.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-- - Jeremiah Mahler
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