This is a note to let you know that I've just added the patch titled
xfs: fix agno increment in xfs_inumbers() loop
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xfs-fix-agno-increment-in-xfs_inumbers-loop.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a8b1ee8bafc765ebf029d03c5479a69aebff9693 Mon Sep 17 00:00:00 2001
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 13 Oct 2014 10:21:53 +1100
Subject: xfs: fix agno increment in xfs_inumbers() loop
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
commit a8b1ee8bafc765ebf029d03c5479a69aebff9693 upstream.
caused a regression in xfs_inumbers, which in turn broke
xfsdump, causing incomplete dumps.
The loop in xfs_inumbers() needs to fill the user-supplied
buffers, and iterates via xfs_btree_increment, reading new
ags as needed.
But the first time through the loop, if xfs_btree_increment()
succeeds, we continue, which triggers the ++agno at the bottom
of the loop, and we skip to soon to the next ag - without
the proper setup under next_ag to read the next ag.
Fix this by removing the agno increment from the loop conditional,
and only increment agno if we have actually hit the code under
the next_ag: target.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Dave Chinner <david@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/xfs/xfs_itable.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -639,7 +639,8 @@ next_ag:
xfs_buf_relse(agbp);
agbp = NULL;
agino = 0;
- } while (++agno < mp->m_sb.sb_agcount);
+ agno++;
+ } while (agno < mp->m_sb.sb_agcount);
if (!error) {
if (bufidx) {
Patches currently in stable-queue which might be from sandeen@xxxxxxxxxxx are
queue-3.17/xfs-fix-agno-increment-in-xfs_inumbers-loop.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html