From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org
Cc: linux-xfs@vger.kernel.org
Subject: [PATCH 1/7] xfs: fix uninitialized variables in xrep_calc_ag_resblks
Date: Tue, 02 Mar 2021 14:28:42 -0800 [thread overview]
Message-ID: <161472412192.3421582.514508996639938538.stgit@magnolia> (raw)
In-Reply-To: <161472411627.3421582.2040330025988154363.stgit@magnolia>
From: Darrick J. Wong <djwong@kernel.org>
If we can't read the AGF header, we never actually set a value for
freelen and usedlen. These two variables are used to make the worst
case estimate of btree size, so it's safe to set them to the AG size as
a fallback.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
fs/xfs/scrub/repair.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index 25e86c71e7b9..61bc43418a2a 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -207,7 +207,11 @@ xrep_calc_ag_resblks(
/* Now grab the block counters from the AGF. */
error = xfs_alloc_read_agf(mp, NULL, sm->sm_agno, 0, &bp);
- if (!error) {
+ if (error) {
+ aglen = xfs_ag_block_count(mp, sm->sm_agno);
+ freelen = aglen;
+ usedlen = aglen;
+ } else {
struct xfs_agf *agf = bp->b_addr;
aglen = be32_to_cpu(agf->agf_length);
next prev parent reply other threads:[~2021-03-03 3:19 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-02 22:28 [PATCHSET 0/7] xfs: small fixes and cleanups Darrick J. Wong
2021-03-02 22:28 ` Darrick J. Wong [this message]
2021-03-05 8:23 ` [PATCH 1/7] xfs: fix uninitialized variables in xrep_calc_ag_resblks Christoph Hellwig
2021-03-05 17:49 ` Darrick J. Wong
2021-03-06 7:15 ` Christoph Hellwig
2021-03-02 22:28 ` [PATCH 2/7] xfs: fix dquot scrub loop cancellation Darrick J. Wong
2021-03-05 8:24 ` Christoph Hellwig
2021-03-02 22:28 ` [PATCH 3/7] xfs: bail out of scrub immediately if scan incomplete Darrick J. Wong
2021-03-05 8:25 ` Christoph Hellwig
2021-03-02 22:28 ` [PATCH 4/7] xfs: mark a data structure sick if there are cross-referencing errors Darrick J. Wong
2021-03-05 8:26 ` Christoph Hellwig
2021-03-02 22:29 ` [PATCH 5/7] xfs: set the scrub AG number in xchk_ag_read_headers Darrick J. Wong
2021-03-05 8:27 ` Christoph Hellwig
2021-03-02 22:29 ` [PATCH 6/7] xfs: remove return value from xchk_ag_btcur_init Darrick J. Wong
2021-03-05 8:28 ` Christoph Hellwig
2021-03-02 22:29 ` [PATCH 7/7] xfs: validate ag btree levels using the precomputed values Darrick J. Wong
2021-03-05 8:29 ` Christoph Hellwig
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