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authorLinus Torvalds <torvalds@linux-foundation.org>2018-07-27 09:25:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-07-27 09:25:09 -0700
commitf636d300cdd6c5ff30662feb2149640eee85679a (patch)
treec3dd79c285d3ec646224d197b59d348cfedd5771
parentcd3f77d74ac31b4627cdfa70812338076a1ea475 (diff)
parentd4a34e16555708bab5b67e679a95f055d8ef9882 (diff)
Merge tag 'xfs-4.18-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong: - Fix some uninitialized variable errors - Fix an incorrect check in metadata verifiers * tag 'xfs-4.18-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: properly handle free inodes in extent hint validators xfs: Initialize variables in xfs_alloc_get_rec before using them
-rw-r--r--fs/xfs/libxfs/xfs_alloc.c5
-rw-r--r--fs/xfs/libxfs/xfs_inode_buf.c6
2 files changed, 7 insertions, 4 deletions
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index eef466260d43..75dbdc14c45f 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -223,12 +223,13 @@ xfs_alloc_get_rec(
error = xfs_btree_get_rec(cur, &rec, stat);
if (error || !(*stat))
return error;
- if (rec->alloc.ar_blockcount == 0)
- goto out_bad_rec;
*bno = be32_to_cpu(rec->alloc.ar_startblock);
*len = be32_to_cpu(rec->alloc.ar_blockcount);
+ if (*len == 0)
+ goto out_bad_rec;
+
/* check for valid extent range, including overflow */
if (!xfs_verify_agbno(mp, agno, *bno))
goto out_bad_rec;
diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
index 33dc34655ac3..30d1d60f1d46 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.c
+++ b/fs/xfs/libxfs/xfs_inode_buf.c
@@ -731,7 +731,8 @@ xfs_inode_validate_extsize(
if ((hint_flag || inherit_flag) && extsize == 0)
return __this_address;
- if (!(hint_flag || inherit_flag) && extsize != 0)
+ /* free inodes get flags set to zero but extsize remains */
+ if (mode && !(hint_flag || inherit_flag) && extsize != 0)
return __this_address;
if (extsize_bytes % blocksize_bytes)
@@ -777,7 +778,8 @@ xfs_inode_validate_cowextsize(
if (hint_flag && cowextsize == 0)
return __this_address;
- if (!hint_flag && cowextsize != 0)
+ /* free inodes get flags set to zero but cowextsize remains */
+ if (mode && !hint_flag && cowextsize != 0)
return __this_address;
if (hint_flag && rt_flag)