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| author | Theodore Ts'o <tytso@mit.edu> | 2014-09-03 09:33:00 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-09-03 09:37:30 -0400 |
| commit | a9cfcd63e8d206ce4235c355d857c4fbdf0f4587 (patch) | |
| tree | f373a6fdd3347086b50c93ed16d164cb039f8dc1 | |
| parent | d4f03186c8986ffde34d06fe74a99aab08f7ee0b (diff) | |
| download | test-a9cfcd63e8d206ce4235c355d857c4fbdf0f4587.tar.gz | |
ext4: avoid trying to kfree an ERR_PTR pointer
Thanks to Dan Carpenter for extending smatch to find bugs like this.
(This was found using a development version of smatch.)
Fixes: 36de928641ee48b2078d3fe9514242aaa2f92013
Reported-by: Dan Carpenter <dan.carpenter@oracle.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
| -rw-r--r-- | fs/ext4/namei.c | 2 | ||||
| -rw-r--r-- | fs/ext4/resize.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 90a3cdca3f88b..603e4ebbd0ac1 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3240,6 +3240,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, &new.de, &new.inlined); if (IS_ERR(new.bh)) { retval = PTR_ERR(new.bh); + new.bh = NULL; goto end_rename; } if (new.bh) { @@ -3386,6 +3387,7 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, &new.de, &new.inlined); if (IS_ERR(new.bh)) { retval = PTR_ERR(new.bh); + new.bh = NULL; goto end_rename; } diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index bb0e80f03e2eb..1e43b905ff985 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -575,6 +575,7 @@ handle_bb: bh = bclean(handle, sb, block); if (IS_ERR(bh)) { err = PTR_ERR(bh); + bh = NULL; goto out; } overhead = ext4_group_overhead_blocks(sb, group); @@ -603,6 +604,7 @@ handle_ib: bh = bclean(handle, sb, block); if (IS_ERR(bh)) { err = PTR_ERR(bh); + bh = NULL; goto out; } |