diff options
| author | Yoshinori Sano <yoshinori.sano@gmail.com> | 2011-02-15 12:01:42 +0000 |
|---|---|---|
| committer | root <Chris Mason chris.mason@oracle.com> | 2011-03-28 05:37:49 -0400 |
| commit | dac97e516c617f9c797f64b0224050b70aea30c7 (patch) | |
| tree | c5c7e7a40e649ee9beb9014b284d3a6e66fb94f2 /fs/btrfs/extent-tree.c | |
| parent | c622ae6085d0c6ad834213bbf1477eb311359078 (diff) | |
| download | lwn-dac97e516c617f9c797f64b0224050b70aea30c7.tar.gz lwn-dac97e516c617f9c797f64b0224050b70aea30c7.zip | |
Btrfs: fix uncheck memory allocations
To make Btrfs code more robust, several return value checks where memory
allocation can fail are introduced. I use BUG_ON where I don't know how
to handle the error properly, which increases the number of using the
notorious BUG_ON, though.
Signed-off-by: Yoshinori Sano <yoshinori.sano@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 1efeda3b2f6f..cd0b69f57375 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -6978,6 +6978,10 @@ static noinline int get_new_locations(struct inode *reloc_inode, struct disk_extent *old = exts; max *= 2; exts = kzalloc(sizeof(*exts) * max, GFP_NOFS); + if (!exts) { + ret = -ENOMEM; + goto out; + } memcpy(exts, old, sizeof(*exts) * nr); if (old != *extents) kfree(old); |