diff options
| author |   Jan Kara <jack@suse.cz> | 2016-08-09 10:07:52 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2016-08-09 10:12:28 +0200 |
| commit | f7a1c358e51c21b80336413fb824e1a82df648b9 (patch) | |
| tree | f0c30066ab4ac93472b3d24324900f95022bb966 /fs/ext2 | |
| parent | Merge tag 'lkdtm-v4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux (diff) | |
| download | linux-dev-f7a1c358e51c21b80336413fb824e1a82df648b9.tar.xz linux-dev-f7a1c358e51c21b80336413fb824e1a82df648b9.zip | |
ext2: Check return value from ext2_get_group_desc()
ext2_get_group_desc() can return NULL if there is some error. This
usually means there is some programming error in the ext2 driver itself
but let's be defensive and handle that case.
Coverity-id: 115628
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext2')
| -rw-r--r-- | fs/ext2/ialloc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c index efe5fb21c533..04e73a99902b 100644 --- a/fs/ext2/ialloc.c +++ b/fs/ext2/ialloc.c @@ -465,6 +465,11 @@ struct inode *ext2_new_inode(struct inode *dir, umode_t mode, for (i = 0; i < sbi->s_groups_count; i++) { gdp = ext2_get_group_desc(sb, group, &bh2); + if (!gdp) { + if (++group == sbi->s_groups_count) + group = 0; + continue; + } brelse(bitmap_bh); bitmap_bh = read_inode_bitmap(sb, group); if (!bitmap_bh) { |