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>

parent 81abf252

fs/ext2/ialloc.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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) {