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>
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@ -465,6 +465,11 @@ struct inode *ext2_new_inode(struct inode *dir, umode_t mode,
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for (i = 0; i < sbi->s_groups_count; i++) {
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gdp = ext2_get_group_desc(sb, group, &bh2);
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if (!gdp) {
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if (++group == sbi->s_groups_count)
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group = 0;
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continue;
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}
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brelse(bitmap_bh);
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bitmap_bh = read_inode_bitmap(sb, group);
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if (!bitmap_bh) {
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