From e121bd48b9eb8e3b9104d3d5d08fdf88e9ca0f97 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 30 Oct 2020 14:46:20 +0300 Subject: ext4: silence an uninitialized variable warning Smatch complains that "i" can be uninitialized if we don't enter the loop. I don't know if it's possible but we may as well silence this warning. [ Initialize i to sb->s_blocksize instead of 0. The only way the for loop could be skipped entirely is the in-memory data structures, in particular the bh->b_data for the on-disk superblock has gotten corrupted enough that calculated value of group is >= to ext4_get_groups_count(sb). In that case, we want to exit immediately without allocating a block. -- TYT ] Fixes: 8016e29f4362 ("ext4: fast commit recovery path") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/20201030114620.GB3251003@mwanda Signed-off-by: Theodore Ts'o Cc: stable@kernel.org --- fs/ext4/mballoc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/ext4/mballoc.c') diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 85abbfb98cbe..f067e83f149e 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -5167,7 +5167,7 @@ static ext4_fsblk_t ext4_mb_new_blocks_simple(handle_t *handle, struct super_block *sb = ar->inode->i_sb; ext4_group_t group; ext4_grpblk_t blkoff; - int i; + int i = sb->s_blocksize; ext4_fsblk_t goal, block; struct ext4_super_block *es = EXT4_SB(sb)->s_es; -- cgit v1.2.3-59-g8ed1b