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Date: Thu, 3 Jan 2019 14:38:11 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: "Theodore Ts'o" <tytso@....edu> Cc: Andreas Dilger <adilger.kernel@...ger.ca>, linux-ext4@...r.kernel.org, kernel-janitors@...r.kernel.org Subject: [PATCH] ext4: Fix some error pointer dereferences We can't pass error pointers to brelse(). Fixes: fb265c9cb49e ("ext4: add ext4_sb_bread() to disambiguate ENOMEM cases") Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com> --- fs/ext4/xattr.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 7fddd519adae..6ddbbe21fdd8 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -829,6 +829,7 @@ int ext4_get_inode_usage(struct inode *inode, qsize_t *usage) bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO); if (IS_ERR(bh)) { ret = PTR_ERR(bh); + bh = NULL; goto out; } @@ -2903,6 +2904,7 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode, if (error == -EIO) EXT4_ERROR_INODE(inode, "block %llu read error", EXT4_I(inode)->i_file_acl); + bh = NULL; goto cleanup; } error = ext4_xattr_check_block(inode, bh); @@ -3059,6 +3061,7 @@ ext4_xattr_block_cache_find(struct inode *inode, if (IS_ERR(bh)) { if (PTR_ERR(bh) == -ENOMEM) return NULL; + bh = NULL; EXT4_ERROR_INODE(inode, "block %lu read error", (unsigned long)ce->e_value); } else if (ext4_xattr_cmp(header, BHDR(bh)) == 0) { -- 2.17.1
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