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udf: initialize newblock to 0

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commit 23970a1c9475b305770fd37bebfec7a10f263787 upstream.

The clang build reports this error
fs/udf/inode.c:805:6: error: variable 'newblock' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
        if (*err < 0)
            ^~~~~~~~
newblock is never set before error handling jump.
Initialize newblock to 0 and remove redundant settings.

Fixes: d8b39db5fab8 ("udf: Handle error when adding extent to a file")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20221230175341.1629734-1-trix@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tom Rix
2022-12-30 12:53:41 -05:00
committed by Greg Kroah-Hartman
parent de7a1e1754
commit cf23c6e667
1 changed files with 1 additions and 3 deletions
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4
fs/udf/inode.c
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@@ -689,7 +689,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block,
struct kernel_lb_addr eloc, tmpeloc; struct kernel_lb_addr eloc, tmpeloc;
int c = 1; int c = 1;
loff_t lbcount = 0, b_off = 0; loff_t lbcount = 0, b_off = 0;
udf_pblk_t newblocknum, newblock; udf_pblk_t newblocknum, newblock = 0;
sector_t offset = 0; sector_t offset = 0;
int8_t etype; int8_t etype;
struct udf_inode_info *iinfo = UDF_I(inode); struct udf_inode_info *iinfo = UDF_I(inode);
@@ -792,7 +792,6 @@ static sector_t inode_getblk(struct inode *inode, sector_t block,
ret = udf_do_extend_file(inode, &prev_epos, laarr, hole_len); ret = udf_do_extend_file(inode, &prev_epos, laarr, hole_len);
if (ret < 0) { if (ret < 0) {
*err = ret; *err = ret;
newblock = 0;
goto out_free; goto out_free;
} }
c = 0; c = 0;
@@ -855,7 +854,6 @@ static sector_t inode_getblk(struct inode *inode, sector_t block,
goal, err); goal, err);
if (!newblocknum) { if (!newblocknum) {
*err = -ENOSPC; *err = -ENOSPC;
newblock = 0;
goto out_free; goto out_free;
} }
if (isBeyondEOF) if (isBeyondEOF)