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udf: Handle error when adding extent to symlink

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When adding extent describing symlink data fails, make sure to handle
the error properly, propagate it up and free the already allocated
block.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2022-12-19 19:54:12 +01:00
parent 33e9a53cd9
commit 2b10074d91
1 changed files with 6 additions and 1 deletions
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7
fs/udf/namei.c
View file

@ -613,8 +613,12 @@ static int udf_symlink(struct user_namespace *mnt_userns, struct inode *dir,
iinfo->i_location.partitionReferenceNum; iinfo->i_location.partitionReferenceNum;
bsize = sb->s_blocksize; bsize = sb->s_blocksize;
iinfo->i_lenExtents = bsize; iinfo->i_lenExtents = bsize;
udf_add_aext(inode, &epos, &eloc, bsize, 0); err = udf_add_aext(inode, &epos, &eloc, bsize, 0);
brelse(epos.bh); brelse(epos.bh);
if (err < 0) {
udf_free_blocks(sb, inode, &eloc, 0, 1);
goto out_no_entry;
}
block = udf_get_pblock(sb, block, block = udf_get_pblock(sb, block,
iinfo->i_location.partitionReferenceNum, iinfo->i_location.partitionReferenceNum,
@ -622,6 +626,7 @@ static int udf_symlink(struct user_namespace *mnt_userns, struct inode *dir,
epos.bh = udf_tgetblk(sb, block); epos.bh = udf_tgetblk(sb, block);
if (unlikely(!epos.bh)) { if (unlikely(!epos.bh)) {
err = -ENOMEM; err = -ENOMEM;
udf_free_blocks(sb, inode, &eloc, 0, 1);
goto out_no_entry; goto out_no_entry;
} }
lock_buffer(epos.bh); lock_buffer(epos.bh);