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fs: hfs: initialize fsdata in hfs_file_truncate() 

When aops->write_begin() does not initialize fsdata, KMSAN may report an
error passing the latter to aops->write_end().

Fix this by unconditionally initializing fsdata.

Link: https://lkml.kernel.org/r/20221121112134.407362-4-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Suggested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Chao Yu <chao@kernel.org>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Alexander Potapenko 2022-11-21 12:21:33 +01:00 committed by Andrew Morton
parent e5576ac8c9
commit e52a418d81
1 changed files with 1 additions and 1 deletions
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2
fs/hfs/extent.c
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@ -486,7 +486,7 @@ void hfs_file_truncate(struct inode *inode)
inode->i_size);
if (inode->i_size > HFS_I(inode)->phys_size) {
struct address_space *mapping = inode->i_mapping;
void *fsdata;
void *fsdata = NULL;
struct page *page;
/* XXX: Can use generic_cont_expand? */