Commit 74b7046d authored by Alexander Potapenko's avatar Alexander Potapenko Committed by Andrew Morton
Browse files

fs: hfsplus: initialize fsdata in hfsplus_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/20221121112134.407362-5-glider@google.com


Signed-off-by: default avatarAlexander Potapenko <glider@google.com>
Suggested-by: default avatarEric 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: default avatarAndrew Morton <akpm@linux-foundation.org>
parent e52a418d

fs/hfsplus/extents.c

+1 −1
Original line number Diff line number Diff line
@@ -554,7 +554,7 @@ void hfsplus_file_truncate(struct inode *inode) 
	if (inode->i_size > hip->phys_size) {

		struct address_space *mapping = inode->i_mapping;

		struct page *page;

		void *fsdata;

		void *fsdata = NULL;

		loff_t size = inode->i_size;



		res = hfsplus_write_begin(NULL, mapping, size, 0,