From: Alexander Potapenko glider@google.com
[ Upstream commit b1b9896718bc1a212dc288ad66a5fa2fef11353d ]
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.
Suggested-by: Eric Biggers ebiggers@kernel.org Fixes: 95ae251fe828 ("f2fs: add fs-verity support") Signed-off-by: Alexander Potapenko glider@google.com Reviewed-by: Eric Biggers ebiggers@google.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/verity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c index 26e7154168291..d5a50e73ec32b 100644 --- a/fs/f2fs/verity.c +++ b/fs/f2fs/verity.c @@ -78,7 +78,7 @@ static int pagecache_write(struct inode *inode, const void *buf, size_t count, size_t n = min_t(size_t, count, PAGE_SIZE - offset_in_page(pos)); struct page *page; - void *fsdata; + void *fsdata = NULL; int res;
res = pagecache_write_begin(NULL, inode->i_mapping, pos, n, 0,