From eef034ac6690118c88f357b00e2b3239c9d8575d Mon Sep 17 00:00:00 2001
From: Alexander Potapenko <glider@google.com>
Date: Tue, 10 Jan 2023 13:49:30 +0100
Subject: [PATCH] affs: initialize fsdata in affs_truncate()
Git-commit: eef034ac6690118c88f357b00e2b3239c9d8575d
Patch-mainline: v6.2-rc5
References: git-fixes
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.
Fixes: f2b6a16eb8f5 ("fs: affs convert to new aops")
Suggested-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Alexander Potapenko <glider@google.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Anthony Iliopoulos <ailiop@suse.com>
---
fs/affs/file.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/affs/file.c b/fs/affs/file.c
index cefa222f7881..8daeed31e1af 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -880,7 +880,7 @@ affs_truncate(struct inode *inode)
if (inode->i_size > AFFS_I(inode)->mmu_private) {
struct address_space *mapping = inode->i_mapping;
struct page *page;
- void *fsdata;
+ void *fsdata = NULL;
loff_t isize = inode->i_size;
int res;
--
2.35.3