[PATCH][next] fs: Fix uninitialized scalar variable now

From: Everest K.C.
Date: Wed Oct 09 2024 - 16:07:01 EST


Variable `now` is declared without initialization. The variable
could be accessed inside the if-else statements following the
variable declaration, before it has been initialized.

This patch initializes the variable to
`inode_set_ctime_current(inode)` by default.

This issue was reported by Coverity Scan.

Signed-off-by: Everest K.C. <everestkc@xxxxxxxxxxxxxxxx>
---
fs/attr.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/attr.c b/fs/attr.c
index c614b954bda5..77523af2e62d 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -284,7 +284,7 @@ EXPORT_SYMBOL(inode_newsize_ok);
static void setattr_copy_mgtime(struct inode *inode, const struct iattr *attr)
{
unsigned int ia_valid = attr->ia_valid;
- struct timespec64 now;
+ struct timespec64 now = inode_set_ctime_current(inode);

if (ia_valid & ATTR_CTIME) {
/*
@@ -293,8 +293,6 @@ static void setattr_copy_mgtime(struct inode *inode, const struct iattr *attr)
*/
if (ia_valid & ATTR_DELEG)
now = inode_set_ctime_deleg(inode, attr->ia_ctime);
- else
- now = inode_set_ctime_current(inode);
} else {
/* If ATTR_CTIME isn't set, then ATTR_MTIME shouldn't be either. */
WARN_ON_ONCE(ia_valid & ATTR_MTIME);
--
2.43.0