This is a note to let you know that I've just added the patch titled
ceph: Use kcalloc for allocating multiple elements
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ceph-use-kcalloc-for-allocating-multiple-elements.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0f58d7c37861a931d5c3a321f41409c073609c34
Author: Kenneth Lee <klee33@xxxxxx>
Date: Thu Aug 18 22:42:55 2022 -0700
ceph: Use kcalloc for allocating multiple elements
[ Upstream commit aa1d627207cace003163dee24d1c06fa4e910c6b ]
Prefer using kcalloc(a, b) over kzalloc(a * b) as this improves
semantics since kcalloc is intended for allocating an array of memory.
Signed-off-by: Kenneth Lee <klee33@xxxxxx>
Reviewed-by: Xiubo Li <xiubli@xxxxxxxxxx>
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Stable-dep-of: 5bd76b8de5b7 ("ceph: fix NULL pointer dereference for req->r_session")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 883bb91ee257..a6e2aaff17dd 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2255,7 +2255,7 @@ static int unsafe_request_wait(struct inode *inode)
struct ceph_mds_request *req;
int i;
- sessions = kzalloc(max_sessions * sizeof(s), GFP_KERNEL);
+ sessions = kcalloc(max_sessions, sizeof(s), GFP_KERNEL);
if (!sessions) {
err = -ENOMEM;
goto out;
