Commit 1f2f72ef authored Aug 18, 2022 by Kenneth Lee Committed by sanglipeng Jul 25, 2023

ceph: Use kcalloc for allocating multiple elements

stable inclusion
from stable-v5.10.157
commit 00c004c070f22a47063de4ff2a5638fce1f94d95
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7MU59

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=00c004c070f22a47063de4ff2a5638fce1f94d95



--------------------------------

[ Upstream commit aa1d6272 ]

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@uw.edu>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Stable-dep-of: 5bd76b8d ("ceph: fix NULL pointer dereference for req->r_session")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>

parent 60dfdf31

fs/ceph/caps.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -2335,7 +2335,7 @@ static int unsafe_request_wait(struct inode *inode)
	struct ceph_mds_request *req;		struct ceph_mds_request *req;
	int i;		int i;

	sessions = kzalloc(max_sessions * sizeof(s), GFP_KERNEL);		sessions = kcalloc(max_sessions, sizeof(s), GFP_KERNEL);
	if (!sessions) {		if (!sessions) {
	err = -ENOMEM;		err = -ENOMEM;
	goto out;		goto out;