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authorAditya Pakki <pakki001@umn.edu>2019-03-20 19:47:20 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2019-03-22 13:27:44 +0300
commit48f40b96de2c790eac6114e3e879a48fe9f89349 (patch)
tree9bee318598daaab1af8e2c7c5d9bde61fa75328e /drivers/thunderbolt
parent9aabb68568b473bf2f0b179d053b403961e42e4d (diff)
downloadlinux-48f40b96de2c790eac6114e3e879a48fe9f89349.tar.xz
thunderbolt: xdomain: Fix to check return value of kmemdup
kmemdup can fail and return a NULL pointer. The patch modifies the signature of tb_xdp_schedule_request and passes the failure error upstream. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
-rw-r--r--drivers/thunderbolt/xdomain.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c
index e0642dcb8b9b..e2fc4543142d 100644
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -526,7 +526,7 @@ out:
kfree(xw);
}
-static void
+static bool
tb_xdp_schedule_request(struct tb *tb, const struct tb_xdp_header *hdr,
size_t size)
{
@@ -534,13 +534,18 @@ tb_xdp_schedule_request(struct tb *tb, const struct tb_xdp_header *hdr,
xw = kmalloc(sizeof(*xw), GFP_KERNEL);
if (!xw)
- return;
+ return false;
INIT_WORK(&xw->work, tb_xdp_handle_request);
xw->pkg = kmemdup(hdr, size, GFP_KERNEL);
+ if (!xw->pkg) {
+ kfree(xw);
+ return false;
+ }
xw->tb = tb;
queue_work(tb->wq, &xw->work);
+ return true;
}
/**
@@ -1422,10 +1427,8 @@ bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
* handlers in turn.
*/
if (uuid_equal(&hdr->uuid, &tb_xdp_uuid)) {
- if (type == TB_CFG_PKG_XDOMAIN_REQ) {
- tb_xdp_schedule_request(tb, hdr, size);
- return true;
- }
+ if (type == TB_CFG_PKG_XDOMAIN_REQ)
+ return tb_xdp_schedule_request(tb, hdr, size);
return false;
}