Re: [syzbot] [arm-msm?] [net?] memory leak in radix_tree_insert

[syzbot]

For archival purposes, forwarding an incoming command email to
linux-kernel@xxxxxxxxxxxxxxx.

***

Subject: [arm-msm?] [net?] memory leak in radix_tree_insert
Author: eadavis@xxxxxx

please test memory leak in radix_tree_insert

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 33cc938e65a9

diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c
index 41ece61eb57a..f08f7ba7d2b1 100644
--- a/net/qrtr/af_qrtr.c
+++ b/net/qrtr/af_qrtr.c
@@ -911,6 +911,9 @@ static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
 	u32 type;
 	int rc;
 
+	if (!msg->msg_iter.count)
+		return -EINVAL;
+
 	if (msg->msg_flags & ~(MSG_DONTWAIT))
 		return -EINVAL;