linux-kernel - Re: [syzbot] [arm-msm?] [net?] memory leak in radix_tree

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Message-ID: <00000000000046a8a3060c0c4d2c@google.com>
Date:   Fri, 08 Dec 2023 20:40:35 -0800
From:   syzbot <syzbot+006987d1be3586e13555@...kaller.appspotmail.com>
To:     linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [arm-msm?] [net?] memory leak in radix_tree_insert

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

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;