linux-kernel - Re: [syzbot] [net?] KMSAN: uninit-value in hsr_get

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Message-Id: <20240719162238.71387-1-aha310510@gmail.com>
Date: Sat, 20 Jul 2024 01:22:38 +0900
From: Jeongjun Park <aha310510@...il.com>
To: syzbot+a81f2759d022496b40ab@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [net?] KMSAN: uninit-value in hsr_get_node (3)

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

---
 drivers/net/virtio_net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index af474cc191d0..1ee2dff625dd 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2258,6 +2258,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
 
 	if (unlikely(!curr_skb))
 		goto err_skb;
+	printk(KERN_INFO "num_buf = %d\n", num_buf);
 	while (--num_buf) {
 		buf = virtnet_rq_get_buf(rq, &len, &ctx);
 		if (unlikely(!buf)) {
--