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

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Message-Id: <20240718123404.59833-1-aha310510@gmail.com>
Date: Thu, 18 Jul 2024 21:34:04 +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 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index af474cc191d0..2088b566d10b 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2895,7 +2895,7 @@ static int virtnet_open(struct net_device *dev)
 	for (i = 0; i < vi->max_queue_pairs; i++) {
 		if (i < vi->curr_queue_pairs)
 			/* Make sure we have some buffers: if oom use wq. */
-			if (!try_fill_recv(vi, &vi->rq[i], GFP_KERNEL))
+			if (!try_fill_recv(vi, &vi->rq[i], GFP_KERNEL | __GFP_ZERO))
 				schedule_delayed_work(&vi->refill, 0);
 
 		err = virtnet_enable_queue_pair(vi, i);
--