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From: Jeongjun Park <aha310510@gmail.com>
To: syzbot+6c21aeb59d0e82eb2782@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [virt?] [net?] KMSAN: uninit-value in vsock_assign_transport (2)
Date: Fri, 19 Apr 2024 21:39:59 +0900	[thread overview]
Message-ID: <20240419123959.8572-1-aha310510@gmail.com> (raw)
In-Reply-To: <000000000000be4e1c06166fdc85@google.com>


please test uninit-value in vsock_assign_transport

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

---
 drivers/vhost/vsock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index ec20ecff85c7..652ef97a444b 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -656,7 +656,7 @@ static int vhost_vsock_dev_open(struct inode *inode, struct file *file)
 	/* This struct is large and allocation could fail, fall back to vmalloc
 	 * if there is no other way.
 	 */
-	vsock = kvmalloc(sizeof(*vsock), GFP_KERNEL | __GFP_RETRY_MAYFAIL);
+	vsock = kvzmalloc(sizeof(*vsock), GFP_KERNEL | __GFP_RETRY_MAYFAIL);
 	if (!vsock)
 		return -ENOMEM;
 
-- 
2.34.1


  reply	other threads:[~2024-04-19 12:40 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-19  9:39 syzbot
2024-04-19 12:39 ` Jeongjun Park [this message]
2024-04-19 14:44   ` syzbot
2024-04-19 14:56 ` Jeongjun Park
2024-04-19 15:39   ` syzbot
2024-04-20  8:57 ` [PATCH virt] virt: fix uninit-value in vhost_vsock_dev_open Jeongjun Park
2024-04-20 10:05   ` Michael S. Tsirkin
2024-04-21  3:06     ` Jeongjun Park
2024-04-22 13:00       ` Stefan Hajnoczi
2024-04-22 14:20         ` Michael S. Tsirkin
2024-05-05 19:53           ` Arseniy Krasnov
2024-04-22 14:18 ` [syzbot] [virt?] [net?] KMSAN: uninit-value in vsock_assign_transport (2) Michael S. Tsirkin
2024-04-23  1:31   ` syzbot

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