linux-kernel - [syzbot] [net?] [virt?] upstream boot error: KMSAN: uninit-value in corrupted

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Date: Fri, 24 May 2024 19:56:22 -0700
From: syzbot <syzbot+f8f2e9a62c70487ab828@...kaller.appspotmail.com>
To: davem@...emloft.net, edumazet@...gle.com, jasowang@...hat.com, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, mst@...hat.com, 
	netdev@...r.kernel.org, pabeni@...hat.com, syzkaller-bugs@...glegroups.com, 
	virtualization@...ts.linux.dev, xuanzhuo@...ux.alibaba.com
Subject: [syzbot] [net?] [virt?] upstream boot error: KMSAN: uninit-value in corrupted

Hello,

syzbot found the following issue on:

HEAD commit:    8f6a15f095a6 Merge tag 'cocci-for-6.10' of git://git.kerne..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=119aa5cc980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d66c5ffb962c9d5b
dashboard link: https://syzkaller.appspot.com/bug?extid=f8f2e9a62c70487ab828
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0a053ab9d75b/disk-8f6a15f0.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a1cac58c3541/vmlinux-8f6a15f0.xz
kernel image: https://storage.googleapis.com/syzbot-assets/180b83fc69a9/bzImage-8f6a15f0.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f8f2e9a62c70487ab828@...kaller.appspotmail.com

Starting dhcpcd...
dhcpcd-9.4.1 starting
dev: loaded udev
DUID 00:04:19:0b:4d:1d:24:6b:9f:8b:bf:f7:85:18:31:02:d0:f0
forked to background, child pid 4697
Starting sshd: [  113.935289][    C0] BUG: KMSAN: uninit-value in receive_mergeable drivers/net/virtio_net.c:1839 [inline]
Starting sshd: [  113.935289][    C0] BUG: KMSAN: uninit-value in receive_buf+0x25e3/0x5fd0 drivers/net/virtio_net.c:1955

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

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