netdev - Re: [syzbot] [kernel?] bpf-next test error: UBSAN: array-index-out-of-bounds in alloc

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Date: Mon, 3 Jul 2023 10:00:12 +0200
From: Christian Brauner <brauner@...nel.org>
To: syzbot <syzbot+319a9b09e5de1ecae1e1@...kaller.appspotmail.com>
Cc: ast@...nel.org, daniel@...earbox.net, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [kernel?] bpf-next test error: UBSAN:
 array-index-out-of-bounds in alloc_pid

On Mon, Jul 03, 2023 at 12:14:17AM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    c20f9cef725b Merge branch 'libbpf: add netfilter link atta..
> git tree:       bpf-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=127adbfb280000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=924167e3666ff54c
> dashboard link: https://syzkaller.appspot.com/bug?extid=319a9b09e5de1ecae1e1
> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/bf9c9608a1e0/disk-c20f9cef.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/3bde4e994bd0/vmlinux-c20f9cef.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/5d80f8634183/bzImage-c20f9cef.xz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+319a9b09e5de1ecae1e1@...kaller.appspotmail.com

#syz fix: pid: Replace struct pid 1-element array with flex-array