linux-kernel - Re: [syzbot] [bpf?] WARNING in __mark_chain

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Date: Tue, 9 Jan 2024 15:11:11 -0800
From: Andrii Nakryiko <andrii.nakryiko@...il.com>
To: syzbot <syzbot+4d6330e14407721955eb@...kaller.appspotmail.com>
Cc: andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org, 
	daniel@...earbox.net, eddyz87@...il.com, haoluo@...gle.com, 
	john.fastabend@...il.com, jolsa@...nel.org, kpsingh@...nel.org, 
	linux-kernel@...r.kernel.org, martin.lau@...ux.dev, sdf@...gle.com, 
	song@...nel.org, syzkaller-bugs@...glegroups.com, yonghong.song@...ux.dev
Subject: Re: [syzbot] [bpf?] WARNING in __mark_chain_precision (3)

On Sun, Dec 10, 2023 at 9:31 AM syzbot
<syzbot+4d6330e14407721955eb@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
>
> Reported-and-tested-by: syzbot+4d6330e14407721955eb@...kaller.appspotmailcom
>
> Tested on:
>
> commit:         482d548d bpf: handle fake register spill to stack with..
> git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
> console output: https://syzkaller.appspot.com/x/log.txt?x=16064fcae80000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=f8715b6ede5c4b90
> dashboard link: https://syzkaller.appspot.com/bug?extid=4d6330e14407721955eb
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
>
> Note: no patches were applied.
> Note: testing is done by a robot and is best-effort only.

#syz fix: 482d548d bpf: handle fake register spill to stack with
BPF_ST_MEM instruction