linux-kernel - Re: WARNING in __mark_chain

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Message-ID: <000000000000d676f2058d37b4a9@google.com>
Date:   Mon, 08 Jul 2019 21:08:00 -0700
From:   syzbot <syzbot+4da3ff23081bafe74fc2@...kaller.appspotmail.com>
To:     andrii.nakryiko@...il.com, ast@...nel.org, bcrl@...ck.org,
        bpf@...r.kernel.org, daniel@...earbox.net, davem@...emloft.net,
        hawk@...nel.org, jakub.kicinski@...ronome.com,
        john.fastabend@...il.com, kafai@...com, linux-aio@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org,
        viro@...iv.linux.org.uk, xdp-newbies@...r.kernel.org, yhs@...com
Subject: Re: WARNING in __mark_chain_precision

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+4da3ff23081bafe74fc2@...kaller.appspotmail.com

Tested on:

commit:         b9321614 bpf: fix precision bit propagation for BPF_ST ins..
git tree:       https://github.com/anakryiko/linux bpf-fix-precise-bpf_st
kernel config:  https://syzkaller.appspot.com/x/.config?x=6bb3e6e7997c14f9
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Note: testing is done by a robot and is best-effort only.