linux-kernel - Re: KASAN: slab-out-of-bounds Read in tick_sched

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Message-ID: <00000000000093e58e0584374110@google.com>
Date:   Sat, 16 Mar 2019 07:49:01 -0700
From:   syzbot <syzbot+09d51a30df9fe76edb2a@...kaller.appspotmail.com>
To:     davem@...emloft.net, fweisbec@...il.com, kuznet@....inr.ac.ru,
        linux-kernel@...r.kernel.org, mingo@...nel.org,
        netdev@...r.kernel.org, sbrivio@...hat.com, sd@...asysnail.net,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        yoshfuji@...ux-ipv6.org
Subject: Re: KASAN: slab-out-of-bounds Read in tick_sched_handle

syzbot has bisected this bug to:

commit b8a51b38e4d4dec3e379d52c0fe1a66827f7cf1e
Author: Stefano Brivio <sbrivio@...hat.com>
Date:   Thu Nov 8 11:19:23 2018 +0000

     fou, fou6: ICMP error handlers for FoU and GUE

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16f943e7200000
start commit:   b8a51b38 fou, fou6: ICMP error handlers for FoU and GUE
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=15f943e7200000
console output: https://syzkaller.appspot.com/x/log.txt?x=11f943e7200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b05cfdb4ee8ab9b2
dashboard link: https://syzkaller.appspot.com/bug?extid=09d51a30df9fe76edb2a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17359fab400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154a2a37400000

Reported-by: syzbot+09d51a30df9fe76edb2a@...kaller.appspotmail.com
Fixes: b8a51b38 ("fou, fou6: ICMP error handlers for FoU and GUE")