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Date:   Tue, 11 Aug 2020 18:07:05 -0700
From:   syzbot <syzbot+02d9172bf4c43104cd70@...kaller.appspotmail.com>
To:     a.darwish@...utronix.de, akpm@...ux-foundation.org,
        bsegall@...gle.com, changbin.du@...el.com,
        clang-built-linux@...glegroups.com, davem@...emloft.net,
        dietmar.eggemann@....com, dvyukov@...gle.com, elver@...gle.com,
        ericvh@...il.com, hverkuil-cisco@...all.nl, jpa@....mail.kapsi.fi,
        juri.lelli@...hat.com, kasan-dev@...glegroups.com,
        keescook@...omium.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-sparse@...r.kernel.org, luc.vanoostenryck@...il.com,
        lucho@...kov.net, mark.rutland@....com, masahiroy@...nel.org,
        mchehab@...nel.org, mgorman@...e.de, mhiramat@...nel.org,
        michal.lkml@...kovi.net, miguel.ojeda.sandonis@...il.com,
        mingo@...hat.com, netdev@...r.kernel.org, paulmck@...nel.org,
        peterz@...radead.org, rminnich@...dia.gov, rostedt@...dmis.org,
        rppt@...nel.org, samitolvanen@...gle.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        v9fs-developer@...ts.sourceforge.net, vincent.guittot@...aro.org,
        viro@...iv.linux.org.uk, vivek.kasireddy@...el.com,
        will@...nel.org, yepeilin.cs@...il.com
Subject: Re: KASAN: global-out-of-bounds Read in precalculate_color

syzbot suspects this issue was fixed by commit:

commit dfd402a4c4baae42398ce9180ff424d589b8bffc
Author: Marco Elver <elver@...gle.com>
Date:   Thu Nov 14 18:02:54 2019 +0000

    kcsan: Add Kernel Concurrency Sanitizer infrastructure

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13eb65d6900000
start commit:   46cf053e Linux 5.5-rc3
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=ed9d672709340e35
dashboard link: https://syzkaller.appspot.com/bug?extid=02d9172bf4c43104cd70
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=147e5ac1e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14b49e71e00000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: kcsan: Add Kernel Concurrency Sanitizer infrastructure

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

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