linux-kernel - Re: BUG: unable to handle kernel NULL pointer dereference in call

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Message-ID: <0000000000002e14c105bc14962e@google.com>
Date:   Wed, 24 Feb 2021 04:58:08 -0800
From:   syzbot <syzbot+9d3ede723bdc58553f13@...kaller.appspotmail.com>
To:     adobriyan@...il.com, akpm@...ux-foundation.org,
        andreyknvl@...gle.com, aryabinin@...tuozzo.com, dvyukov@...gle.com,
        elver@...gle.com, glider@...gle.com, gustavoars@...nel.org,
        linux-kernel@...r.kernel.org, longman@...hat.com,
        sfr@...b.auug.org.au, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org, vincenzo.frascino@....com,
        vvs@...tuozzo.com, walter-zh.wu@...iatek.com
Subject: Re: BUG: unable to handle kernel NULL pointer dereference in call_rcu

syzbot has bisected this issue to:

commit 97593cad003c668e2532cb2939a24a031f8de52d
Author: Andrey Konovalov <andreyknvl@...gle.com>
Date:   Tue Dec 22 20:03:28 2020 +0000

    kasan: sanitize objects when metadata doesn't fit

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=106689b6d00000
start commit:   614cb589 Merge tag 'acpi-5.11-rc1-2' of git://git.kernel.o..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=126689b6d00000
console output: https://syzkaller.appspot.com/x/log.txt?x=146689b6d00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=bf519e1e96191576
dashboard link: https://syzkaller.appspot.com/bug?extid=9d3ede723bdc58553f13
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11830e93500000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13d92057500000

Reported-by: syzbot+9d3ede723bdc58553f13@...kaller.appspotmail.com
Fixes: 97593cad003c ("kasan: sanitize objects when metadata doesn't fit")

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