linux-kernel - Re: [syzbot] KASAN: use-after-free Read in __vma

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Date:   Sun, 12 Jun 2022 15:08:08 -0700
From:   syzbot <syzbot+68771c0e74f7bb7804e5@...kaller.appspotmail.com>
To:     Liam.Howlett@...cle.com, akpm@...ux-foundation.org,
        liam.howlett@...cle.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, syzkaller-bugs@...glegroups.com,
        willy@...radead.org
Subject: Re: [syzbot] KASAN: use-after-free Read in __vma_adjust

syzbot has bisected this issue to:

commit d3ccd17e7c9647b956d415acdf3e3fde7ae9e20c
Author: Liam R. Howlett <Liam.Howlett@...cle.com>
Date:   Thu Jun 9 20:57:09 2022 +0000

    mm: start tracking VMAs with maple tree

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11463853f00000
start commit:   6d0c80680317 Add linux-next specific files for 20220610
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=13463853f00000
console output: https://syzkaller.appspot.com/x/log.txt?x=15463853f00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a30d6e3e814e5931
dashboard link: https://syzkaller.appspot.com/bug?extid=68771c0e74f7bb7804e5
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12e632bbf00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=103df80ff00000

Reported-by: syzbot+68771c0e74f7bb7804e5@...kaller.appspotmail.com
Fixes: d3ccd17e7c96 ("mm: start tracking VMAs with maple tree")

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