linux-kernel - Re: KASAN: use-after-free Read in _

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Date:   Thu, 07 Nov 2019 05:42:09 -0800
From:   syzbot <syzbot+ceded3495a1d59f2d244@...kaller.appspotmail.com>
To:     hpa@...or.com, kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        liran.alon@...cle.com, luto@...nel.org, mark.kanda@...cle.com,
        mingo@...hat.com, patrick.colp@...cle.com, pbonzini@...hat.com,
        rkrcmar@...hat.com, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, x86@...nel.org
Subject: Re: KASAN: use-after-free Read in __schedule (2)

syzbot suspects this bug was fixed by commit:

commit 26b471c7e2f7befd0f59c35b257749ca57e0ed70
Author: Liran Alon <liran.alon@...cle.com>
Date:   Sun Sep 16 11:28:20 2018 +0000

     KVM: nVMX: Fix bad cleanup on error of get/set nested state IOCTLs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14830572600000
start commit:   234b69e3 ocfs2: fix ocfs2 read block panic
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=5fa12be50bca08d8
dashboard link: https://syzkaller.appspot.com/bug?extid=ceded3495a1d59f2d244
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1634bbae400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1728324e400000

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

#syz fix: KVM: nVMX: Fix bad cleanup on error of get/set nested state IOCTLs

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