linux-kernel - Re: WARNING: suspicious RCU usage in kvm_dev

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Message-ID: <000000000000742ddc059669bc92@google.com>
Date:   Sat, 02 Nov 2019 21:36:01 -0700
From:   syzbot <syzbot+75475908cd0910f141ee@...kaller.appspotmail.com>
To:     jmattson@...gle.com, jsperbeck@...gle.com, junaids@...gle.com,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        pbonzini@...hat.com, rkrcmar@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: WARNING: suspicious RCU usage in kvm_dev_ioctl

syzbot has bisected this bug to:

commit a97b0e773e492ae319a7e981e98962a1060215f9
Author: Jim Mattson <jmattson@...gle.com>
Date:   Fri Oct 25 11:34:58 2019 +0000

     kvm: call kvm_arch_destroy_vm if vm creation fails

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13f19914e00000
start commit:   9d234505 Merge tag 'hwmon-for-v5.4-rc6' of git://git.kerne..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=10099914e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=17f19914e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=cbbed3e8d4eb64bf
dashboard link: https://syzkaller.appspot.com/bug?extid=75475908cd0910f141ee
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14e20268e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15209b84e00000

Reported-by: syzbot+75475908cd0910f141ee@...kaller.appspotmail.com
Fixes: a97b0e773e49 ("kvm: call kvm_arch_destroy_vm if vm creation fails")

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