linux-kernel - Re: [syzbot] [hfs?] possible deadlock in hfsplus_block

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Date: Thu, 14 Mar 2024 01:20:03 -0700
From: syzbot <syzbot+b6ccd31787585244a855@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, fmdefrancesco@...il.com, ira.weiny@...el.com, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	pbonzini@...hat.com, seanjc@...gle.com, slava@...eyko.com, 
	syzkaller-bugs@...glegroups.com, yongwei.ma@...el.com
Subject: Re: [syzbot] [hfs?] possible deadlock in hfsplus_block_allocate

syzbot has bisected this issue to:

commit 427c76aed29ec12a57f11546a5036df3cc52855e
Author: Sean Christopherson <seanjc@...gle.com>
Date:   Sat Jul 29 01:35:32 2023 +0000

    KVM: x86/mmu: Bug the VM if write-tracking is used but not enabled

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1779a8c9180000
start commit:   61387b8dcf1d Merge tag 'for-6.9/dm-vdo' of git://git.kerne..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=14f9a8c9180000
console output: https://syzkaller.appspot.com/x/log.txt?x=10f9a8c9180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e30ff6b515606856
dashboard link: https://syzkaller.appspot.com/bug?extid=b6ccd31787585244a855
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=129e58c9180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154b15d6180000

Reported-by: syzbot+b6ccd31787585244a855@...kaller.appspotmail.com
Fixes: 427c76aed29e ("KVM: x86/mmu: Bug the VM if write-tracking is used but not enabled")

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