linux-kernel - Re: [syzbot] [kvm?] KASAN: slab-use-after-free Write in kvm_gmem

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Message-ID: <68fbdd1a.a00a0220.9662e.000c.GAE@google.com>
Date: Fri, 24 Oct 2025 13:10:02 -0700
From: syzbot <syzbot+2479e53d0db9b32ae2aa@...kaller.appspotmail.com>
To: david@...hat.com, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	pbonzini@...hat.com, seanjc@...gle.com, syzkaller-bugs@...glegroups.com, 
	tabba@...gle.com, xiaoyao.li@...el.com
Subject: Re: [syzbot] [kvm?] KASAN: slab-use-after-free Write in kvm_gmem_release

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

failed to apply patch:
checking file virt/kvm/guest_memfd.c
Hunk #1 FAILED at 708.
Hunk #2 succeeded at 648 with fuzz 2 (offset -84 lines).
1 out of 2 hunks FAILED

Tested on:

commit:         2e590d67 Merge tag 'devicetree-fixes-for-6.18-2' of gi..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=67b63a24f3c26fca
dashboard link: https://syzkaller.appspot.com/bug?extid=2479e53d0db9b32ae2aa
compiler:       
patch:          https://syzkaller.appspot.com/x/patch.diff?x=15343b04580000