Re: [syzbot] [kvm?] [kvm-x86?] KASAN: use-after-free Read in kvm_xen_shared_info_init

[David Woodhouse]

On Wed, 2026-08-05 at 08:46 -0700, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
> 
> Reported-by: syzbot+0948c82180d475ad24e2@xxxxxxxxxxxxxxxxxxxxxxxxx
> Tested-by: syzbot+0948c82180d475ad24e2@xxxxxxxxxxxxxxxxxxxxxxxxx
> 
> Tested on:
> 
> commit:         bd2b92fd [NOT-FOR-UPSTREAM] repro: pfncache HVA-invali..
> git tree:       git://git.infradead.org/users/dwmw2/linux.git pfncache-fixes
> console output: https://syzkaller.appspot.com/x/log.txt?x=10362bb9580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=145fa60d73086782
> dashboard link: https://syzkaller.appspot.com/bug?extid=0948c82180d475ad24e2
> compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
> 
> Note: no patches were applied.
> Note: testing is done by a robot and is best-effort only.

#syz test: git://git.infradead.org/users/dwmw2/linux.git pfncache-rcu

Attachment: smime.p7s
Description: S/MIME cryptographic signature