Re: [syzbot] [iommu?] WARNING in iommufd_hw_pagetable_detach

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+3b81771e32dd5b2f9931@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         4b0f4525 Add linux-next specific files for 20230331
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=1391d1cdc80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=85cc4b935a1f7194
dashboard link: https://syzkaller.appspot.com/bug?extid=3b81771e32dd5b2f9931
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1729c4c9c80000

Note: testing is done by a robot and is best-effort only.