FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git x86/vt-d
commit a13c8f27e4d79420ae7bcb48123fa13851026428 ("iommu/vt-d: Adjust the return value of the parse_ioapics_under_ir")

We found the following new message in kernel log.

[    0.126325] DMAR-IR: Failed to enable irq remapping. You are vulnerable to irq-injection attacks.


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Ying Huang