On Wed, Mar 18, 2026 at 07:47:18AM +0000, Tian, Kevin wrote:

quoted

From: Nicolin Chen <redacted>
Sent: Wednesday, March 18, 2026 3:16 AM

Hi all,

This series addresses a critical vulnerability and stability issue where an
unresponsive PCIe device failing to process ATC (Address Translation Cache)
invalidation requests leads to silent data corruption and continuous SMMU
CMDQ error spam.

None of the patches in this series contains a Fixed tag and cc stable.

Hmm, I guess AI overly polished the cover letter so it sounds too
strong?

This is essentially a vulnerability (potential memory corruption).
And none of these patches actually fixes any regression. The PATCH
7 even requires the arm_smmu_invs series which has not been merged
yet :-/

Nicolin