From: Nicolin Chen <nicolinc@nvidia.com>
To: Mostafa Saleh <smostafa@google.com>
Cc: <linux-kernel@vger.kernel.org>, <iommu@lists.linux.dev>,
<linux-arm-kernel@lists.infradead.org>, <will@kernel.org>,
<robin.murphy@arm.com>, <joro@8bytes.org>, <jgg@ziepe.ca>,
<praan@google.com>
Subject: Re: [PATCH 6/7] iommu/arm-smmu-v3-test: Fix OOB in arm_smmu_v3_invs_test_verify()
Date: Fri, 28 Aug 2026 09:14:06 -0700 [thread overview]
Message-ID: <apGzzm+O8XfCQRLY@nvidia.com> (raw)
In-Reply-To: <20260828125409.1921538-7-smostafa@google.com>
On Fri, Aug 28, 2026 at 12:53:41PM +0000, Mostafa Saleh wrote:
> arm_smmu_v3_invs_test_verify() validates the array bounds using
> KUNIT_EXPECT_EQ(), which triggers a failure and continues execution.
> If invs->num_invs was smaller than expected, the next loop over
> num_invs would blindly read past the end of the invs->inv[] array.
> Switch to KUNIT_ASSERT_EQ() to fail and stop the test on bound errors.
>
> Fixes: 15a2a5645ad7 ("iommu/arm-smmu-v3: Introduce a per-domain arm_smmu_invs array")
> Reported-by: Sashiko <>
> Signed-off-by: Mostafa Saleh <smostafa@google.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
next prev parent reply other threads:[~2026-08-28 16:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-28 12:53 [PATCH 0/7] iommu/arm-smmu-v3: Fixes reported by Sashiko Mostafa Saleh
2026-08-28 12:53 ` [PATCH 1/7] iommu/arm-smmu-v3: Ensure L2 tables are visible before L1 ptrs Mostafa Saleh
2026-08-28 14:27 ` Jason Gunthorpe
2026-08-28 16:03 ` Nicolin Chen
2026-08-28 12:53 ` [PATCH 2/7] iommu/arm-smmu-v3: Prevent rbtree corruption from duplicate streams Mostafa Saleh
2026-08-28 14:27 ` Jason Gunthorpe
2026-08-28 15:51 ` Nicolin Chen
2026-08-28 12:53 ` [PATCH 3/7] iommu/arm-smmu-v3-iommufd: Fix error path in arm_vsmmu_cache_invalidate() Mostafa Saleh
2026-08-28 14:27 ` Jason Gunthorpe
2026-08-28 12:53 ` [PATCH 4/7] iommu/arm-smmu-v3-test: Fix arm_smmu_v3_test_debug_print_used_bits() Mostafa Saleh
2026-08-28 14:27 ` Jason Gunthorpe
2026-08-28 16:12 ` Nicolin Chen
2026-08-28 12:53 ` [PATCH 5/7] iommu/arm-smmu-v3-test: Add missing error checks for inv array Mostafa Saleh
2026-08-28 14:27 ` Jason Gunthorpe
2026-08-28 12:53 ` [PATCH 6/7] iommu/arm-smmu-v3-test: Fix OOB in arm_smmu_v3_invs_test_verify() Mostafa Saleh
2026-08-28 14:27 ` Jason Gunthorpe
2026-08-28 16:14 ` Nicolin Chen [this message]
2026-08-28 12:53 ` [PATCH 7/7] iommu/arm-smmu-v3-test: Fix UBSAN error Mostafa Saleh
2026-08-28 14:27 ` Jason Gunthorpe
2026-08-28 16:14 ` Nicolin Chen
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