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| author | Karl Mehltretter <kmehltretter@gmail.com> | 2026-08-29 07:48:56 +0200 |
|---|---|---|
| committer | Oliver Upton <oupton@kernel.org> | 2026-09-15 15:09:57 -0700 |
| commit | 0a46eb5719fa57cc9d06025dcd8ba271643dee61 (patch) | |
| tree | a78ee234e396fb154d9af3bd994d53798e861e34 | |
| parent | 64dc6f1db7e620f2e9337bb181f305fb0561da79 (diff) | |
| download | linux-next-0a46eb5719fa57cc9d06025dcd8ba271643dee61.tar.gz linux-next-0a46eb5719fa57cc9d06025dcd8ba271643dee61.zip | |
KVM: arm64: selftests: Test empty SMCCC filter range at base 0
test_invalid_nr_functions() only checks an empty range at
PSCI_0_2_FN64_CPU_ON, which KVM's end < start check happens to catch.
It never exercised base 0, where the inclusive end wraps to U32_MAX
instead.
Add the base 0 case. Without the preceding fix it fails with EEXIST.
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>
Tested-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20260829054856.70549-3-kmehltretter@gmail.com
Signed-off-by: Oliver Upton <oupton@kernel.org>
| -rw-r--r-- | tools/testing/selftests/kvm/arm64/smccc_filter.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/arm64/smccc_filter.c b/tools/testing/selftests/kvm/arm64/smccc_filter.c index 21e41880261b..a41ed3e016ba 100644 --- a/tools/testing/selftests/kvm/arm64/smccc_filter.c +++ b/tools/testing/selftests/kvm/arm64/smccc_filter.c @@ -140,6 +140,10 @@ static void test_invalid_nr_functions(void) TEST_ASSERT(r < 0 && errno == EINVAL, "Attempt to filter 0 functions should return EINVAL"); + r = __set_smccc_filter(vm, 0, 0, KVM_SMCCC_FILTER_DENY); + TEST_ASSERT(r < 0 && errno == EINVAL, + "Attempt to filter 0 functions at base 0 should return EINVAL"); + kvm_vm_free(vm); } |