* [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK [not found] <20260707191136.1732277-1-bill.roberts@arm.com> @ 2026-07-07 19:11 ` Bill Roberts 2026-08-27 23:32 ` Edgecombe, Rick P 0 siblings, 1 reply; 5+ messages in thread From: Bill Roberts @ 2026-07-07 19:11 UTC (permalink / raw) To: rick.p.edgecombe, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, x86, H. Peter Anvin, Shuah Khan Cc: Bill Roberts, linux-kernel, linux-kselftest Test that ARCH_SHSTK_UNLOCK can't be called from normal (non-ptrace) context. Signed-off-by: Bill Roberts <bill.roberts@arm.com> --- tools/testing/selftests/x86/test_shadow_stack.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/testing/selftests/x86/test_shadow_stack.c b/tools/testing/selftests/x86/test_shadow_stack.c index 3d6ca33edba4..cbe7ca4ebd90 100644 --- a/tools/testing/selftests/x86/test_shadow_stack.c +++ b/tools/testing/selftests/x86/test_shadow_stack.c @@ -1059,6 +1059,14 @@ int main(int argc, char *argv[]) { int ret = 0; + /* Test that ARCH_SHSTK_UNLOCK can't be called from normal (non-ptrace) context. */ + if (!ARCH_PRCTL(ARCH_SHSTK_UNLOCK, ARCH_SHSTK_SHSTK)) { + printf("[FAIL]\tARCH_SHSTK_UNLOCK should fail in a non-ptrace context\n"); + goto out; + } + + printf("[OK]\tCouldn't enable Shadow stack via UNLOCK\n"); + if (ARCH_PRCTL(ARCH_SHSTK_ENABLE, ARCH_SHSTK_SHSTK)) { printf("[SKIP]\tCould not enable Shadow stack\n"); return 1; -- 2.54.0 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK 2026-07-07 19:11 ` [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK Bill Roberts @ 2026-08-27 23:32 ` Edgecombe, Rick P 2026-09-09 18:47 ` Bill Roberts 2026-09-09 20:25 ` Bill Roberts 0 siblings, 2 replies; 5+ messages in thread From: Edgecombe, Rick P @ 2026-08-27 23:32 UTC (permalink / raw) To: x86@kernel.org, dave.hansen@linux.intel.com, shuah@kernel.org, mingo@redhat.com, bp@alien8.de, tglx@kernel.org, bill.roberts@arm.com, hpa@zytor.com Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org On Tue, 2026-07-07 at 14:11 -0500, Bill Roberts wrote: > Test that ARCH_SHSTK_UNLOCK can't be called from normal (non-ptrace) > context. > > Signed-off-by: Bill Roberts <bill.roberts@arm.com> > --- Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com> ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK 2026-08-27 23:32 ` Edgecombe, Rick P @ 2026-09-09 18:47 ` Bill Roberts 2026-09-09 18:58 ` Edgecombe, Rick P 2026-09-09 20:25 ` Bill Roberts 1 sibling, 1 reply; 5+ messages in thread From: Bill Roberts @ 2026-09-09 18:47 UTC (permalink / raw) To: Edgecombe, Rick P, x86@kernel.org, dave.hansen@linux.intel.com, shuah@kernel.org, mingo@redhat.com, bp@alien8.de, tglx@kernel.org, hpa@zytor.com Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org On 8/27/26 6:32 PM, Edgecombe, Rick P wrote: > On Tue, 2026-07-07 at 14:11 -0500, Bill Roberts wrote: >> Test that ARCH_SHSTK_UNLOCK can't be called from normal (non-ptrace) >> context. >> >> Signed-off-by: Bill Roberts <bill.roberts@arm.com> >> --- > Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Rick/Dave, bump, any love on this patch series? Thanks. Lore links for convenience: - Re: [PATCH v2 1/2] arch/x86: handle ARCH_SHSTK_ENABLE explicitly - https://lore.kernel.org/all/d223c3e24650c3d29f162bb7faaac74ccb7bf65a.camel@intel.com/ - Re: [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK - https://lore.kernel.org/all/440cdd41a203589b31e287378de146e18e620176.camel@intel.com/ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK 2026-09-09 18:47 ` Bill Roberts @ 2026-09-09 18:58 ` Edgecombe, Rick P 0 siblings, 0 replies; 5+ messages in thread From: Edgecombe, Rick P @ 2026-09-09 18:58 UTC (permalink / raw) To: bp@alien8.de, dave.hansen@linux.intel.com, shuah@kernel.org, mingo@redhat.com, x86@kernel.org, tglx@kernel.org, bill.roberts@arm.com, hpa@zytor.com Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org On Wed, 2026-09-09 at 13:47 -0500, Bill Roberts wrote: > Rick I replied. Is there something else you need? ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK 2026-08-27 23:32 ` Edgecombe, Rick P 2026-09-09 18:47 ` Bill Roberts @ 2026-09-09 20:25 ` Bill Roberts 1 sibling, 0 replies; 5+ messages in thread From: Bill Roberts @ 2026-09-09 20:25 UTC (permalink / raw) To: Edgecombe, Rick P, x86@kernel.org, dave.hansen@linux.intel.com, shuah@kernel.org, mingo@redhat.com, bp@alien8.de, tglx@kernel.org, hpa@zytor.com Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org On 8/27/26 6:32 PM, Edgecombe, Rick P wrote: > On Tue, 2026-07-07 at 14:11 -0500, Bill Roberts wrote: >> Test that ARCH_SHSTK_UNLOCK can't be called from normal (non-ptrace) >> context. >> >> Signed-off-by: Bill Roberts <bill.roberts@arm.com> >> --- > Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Bump, I don't see these acked/staged anywhere. Links in case you need the patches handy: 1. https://lore.kernel.org/all/d223c3e24650c3d29f162bb7faaac74ccb7bf65a.camel@intel.com/ 2. https://lore.kernel.org/all/440cdd41a203589b31e287378de146e18e620176.camel@intel.com/ ^ permalink raw reply [flat|nested] 5+ messages in thread
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2026-07-07 19:11 ` [PATCH v2 2/2] selftest/x86: test ARCH_SHSTK_UNLOCK Bill Roberts
2026-08-27 23:32 ` Edgecombe, Rick P
2026-09-09 18:47 ` Bill Roberts
2026-09-09 18:58 ` Edgecombe, Rick P
2026-09-09 20:25 ` Bill Roberts
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