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46 lines
1.4 KiB
46 lines
1.4 KiB
From ce845e0a25d77c8cf0fae539d4596b83e65e3e70 Mon Sep 17 00:00:00 2001
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From: Steve Muckle <smuckle@google.com>
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Date: Tue, 24 Oct 2017 14:41:07 -0700
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Subject: [PATCH] seccomp: detect compat mode in ARM64
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Compat mode on ARM64 reports syscall numbering differently.
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Test: run vts-kernel -m VtsKernelLinuxKselftestStaging
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Bug: 33027081
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Change-Id: Ifc02bb48573b4a40f1857b41a7735a6e3d7a06e8
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Signed-off-by: Steve Muckle <smuckle@google.com>
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---
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tools/testing/selftests/seccomp/seccomp_bpf.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
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index 2c81f4b9965d..1975e7d42e37 100644
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--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
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+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
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@@ -2295,6 +2295,7 @@ TEST(syscall_restart)
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};
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#if defined(__arm__)
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struct utsname utsbuf;
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+ int arm_version;
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#endif
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ASSERT_EQ(0, pipe(pipefd));
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@@ -2404,12 +2405,12 @@ TEST(syscall_restart)
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ret = get_syscall(_metadata, child_pid);
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#if defined(__arm__)
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/*
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- * FIXME:
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* - native ARM registers do NOT expose true syscall.
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* - compat ARM registers on ARM64 DO expose true syscall.
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*/
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ASSERT_EQ(0, uname(&utsbuf));
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- if (strncmp(utsbuf.machine, "arm", 3) == 0) {
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+ if (sscanf(utsbuf.machine, "armv%d", &arm_version) == 1 &&
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+ arm_version < 8) {
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EXPECT_EQ(__NR_nanosleep, ret);
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} else
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#endif
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--
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2.16.0.rc1.238.g530d649a79-goog
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