Commit-ID: e800eb39e3f586e46a2007f72d3b609f6e3b888d
Gitweb: http://git.kernel.org/tip/e800eb39e3f586e46a2007f72d3b609f6e3b888d
Author: Andy Lutomirski <luto@xxxxxxxxxx>
AuthorDate: Wed, 29 Jul 2015 14:35:43 -0700
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Fri, 31 Jul 2015 13:31:07 +0200
selftests/x86/vm86: Fix entry_from_vm86 test on 64-bit kernels
The test failed due to an oversight on my part when run on a
64-bit kernel. vm86 isn't expected to work at all, and I
mistakenly failed one part of the test because no signal was
delivered.
Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Brian Gerst <brgerst@xxxxxxxxx>
Cc: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/502c8bef877b33fe4943885ded6125dfcc7892db.1438205722.git.luto@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
tools/testing/selftests/x86/entry_from_vm86.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/x86/entry_from_vm86.c b/tools/testing/selftests/x86/entry_from_vm86.c
index f004b2a..9a43a59 100644
--- a/tools/testing/selftests/x86/entry_from_vm86.c
+++ b/tools/testing/selftests/x86/entry_from_vm86.c
@@ -105,7 +105,8 @@ extern unsigned char vmcode[], end_vmcode[];
extern unsigned char vmcode_bound[], vmcode_sysenter[], vmcode_syscall[],
vmcode_sti[], vmcode_int3[], vmcode_int80[];
-static void do_test(struct vm86plus_struct *v86, unsigned long eip,
+/* Returns false if the test was skipped. */
+static bool do_test(struct vm86plus_struct *v86, unsigned long eip,
unsigned int rettype, unsigned int retarg,
const char *text)
{
@@ -117,7 +118,7 @@ static void do_test(struct vm86plus_struct *v86, unsigned long eip,
if (ret == -1 && errno == ENOSYS) {
printf("[SKIP]\tvm86 not supported\n");
- return;
+ return false;
}
if (VM86_TYPE(ret) == VM86_INTx) {
@@ -154,6 +155,8 @@ static void do_test(struct vm86plus_struct *v86, unsigned long eip,
printf("[FAIL]\tIncorrect return reason\n");
nerrs++;
}
+
+ return true;
}
int main(void)
@@ -219,8 +222,8 @@ int main(void)
v86.regs.ss = 0;
sethandler(SIGSEGV, sighandler, 0);
got_signal = 0;
- do_test(&v86, 0, VM86_SIGNAL, 0, "Execute null pointer");
- if (!got_signal) {
+ if (do_test(&v86, 0, VM86_SIGNAL, 0, "Execute null pointer") &&
+ !got_signal) {
printf("[FAIL]\tDid not receive SIGSEGV\n");
nerrs++;
}
--
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