[LTP] [PATCH] Add test for CVE 2018-1000199

[Martin Doucha]

On 26. 03. 20 7:36, Petr Vorel wrote:
> Hi Martin,
> 
>>> +TST_TEST_CONF("This test is only supported on x86 systems")
>> FYI there is TST_TEST_TCONF().
> + There needs to be semicolon after the macro (we could change this
> in the library.
>>> +#endif

I really should have tried compiling this on some other arch. *facepalm*

> I'd also put adding SAFE_PTRACE() into separate commit.
> 
> You can also use SAFE_FOPEN() for *fr.

Will fix.

> On some machines I got TBROK, but we probably cannot avoid it. 
> ptrace08.c:119: BROK: Received unexpected event from child

Hmm, could you apply the following patch and send me the output from
those machines?

diff --git a/testcases/kernel/syscalls/ptrace/ptrace08.c
b/testcases/kernel/syscalls/ptrace/ptrace08.c
index 4db433782..08ebe641a 100644
--- a/testcases/kernel/syscalls/ptrace/ptrace08.c
+++ b/testcases/kernel/syscalls/ptrace/ptrace08.c
@@ -117,6 +117,25 @@ static void run(void)
 	if (SAFE_WAITPID(child, &status, 0) != child)
 		tst_brk(TBROK, "Received event from unexpected PID");

+	if (WIFEXITED(status))
+		tst_res(TINFO, "Child exited: %d", WEXITSTATUS(status));
+
+	if (WIFSIGNALED(status))
+		tst_res(TINFO, "Child received signal: %s",
+			tst_strsig(WTERMSIG(status)));
+
+#ifdef WCOREDUMP
+	if (WCOREDUMP(status))
+		tst_res(TINFO, "Child dumped core");
+#endif
+
+	if (WIFSTOPPED(status))
+		tst_res(TINFO, "Child stopped by signal: %s",
+			tst_strsig(WTERMSIG(status)));
+
+	if (WIFCONTINUED(status))
+		tst_res(TINFO, "Child execution resumed by SIGCONT");
+
 	if (!WIFSIGNALED(status) || WTERMSIG(status) != SIGTRAP)
 		tst_brk(TBROK, "Received unexpected event from child");


-- 
Martin Doucha   mdoucha@suse.cz
QA Engineer for Software Maintenance
SUSE LINUX, s.r.o.
CORSO IIa
Krizikova 148/34
186 00 Prague 8
Czech Republic