From: Dmitry V. Levin <ldv@altlinux.org>
Date: Sat, 18 Feb 2017 09:58:52 +0000 (+0000)
Subject: tests: check decoding of sched_[gs]etattr corner cases
X-Git-Tag: v4.17~202
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f31755fda2015cbb1aa0686e257118169f102031;p=strace

tests: check decoding of sched_[gs]etattr corner cases

* tests/sched_xetattr.c (main): Check that integer arguments
of sched_getattr and sched_setattr syscalls are decoded properly
by adding a few cases with filled higher 32 bits.
Check that pointer argument is decoded properly
on F8ILL_KULONG_SUPPORTED architectures.
---

diff --git a/tests/sched_xetattr.c b/tests/sched_xetattr.c
index 1826480b..f3d2b377 100644
--- a/tests/sched_xetattr.c
+++ b/tests/sched_xetattr.c
@@ -70,6 +70,12 @@ main(void)
 	struct sched_attr *const attr = tail_alloc(sizeof(*attr));
 	void *const efault = attr + 1;
 
+	sys_sched_getattr(0, 0, 0, 0);
+	printf("sched_getattr(0, NULL, 0, 0) = %s\n", errstr);
+
+	sys_sched_getattr(0, (unsigned long) attr, 0, 0);
+	printf("sched_getattr(0, %p, 0, 0) = %s\n", attr, errstr);
+
 	sys_sched_getattr(bogus_pid, 0, 0, 0);
 	printf("sched_getattr(%d, NULL, 0, 0) = %s\n", (int) bogus_pid, errstr);
 
@@ -96,6 +102,24 @@ main(void)
 	       attr->sched_period,
 	       (unsigned) sizeof(*attr));
 
+	sys_sched_getattr(F8ILL_KULONG_MASK, (unsigned long) attr,
+			  F8ILL_KULONG_MASK | sizeof(*attr), F8ILL_KULONG_MASK);
+	printf("sched_getattr(0, {size=%u, sched_policy=", attr->size);
+	printxval(schedulers, attr->sched_policy, NULL);
+	printf(", sched_flags=%s, sched_nice=%d, sched_priority=%u"
+	       ", sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64
+	       ", sched_period=%" PRIu64 "}, %u, 0) = 0\n",
+	       attr->sched_flags ? "SCHED_FLAG_RESET_ON_FORK" : "0",
+	       attr->sched_nice,
+	       attr->sched_priority,
+	       attr->sched_runtime,
+	       attr->sched_deadline,
+	       attr->sched_period,
+	       (unsigned) sizeof(*attr));
+
+	sys_sched_setattr(bogus_pid, 0, 0);
+	printf("sched_setattr(%d, NULL, 0) = %s\n", (int) bogus_pid, errstr);
+
 	attr->sched_flags |= 1;
 
 	if (sys_sched_setattr(0, (unsigned long) attr, 0))
@@ -112,6 +136,20 @@ main(void)
 	       attr->sched_deadline,
 	       attr->sched_period);
 
+	sys_sched_setattr(F8ILL_KULONG_MASK, (unsigned long) attr,
+			  F8ILL_KULONG_MASK);
+	printf("sched_setattr(0, {size=%u, sched_policy=", attr->size);
+	printxval(schedulers, attr->sched_policy, NULL);
+	printf(", sched_flags=%s, sched_nice=%d, sched_priority=%u"
+	       ", sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64
+	       ", sched_period=%" PRIu64 "}, 0) = 0\n",
+	       "SCHED_FLAG_RESET_ON_FORK",
+	       attr->sched_nice,
+	       attr->sched_priority,
+	       attr->sched_runtime,
+	       attr->sched_deadline,
+	       attr->sched_period);
+
 	attr->size = 0x90807060;
 	attr->sched_policy = 0xca7faced;
 	attr->sched_flags = 0xbadc0ded1057da7aULL;
@@ -138,6 +176,19 @@ main(void)
 	       attr->sched_period,
 	       (unsigned) bogus_flags, errstr);
 
+	if (F8ILL_KULONG_SUPPORTED) {
+		const kernel_ulong_t ill = f8ill_ptr_to_kulong(attr);
+
+		sys_sched_getattr(0, ill, sizeof(*attr), 0);
+		printf("sched_getattr(0, %#llx, %u, 0) = %s\n",
+		       (unsigned long long) ill, (unsigned) sizeof(*attr),
+		       errstr);
+
+		sys_sched_setattr(0, ill, 0);
+		printf("sched_setattr(0, %#llx, 0) = %s\n",
+		       (unsigned long long) ill, errstr);
+	}
+
 	puts("+++ exited with 0 +++");
 	return 0;
 }