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d340d28a96
Add a few testcases to make sure that it's not possible to place a kprobe in the mid of an instruction on s390. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <linux/kernel.h>
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#include <linux/kprobes.h>
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#include <linux/random.h>
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#include <kunit/test.h>
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#include "test_kprobes.h"
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static struct kprobe kp;
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static void setup_kprobe(struct kunit *test, struct kprobe *kp,
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const char *symbol, int offset)
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{
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kp->offset = offset;
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kp->addr = NULL;
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kp->symbol_name = symbol;
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}
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static void test_kprobe_offset(struct kunit *test, struct kprobe *kp,
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const char *target, int offset)
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{
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int ret;
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setup_kprobe(test, kp, target, 0);
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ret = register_kprobe(kp);
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if (!ret)
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unregister_kprobe(kp);
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KUNIT_EXPECT_EQ(test, 0, ret);
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setup_kprobe(test, kp, target, offset);
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ret = register_kprobe(kp);
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KUNIT_EXPECT_EQ(test, -EINVAL, ret);
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if (!ret)
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unregister_kprobe(kp);
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}
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static void test_kprobe_odd(struct kunit *test)
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{
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test_kprobe_offset(test, &kp, "kprobes_target_odd",
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kprobes_target_odd_offs);
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}
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static void test_kprobe_in_insn4(struct kunit *test)
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{
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test_kprobe_offset(test, &kp, "kprobes_target_in_insn4",
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kprobes_target_in_insn4_offs);
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}
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static void test_kprobe_in_insn6_lo(struct kunit *test)
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{
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test_kprobe_offset(test, &kp, "kprobes_target_in_insn6_lo",
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kprobes_target_in_insn6_lo_offs);
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}
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static void test_kprobe_in_insn6_hi(struct kunit *test)
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{
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test_kprobe_offset(test, &kp, "kprobes_target_in_insn6_hi",
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kprobes_target_in_insn6_hi_offs);
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}
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static struct kunit_case kprobes_testcases[] = {
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KUNIT_CASE(test_kprobe_odd),
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KUNIT_CASE(test_kprobe_in_insn4),
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KUNIT_CASE(test_kprobe_in_insn6_lo),
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KUNIT_CASE(test_kprobe_in_insn6_hi),
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{}
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};
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static struct kunit_suite kprobes_test_suite = {
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.name = "kprobes_test_s390",
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.test_cases = kprobes_testcases,
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};
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kunit_test_suites(&kprobes_test_suite);
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MODULE_LICENSE("GPL");
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