test_kprobes: Fix implicit declaration error of test_kprobes

commit 63a4dc0a0bb0e9bfeb2c88ccda81abdde4cdd6b8 upstream.

If KPROBES_SANITY_TEST and ARCH_CORRECT_STACKTRACE_ON_KRETPROBE is enabled, but
STACKTRACE is not set. Build failed as below:

lib/test_kprobes.c: In function ‘stacktrace_return_handler’:
lib/test_kprobes.c:228:8: error: implicit declaration of function ‘stack_trace_save’; did you mean ‘stacktrace_driver’? [-Werror=implicit-function-declaration]
  ret = stack_trace_save(stack_buf, STACK_BUF_SIZE, 0);
        ^~~~~~~~~~~~~~~~
        stacktrace_driver
cc1: all warnings being treated as errors
scripts/Makefile.build:250: recipe for target 'lib/test_kprobes.o' failed
make[2]: *** [lib/test_kprobes.o] Error 1

To fix this error, Select STACKTRACE if ARCH_CORRECT_STACKTRACE_ON_KRETPROBE is enabled.

Link: https://lore.kernel.org/all/20221121030620.63181-1-hucool.lihua@huawei.com/
Fixes: 1f6d3a8f5e39 ("kprobes: Add a test case for stacktrace from kretprobe handler")
Cc: stable@vger.kernel.org
Signed-off-by: Li Hua <hucool.lihua@huawei.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 3638b34..12dfe66 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2092,6 +2092,7 @@ config TEST_MIN_HEAP
 config TEST_SORT
        tristate "Array-based sort test" if !KUNIT_ALL_TESTS
        depends on KUNIT
+       select STACKTRACE if ARCH_CORRECT_STACKTRACE_ON_KRETPROBE
        default KUNIT_ALL_TESTS
        help
          This option enables the self-test function of 'sort()' at boot,