The buffer pointer "line" is not initialized. This pointer is passed to getline().
It can still work if the stack is zero-initialized, because getline() can work with a NULL pointer as buffer.
But this is obviously broken. This bug shows up while running the test on a riscv64 machine.
Fix it by properly initializing the pointer.
Fixes: 15858da53542 ("selftests: coredump: Add stackdump test") Signed-off-by: Nam Cao namcao@linutronix.de --- tools/testing/selftests/coredump/stackdump_test.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/coredump/stackdump_test.c b/tools/testing/selftests/coredump/stackdump_test.c index 137b2364a082..1dc54e128586 100644 --- a/tools/testing/selftests/coredump/stackdump_test.c +++ b/tools/testing/selftests/coredump/stackdump_test.c @@ -100,6 +100,8 @@ TEST_F(coredump, stackdump) FILE *file; pid_t pid;
+ line = NULL; + /* * Step 1: Setup core_pattern so that the stackdump script is executed when the child * process crashes