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 <nam...@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
--
2.39.5
