[PATCH v2] selftests/seccomp: fix pointer type mismatch in UPROBE test

[Nirbhay Sharma]

Fix compilation error in UPROBE_setup caused by pointer type mismatch
in the ternary expression when compiled with -fcf-protection. The
probed_uprobe function pointer has the __attribute__((nocf_check))
attribute, which causes the conditional operator to fail when combined
with the regular probed_uretprobe function pointer:

  seccomp_bpf.c:5175:74: error: pointer type mismatch in conditional
  expression [-Wincompatible-pointer-types]

Cast both function pointers to 'const void *' to match the expected
parameter type of get_uprobe_offset(), resolving the type mismatch
while preserving the function selection logic.

This error appears with compilers that enable Control Flow Integrity
(CFI) protection via -fcf-protection, such as Clang 19.1.2 (default
on Fedora).

Signed-off-by: Nirbhay Sharma <nirbhay.lkd@xxxxxxxxx>
---
 tools/testing/selftests/seccomp/seccomp_bpf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index 874f17763536..e13ffe18ef95 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -5172,7 +5172,8 @@ FIXTURE_SETUP(UPROBE)
 		ASSERT_GE(bit, 0);
 	}
 
-	offset = get_uprobe_offset(variant->uretprobe ? probed_uretprobe : probed_uprobe);
+	offset = get_uprobe_offset(variant->uretprobe ?
+		(const void *)probed_uretprobe : (const void *)probed_uprobe);
 	ASSERT_GE(offset, 0);
 
 	if (variant->uretprobe)
-- 
2.48.1