On Sun, Oct 26, 2025 at 02:42:33PM +0530, Nirbhay Sharma wrote: > 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 <[email protected]>
Reviwed-by: Jiri Olsa <[email protected]> thanks, jirka > --- > 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 >
