Greetings!!!
I’m seeing a CLANG-BPF build failure in tools/testing/selftests/bpf
related to conflicting prototypes of bpf_arena_* helpers between
vmlinux.h and bpf_arena_common.h, on mainline kernel.
Error log:
In file included from progs/arena_strsearch.c:12:
In file included from
tools/testing/selftests/bpf/bpf_arena_strsearch.h:4:
tools/testing/selftests/bpf/bpf_arena_common.h:47:15:
error: conflicting types for 'bpf_arena_alloc_pages'
void __arena* bpf_arena_alloc_pages(void *map,
void __arena *addr,
__u32 page_cnt,
__u32 node_id,
__u64 flags);
tools/testing/selftests/bpf/tools/include/vmlinux.h:135295:14:
note: previous declaration is here
extern void *bpf_arena_alloc_pages(void *p__map,
void *addr__ign,
u32 page_cnt,
int node_id,
u64 flags) __weak __ksym;
tools/testing/selftests/bpf/bpf_arena_common.h:49:5:
error: conflicting types for 'bpf_arena_reserve_pages'
int bpf_arena_reserve_pages(void *map,
void __arena *addr,
__u32 page_cnt) __ksym __weak;
tools/testing/selftests/bpf/tools/include/vmlinux.h:135297:12:
note: previous declaration is here
extern int bpf_arena_reserve_pages(void *p__map,
void *ptr__ign,
u32 page_cnt) __weak __ksym;
tools/testing/selftests/bpf/bpf_arena_common.h:50:6:
error: conflicting types for 'bpf_arena_free_pages'
void bpf_arena_free_pages(void *map,
void __arena *ptr,
__u32 page_cnt) __ksym __weak;
tools/testing/selftests/bpf/tools/include/vmlinux.h:135296:13:
note: previous declaration is here
extern void bpf_arena_free_pages(void *p__map,
void *ptr__ign,
u32 page_cnt) __weak __ksym;
Tool chain Versions:
gcc (GCC) 14.2.0
# clang --version
clang version 23.0.0git (https://github.com/llvm/llvm-project.git
bd6bfba3e50343c112a04b639394ab85be17c29b)
# llc --version
LLVM (http://llvm.org/):
LLVM version 23.0.0git
Optimized build.
Default target: powerpc64le-unknown-linux-gnu
Host CPU: (unknown)
Registered Targets:
bpf - BPF (host endian)
bpfeb - BPF (big endian)
bpfel - BPF (little endian)
ppc32 - PowerPC 32
ppc32le - PowerPC 32 LE
ppc64 - PowerPC 64
ppc64le - PowerPC 64 LE
# objcopy --version | head -1
GNU objcopy version 2.35.2-67.el9_7.1
# ld --version | head -1
GNU ld version 2.35.2-67.el9_7.1
If you happen to fix this, please add below tag.
Reported-by: Venkat Rao Bagalkote <[email protected]>
Regards,
Venkat.
