diff mbox series

[bpf] libbpf: fix u64-to-pointer cast on 32-bit arches

Message ID 20240319215143.1279312-1-andrii@kernel.org (mailing list archive)
State Accepted
Commit 5ab8cb89dbb6f3e111c8b0a9a86496da23c94439
Delegated to: BPF
Headers show
Series [bpf] libbpf: fix u64-to-pointer cast on 32-bit arches | expand

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netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
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bpf/vmtest-bpf-VM_Test-23 success Logs for x86_64-gcc / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on x86_64 with gcc
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Commit Message

Andrii Nakryiko March 19, 2024, 9:51 p.m. UTC 
It's been reported that (void *)map->map_extra is causing compilation
warnings on 32-bit architectures. It's easy enough to fix this by
casting to long first.

Fixes: 79ff13e99169 ("libbpf: Add support for bpf_arena.")
Reported-by: Ryan Eatmon <reatmon@ti.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
 tools/lib/bpf/libbpf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

patchwork-bot+netdevbpf@kernel.org March 20, 2024, 6 a.m. UTC | #1 
Hello:

This patch was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Tue, 19 Mar 2024 14:51:43 -0700 you wrote:
> It's been reported that (void *)map->map_extra is causing compilation
> warnings on 32-bit architectures. It's easy enough to fix this by
> casting to long first.
> 
> Fixes: 79ff13e99169 ("libbpf: Add support for bpf_arena.")
> Reported-by: Ryan Eatmon <reatmon@ti.com>
> Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
> 
> [...]

Here is the summary with links:
  - [bpf] libbpf: fix u64-to-pointer cast on 32-bit arches
    https://git.kernel.org/bpf/bpf/c/5ab8cb89dbb6

You are awesome, thank you!
diff mbox series

Patch

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 3a756d61c120..37c27be2449c 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -5366,8 +5366,8 @@  bpf_object__create_maps(struct bpf_object *obj)
 					goto err_out;
 			}
 			if (map->def.type == BPF_MAP_TYPE_ARENA) {
-				map->mmaped = mmap((void *)map->map_extra, bpf_map_mmap_sz(map),
-						   PROT_READ | PROT_WRITE,
+				map->mmaped = mmap((void *)(long)map->map_extra,
+						   bpf_map_mmap_sz(map), PROT_READ | PROT_WRITE,
 						   map->map_extra ? MAP_SHARED | MAP_FIXED : MAP_SHARED,
 						   map->fd, 0);
 				if (map->mmaped == MAP_FAILED) {