From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
<daniel@iogearbox.net>
Cc: <andrii@kernel.org>, <kernel-team@fb.com>,
Hao Luo <haoluo@google.com>, kernel test robot <lkp@intel.com>
Subject: [PATCH v2 bpf-next 2/7] bpf: avoid warning when re-casting __bpf_call_base into __bpf_call_base_args
Date: Fri, 8 Jan 2021 14:09:25 -0800 [thread overview]
Message-ID: <20210108220930.482456-3-andrii@kernel.org> (raw)
In-Reply-To: <20210108220930.482456-1-andrii@kernel.org>
BPF interpreter uses extra input argument, so re-casts __bpf_call_base into
__bpf_call_base_args. Avoid compiler warning about incompatible function
prototypes by casting to void * first.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 1ea47e01ad6e ("bpf: add support for bpf_call to interpreter")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
include/linux/filter.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 29c27656165b..5edf2b660881 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -886,7 +886,7 @@ void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp);
u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
#define __bpf_call_base_args \
((u64 (*)(u64, u64, u64, u64, u64, const struct bpf_insn *)) \
- __bpf_call_base)
+ (void *)__bpf_call_base)
struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog);
void bpf_jit_compile(struct bpf_prog *prog);
--
2.24.1
next prev parent reply other threads:[~2021-01-08 22:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-08 22:09 [PATCH v2 bpf-next 0/7] Support kernel module ksym variables Andrii Nakryiko
2021-01-08 22:09 ` [PATCH v2 bpf-next 1/7] bpf: add bpf_patch_call_args prototype to include/linux/bpf.h Andrii Nakryiko
2021-01-11 4:02 ` Yonghong Song
2021-01-08 22:09 ` Andrii Nakryiko [this message]
2021-01-11 4:03 ` [PATCH v2 bpf-next 2/7] bpf: avoid warning when re-casting __bpf_call_base into __bpf_call_base_args Yonghong Song
2021-01-08 22:09 ` [PATCH v2 bpf-next 3/7] bpf: declare __bpf_free_used_maps() unconditionally Andrii Nakryiko
2021-01-11 4:03 ` Yonghong Song
2021-01-08 22:09 ` [PATCH v2 bpf-next 4/7] selftests/bpf: sync RCU before unloading bpf_testmod Andrii Nakryiko
2021-01-11 4:05 ` Yonghong Song
2021-01-11 18:59 ` Hao Luo
2021-01-08 22:09 ` [PATCH v2 bpf-next 5/7] bpf: support BPF ksym variables in kernel modules Andrii Nakryiko
2021-01-11 4:13 ` Yonghong Song
2021-01-11 21:29 ` Andrii Nakryiko
2021-01-12 1:25 ` Yonghong Song
2021-01-11 18:59 ` Hao Luo
2021-01-11 21:31 ` Andrii Nakryiko
2021-01-08 22:09 ` [PATCH v2 bpf-next 6/7] libbpf: support kernel module ksym externs Andrii Nakryiko
2021-01-11 4:15 ` Yonghong Song
2021-01-11 21:37 ` Andrii Nakryiko
2021-01-12 1:34 ` Yonghong Song
2021-01-12 6:45 ` Andrii Nakryiko
2021-01-11 19:00 ` Hao Luo
2021-01-11 21:39 ` Andrii Nakryiko
2021-01-08 22:09 ` [PATCH v2 bpf-next 7/7] selftests/bpf: test " Andrii Nakryiko
2021-01-11 4:18 ` Yonghong Song
2021-01-11 21:40 ` Andrii Nakryiko
2021-01-11 19:00 ` Hao Luo
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