This is a note to let you know that I've just added the patch titled bpf: Add bpf_patch_call_args prototype to include/linux/bpf.h to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bpf-add-bpf_patch_call_args-prototype-to-include-lin.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f935cad3ca5b0b05a32561cf3c10bd685682ca31 Author: Andrii Nakryiko <andrii@xxxxxxxxxx> Date: Mon Jan 11 23:55:14 2021 -0800 bpf: Add bpf_patch_call_args prototype to include/linux/bpf.h [ Upstream commit a643bff752dcf72a07e1b2ab2f8587e4f51118be ] Add bpf_patch_call_args() prototype. This function is called from BPF verifier and only if CONFIG_BPF_JIT_ALWAYS_ON is not defined. This fixes compiler warning about missing prototype in some kernel configurations. Fixes: 1ea47e01ad6e ("bpf: add support for bpf_call to interpreter") Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx> Acked-by: Yonghong Song <yhs@xxxxxx> Link: https://lore.kernel.org/bpf/20210112075520.4103414-2-andrii@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 7aa0d8b5aaf0c..007147f643908 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -711,7 +711,10 @@ static inline void bpf_long_memcpy(void *dst, const void *src, u32 size) /* verify correctness of eBPF program */ int bpf_check(struct bpf_prog **fp, union bpf_attr *attr, union bpf_attr __user *uattr); + +#ifndef CONFIG_BPF_JIT_ALWAYS_ON void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth); +#endif /* Map specifics */ struct xdp_buff;