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authorDaniel Borkmann <daniel@iogearbox.net>2018-06-28 23:34:57 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-22 15:16:08 +0200
commit1df397963a05affd16809b9b705392b56473eb0f (patch)
parentd3aaff449e24bd254db7a44e049461a127137114 (diff)
bpf, arm32: fix to use bpf_jit_binary_lock_ro api
commit 18d405af30bf6506bf2fc49056de7691c949812e upstream. Any eBPF JIT that where its underlying arch supports ARCH_HAS_SET_MEMORY would need to use bpf_jit_binary_{un,}lock_ro() pair instead of the set_memory_{ro,rw}() pair directly as otherwise changes to the former might break. arm32's eBPF conversion missed to change it, so fix this up here. Fixes: 39c13c204bb1 ("arm: eBPF JIT compiler") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index b5030e1a41d8..5539fba892ce 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -1928,7 +1928,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
/* there are 2 passes here */
bpf_jit_dump(prog->len, image_size, 2, ctx.target);
- set_memory_ro((unsigned long)header, header->pages);
+ bpf_jit_binary_lock_ro(header);
prog->bpf_func = (void *)ctx.target;
prog->jited = 1;
prog->jited_len = image_size;