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bpf: change back to orig prog on too many passes

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[ Upstream commit 9d5ecb09d5 ]

If after too many passes still no image could be emitted, then
swap back to the original program as we do in all other cases
and don't use the one with blinding.

Fixes: 959a757916 ("bpf, x86: add support for constant blinding")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daniel Borkmann
2017-01-07 00:26:33 +01:00
committed by Greg Kroah-Hartman
parent a4d205a595
commit b55f6ca738
1 changed files with 2 additions and 0 deletions
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2
arch/x86/net/bpf_jit_comp.c
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@@ -1172,6 +1172,8 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
set_memory_ro((unsigned long)header, header->pages);
prog->bpf_func = (void *)image;
prog->jited = 1;
} else {
prog = orig_prog;
}
out_addrs: