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authorDaniel Borkmann <daniel@iogearbox.net>2017-01-07 00:26:33 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-15 13:42:54 +0100
commitb55f6ca7380d609a40e0441d345404d100da3d45 (patch)
treed0d5637cba3ecc4c8c7430cadf55ff4b6e22cc29 /arch/x86/net
parenta4d205a595217a45450ad402cbc5326c37dc0359 (diff)
bpf: change back to orig prog on too many passes
[ Upstream commit 9d5ecb09d525469abd1a10c096cb5a17206523f2 ] 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: 959a75791603 ("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>
Diffstat (limited to 'arch/x86/net')
-rw-r--r--arch/x86/net/bpf_jit_comp.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index fe04a04dab8e..15f743615923 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -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: