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authorDaniel Borkmann <daniel@iogearbox.net>2017-01-07 02:26:33 +0300
committerDavid S. Miller <davem@davemloft.net>2017-01-09 01:00:18 +0300
commit9d5ecb09d525469abd1a10c096cb5a17206523f2 (patch)
tree6596162007a93575bf50a08acb35a68ab7a5ba82 /arch/x86/net
parentf5992b72ebe0dde488fa8f706b887194020c66fc (diff)
downloadlinux-9d5ecb09d525469abd1a10c096cb5a17206523f2.tar.xz
bpf: change back to orig prog on too many passes
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>
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 e76d1af60f7a..bb660e53cbd6 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: