diff options
| author |   Daniel Borkmann <dborkman@redhat.com> | 2014-09-08 08:04:49 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-09-09 16:58:56 -0700 |
| commit | 286aad3c4014ca825c447e07e24f8929e6d266d2 (patch) | |
| tree | 50f1a085ddd7923b2b3c2764c850d0c02447d32a /arch/sparc/net | |
| parent | net: bpf: arm: address randomize and write protect JIT code (diff) | |
| download | wireguard-linux-286aad3c4014ca825c447e07e24f8929e6d266d2.tar.xz wireguard-linux-286aad3c4014ca825c447e07e24f8929e6d266d2.zip | |
net: bpf: be friendly to kmemcheck
Reported by Mikulas Patocka, kmemcheck currently barks out a
false positive since we don't have special kmemcheck annotation
for bitfields used in bpf_prog structure.
We currently have jited:1, len:31 and thus when accessing len
while CONFIG_KMEMCHECK enabled, kmemcheck throws a warning that
we're reading uninitialized memory.
As we don't need the whole bit universe for pages member, we
can just split it to u16 and use a bool flag for jited instead
of a bitfield.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/net')
| -rw-r--r-- | arch/sparc/net/bpf_jit_comp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c index f7a736b645e8..b2ad9dc5425e 100644 --- a/arch/sparc/net/bpf_jit_comp.c +++ b/arch/sparc/net/bpf_jit_comp.c @@ -801,7 +801,7 @@ cond_branch: f_offset = addrs[i + filter[i].jf]; if (image) { bpf_flush_icache(image, image + proglen); fp->bpf_func = (void *)image; - fp->jited = 1; + fp->jited = true; } out: kfree(addrs); |