s390/bpf: Fix offset parameter for skb_copy_bits()

Currently the offset parameter for skb_copy_bits is changed in
sk_load_word() and sk_load_half(). Therefore it is not correct when
calling skb_copy_bits(). Fix this and use the original offset
for the function call.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/s390/net/bpf_jit.S b/arch/s390/net/bpf_jit.S
index d34b70767d5a..ede6108c0002 100644
--- a/arch/s390/net/bpf_jit.S
+++ b/arch/s390/net/bpf_jit.S
@@ -44,6 +44,7 @@ ENTRY(sk_load_word)
 
 sk_load_word_slow:
         lgr     %r9,%r2                 # save %r2
+        lgr     %r3,%r1                 # offset
         la      %r4,160(%r15)           # pointer to temp buffer
         lhi     %r5,4                   # 4 bytes
         brasl   %r14,skb_copy_bits      # get data from skb
@@ -69,6 +70,7 @@ ENTRY(sk_load_half)
 
 sk_load_half_slow:
         lgr     %r9,%r2                 # save %r2
+        lgr     %r3,%r1                 # offset
         la      %r4,162(%r15)           # pointer to temp buffer
         lhi     %r5,2                   # 2 bytes
         brasl   %r14,skb_copy_bits      # get data from skb