aboutsummaryrefslogtreecommitdiff
path: root/arch/s390/net
diff options
context:
space:
mode:
authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2015-01-08 14:46:18 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-01-09 10:10:32 +0100
commitae750974591bb9431b1f84b1323dc2fb7d8fe360 (patch)
tree4011215959e287ebd82bedc3141f312cfbf55c37 /arch/s390/net
parentdf3eed3d282f2fe1ffb73d3545fcde4e9b80a0d3 (diff)
downloadlinux-ae750974591bb9431b1f84b1323dc2fb7d8fe360.tar.gz
s390/bpf: Fix JMP_JGE_X (A > X) and JMP_JGT_X (A >= X)
Currently the signed COMPARE (cr) instruction is used to compare "A" with "X". This is not correct because "A" and "X" are both unsigned. To fix this use the unsigned COMPARE LOGICAL (clr) instruction instead. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/net')
-rw-r--r--arch/s390/net/bpf_jit_comp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index 8bc474fb52fd..524496d47ef5 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -502,8 +502,8 @@ branch: if (filter->jt == filter->jf) {
xbranch: /* Emit compare if the branch targets are different */
if (filter->jt != filter->jf) {
jit->seen |= SEEN_XREG;
- /* cr %r5,%r12 */
- EMIT2(0x195c);
+ /* clr %r5,%r12 */
+ EMIT2(0x155c);
}
goto branch;
case BPF_JMP | BPF_JSET | BPF_X: /* ip += (A & X) ? jt : jf */