Michael Holzheu 0fa963553a s390/bpf: reduce maximum program size to 64 KB ... The s390 BFP compiler currently uses relative branch instructions that only support jumps up to 64 KB. Examples are "j", "jnz", "cgrj", etc. Currently the maximum size of s390 BPF programs is set to 0x7ffff. If branches over 64 KB are generated the, kernel can crash due to incorrect code. So fix this an reduce the maximum size to 64 KB. Programs larger than that will be interpreted. Fixes: ce2b6ad9c1 ("s390/bpf: increase BPF_SIZE_MAX") Cc: stable@vger.kernel.org # 4.3+ Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2016-05-19 09:14:27 +02:00
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bpf_jit.h	s390/bpf: recache skb->data/hlen for skb_vlan_push/pop	2015-07-29 14:59:58 -07:00
bpf_jit.S	s390/bpf: Add s390x eBPF JIT compiler backend	2015-04-15 12:23:49 +02:00
bpf_jit_comp.c	s390/bpf: reduce maximum program size to 64 KB	2016-05-19 09:14:27 +02:00
Makefile	s390/bpf,jit: BPF Just In Time compiler for s390	2012-09-26 15:44:49 +02:00