Daniel Borkmann 87338c8e2c bpf, ppc64: do not reload skb pointers in non-skb context ... The assumption of unconditionally reloading skb pointers on BPF helper calls where bpf_helper_changes_pkt_data() holds true is wrong. There can be different contexts where the helper would enforce a reload such as in case of XDP. Here, we do have a struct xdp_buff instead of struct sk_buff as context, thus this will access garbage. JITs only ever need to deal with cached skb pointer reload when ld_abs/ind was seen, therefore guard the reload behind SEEN_SKB. Fixes: 156d0e290e ("powerpc/ebpf/jit: Implement JIT compiler for extended BPF") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Tested-by: Sandipan Das <sandipan@linux.vnet.ibm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2017-12-15 09:19:35 -08:00
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Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
bpf_jit.h	bpf, ppc64: implement jiting of BPF_J{LT, LE, SLT, SLE}	2017-08-09 16:53:57 -07:00
bpf_jit32.h	powerpc/bpf/jit: Isolate classic BPF JIT specifics into a separate header	2016-06-24 15:15:51 +10:00
bpf_jit64.h	bpf: take advantage of stack_depth tracking in powerpc JIT	2017-11-06 16:48:16 +11:00
bpf_jit_asm.S	powerpc/bpf/jit: Isolate classic BPF JIT specifics into a separate header	2016-06-24 15:15:51 +10:00
bpf_jit_asm64.S	powerpc/ebpf/jit: Implement JIT compiler for extended BPF	2016-06-24 15:17:57 +10:00
bpf_jit_comp.c	powerpc/bpf: Remove redundant check for non-null image	2017-01-25 13:34:24 +11:00
bpf_jit_comp64.c	bpf, ppc64: do not reload skb pointers in non-skb context	2017-12-15 09:19:35 -08:00