Zi Shen Lim 42ff712bc0 arm64: bpf: add extra pass to handle faulty codegen ... Code generation functions in arch/arm64/kernel/insn.c previously BUG_ON invalid parameters. Following change of that behavior, now we need to handle the error case where AARCH64_BREAK_FAULT is returned. Instead of error-handling on every emit() in JIT, we add a new validation pass at the end of JIT compilation. There's no point in running JITed code at run-time only to trap due to AARCH64_BREAK_FAULT. Instead, we drop this failed JIT compilation and allow the system to gracefully fallback on the BPF interpreter. Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com> Suggested-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-01-17 19:15:26 -05:00
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bpf_jit_comp.c	arm64: bpf: add extra pass to handle faulty codegen	2016-01-17 19:15:26 -05:00
bpf_jit.h	arm64: bpf: fix div-by-zero case	2015-11-06 16:58:36 +00:00
Makefile	arm64: eBPF JIT compiler	2014-09-08 14:39:21 +01:00