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Message-ID: <555FBBB9.2070509@plumgrid.com> Date: Fri, 22 May 2015 16:28:57 -0700 From: Alexei Starovoitov <ast@...mgrid.com> To: Daniel Borkmann <daniel@...earbox.net>, davem@...emloft.net CC: edumazet@...gle.com, netdev@...r.kernel.org Subject: Re: [PATCH net-next] test_bpf: add more eBPF jump torture cases On 5/22/15 4:10 PM, Daniel Borkmann wrote: > Add two more eBPF test cases for JITs, i.e. the second one revealed a > bug in the x86_64 JIT compiler, where only an int3 filled image from > the allocator was emitted and later wrongly set by the compiler as the > bpf_func program code since optimization pass boundary was surpassed > w/o actually emitting opcodes. > > Interpreter: > > [ 45.782892] test_bpf: #242 BPF_MAXINSNS: Very long jump backwards jited:0 11 PASS > [ 45.783062] test_bpf: #243 BPF_MAXINSNS: Edge hopping nuthouse jited:0 14705 PASS > > After x86_64 JIT (fixed): > > [ 80.495638] test_bpf: #242 BPF_MAXINSNS: Very long jump backwards jited:1 6 PASS > [ 80.495957] test_bpf: #243 BPF_MAXINSNS: Edge hopping nuthouse jited:1 17157 PASS > > Reference: http://thread.gmane.org/gmane.linux.network/364729 > Signed-off-by: Daniel Borkmann <daniel@...earbox.net> Thanks a lot for great tests! Acked-by: Alexei Starovoitov <ast@...mgrid.com> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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