From e08ccdeb4ff6cac31c0e06d208be5bb489ca179a Mon Sep 17 00:00:00 2001 From: Eric Long Date: Sat, 8 Mar 2025 16:28:02 +0800 Forwarded: not-needed Subject: [PATCH] cli/run: allow unaligned memory access in BPF The verifier will panic when checking Mimic in kernels without CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y. This is mostly due to reading of TCP options, which in most cases should align and not causing major performance problems. --- src/run.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/run.c b/src/run.c index 57cd5a7..7835a1c 100644 --- a/src/run.c +++ b/src/run.c @@ -557,6 +557,9 @@ static inline int run_bpf(struct run_args* args, int lock_fd, const char* ifname skel->bss->log_verbosity = log_verbosity; skel->bss->link_type = args->link_type; + bpf_program__set_flags(skel->progs.ingress_handler, BPF_F_ANY_ALIGNMENT); + bpf_program__set_flags(skel->progs.egress_handler, BPF_F_ANY_ALIGNMENT); + // XDP #ifdef MIMIC_USE_LIBXDP if (args->use_libxdp) { -- 2.48.1