bpf: Allow bpf_for/bpf_repeat while holding spin #8306
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Add the bpf_iter_num_* kfuncs called by bpf_for in special_kfunc_list, and allow the calls even while holding a spin lock. Signed-off-by: Emil Tsalapatis (Meta) <emil@etsalapatis.com> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Add a selftest to ensure BPF for loops within critical sections are accepted by the verifier. Signed-off-by: Emil Tsalapatis (Meta) <emil@etsalapatis.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com>
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Pull request for series with
subject: bpf: Allow bpf_for/bpf_repeat while holding spin
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=921699