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Date: Wed, 06 Apr 2022 17:20:12 +0000 From: patchwork-bot+netdevbpf@...nel.org To: Artem Savkov <asavkov@...hat.com> Cc: bpf@...r.kernel.org, ast@...nel.org, daniel@...earbox.net, andrii@...nel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH bpf-next] bpf/selftests: use bpf_num_possible_cpus() in per-cpu map allocations Hello: This patch was applied to bpf/bpf-next.git (master) by Andrii Nakryiko <andrii@...nel.org>: On Wed, 6 Apr 2022 10:54:08 +0200 you wrote: > bpf_map_value_size() uses num_possible_cpus() to determine map size, but > some of the tests only allocate enough memory for online cpus. This > results in out-of-bound writes in userspace during bpf(BPF_MAP_LOOKUP_ELEM) > syscalls in cases when number of online cpus is lower than the number of > possible cpus. Fix by switching from get_nprocs_conf() to > bpf_num_possible_cpus() when determining the number of processors in > these tests (test_progs/netcnt and test_cgroup_storage). > > [...] Here is the summary with links: - [bpf-next] bpf/selftests: use bpf_num_possible_cpus() in per-cpu map allocations https://git.kernel.org/bpf/bpf-next/c/ebaf24c589d7 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
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