From: Martin KaFai Lau <ka...@fb.com>
Date: Mon, 16 Jan 2017 22:17:29 -0800
> test_lru_sanity5() fails when the number of online cpus
> is fewer than the number of possible cpus. It can be
> reproduced with qemu by using cmd args "--smp cpus=2,maxcpus=8".
>
> The problem is the loop in test_lru_sanity5() is testing
> 'i' which is incorrect.
>
> This patch:
> 1. Make sched_next_online() always return -1 if it cannot
> find a next cpu to schedule the process.
> 2. In test_lru_sanity5(), the parent process does
> sched_setaffinity() first (through sched_next_online())
> and the forked process will inherit it according to
> the 'man sched_setaffinity'.
>
> Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab")
> Reported-by: Daniel Borkmann <dan...@iogearbox.net>
> Signed-off-by: Martin KaFai Lau <ka...@fb.com>
Applied, thanks.
