On Tue, Oct 26, 2021 at 12:19:36PM -0700, Martin KaFai Lau wrote:

On Thu, Oct 21, 2021 at 08:46:10AM -1000, Tejun Heo wrote:

quoted

bpf_types.h has BPF_MAP_TYPE_INODE_STORAGE and BPF_MAP_TYPE_TASK_STORAGE
declared inside #ifdef CONFIG_NET although they are built regardless of
CONFIG_NET. So, when CONFIG_BPF_SYSCALL && !CONFIG_NET, they are built
without the declarations leading to spurious build failures and not
registered to bpf_map_types making them unavailable.

Fix it by moving the BPF_MAP_TYPE for the two map types outside of
CONFIG_NET.

Acked-by: Martin KaFai Lau <redacted>

btw, this should be the fix tag that has both task and inode storage.
Fixes: a10787e6d58c ("bpf: Enable task local storage for tracing programs")