bpf: Remove prealloc-only restriction for sleepable bpf programs.

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Since hash map is now converted to bpf_mem_alloc and it's waiting for rcu and
rcu_tasks_trace GPs before freeing elements into global memory slabs it's safe
to use dynamically allocated hash maps in sleepable bpf programs.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220902211058.60789-15-alexei.starovoitov@gmail.com

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Alexei Starovoitov 2022-09-02 14:10:56 -07:00 • committed by Daniel Borkmann

parent dccb4a9013

commit 02cc5aa29e

1 changed files with 0 additions and 23 deletions

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kernel/bpf/verifier.c

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