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author | Alexei Starovoitov <ast@kernel.org> | 2021-07-15 03:54:15 +0300 |
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committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-07-15 23:31:10 +0300 |
commit | 7ddc80a476c2d599246028af5808d15f9e24c109 (patch) | |
tree | 18cf3ae170f0b9292698f94128dd44afd57de356 /kernel/sysctl-test.c | |
parent | bfc6bb74e4f16ab264fa73398a7a79d7d2afac2e (diff) | |
download | linux-7ddc80a476c2d599246028af5808d15f9e24c109.tar.xz |
bpf: Teach stack depth check about async callbacks.
Teach max stack depth checking algorithm about async callbacks
that don't increase bpf program stack size.
Also add sanity check that bpf_tail_call didn't sneak into async cb.
It's impossible, since PTR_TO_CTX is not available in async cb,
hence the program cannot contain bpf_tail_call(ctx,...);
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20210715005417.78572-10-alexei.starovoitov@gmail.com
Diffstat (limited to 'kernel/sysctl-test.c')
0 files changed, 0 insertions, 0 deletions