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bpf, lsm: Make BPF_LSM depend on BPF_EVENTS

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LSM and tracing programs share their helpers with bpf_tracing_func_proto
which is only defined (in bpf_trace.c) when BPF_EVENTS is enabled.

Instead of adding __weak symbol, make BPF_LSM depend on BPF_EVENTS so
that both tracing and LSM programs can actually share helpers.

Fixes: fc611f47f218 ("bpf: Introduce BPF_PROG_TYPE_LSM")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: KP Singh <kpsingh@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200330204059.13024-1-kpsingh@chromium.org
This commit is contained in:
KP Singh 2020-03-30 22:40:59 +02:00 committed by Daniel Borkmann
parent c58b1558a7
commit 4edf16b72c
1 changed files with 1 additions and 0 deletions
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init/Kconfig
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@ -1619,6 +1619,7 @@ config KALLSYMS_BASE_RELATIVE
config BPF_LSM
bool "LSM Instrumentation with BPF"
depends on BPF_EVENTS
depends on BPF_SYSCALL
depends on SECURITY
depends on BPF_JIT