bpf: Fix bpf jit kallsym access
Jiri reported crash when JIT is on, but net.core.bpf_jit_kallsyms is off. bpf_prog_kallsyms_find() was skipping addr->bpf_prog resolution logic in oops and stack traces. That's incorrect. It should only skip addr->name resolution for 'cat /proc/kallsyms'. That's what bpf_jit_kallsyms and bpf_jit_harden protect. Fixes: 3dec541b ("bpf: Add support for BTF pointers to x86 JIT") Reported-by:Jiri Olsa <jolsa@redhat.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20191030233019.1187404-1-ast@kernel.org
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