linux

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Files

Daniel Borkmann 8837fe5dd0 bpf, libbpf: handle old kernels more graceful wrt global data sections

Andrii reported a corner case where e.g. global static data is present
in the BPF ELF file in form of .data/.bss/.rodata section, but without
any relocations to it. Such programs could be loaded before commit
d859900c4c ("bpf, libbpf: support global data/bss/rodata sections"),
whereas afterwards if kernel lacks support then loading would fail.

Add a probing mechanism which skips setting up libbpf internal maps
in case of missing kernel support. In presence of relocation entries,
we abort the load attempt.

Fixes: d859900c4c ("bpf, libbpf: support global data/bss/rodata sections")
Reported-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

2019-04-25 13:47:29 -07:00

api

perf tools: Fix tracing_path_mount proper path

2018-10-16 12:27:46 -03:00

bpf

bpf, libbpf: handle old kernels more graceful wrt global data sections

2019-04-25 13:47:29 -07:00

lockdep

lockdep/lib/tests: Test dynamic key registration

2019-02-28 07:55:48 +01:00

subcmd

tools lib subcmd: Don't add the kernel sources to the include path