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
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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	2018-12-18 12:23:56 -03:00
symbol	tools lib symbols: Introduce kallsyms__is_function()	2018-04-26 13:47:14 -03:00
traceevent	tools lib traceevent: Fix buffer overflow in arg_eval	2019-02-28 16:06:47 -03:00
bitmap.c	tools lib: Add bitmap_and function	2016-08-02 16:33:27 -03:00
find_bit.c	lib: optimize cpumask_next_and()	2018-02-06 18:32:44 -08:00
hweight.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
rbtree.c	tools: Update rbtree implementation	2019-01-25 15:12:09 +01:00
str_error_r.c	objtool, perf: Fix GCC 8 -Wrestrict error	2018-03-19 13:51:54 -03:00
string.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vsprintf.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00