hi,
there's bug in kprobe_multi link that makes cookies misplaced when
using symbols to attach. The reason is that we sort symbols by name
but not adjacent cookie values. Current test did not find it because
bpf_fentry_test* are already sorted by name.

v2 changes:
  - rebased on top of bpf/master
  - checking if cookies are defined later in swap function [Andrii]
  - added acks

thanks,
jirka


---
Jiri Olsa (3):
      selftests/bpf: Shuffle cookies symbols in kprobe multi test
      ftrace: Keep address offset in ftrace_lookup_symbols
      bpf: Force cookies array to follow symbols sorting

 kernel/trace/bpf_trace.c                            | 60 +++++++++++++++++++++++++++++++++++++++++++++---------------
 kernel/trace/ftrace.c                               | 13 +++++++++++--
 tools/testing/selftests/bpf/prog_tests/bpf_cookie.c | 78 +++++++++++++++++++++++++++++++++++++++---------------------------------------
 tools/testing/selftests/bpf/progs/kprobe_multi.c    | 24 ++++++++++++------------
 4 files changed, 107 insertions(+), 68 deletions(-)