hi, sending fix for ORC stack unwind issue reported in here [1], where the ORC unwinder won't go pass the return_to_handler function and we get no stacktrace.
Sending fix for that together with unrelated stacktrace fix (patch 1), so the attached test can work properly. It's based on: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git probes/for-next v1: https://lore.kernel.org/bpf/[email protected]/ v2: https://lore.kernel.org/bpf/[email protected]/ v3 changes: - fix assert condition in test thanks, jirka [1] https://lore.kernel.org/bpf/aObSyt3qOnS_BMcy@krava/ --- Jiri Olsa (4): Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()" x86/fgraph,bpf: Fix stack ORC unwind from kprobe_multi return probe selftests/bpf: Add stacktrace ips test for kprobe_multi/kretprobe_multi selftests/bpf: Add stacktrace ips test for raw_tp arch/x86/events/core.c | 10 +++---- arch/x86/include/asm/ftrace.h | 5 ++++ arch/x86/kernel/ftrace_64.S | 8 +++++- include/linux/ftrace.h | 10 ++++++- tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c | 150 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/testing/selftests/bpf/progs/stacktrace_ips.c | 49 +++++++++++++++++++++++++++++++ tools/testing/selftests/bpf/test_kmods/bpf_testmod.c | 26 +++++++++++++++++ 7 files changed, 251 insertions(+), 7 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c create mode 100644 tools/testing/selftests/bpf/progs/stacktrace_ips.c
