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Jiawei Zhao 758acb9ccf libbpf: Fix USDT SIB argument handling causing unrecognized register error

On x86-64, USDT arguments can be specified using Scale-Index-Base (SIB)
addressing, e.g. "1@-96(%rbp,%rax,8)". The current USDT implementation
in libbpf cannot parse this format, causing `bpf_program__attach_usdt()`
to fail with -ENOENT (unrecognized register).

This patch fixes this by implementing the necessary changes:
- add correct handling for SIB-addressed arguments in `bpf_usdt_arg`.
- add adaptive support to `__bpf_usdt_arg_type` and
  `__bpf_usdt_arg_spec` to represent SIB addressing parameters.

Signed-off-by: Jiawei Zhao <phoenix500526@163.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250827053128.1301287-2-phoenix500526@163.com

2025-08-27 15:44:25 -07:00

api

libapi: Add missing header with NAME_MAX define to io_dir.h

2025-03-13 00:29:36 -07:00

bpf

libbpf: Fix USDT SIB argument handling causing unrecognized register error

2025-08-27 15:44:25 -07:00

perf

perf parse-events: Support user CPUs mixed with threads/processes

2025-07-24 13:41:35 -07:00

subcmd

tools subcmd: Tighten the filename size in check_if_command_finished