linux-kernel - [GIT PULL] probes: Update for v6.18

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Message-Id: <20251003084426.f2de6028fd74e1af4e13d190@kernel.org>
Date: Fri, 3 Oct 2025 08:44:26 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masami Hiramatsu (Google) <mhiramat@...nel.org>, Menglong Dong
 <menglong8.dong@...il.com>, Thorsten Blum <thorsten.blum@...ux.dev>, Steven
 Rostedt <rostedt@...dmis.org>, Masami Hiramatsu <mhiramat@...nel.org>,
 linux-kernel@...r.kernel.org
Subject: [GIT PULL] probes: Update for v6.18

Hi Linus,

Probes for v6.18:

- fprobe: Performance enhancement of the fprobe using rhltable
  . fprobe: use rhltable for fprobe_ip_table. The fprobe IP table has
    been converted to use an rhltable for improved performance when
    dealing with a large number of probed functions.
  . Fix a suspicious RCU usage warning of the above change in the
    fprobe entry handler.
  . Remove an unused local variable of the above change.
  . Fix to initialize fprobe_ip_table in core_initcall().

- wprobe: Introduce a watchpoint probe event based on hw_breakpoint.
  . Add a new watchpoint probe that uses hardware breakpoints to
    monitor memory accesses. This allows for tracing memory reads
    and writes at specified addresses.
  . Add a basic add/remove test case for wprobe.
  . Add a syntax test case for wprobe.

- probes: Cleanup probe event subsystems.
  . uprobe/eprobe: Allocate traceprobe_parse_context per probe instead
    of each probe argument parsing. This reduce memory allocation/free
    of temporary working memory.
  . uprobes: Cleanup code using __free().
  . eprobes: Cleanup code using __free().
  . probes: Cleanup code using __free(trace_probe_log_clear) to clear
    error log automatically.
  . probes: Replace strcpy() with memcpy() in __trace_probe_log_err().


Please pull the latest probes-v6.18-2 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
probes-v6.18-2

Tag SHA1: c9699ea9d31215b01384fc3ce3a8c7cb3c8671f9
Head SHA1: 764d1ce2ccf0377dd81a0f199f267703918588da


Masami Hiramatsu (Google) (9):
      tracing: probes: Use __free() for trace_probe_log
      tracing: eprobe: Cleanup eprobe event using __free()
      tracing: uprobes: Cleanup __trace_uprobe_create() with __free()
      tracing: uprobe: eprobes: Allocate traceprobe_parse_context per probe
      tracing: fprobe: Remove unused local variable
      tracing: wprobe: Add watchpoint probe event based on hardware breakpoint
      selftests: tracing: Add a basic testcase for wprobe
      selftests: tracing: Add syntax testcase for wprobe
      tracing: fprobe: Fix to init fprobe_ip_table earlier

Menglong Dong (2):
      tracing: fprobe: use rhltable for fprobe_ip_table
      tracing: fprobe: fix suspicious rcu usage in fprobe_entry

Thorsten Blum (1):
      tracing: probes: Replace strcpy() with memcpy() in __trace_probe_log_err()

----
 Documentation/trace/index.rst                      |   1 +
 Documentation/trace/wprobetrace.rst                |  69 +++
 include/linux/fprobe.h                             |   3 +-
 include/linux/trace_events.h                       |   2 +
 kernel/trace/Kconfig                               |  13 +
 kernel/trace/Makefile                              |   1 +
 kernel/trace/fprobe.c                              | 159 +++--
 kernel/trace/trace.c                               |   9 +-
 kernel/trace/trace.h                               |   5 +
 kernel/trace/trace_eprobe.c                        | 108 ++--
 kernel/trace/trace_probe.c                         |  27 +-
 kernel/trace/trace_probe.h                         |  12 +-
 kernel/trace/trace_uprobe.c                        |  82 +--
 kernel/trace/trace_wprobe.c                        | 685 +++++++++++++++++++++
 tools/testing/selftests/ftrace/config              |   1 +
 .../ftrace/test.d/dynevent/add_remove_wprobe.tc    |  68 ++
 .../test.d/dynevent/wprobes_syntax_errors.tc       |  20 +
 17 files changed, 1076 insertions(+), 189 deletions(-)
 create mode 100644 Documentation/trace/wprobetrace.rst
 create mode 100644 kernel/trace/trace_wprobe.c
 create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_wprobe.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc
---------------------------

-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>