[GIT PULL] probes: Updates for v7.2

[Google]

Hi Linus,

Probes updates for v7.2

- eprobes: BTF support for dereferencing pointers
  . tracing/eprobes: Allow use of BTF names to dereference pointers. Add syntax
    to the parsing of eprobes to typecast structure pointer trace event fields,
    enabling BTF-based dereferencing instead of relying on manual offsets.

- probes: Improvements and robustness enhancements
  . tracing: Use flexible array for entry fetch code. Store probe entry fetch
    instructions in the probe_entry_arg allocation via a flexible array
    member to simplify memory allocation and lifetime management.
  . tracing: Replace BUG_ON with lockdep_assert_held in uprobe_buffer functions.
    Replace BUG_ON() calls with lockdep_assert_held() in uprobe buffer
    enable/disable paths to prevent kernel crashes and better verify lock ownership.
  . tracing/probes: Ensure the uprobe buffer size is bigger than event size.
    Add a BUILD_BUG_ON() assertion to guarantee that the per-CPU uprobe
    working buffer size is always larger than the maximum probe event size.


Please pull the latest probes-v7.2 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
probes-v7.2

Tag SHA1: ccffe554d710dba03357fc8d0c1f76ffc9d38f5b
Head SHA1: 69efd863a78584b9416ed6be0e1e7349124b4a00


Masami Hiramatsu (Google) (1):
      tracing/probes: Ensure the uprobe buffer size is bigger than event size

Rosen Penev (1):
      tracing: Use flexible array for entry fetch code

Steven Rostedt (1):
      tracing/eprobes: Allow use of BTF names to dereference pointers

Yash Suthar (1):
      tracing: Replace BUG_ON with lockdep_assert_held in uprobe_buffer functions

----
 Documentation/trace/eprobetrace.rst |   4 +
 kernel/trace/trace_probe.c          | 181 +++++++++++++++++++++++++++++-------
 kernel/trace/trace_probe.h          |   7 +-
 kernel/trace/trace_uprobe.c         |   5 +-
 4 files changed, 159 insertions(+), 38 deletions(-)

-- 
Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>