linux-kernel - [GIT PULL] probes: Fixes for v6.14

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Message-Id: <20250408120047.5c643902769ba724aaae8326@kernel.org>
Date: Tue, 8 Apr 2025 12:00:47 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masami Hiramatsu (Google) <mhiramat@...nel.org>, Steven Rostedt
 <rostedt@...dmis.org>, Masami Hiramatsu <mhiramat@...nel.org>,
 linux-kernel@...r.kernel.org
Subject: [GIT PULL] probes: Fixes for v6.14

Hi Linus,

Probes fixes for v6.14:

- fprobe: Fix to remove fprobe_hlist_node when module unloading

  When a fprobe target module is removed, the fprobe_hlist_node
  should be removed from the fprobe's hash table to prevent reusing
  accidentally if another module is loaded at the same address.

- fprobe: Fix to lock module while registering fprobe

　The module containing the function to be probeed is locked using a
  reference counter until the fprobe registration is complete, which
  prevents use after free.

- fprobe-events: Fix possible UAF on modules

  Basically as same as above, but in the fprobe-events layer we also
  need to get module reference counter when we find the tracepoint
  in the module.

Please pull the latest probes-fixes-v6.14 tree, which can be found at:

  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
probes-fixes-v6.14

Tag SHA1: bf8e826e269fd4454c4c7df4d4d662b99466052f
Head SHA1: a3dc2983ca7b90fd35f978502de6d4664d965cfb

Masami Hiramatsu (Google) (3):
      tracing: fprobe: Fix to lock module while registering fprobe
      tracing: fprobe events: Fix possible UAF on modules
      tracing: fprobe: Cleanup fprobe hash when module unloading

----
 kernel/trace/fprobe.c       | 170 ++++++++++++++++++++++++++++++++++++++------
 kernel/trace/trace_fprobe.c |  26 ++++---
 2 files changed, 166 insertions(+), 30 deletions(-)

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