[RFC PATCH v4 0/4] Faultable syscall tracepoints updates

[Mathieu Desnoyers <mathieu.desnoyers@efficios.com>]

This series addresses use-after-free of faultable syscall tracepoints
reported by test bots using Syzkaller.

This applies on linux-next 20241022.

Thanks,

Mathieu

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Michael Jeanson <mjeanson@efficios.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Yonghong Song <yhs@fb.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: bpf@vger.kernel.org
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Jordan Rife <jrife@google.com>

Mathieu Desnoyers (4):
  tracing: Introduce tracepoint extended structure
  tracing: Introduce tracepoint_is_faultable()
  tracing: Fix syscall tracepoint use-after-free
  tracing: Add might_fault() check in __DO_TRACE() for syscall

 include/linux/tracepoint-defs.h | 10 +++++--
 include/linux/tracepoint.h      | 49 +++++++++++++++++++++++++++------
 include/trace/define_trace.h    |  2 +-
 kernel/tracepoint.c             | 20 ++++++++------
 4 files changed, 61 insertions(+), 20 deletions(-)

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2.39.5