diff options
| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2024-10-09 03:07:16 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-10-09 23:09:36 +0200 |
| commit | a3204c740a59bebb3b37a294d83f4e353303a52c (patch) | |
| tree | b93dbe4003eb4daa32abccb1b999beb4b695ca18 /include/trace | |
| parent | tracing: Allow system call tracepoints to handle page faults (diff) | |
| download | linux-a3204c740a59bebb3b37a294d83f4e353303a52c.tar.xz linux-a3204c740a59bebb3b37a294d83f4e353303a52c.zip | |
tracing/ftrace: Add might_fault check to syscall probes
Add a might_fault() check to validate that the ftrace sys_enter/sys_exit
probe callbacks are indeed called from a context where page faults can
be handled.
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>
Link: https://lore.kernel.org/20241009010718.2050182-7-mathieu.desnoyers@efficios.com
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/trace_events.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/trace_events.h b/include/trace/trace_events.h index 63071aa5923d..4f22136fd465 100644 --- a/include/trace/trace_events.h +++ b/include/trace/trace_events.h @@ -446,6 +446,7 @@ __DECLARE_EVENT_CLASS(call, PARAMS(proto), PARAMS(args), PARAMS(tstruct), \ static notrace void \ trace_event_raw_event_##call(void *__data, proto) \ { \ + might_fault(); \ preempt_disable_notrace(); \ do_trace_event_raw_event_##call(__data, args); \ preempt_enable_notrace(); \ |