From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx> Instead of open coding a __dynamic_array() with a fixed length (which defeats the purpose of the dynamic array in the first place). Use the new __vstring() helper that will use a va_list and only write enough of the string into the ring buffer that is needed. Link: https://lkml.kernel.org/r/20220705224751.271015450@xxxxxxxxxxx Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> Cc: Eric Dumazet <edumazet@xxxxxxxxxx> Cc: Jakub Kicinski <kuba@xxxxxxxxxx> Cc: Paolo Abeni <pabeni@xxxxxxxxxx> Cc: linux-wireless@xxxxxxxxxxxxxxx Cc: netdev@xxxxxxxxxxxxxxx Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> --- net/mac80211/trace_msg.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/mac80211/trace_msg.h b/net/mac80211/trace_msg.h index 40141df09f25..c9dbe9aab7bd 100644 --- a/net/mac80211/trace_msg.h +++ b/net/mac80211/trace_msg.h @@ -24,13 +24,11 @@ DECLARE_EVENT_CLASS(mac80211_msg_event, TP_ARGS(vaf), TP_STRUCT__entry( - __dynamic_array(char, msg, MAX_MSG_LEN) + __vstring(msg, vaf->fmt, vaf->va) ), TP_fast_assign( - WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg), - MAX_MSG_LEN, vaf->fmt, - *vaf->va) >= MAX_MSG_LEN); + __assign_vstr(msg, vaf->fmt, vaf->va); ), TP_printk("%s", __get_str(msg)) -- 2.35.1
