On Thu, Jan 05, 2023 at 11:54:52AM +0800, Zheng Yejian wrote: > [ Upstream commit ff4837f7fe59ff018eca4705a70eca5e0b486b97 ] > > The maximum number of synthetic fields supported is defined as > SYNTH_FIELDS_MAX which value currently is 64, but it actually fails > when try to generate a synthetic event with 64 fields by executing like: > > # echo "my_synth_event int v1; int v2; int v3; int v4; int v5; int v6;\ > int v7; int v8; int v9; int v10; int v11; int v12; int v13; int v14;\ > int v15; int v16; int v17; int v18; int v19; int v20; int v21; int v22;\ > int v23; int v24; int v25; int v26; int v27; int v28; int v29; int v30;\ > int v31; int v32; int v33; int v34; int v35; int v36; int v37; int v38;\ > int v39; int v40; int v41; int v42; int v43; int v44; int v45; int v46;\ > int v47; int v48; int v49; int v50; int v51; int v52; int v53; int v54;\ > int v55; int v56; int v57; int v58; int v59; int v60; int v61; int v62;\ > int v63; int v64" >> /sys/kernel/tracing/synthetic_events > > Correct the field counting to fix it. > > Link: https://lore.kernel.org/linux-trace-kernel/20221207091557.3137904-1-zhengyejian1@xxxxxxxxxx > > Cc: <mhiramat@xxxxxxxxxx> > Cc: <zanussi@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Fixes: c9e759b1e845 ("tracing: Rework synthetic event command parsing") > Signed-off-by: Zheng Yejian <zhengyejian1@xxxxxxxxxx> > Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> > [Fix conflict due to lack of c24be24aed405d64ebcf04526614c13b2adfb1d2] > Signed-off-by: Zheng Yejian <zhengyejian1@xxxxxxxxxx> > --- > kernel/trace/trace_events_synth.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Now queued up, thanks. greg k-h
