On Thu, 6 Nov 2025 17:55:13 +0000 Beau Belgrave <[email protected]> wrote:
> On Fri, Nov 07, 2025 at 01:52:05AM +0900, Masami Hiramatsu (Google) wrote: > > Hi, > > > > Beau reported tprobe example in the document does not work on 6.17 > > kernel. > > > > Thanks! I've applied this series locally and tested this. Everything > works well in our environment. Great! > > > > > And found it forgot to set tuser->tpoint before calling > > tracepoint_user_register() which calls > > tracepoint_probe_register_prio_may_exist(tuser->tpoint). > > To fix that, I just moved the tuser->tpoint setting line > > right before tracepoint_user_register() call [1/2]. > > > > I also found another issue when I switched enable and disable[2/2]. > > > > Thanks! I've validated no bad dmesg, etc. and can delete the tprobe > without issues after we disable it. > > > I hope this report will help someone to do similar debug by tracing. > > > > I will reference this, it's very useful. > > For the series: > Tested-by: Beau Belgrave <[email protected]> > Reviewed-by: Beau Belgrave <[email protected]> Thanks! > > Thanks, > -Beau > > Thank you, > > > > --- > > > > Masami Hiramatsu (Google) (2): > > tracing: tprobe-events: Fix to register tracepoint correctly > > tracing: tprobe-events: Fix to put tracepoint_user when disable the > > tprobe > > > > > > kernel/trace/trace_fprobe.c | 7 ++++++- > > 1 file changed, 6 insertions(+), 1 deletion(-) > > > > -- > > Masami Hiramatsu (Google) <[email protected]> -- Masami Hiramatsu (Google) <[email protected]>
