On 01/14, Peter Zijlstra wrote: > > On Tue, Jan 14, 2025 at 10:22:20AM +0100, Jiri Olsa wrote: > > > > hack below seems to fix the issue, it's using rbx to signal that uretprobe > > syscall got executed, if not, trampoline does int3 and executes uretprobe > > handler in the old way > > > > unfortunately now the uretprobe trampoline size crosses the xol slot limit so > > will need to come up with some generic/arch code solution for that, code below > > is neglecting that for now > > Can't you detect the filter earlier and simply not install the > trampoline? Did you mean detect the filter in prepare_uretprobe() ? The probed function can install the filter before return... Oleg.
