On Fri, Jul 10, 2020 at 08:23:19PM -0400, Steven Rostedt wrote: > On Fri, 10 Jul 2020 15:38:45 +0200 > Peter Zijlstra <pet...@infradead.org> wrote: > > > GCC can turn our static_call(name)(args...) into a tail call, in which > > case we get a JMP.d32 into the trampoline (which then does a further > > tail-call). > > > > Teach objtool to recognise and mark these in .static_call_sites and > > adjust the code patching to deal with this. > > > > Hmm, were you able to trigger crashes before this patch?
No, just a bunch of tail-calls that didn't get patched and would still point to the trampoline.
