diff options
Diffstat (limited to 'src/runtime/stack.c')
| -rw-r--r-- | src/runtime/stack.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/runtime/stack.c b/src/runtime/stack.c index fb23cc1c3b..a4947a53b3 100644 --- a/src/runtime/stack.c +++ b/src/runtime/stack.c @@ -706,6 +706,14 @@ runtime·newstack(void) runtime·printf("runtime: split stack overflow: %p < %p\n", sp, gp->stack.lo); runtime·throw("runtime: split stack overflow"); } + + if(gp->sched.ctxt != nil) { + // morestack wrote sched.ctxt on its way in here, + // without a write barrier. Run the write barrier now. + // It is not possible to be preempted between then + // and now, so it's okay. + runtime·writebarrierptr_nostore(&gp->sched.ctxt, gp->sched.ctxt); + } if(gp->stackguard0 == (uintptr)StackPreempt) { if(gp == g->m->g0) |