proc_wait_for () lock wait_proc to avoid races

2026-04-16 22:00:42 +02:00
parent 9346a10d74
commit 7660bcab82
1 changed files with 4 additions and 0 deletions
--- a/kernel/proc/proc.c
+++ b/kernel/proc/proc.c
@@ -378,7 +378,11 @@ void proc_kill (struct proc* proc, struct reschedule_ctx* rctx) {
 }

 void proc_wait_for (struct proc* proc, struct reschedule_ctx* rctx, struct proc* wait_proc) {
+  uint64_t fwp;
+
+  spin_lock (&wait_proc->lock, &fwp);
  proc_sq_suspend (proc, &wait_proc->done_sq, NULL, 0, rctx, NULL, NULL);
+  spin_unlock (&wait_proc->lock, fwp);
 }

 void proc_irq_sched (void* arg, void* regs, bool user, struct reschedule_ctx* rctx) {