diff options
Diffstat (limited to 'sys/kern/kern_thr.c')
| -rw-r--r-- | sys/kern/kern_thr.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/kern/kern_thr.c b/sys/kern/kern_thr.c index 0e8c2b9f362e..4329959a2ef4 100644 --- a/sys/kern/kern_thr.c +++ b/sys/kern/kern_thr.c @@ -347,6 +347,17 @@ kern_thr_exit(struct thread *td) p = td->td_proc; /* + * Clear kernel ASTs in advance of selecting the last exiting + * thread and acquiring schedulers locks. It is fine to + * clear the ASTs here even if we are not going to exit after + * all. On the other hand, leaving them pending could trigger + * execution in subsystems in a context where they are not + * prepared to handle top kernel actions, even in execution of + * an unrelated thread. + */ + ast_kclear(td); + + /* * If all of the threads in a process call this routine to * exit (e.g. all threads call pthread_exit()), exactly one * thread should return to the caller to terminate the process |