Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "9 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  ocfs2/dlm: unlock lockres spinlock before dlm_lockres_put
  fault-inject: fix inverted interval/probability values in printk
  lib/Kconfig.debug: disable -Wframe-larger-than warnings with KASAN=y
  mm: make sendfile(2) killable
  thp: use is_zero_pfn() only after pte_present() check
  mailmap: update Javier Martinez Canillas' email
  MAINTAINERS: add Sergey as zsmalloc reviewer
  mm: cma: fix incorrect type conversion for size during dma allocation
  kmod: don't run async usermode helper as a child of kworker thread

kernel/kmod.c

@@ -327,9 +327,13 @@ static void call_usermodehelper_exec_work(struct work_struct *work)
 		call_usermodehelper_exec_sync(sub_info);
 	} else {
 		pid_t pid;
-
+		/*
+		 * Use CLONE_PARENT to reparent it to kthreadd; we do not
+		 * want to pollute current->children, and we need a parent
+		 * that always ignores SIGCHLD to ensure auto-reaping.
+		 */
 		pid = kernel_thread(call_usermodehelper_exec_async, sub_info,
-				    SIGCHLD);
+				    CLONE_PARENT | SIGCHLD);
 		if (pid < 0) {
 			sub_info->retval = pid;
 			umh_complete(sub_info);