Module Name: src
Committed By: gson
Date: Tue Sep 29 07:51:01 UTC 2020
Modified Files:
src/sys/kern: kern_entropy.c
Log Message:
Log a message when a process blocks due to a lack of entropy.
Discussed on tech-kern.
To generate a diff of this commit:
cvs rdiff -u -r1.23 -r1.24 src/sys/kern/kern_entropy.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/kern_entropy.c
diff -u src/sys/kern/kern_entropy.c:1.23 src/sys/kern/kern_entropy.c:1.24
--- src/sys/kern/kern_entropy.c:1.23 Fri Aug 14 00:53:16 2020
+++ src/sys/kern/kern_entropy.c Tue Sep 29 07:51:01 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_entropy.c,v 1.23 2020/08/14 00:53:16 riastradh Exp $ */
+/* $NetBSD: kern_entropy.c,v 1.24 2020/09/29 07:51:01 gson Exp $ */
/*-
* Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -75,7 +75,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_entropy.c,v 1.23 2020/08/14 00:53:16 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_entropy.c,v 1.24 2020/09/29 07:51:01 gson Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -1297,6 +1297,9 @@ entropy_extract(void *buf, size_t len, i
/* Wait for some entropy to come in and try again. */
KASSERT(E->stage >= ENTROPY_WARM);
+ printf("entropy: pid %d (%s) blocking due to lack of entropy\n",
+ curproc->p_pid, curproc->p_comm);
+
if (ISSET(flags, ENTROPY_SIG)) {
error = cv_wait_sig(&E->cv, &E->lock);
if (error)
