netdev - [PATCH net-next 1/6] net: page_pool: support error injection

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Fri, 26 Apr 2024 16:23:54 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	linux-kselftest@...r.kernel.org,
	willemdebruijn.kernel@...il.com,
	Jakub Kicinski <kuba@...nel.org>,
	hawk@...nel.org,
	ilias.apalodimas@...aro.org
Subject: [PATCH net-next 1/6] net: page_pool: support error injection

Because of caching / recycling using the general page allocation
failures to induce errors in page pool allocation is very hard.
Add direct error injection support to page_pool_alloc_pages().

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: hawk@...nel.org
CC: ilias.apalodimas@...aro.org
---
 net/core/page_pool.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 273c24429bce..8bcc7014a61a 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -5,6 +5,7 @@
  *	Copyright (C) 2016 Red Hat, Inc.
  */
 
+#include <linux/error-injection.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
@@ -550,6 +551,7 @@ struct page *page_pool_alloc_pages(struct page_pool *pool, gfp_t gfp)
 	return page;
 }
 EXPORT_SYMBOL(page_pool_alloc_pages);
+ALLOW_ERROR_INJECTION(page_pool_alloc_pages, NULL);
 
 /* Calculate distance between two u32 values, valid if distance is below 2^(31)
  *  https://en.wikipedia.org/wiki/Serial_number_arithmetic#General_Solution
-- 
2.44.0