linux-kernel - [PATCH 3/3] stress-shmsysv: exercise shmat with SHM

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]

Message-Id: <20200922072730.68911-3-piyushgoyaliit@gmail.com>
Date:   Tue, 22 Sep 2020 12:57:30 +0530
From:   Piyush Goyal <piyushgoyaliit@...il.com>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] stress-shmsysv: exercise shmat with SHM_REMAP flag on NULL address

Exercise shmat syscall with SHM_REMAP flag on NULL address resulting
in EINVAL error and more kernel coverage.

Signed-off-by: Piyush Goyal <piyushgoyaliit@...il.com>
---
 stress-shm-sysv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/stress-shm-sysv.c b/stress-shm-sysv.c
index 9efaa091..e2aff788 100644
--- a/stress-shm-sysv.c
+++ b/stress-shm-sysv.c
@@ -149,6 +149,10 @@ static void exercise_shmat(int shm_id)
 
 	addr = shmat(shm_id, NULL, SHM_RND);
 	(void)addr;
+
+	/* Exercise shmat with SHM_REMAP flag on NULL address */
+	addr = shmat(shm_id, NULL, SHM_REMAP);
+	(void)addr;
 }
 
 #if defined(__linux__)
-- 
2.25.1