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Date: Wed, 19 Aug 2020 20:01:12 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Gaurav Singh <gaurav1086@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, Shuah Khan <shuah@...nel.org>, Tejun Heo <tj@...nel.org>, Michal Koutn <mkoutny@...e.com>, Roman Gushchin <guro@...com>, Christian Brauner <christian.brauner@...ntu.com>, Chris Down <chris@...isdown.name>, Linus Torvalds <torvalds@...ux-foundation.org>, Sasha Levin <sashal@...nel.org>, linux-kselftest@...r.kernel.org Subject: [PATCH AUTOSEL 5.8 23/27] tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference From: Gaurav Singh <gaurav1086@...il.com> [ Upstream commit d830020656c5b68ced962ed3cb51a90e0a89d4c4 ] Haven't reproduced this issue. This PR is does a minor code cleanup. Signed-off-by: Gaurav Singh <gaurav1086@...il.com> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> Reviewed-by: Andrew Morton <akpm@...ux-foundation.org> Cc: Shuah Khan <shuah@...nel.org> Cc: Tejun Heo <tj@...nel.org> Cc: Michal Koutn <mkoutny@...e.com> Cc: Roman Gushchin <guro@...com> Cc: Christian Brauner <christian.brauner@...ntu.com> Cc: Chris Down <chris@...isdown.name> Link: http://lkml.kernel.org/r/20200726013808.22242-1-gaurav1086@gmail.com Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- tools/testing/selftests/cgroup/cgroup_util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c index 8a637ca7d73a4..05853b0b88318 100644 --- a/tools/testing/selftests/cgroup/cgroup_util.c +++ b/tools/testing/selftests/cgroup/cgroup_util.c @@ -106,7 +106,7 @@ int cg_read_strcmp(const char *cgroup, const char *control, /* Handle the case of comparing against empty string */ if (!expected) - size = 32; + return -1; else size = strlen(expected) + 1; -- 2.25.1
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