From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
Chris von Recklinghausen <crecklin@redhat.com>,
Sasha Levin <sashal@kernel.org>,
linux-fsdevel@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 15/22] radix tree test suite: Register the main thread with the RCU library
Date: Mon, 5 Apr 2021 12:04:24 -0400 [thread overview]
Message-ID: <20210405160432.268374-15-sashal@kernel.org> (raw)
In-Reply-To: <20210405160432.268374-1-sashal@kernel.org>
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
[ Upstream commit 1bb4bd266cf39fd2fa711f2d265c558b92df1119 ]
Several test runners register individual worker threads with the
RCU library, but neglect to register the main thread, which can lead
to objects being freed while the main thread is in what appears to be
an RCU critical section.
Reported-by: Chris von Recklinghausen <crecklin@redhat.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/radix-tree/idr-test.c | 2 ++
tools/testing/radix-tree/multiorder.c | 2 ++
tools/testing/radix-tree/xarray.c | 2 ++
3 files changed, 6 insertions(+)
diff --git a/tools/testing/radix-tree/idr-test.c b/tools/testing/radix-tree/idr-test.c
index 3b796dd5e577..44ceff95a9b3 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -577,6 +577,7 @@ void ida_tests(void)
int __weak main(void)
{
+ rcu_register_thread();
radix_tree_init();
idr_checks();
ida_tests();
@@ -584,5 +585,6 @@ int __weak main(void)
rcu_barrier();
if (nr_allocated)
printf("nr_allocated = %d\n", nr_allocated);
+ rcu_unregister_thread();
return 0;
}
diff --git a/tools/testing/radix-tree/multiorder.c b/tools/testing/radix-tree/multiorder.c
index 9eae0fb5a67d..e00520cc6349 100644
--- a/tools/testing/radix-tree/multiorder.c
+++ b/tools/testing/radix-tree/multiorder.c
@@ -224,7 +224,9 @@ void multiorder_checks(void)
int __weak main(void)
{
+ rcu_register_thread();
radix_tree_init();
multiorder_checks();
+ rcu_unregister_thread();
return 0;
}
diff --git a/tools/testing/radix-tree/xarray.c b/tools/testing/radix-tree/xarray.c
index e61e43efe463..f20e12cbbfd4 100644
--- a/tools/testing/radix-tree/xarray.c
+++ b/tools/testing/radix-tree/xarray.c
@@ -25,11 +25,13 @@ void xarray_tests(void)
int __weak main(void)
{
+ rcu_register_thread();
radix_tree_init();
xarray_tests();
radix_tree_cpu_dead(1);
rcu_barrier();
if (nr_allocated)
printf("nr_allocated = %d\n", nr_allocated);
+ rcu_unregister_thread();
return 0;
}
--
2.30.2
next prev parent reply other threads:[~2021-04-05 16:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210405160432.268374-1-sashal@kernel.org>
2021-04-05 16:04 ` [PATCH AUTOSEL 5.10 12/22] XArray: Fix splitting to non-zero orders Sasha Levin
2021-04-05 16:04 ` [PATCH AUTOSEL 5.10 13/22] radix tree test suite: Fix compilation Sasha Levin
2021-04-05 16:04 ` Sasha Levin [this message]
2021-04-05 16:04 ` [PATCH AUTOSEL 5.10 16/22] idr test suite: Take RCU read lock in idr_find_test_1 Sasha Levin
2021-04-05 16:04 ` [PATCH AUTOSEL 5.10 17/22] idr test suite: Create anchor before launching throbber Sasha Levin
2021-04-05 16:04 ` [PATCH AUTOSEL 5.10 22/22] block: don't ignore REQ_NOWAIT for direct IO Sasha Levin
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