qiurui
/
Ubuntu-focal-kernel
mirror of https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

radix tree test suite: Register the main thread with the RCU library 

BugLink: https://bugs.launchpad.net/bugs/1926490

[ Upstream commit 1bb4bd266c ]

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>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-03-31 14:59:19 -04:00 committed by Stefan Bader
parent 5548ba374a
commit c3d8166d9c
3 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/testing/radix-tree/idr-test.c
View File

@ -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;
}

2
tools/testing/radix-tree/multiorder.c
View File

@ -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;
}

2
tools/testing/radix-tree/xarray.c
View File

@ -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;
}