The patch titled
rcu: Avoid kthread_stop on invalid pointer if rcutorture reader startup fails
has been removed from the -mm tree. Its filename is
rcu-avoid-kthread_stop-on-invalid-pointer-if-rcutorture.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: rcu: Avoid kthread_stop on invalid pointer if rcutorture reader startup fails
From: Josh Triplett <josht@xxxxxxxxxx>
rcu_torture_init kmallocs the array of reader threads, then creates each
one with kthread_run, cleaning up with rcu_torture_cleanup if this fails.
rcu_torture_cleanup calls kthread_stop on any non-NULL pointer in the
array; however, any readers after the one that failed to start up will have
invalid pointers, not null pointers. Avoid this by using kzalloc instead.
Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxx>
Acked-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/rcutorture.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/rcutorture.c~rcu-avoid-kthread_stop-on-invalid-pointer-if-rcutorture kernel/rcutorture.c
--- a/kernel/rcutorture.c~rcu-avoid-kthread_stop-on-invalid-pointer-if-rcutorture
+++ a/kernel/rcutorture.c
@@ -780,7 +780,7 @@ rcu_torture_init(void)
writer_task = NULL;
goto unwind;
}
- reader_tasks = kmalloc(nrealreaders * sizeof(reader_tasks[0]),
+ reader_tasks = kzalloc(nrealreaders * sizeof(reader_tasks[0]),
GFP_KERNEL);
if (reader_tasks == NULL) {
VERBOSE_PRINTK_ERRSTRING("out of memory");
_
Patches currently in -mm which might be from josht@xxxxxxxxxx are
origin.patch
-
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