[PATCH] rcu: Avoid kthread_stop on invalid pointer if rcutorturereader startup fails

From: Josh Triplett
Date: Wed Aug 16 2006 - 18:21:33 EST

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>
kernel/rcutorture.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index aff0064..8b09c95 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -779,7 +779,7 @@ 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]),
if (reader_tasks == NULL) {

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