[PATCH v2 1/2] kthread: remove kthread_exit()

Frederic Weisbecker frederic at kernel.org
Tue Mar 10 22:26:32 UTC 2026


Le Tue, Mar 10, 2026 at 03:56:09PM +0100, Christian Brauner a écrit :
> In 28aaa9c39945 ("kthread: consolidate kthread exit paths to prevent use-after-free")
> we folded kthread_exit() into do_exit() when we fixed a nasty UAF bug.
> We left kthread_exit() around as an alias to do_exit(). Remove it
> completely.

Thanks for fixing that UAF! I unfortunately missed it.

> 
> Reported-by: Christian Loehle <christian.loehle at arm.com>
> Link: https://lore.kernel.org/1ff1bce2-8bb4-463c-a631-16e14f4ea7e2@arm.com
> Signed-off-by: Christian Brauner <brauner at kernel.org>

Reviewed-by: Frederic Weisbecker <frederic at kernel.org>

-- 
Frederic Weisbecker
SUSE Labs



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