[PATCH] Re:[PATCH v3] zram: fix use-after-free in zram_writeback_endio

[wang wei]

>@@ -847,7 +849,7 @@ static void release_wb_ctl(struct zram_wb_ctl *wb_ctl)
> 		release_wb_req(req);
> 	}
>
>-	kfree(wb_ctl);
>+	kfree_rcu(wb_ctl, rcu);
> }

Do we need to add a 'rcu_assign_pointer(wb_ctl, NULL);' before 'kfree_rcu(wb_ctl, rcu)'?

Signed-off-by: wang wei <a929244872@xxxxxxx>

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2.25.1