Re: [syzbot] [PATCH] MTD: fix slab-use-after-free due to dangling pointer in notifier chain

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Subject: [PATCH] MTD: fix slab-use-after-free due to dangling pointer in notifier chain
Author: dennis.lamerice@xxxxxxxxx

Signed-off-by: Dennis Lam <dennis.lamerice@xxxxxxxxx>
---
#syz test

 drivers/mtd/ubi/wl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 4f6f339d8fb8..31a1e5515d98 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1995,6 +1995,7 @@ static void protection_queue_destroy(struct ubi_device *ubi)
 void ubi_wl_close(struct ubi_device *ubi)
 {
 	dbg_wl("close the WL sub-system");
+	unregister_reboot_notifier(&ubi->wl_reboot_notifier);
 	ubi_fastmap_close(ubi);
 	shutdown_work(ubi);
 	protection_queue_destroy(ubi);
-- 
2.47.0