linux-kernel - [PATCH] dmaengine: ioatdma: Fix missing kmem_cache

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Date: Tue, 14 May 2024 13:52:31 +0300
From: Nikita Shubin via B4 Relay <devnull+n.shubin.yadro.com@...nel.org>
To: Vinod Koul <vkoul@...nel.org>, Dave Jiang <dave.jiang@...el.com>, 
 Dan Williams <dan.j.williams@...el.com>
Cc: dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Nikita Shubin <nikita.shubin@...uefel.me>, 
 Nikita Shubin <n.shubin@...ro.com>
Subject: [PATCH] dmaengine: ioatdma: Fix missing kmem_cache_destroy()

From: Nikita Shubin <n.shubin@...ro.com>

Fix missing kmem_cache_destroy() for ioat_sed_cache in
ioat_exit_module().

Noticed via:

```
modprobe ioatdma
rmmod ioatdma
modprobe ioatdma
debugfs: Directory 'ioat_sed_ent' with parent 'slab' already present!
```

Fixes: c0f28ce66ecf ("dmaengine: ioatdma: move all the init routines")
Signed-off-by: Nikita Shubin <n.shubin@...ro.com>
---
 drivers/dma/ioat/init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
index 9c364e92cb82..61329c279040 100644
--- a/drivers/dma/ioat/init.c
+++ b/drivers/dma/ioat/init.c
@@ -1445,6 +1445,7 @@ module_init(ioat_init_module);
 static void __exit ioat_exit_module(void)
 {
 	pci_unregister_driver(&ioat_pci_driver);
+	kmem_cache_destroy(ioat_sed_cache);
 	kmem_cache_destroy(ioat_cache);
 }
 module_exit(ioat_exit_module);

---
base-commit: a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6
change-id: 20240514-ioatdma_fixes-7460f4fd7d51

Best regards,
-- 
Nikita Shubin <n.shubin@...ro.com>