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crypto: omap-sham - fix crypto engine cleanup

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omap_sham_probe() allocates and starts a crypto engine, but the remove
path does not call the matching crypto_engine_exit(). The probe failure
path already performs this cleanup.

crypto_engine_alloc_init() creates a kthread worker for processing
requests. Without crypto_engine_exit() during driver removal, the
worker is left running after the device is removed.

Call crypto_engine_exit() after unregistering the algorithms and before
tearing down the remaining request handling resources. This stops the
engine and destroys its worker.

This issue was found by manual code inspection.

Fixes: 133c3d434d ("crypto: omap-sham - convert to use crypto engine")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Guangshuo Li 2026-09-12 22:46:08 +08:00 committed by Herbert Xu
parent 5d69ed4cd4
commit be51ea091c
1 changed files with 1 additions and 0 deletions
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1
drivers/crypto/omap-sham.c
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@ -2129,6 +2129,7 @@ static void omap_sham_remove(struct platform_device *pdev)
list_del(&dd->list);
spin_unlock_bh(&sham.lock);
omap_sham_unregister_algs(dd->pdata);
crypto_engine_exit(dd->engine);
cancel_work_sync(&dd->done_task);
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_disable(&pdev->dev);