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Commit b7d44d94 authored by Satoru Takeuchi's avatar Satoru Takeuchi Committed by Rusty Russell
Browse files

hw_random: free rng_buffer at module exit 



rng-core module allocates rng_buffer by kmalloc() since commit
f7f154f1. But this buffer won't be
freed and there is a memory leak possibility at module exit.

Signed-off-by: default avatarSatoru Takeuchi <satoru.takeuchi@gmail.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent aabd6a8f

drivers/char/hw_random/core.c

+9 −0
Original line number Original line Diff line number Diff line
@@ -380,6 +380,15 @@ void hwrng_unregister(struct hwrng *rng) 
}

}

EXPORT_SYMBOL_GPL(hwrng_unregister);

EXPORT_SYMBOL_GPL(hwrng_unregister);





static void __exit hwrng_exit(void)

{

	mutex_lock(&rng_mutex);

	BUG_ON(current_rng);

	kfree(rng_buffer);

	mutex_unlock(&rng_mutex);

}



module_exit(hwrng_exit);





MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver");

MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver");

MODULE_LICENSE("GPL");
 
MODULE_LICENSE("GPL");