Unsigned variable "total" was tested for negativity after subtraction operation. 2 instances. Replaced that with the test of minuend being greater than subtrahend before the subtraction.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80421 Reported-by: David Binderman <dcb...@hotmail.com> Signed-off-by: Andrey Utkin <andrey.krieger.ut...@gmail.com> --- drivers/crypto/omap-aes.c | 4 ++-- drivers/crypto/omap-des.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index cb98fa5..413ed78 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -1038,10 +1038,10 @@ static irqreturn_t omap_aes_irq(int irq, void *dev_id) } } + BUG_ON(dd->total < AES_BLOCK_SIZE); + dd->total -= AES_BLOCK_SIZE; - BUG_ON(dd->total < 0); - /* Clear IRQ status */ status &= ~AES_REG_IRQ_DATA_OUT; omap_aes_write(dd, AES_REG_IRQ_STATUS(dd), status); diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index b8bc84b..93aa213 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -965,10 +965,10 @@ static irqreturn_t omap_des_irq(int irq, void *dev_id) } } + BUG_ON(dd->total < DES_BLOCK_SIZE); + dd->total -= DES_BLOCK_SIZE; - BUG_ON(dd->total < 0); - /* Clear IRQ status */ status &= ~DES_REG_IRQ_DATA_OUT; omap_des_write(dd, DES_REG_IRQ_STATUS(dd), status); -- 1.8.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
