* [patch] crypto: qat - silence a static checker warning
@ 2015-08-21 8:47 Dan Carpenter
2015-08-22 15:29 ` Tadeusz Struk
0 siblings, 1 reply; 3+ messages in thread
From: Dan Carpenter @ 2015-08-21 8:47 UTC (permalink / raw)
To: Tadeusz Struk
Cc: Herbert Xu, David S. Miller, Allan, Bruce W, Ahsan Atta,
qat-linux, linux-crypto, kernel-janitors
My static checker assumes that if we are getting numbers as a string
using kstrotoint() then that means they come from outside the kernel and
are untrustworthy.
This may or may not be true in this case, but it seems harmless to add
a range check here.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c
index d5d8198..ec3abf9 100644
--- a/drivers/crypto/qat/qat_common/adf_transport.c
+++ b/drivers/crypto/qat/qat_common/adf_transport.c
@@ -264,6 +264,10 @@ int adf_create_ring(struct adf_accel_dev *accel_dev, const char *section,
dev_err(&GET_DEV(accel_dev), "Can't get ring number\n");
return -EFAULT;
}
+ if (ring_num >= ARRAY_SIZE(bank->rings)) {
+ dev_err(&GET_DEV(accel_dev), "Invalid ring number\n");
+ return -EFAULT;
+ }
bank = &transport_data->banks[bank_num];
if (adf_reserve_ring(bank, ring_num)) {
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [patch] crypto: qat - silence a static checker warning
2015-08-21 8:47 [patch] crypto: qat - silence a static checker warning Dan Carpenter
@ 2015-08-22 15:29 ` Tadeusz Struk
2015-08-24 14:24 ` Herbert Xu
0 siblings, 1 reply; 3+ messages in thread
From: Tadeusz Struk @ 2015-08-22 15:29 UTC (permalink / raw)
To: Dan Carpenter
Cc: Herbert Xu, David S. Miller, Allan, Bruce W, Ahsan Atta,
qat-linux, linux-crypto, kernel-janitors
Hi Dan,
On 08/21/2015 01:47 AM, Dan Carpenter wrote:
> My static checker assumes that if we are getting numbers as a string
> using kstrotoint() then that means they come from outside the kernel and
> are untrustworthy.
>
> This may or may not be true in this case, but it seems harmless to add
> a range check here.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c
> index d5d8198..ec3abf9 100644
> --- a/drivers/crypto/qat/qat_common/adf_transport.c
> +++ b/drivers/crypto/qat/qat_common/adf_transport.c
> @@ -264,6 +264,10 @@ int adf_create_ring(struct adf_accel_dev *accel_dev, const char *section,
> dev_err(&GET_DEV(accel_dev), "Can't get ring number\n");
> return -EFAULT;
> }
> + if (ring_num >= ARRAY_SIZE(bank->rings)) {
> + dev_err(&GET_DEV(accel_dev), "Invalid ring number\n");
> + return -EFAULT;
> + }
>
> bank = &transport_data->banks[bank_num];
> if (adf_reserve_ring(bank, ring_num)) {
>
ACK, although I would use the ADF_ETR_MAX_RINGS_PER_BANK define.
So if you don't mind.
Thanks!
---8<---
Add range check for ring number.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c
index d5d8198..3865ae8 100644
--- a/drivers/crypto/qat/qat_common/adf_transport.c
+++ b/drivers/crypto/qat/qat_common/adf_transport.c
@@ -264,6 +264,10 @@ int adf_create_ring(struct adf_accel_dev *accel_dev, const char *section,
dev_err(&GET_DEV(accel_dev), "Can't get ring number\n");
return -EFAULT;
}
+ if (ring_num >= ADF_ETR_MAX_RINGS_PER_BANK) {
+ dev_err(&GET_DEV(accel_dev), "Invalid ring number\n");
+ return -EFAULT;
+ }
bank = &transport_data->banks[bank_num];
if (adf_reserve_ring(bank, ring_num)) {
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [patch] crypto: qat - silence a static checker warning
2015-08-22 15:29 ` Tadeusz Struk
@ 2015-08-24 14:24 ` Herbert Xu
0 siblings, 0 replies; 3+ messages in thread
From: Herbert Xu @ 2015-08-24 14:24 UTC (permalink / raw)
To: Tadeusz Struk
Cc: Dan Carpenter, David S. Miller, Allan, Bruce W, Ahsan Atta,
qat-linux, linux-crypto, kernel-janitors
On Sat, Aug 22, 2015 at 08:29:30AM -0700, Tadeusz Struk wrote:
>
> Add range check for ring number.
>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Applied.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-08-21 8:47 [patch] crypto: qat - silence a static checker warning Dan Carpenter
2015-08-22 15:29 ` Tadeusz Struk
2015-08-24 14:24 ` Herbert Xu
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