@@ -15,6 +15,8 @@
#include "adf_transport_access_macros.h"
#include "adf_transport_internal.h"
+#define ADF_MAX_NUM_VFS 32
+
static int adf_enable_msix(struct adf_accel_dev *accel_dev)
{
struct adf_accel_pci *pci_dev_info = &accel_dev->accel_pci_dev;
@@ -72,7 +74,7 @@ static irqreturn_t adf_msix_isr_ae(int irq, void *dev_ptr)
struct adf_bar *pmisc =
&GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
void __iomem *pmisc_bar_addr = pmisc->virt_addr;
- u32 vf_mask;
+ unsigned long vf_mask;
/* Get the interrupt sources triggered by VFs */
vf_mask = ((ADF_CSR_RD(pmisc_bar_addr, ADF_ERRSOU5) &
@@ -93,8 +95,7 @@ static irqreturn_t adf_msix_isr_ae(int irq, void *dev_ptr)
* unless the VF is malicious and is attempting to
* flood the host OS with VF2PF interrupts.
*/
- for_each_set_bit(i, (const unsigned long *)&vf_mask,
- (sizeof(vf_mask) * BITS_PER_BYTE)) {
+ for_each_set_bit(i, &vf_mask, ADF_MAX_NUM_VFS) {
vf_info = accel_dev->pf.vf_info + i;
if (!__ratelimit(&vf_info->vf2pf_ratelimit)) {
Replace vf_mask type with unsigned long to avoid a stack-out-of-bound. This is to fix the following warning reported by KASAN the first time adf_msix_isr_ae() gets called. [ 692.091987] BUG: KASAN: stack-out-of-bounds in find_first_bit+0x28/0x50 [ 692.092017] Read of size 8 at addr ffff88afdf789e60 by task swapper/32/0 [ 692.092076] Call Trace: [ 692.092089] <IRQ> [ 692.092101] dump_stack+0x9c/0xcf [ 692.092132] print_address_description.constprop.0+0x18/0x130 [ 692.092164] ? find_first_bit+0x28/0x50 [ 692.092185] kasan_report.cold+0x7f/0x111 [ 692.092213] ? static_obj+0x10/0x80 [ 692.092234] ? find_first_bit+0x28/0x50 [ 692.092262] find_first_bit+0x28/0x50 [ 692.092288] adf_msix_isr_ae+0x16e/0x230 [intel_qat] Fixes: ed8ccaef52fa ("crypto: qat - Add support for SRIOV") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Marco Chiappero <marco.chiappero@intel.com> Reviewed-by: Fiona Trahe <fiona.trahe@intel.com> --- drivers/crypto/qat/qat_common/adf_isr.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)