Commit f88fa79a authored by Raghava Aditya Renukunta's avatar Raghava Aditya Renukunta Committed by Martin K. Petersen

aacraid: Fix memory leak in aac_fib_map_free

aac_fib_map_free() calls pci_free_consistent() without checking that
dev->hw_fib_va is not NULL and dev->max_fib_size is not zero.If they are
indeed NULL/0, this will result in a hang as pci_free_consistent() will
attempt to invalidate cache for the entire 64-bit address space
(which would take a very long time).

Fixed by adding a check to make sure that dev->hw_fib_va and
dev->max_fib_size are not NULL and 0 respectively.

Fixes: 9ad5204d - "[SCSI]aacraid: incorrect dma mapping mask during blinked recover or user initiated reset"
Cc: stable@vger.kernel.org
Signed-off-by: default avatarRaghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: default avatarTomas Henzl <thenzl@redhat.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 5c63f7f7
......@@ -83,9 +83,12 @@ static int fib_map_alloc(struct aac_dev *dev)
void aac_fib_map_free(struct aac_dev *dev)
{
if (dev->hw_fib_va && dev->max_fib_size) {
pci_free_consistent(dev->pdev,
dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB),
(dev->max_fib_size *
(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)),
dev->hw_fib_va, dev->hw_fib_pa);
}
dev->hw_fib_va = NULL;
dev->hw_fib_pa = 0;
}
......
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