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| author | Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> | 2017-02-16 12:51:14 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-06-05 21:17:14 +0100 |
| commit | 7544d4028a4b5ab56e369d83a7fe7e7ebcf81c88 (patch) | |
| tree | 07ebdd3798597ba8e131d1cb16362c791dc05005 /drivers | |
| parent | ba618caab5c21a012f38943e04fa498f5c1938e8 (diff) | |
| download | linux-stable-7544d4028a4b5ab56e369d83a7fe7e7ebcf81c88.tar.gz linux-stable-7544d4028a4b5ab56e369d83a7fe7e7ebcf81c88.tar.bz2 linux-stable-7544d4028a4b5ab56e369d83a7fe7e7ebcf81c88.zip | |
scsi: aacraid: Fix memory leak in fib init path
commit 1bff5abca65d4b9761fcc992ab6288243220003d upstream.
aac_fib_map_free frees misaligned fib dma memory, additionally it does not
free up the whole memory.
Fixed by changing the code to free up the correct and full memory
allocation.
Fixes: e8b12f0fb835223 ([SCSI] aacraid: Add new code for PMC-Sierra's SRC based controller family)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[bwh: Backported to 3.16: s/max_cmd_size/max_fib_size/]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/aacraid/commsup.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index ce177a50ec05..8c2d9efcabb3 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -83,12 +83,20 @@ 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->hw_fib_va, dev->hw_fib_pa); - } + size_t alloc_size; + size_t fib_size; + int num_fibs; + + if(!dev->hw_fib_va || !dev->max_fib_size) + return; + + num_fibs = dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; + fib_size = dev->max_fib_size + sizeof(struct aac_fib_xporthdr); + alloc_size = fib_size * num_fibs + ALIGN32 - 1; + + pci_free_consistent(dev->pdev, alloc_size, dev->hw_fib_va, + dev->hw_fib_pa); + dev->hw_fib_va = NULL; dev->hw_fib_pa = 0; } @@ -116,22 +124,20 @@ int aac_fib_setup(struct aac_dev * dev) if (i<0) return -ENOMEM; - /* 32 byte alignment for PMC */ - hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1); - dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + - (hw_fib_pa - dev->hw_fib_pa)); - dev->hw_fib_pa = hw_fib_pa; memset(dev->hw_fib_va, 0, (dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)); + /* 32 byte alignment for PMC */ + hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1); + hw_fib = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + + (hw_fib_pa - dev->hw_fib_pa)); + /* add Xport header */ - dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + + hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + sizeof(struct aac_fib_xporthdr)); - dev->hw_fib_pa += sizeof(struct aac_fib_xporthdr); + hw_fib_pa += sizeof(struct aac_fib_xporthdr); - hw_fib = dev->hw_fib_va; - hw_fib_pa = dev->hw_fib_pa; /* * Initialise the fibs */ |