diff options
| author |   Bjørn Mork <bjorn@mork.no> | 2012-11-21 09:54:48 +0100 |
|---|---|---|
| committer |   James Bottomley <JBottomley@Parallels.com> | 2013-07-05 22:42:42 +0100 |
| commit | 7a6a731bd00ca90d0e250867c3b9c05b5ff0fa49 (patch) | |
| tree | 436e4632cffee92778dbafbb0c426fe267bbe4ac /drivers/scsi/megaraid | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 (diff) | |
| download | linux-dev-7a6a731bd00ca90d0e250867c3b9c05b5ff0fa49.tar.xz linux-dev-7a6a731bd00ca90d0e250867c3b9c05b5ff0fa49.zip | |
[SCSI] megaraid_sas: fix memory leak if SGL has zero length entries
commit 98cb7e44 ([SCSI] megaraid_sas: Sanity check user
supplied length before passing it to dma_alloc_coherent())
introduced a memory leak. Memory allocated for entries
following zero length SGL entries will not be freed.
Reference: http://bugs.debian.org/688198
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Cc: <stable@vger.kernel.org>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 6002d363c637..0177295599e0 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -4958,10 +4958,12 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance, sense, sense_handle); } - for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { - dma_free_coherent(&instance->pdev->dev, - kern_sge32[i].length, - kbuff_arr[i], kern_sge32[i].phys_addr); + for (i = 0; i < ioc->sge_count; i++) { + if (kbuff_arr[i]) + dma_free_coherent(&instance->pdev->dev, + kern_sge32[i].length, + kbuff_arr[i], + kern_sge32[i].phys_addr); } megasas_return_cmd(instance, cmd); |