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skd: Fix out of array boundary access

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When enabling MSI-X, interrupts are requested for SKD_MAX_MSIX_COUNT
entries in skdev->msix_entries array, while the number of actually
allocated entries is skdev->msix_count. This might lead to an out of
boundary access in case number of allocated entries is less than
SKD_MAX_MSIX_COUNT. This update fixes the described misbehaviour.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Alexander Gordeev 2014-02-19 09:58:18 +01:00 committed by Jens Axboe
parent f219ad82f8
commit c5e3035c88
1 changed files with 1 additions and 1 deletions
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2
drivers/block/skd_main.c
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@ -3989,7 +3989,7 @@ static int skd_acquire_msix(struct skd_device *skdev)
}
/* Enable MSI-X vectors for the base queue */
for (i = 0; i < SKD_MAX_MSIX_COUNT; i++) {
for (i = 0; i < skdev->msix_count; i++) {
qentry = &skdev->msix_entries[i];
snprintf(qentry->isr_name, sizeof(qentry->isr_name),
"%s%d-msix %s", DRV_NAME, skdev->devno,