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 <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Bartlomiej Zolnierkiewicz <[email protected]> Cc: Kyungmin Park <[email protected]> Cc: [email protected] --- drivers/block/skd_main.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c index eb6e1e0..3fa0918 100644 --- a/drivers/block/skd_main.c +++ b/drivers/block/skd_main.c @@ -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, -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
