From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit 32fe45274edb5926abc0fac7263d9f889d02d9cf ]
Add check for dma_map_single() and return error if it fails in order to avoid invalid DMA address.
Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver") Link: https://lore.kernel.org/r/20230128110832.6792-1-jiasheng@iscas.ac.cn Signed-off-by: Jiasheng Jiang jiasheng@iscas.ac.cn Reviewed-by: Jason Yan yanaijie@huawei.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/aic94xx/aic94xx_task.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c index f923ed019d4a1..593b167ceefee 100644 --- a/drivers/scsi/aic94xx/aic94xx_task.c +++ b/drivers/scsi/aic94xx/aic94xx_task.c @@ -50,6 +50,9 @@ static int asd_map_scatterlist(struct sas_task *task, dma_addr_t dma = dma_map_single(&asd_ha->pcidev->dev, p, task->total_xfer_len, task->data_dir); + if (dma_mapping_error(&asd_ha->pcidev->dev, dma)) + return -ENOMEM; + sg_arr[0].bus_addr = cpu_to_le64((u64)dma); sg_arr[0].size = cpu_to_le32(task->total_xfer_len); sg_arr[0].flags |= ASD_SG_EL_LIST_EOL;