900d308e44
commit c43ec96e8d34399bd9dab2f2dc316b904892133f upstream.
The at_xdmac_memset_create_desc may return NULL, which will lead to a
null pointer dereference. For example, the len input is error, or the
atchan->free_descs_list is empty and memory is exhausted. Therefore, add
check to avoid this.
Fixes: b206d9a23ac7 ("dmaengine: xdmac: Add memset support")
Signed-off-by: Chen Ridong <chenridong@huawei.com>
Link: https://lore.kernel.org/r/20241029082845.1185380-1-chenridong@huaweicloud.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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|---|---|---|
| .. | ||
| bestcomm | ||
| dw | ||
| dw-axi-dmac | ||
| dw-edma | ||
| fsl-dpaa2-qdma | ||
| hsu | ||
| idxd | ||
| ioat | ||
| ipu | ||
| mediatek | ||
| ppc4xx | ||
| qcom | ||
| sf-pdma | ||
| sh | ||
| ti | ||
| xilinx | ||
| acpi-dma.c | ||
| altera-msgdma.c | ||
| amba-pl08x.c | ||
| at_hdmac.c | ||
| at_hdmac_regs.h | ||
| at_xdmac.c | ||
| bcm-sba-raid.c | ||
| bcm2835-dma.c | ||
| coh901318.c | ||
| coh901318.h | ||
| coh901318_lli.c | ||
| dma-axi-dmac.c | ||
| dma-jz4780.c | ||
| dmaengine.c | ||
| dmaengine.h | ||
| dmatest.c | ||
| ep93xx_dma.c | ||
| fsl-edma-common.c | ||
| fsl-edma-common.h | ||
| fsl-edma.c | ||
| fsl-qdma.c | ||
| fsl_raid.c | ||
| fsl_raid.h | ||
| fsldma.c | ||
| fsldma.h | ||
| hisi_dma.c | ||
| idma64.c | ||
| idma64.h | ||
| img-mdc-dma.c | ||
| imx-dma.c | ||
| imx-sdma.c | ||
| iop-adma.c | ||
| iop-adma.h | ||
| k3dma.c | ||
| Kconfig | ||
| lpc18xx-dmamux.c | ||
| Makefile | ||
| mcf-edma.c | ||
| milbeaut-hdmac.c | ||
| milbeaut-xdmac.c | ||
| mmp_pdma.c | ||
| mmp_tdma.c | ||
| moxart-dma.c | ||
| mpc512x_dma.c | ||
| mv_xor.c | ||
| mv_xor.h | ||
| mv_xor_v2.c | ||
| mxs-dma.c | ||
| nbpfaxi.c | ||
| of-dma.c | ||
| owl-dma.c | ||
| pch_dma.c | ||
| pl330.c | ||
| plx_dma.c | ||
| pxa_dma.c | ||
| s3c24xx-dma.c | ||
| sa11x0-dma.c | ||
| samsung-dma.c | ||
| sirf-dma.c | ||
| sprd-dma.c | ||
| st_fdma.c | ||
| st_fdma.h | ||
| ste_dma40.c | ||
| ste_dma40_ll.c | ||
| ste_dma40_ll.h | ||
| stm32-dma.c | ||
| stm32-dmamux.c | ||
| stm32-mdma.c | ||
| sun4i-dma.c | ||
| sun6i-dma.c | ||
| tegra20-apb-dma.c | ||
| tegra210-adma.c | ||
| timb_dma.c | ||
| TODO | ||
| txx9dmac.c | ||
| txx9dmac.h | ||
| uniphier-mdmac.c | ||
| uniphier-xdmac.c | ||
| virt-dma.c | ||
| virt-dma.h | ||
| xgene-dma.c | ||
| zx_dma.c | ||