ASoC: SOF: Intel: initialise and verify FW crash dump data.
FW mailbox offset was not set before use and HDR size was not validated. Fix this. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190927200538.660-12-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -37,6 +37,7 @@
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#define MBOX_SIZE 0x1000
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#define MBOX_DUMP_SIZE 0x30
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#define EXCEPT_OFFSET 0x800
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#define EXCEPT_MAX_HDR_SIZE 0x400
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/* DSP peripherals */
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#define DMAC0_OFFSET 0xFE000
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@ -228,6 +229,11 @@ static void bdw_get_registers(struct snd_sof_dev *sdev,
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/* note: variable AR register array is not read */
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/* then get panic info */
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if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
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dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
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xoops->arch_hdr.totalsize);
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return;
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}
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offset += xoops->arch_hdr.totalsize;
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sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
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@ -451,6 +457,7 @@ static int bdw_probe(struct snd_sof_dev *sdev)
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/* TODO: add offsets */
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sdev->mmio_bar = BDW_DSP_BAR;
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sdev->mailbox_bar = BDW_DSP_BAR;
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sdev->dsp_oops_offset = MBOX_OFFSET;
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/* PCI base */
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mmio = platform_get_resource(pdev, IORESOURCE_MEM,
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@ -28,6 +28,7 @@
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#define MBOX_OFFSET 0x144000
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#define MBOX_SIZE 0x1000
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#define EXCEPT_OFFSET 0x800
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#define EXCEPT_MAX_HDR_SIZE 0x400
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/* DSP peripherals */
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#define DMAC0_OFFSET 0x098000
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@ -126,6 +127,11 @@ static void byt_get_registers(struct snd_sof_dev *sdev,
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/* note: variable AR register array is not read */
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/* then get panic info */
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if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
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dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
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xoops->arch_hdr.totalsize);
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return;
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}
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offset += xoops->arch_hdr.totalsize;
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sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
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@ -35,6 +35,8 @@
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#define IS_CFL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa348)
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#define IS_CNL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9dc8)
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#define EXCEPT_MAX_HDR_SIZE 0x400
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/*
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* Debug
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*/
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@ -131,6 +133,11 @@ static void hda_dsp_get_registers(struct snd_sof_dev *sdev,
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/* note: variable AR register array is not read */
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/* then get panic info */
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if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
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dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
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xoops->arch_hdr.totalsize);
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return;
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}
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offset += xoops->arch_hdr.totalsize;
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sof_block_read(sdev, sdev->mmio_bar, offset,
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panic_info, sizeof(*panic_info));
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