diff options
| author | Liam Girdwood <liam.r.girdwood@linux.intel.com> | 2019-09-27 23:05:36 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-10-01 20:31:53 +0300 |
| commit | ff2be865633e6fa523cd2db3b73197d795dec991 (patch) | |
| tree | 34b7f9d9922ee58a045bba7d8658c4a45829ffe2 /sound/soc/sof/intel/byt.c | |
| parent | 4ff5f6439fe69624e8f7d559915e9b54a6477684 (diff) | |
| download | linux-ff2be865633e6fa523cd2db3b73197d795dec991.tar.xz | |
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>
Diffstat (limited to 'sound/soc/sof/intel/byt.c')
| -rw-r--r-- | sound/soc/sof/intel/byt.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c index 5e7a6aaa627a..a1e514f71739 100644 --- a/sound/soc/sof/intel/byt.c +++ b/sound/soc/sof/intel/byt.c @@ -28,6 +28,7 @@ #define MBOX_OFFSET 0x144000 #define MBOX_SIZE 0x1000 #define EXCEPT_OFFSET 0x800 +#define EXCEPT_MAX_HDR_SIZE 0x400 /* DSP peripherals */ #define DMAC0_OFFSET 0x098000 @@ -126,6 +127,11 @@ static void byt_get_registers(struct snd_sof_dev *sdev, /* note: variable AR register array is not read */ /* then get panic info */ + if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) { + dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n", + xoops->arch_hdr.totalsize); + return; + } offset += xoops->arch_hdr.totalsize; sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info)); |