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authorKane Chen <kane.chen@intel.com>2018-03-29 19:12:53 +0800
committerShelley Chen <shchen@google.com>2018-03-30 06:43:12 +0000
commit5b84fad5a9ddbe45d07ea650c74c92e16654af65 (patch)
treedcf5e2804b197c8d846e4556cdec9b473a320566
parentba49c09b2f69f3daccc8a04edfd025f93a4f217c (diff)
soc/intel/skylake: Protect me_progress_rom_values array boundary
me_progress_rom_values array provides detailed information maps to ME HFSTS2 register value. There is a chance that ME status value might be over the size of me_progress_rom_values. This commit adds a check before access the array. BUG=b:77247550 Change-Id: I5de569c62b94b0595d3d3ea254f50e312e8c11a4 Signed-off-by: Kane Chen <kane.chen@intel.com> Reviewed-on: https://review.coreboot.org/25425 Reviewed-by: Kevin Chiu <Kevin.Chiu@quantatw.com> Reviewed-by: Shelley Chen <shchen@google.com> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Marc Jones <marc@marcjonesconsulting.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/soc/intel/skylake/me.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/soc/intel/skylake/me.c b/src/soc/intel/skylake/me.c
index 9a721bced1..a23172e60c 100644
--- a/src/soc/intel/skylake/me.c
+++ b/src/soc/intel/skylake/me.c
@@ -346,8 +346,14 @@ void intel_me_status(void)
printk(BIOS_DEBUG, "ME: Progress Phase State : ");
switch (hfs2.fields.progress_code) {
case ME_HFS2_PHASE_ROM: /* ROM Phase */
- printk(BIOS_DEBUG, "%s",
- me_progress_rom_values[hfs2.fields.current_state]);
+ if (hfs2.fields.current_state
+ < ARRAY_SIZE(me_progress_rom_values)
+ && me_progress_rom_values[hfs2.fields.current_state])
+ printk(BIOS_DEBUG, "%s",
+ me_progress_rom_values[
+ hfs2.fields.current_state]);
+ else
+ printk(BIOS_DEBUG, "0x%02x", hfs2.fields.current_state);
break;
case ME_HFS2_PHASE_UKERNEL: /* uKernel Phase */