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amd64_edac: Beef up early exit reporting 

Add paranoid checks for the sys address before going off and decoding
it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
This commit is contained in:
Borislav Petkov 2011-01-17 13:03:26 +01:00
parent 614ec9d853
commit 355fba6005
1 changed files with 13 additions and 2 deletions
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15
drivers/edac/amd64_edac.c
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@ -1380,9 +1380,20 @@ static int f10_match_to_this_node(struct amd64_pvt *pvt, int range,
debugf1("(range %d) SystemAddr= 0x%llx Limit=0x%llx\n",
range, sys_addr, get_dram_limit(pvt, range));
if (intlv_en &&
(intlv_sel != ((sys_addr >> 12) & intlv_en)))
if (dhar_valid(pvt) &&
dhar_base(pvt) <= sys_addr &&
sys_addr < BIT_64(32)) {
amd64_warn("Huh? Address is in the MMIO hole: 0x%016llx\n",
sys_addr);
return -EINVAL;
}
if (intlv_en &&
(intlv_sel != ((sys_addr >> 12) & intlv_en))) {
amd64_warn("Botched intlv bits, en: 0x%x, sel: 0x%x\n",
intlv_en, intlv_sel);
return -EINVAL;
}
sys_addr = f10_swap_interleaved_region(pvt, sys_addr);