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| author | Yinghai Lu <yinghai@kernel.org> | 2009-03-14 14:32:41 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-15 07:03:15 +0100 |
| commit | 6d7942dc2a70a7e74c352107b150265602671588 (patch) | |
| tree | f7df27a6e206061fcdecf2df71e46824098386b7 /arch | |
| parent | 78a8b35bc7abf8b8333d6f625e08c0f7cc1c3742 (diff) | |
| download | linux-6d7942dc2a70a7e74c352107b150265602671588.tar.gz linux-6d7942dc2a70a7e74c352107b150265602671588.tar.bz2 linux-6d7942dc2a70a7e74c352107b150265602671588.zip | |
x86: fix 64k corruption-check
Impact: fix boot crash
Need to exit early if the addr is far above 64k.
The crash got exposed by:
78a8b35: x86: make e820_update_range() handle small range update
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: <stable@kernel.org>
LKML-Reference: <49BC2279.2030101@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/check.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/check.c b/arch/x86/kernel/check.c index b617b1164f1e..fc999e6fc46a 100644 --- a/arch/x86/kernel/check.c +++ b/arch/x86/kernel/check.c @@ -86,12 +86,12 @@ void __init setup_bios_corruption_check(void) if (!(addr + 1)) break; + if (addr >= corruption_check_size) + break; + if ((addr + size) > corruption_check_size) size = corruption_check_size - addr; - if (size == 0) - break; - e820_update_range(addr, size, E820_RAM, E820_RESERVED); scan_areas[num_scan_areas].addr = addr; scan_areas[num_scan_areas].size = size; |