| commit | 00c6b2d5d7b2414bd46c620d6a8c37fa7a716f29 | [log] [tgz] |
|---|---|---|
| author | Ingo Molnar <mingo@elte.hu> | Fri Apr 25 17:07:03 2008 +0200 |
| committer | Ingo Molnar <mingo@elte.hu> | Fri Apr 25 19:54:07 2008 +0200 |
| tree | 61395a1d6e1665e3f491a0601a6de237b61de194 | |
| parent | b7b66baa8bc3f8e0cda6576e31e9bde09382565d [diff] [blame] |
x86: harden kernel code patching Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 60299f6..65c7857 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c
@@ -519,6 +519,7 @@ pages[1] = vmalloc_to_page(addr + PAGE_SIZE); } else { pages[0] = virt_to_page(addr); + WARN_ON(!PageReserved(pages[0])); pages[1] = virt_to_page(addr + PAGE_SIZE); } BUG_ON(!pages[0]);