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-rw-r--r--arch/x86/kernel/alternative.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 60299f61843f..65c7857a90dd 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -519,6 +519,7 @@ void *__kprobes text_poke(void *addr, const void *opcode, size_t len)
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]);