diff --git a/[refs] b/[refs] index 77232f4d6da0..34a12378a104 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: a57dae3aa4d00a000b5bac4238025438204c78b2 +refs/heads/master: 984bb80d94d891592ab16d4d129b988792752c7b diff --git a/trunk/arch/x86/kernel/test_nx.c b/trunk/arch/x86/kernel/test_nx.c index 36c100c323aa..10b8a6f69f84 100644 --- a/trunk/arch/x86/kernel/test_nx.c +++ b/trunk/arch/x86/kernel/test_nx.c @@ -139,7 +139,6 @@ static int test_NX(void) * Until then, don't run them to avoid too many people getting scared * by the error message */ -#if 0 #ifdef CONFIG_DEBUG_RODATA /* Test 3: Check if the .rodata section is executable */ @@ -152,6 +151,7 @@ static int test_NX(void) } #endif +#if 0 /* Test 4: Check if the .data section of a module is executable */ if (test_address(&test_data)) { printk(KERN_ERR "test_nx: .data section is executable\n"); diff --git a/trunk/arch/x86/mm/init_64.c b/trunk/arch/x86/mm/init_64.c index 3a98d6f724ab..9b61c75a2355 100644 --- a/trunk/arch/x86/mm/init_64.c +++ b/trunk/arch/x86/mm/init_64.c @@ -591,10 +591,17 @@ void mark_rodata_ro(void) if (end <= start) return; - set_memory_ro(start, (end - start) >> PAGE_SHIFT); printk(KERN_INFO "Write protecting the kernel read-only data: %luk\n", (end - start) >> 10); + set_memory_ro(start, (end - start) >> PAGE_SHIFT); + + /* + * The rodata section (but not the kernel text!) should also be + * not-executable. + */ + start = ((unsigned long)__start_rodata + PAGE_SIZE - 1) & PAGE_MASK; + set_memory_nx(start, (end - start) >> PAGE_SHIFT); rodata_test();