diff options
Diffstat (limited to 'drivers/misc/lkdtm')
| -rw-r--r-- | drivers/misc/lkdtm/Makefile | 2 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/cfi.c | 2 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/fortify.c | 6 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/kstack_erase.c (renamed from drivers/misc/lkdtm/stackleak.c) | 26 |
4 files changed, 21 insertions, 15 deletions
diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile index 39468bd27b85..03ebe33185f9 100644 --- a/drivers/misc/lkdtm/Makefile +++ b/drivers/misc/lkdtm/Makefile @@ -8,7 +8,7 @@ lkdtm-$(CONFIG_LKDTM) += perms.o lkdtm-$(CONFIG_LKDTM) += refcount.o lkdtm-$(CONFIG_LKDTM) += rodata_objcopy.o lkdtm-$(CONFIG_LKDTM) += usercopy.o -lkdtm-$(CONFIG_LKDTM) += stackleak.o +lkdtm-$(CONFIG_LKDTM) += kstack_erase.o lkdtm-$(CONFIG_LKDTM) += cfi.o lkdtm-$(CONFIG_LKDTM) += fortify.o lkdtm-$(CONFIG_PPC_64S_HASH_MMU) += powerpc.o diff --git a/drivers/misc/lkdtm/cfi.c b/drivers/misc/lkdtm/cfi.c index 6a33889d0902..c3971f7caa65 100644 --- a/drivers/misc/lkdtm/cfi.c +++ b/drivers/misc/lkdtm/cfi.c @@ -43,7 +43,7 @@ static void lkdtm_CFI_FORWARD_PROTO(void) lkdtm_indirect_call((void *)lkdtm_increment_int); pr_err("FAIL: survived mismatched prototype function call!\n"); - pr_expected_config(CONFIG_CFI_CLANG); + pr_expected_config(CONFIG_CFI); } /* diff --git a/drivers/misc/lkdtm/fortify.c b/drivers/misc/lkdtm/fortify.c index 015927665678..00ed2147113e 100644 --- a/drivers/misc/lkdtm/fortify.c +++ b/drivers/misc/lkdtm/fortify.c @@ -44,6 +44,9 @@ static void lkdtm_FORTIFY_STR_MEMBER(void) char *src; src = kmalloc(size, GFP_KERNEL); + if (!src) + return; + strscpy(src, "over ten bytes", size); size = strlen(src) + 1; @@ -109,6 +112,9 @@ static void lkdtm_FORTIFY_MEM_MEMBER(void) char *src; src = kmalloc(size, GFP_KERNEL); + if (!src) + return; + strscpy(src, "over ten bytes", size); size = strlen(src) + 1; diff --git a/drivers/misc/lkdtm/stackleak.c b/drivers/misc/lkdtm/kstack_erase.c index f1d022160913..4fd9b0bfb874 100644 --- a/drivers/misc/lkdtm/stackleak.c +++ b/drivers/misc/lkdtm/kstack_erase.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* * This code tests that the current task stack is properly erased (filled - * with STACKLEAK_POISON). + * with KSTACK_ERASE_POISON). * * Authors: * Alexander Popov <alex.popov@linux.com> @@ -9,9 +9,9 @@ */ #include "lkdtm.h" -#include <linux/stackleak.h> +#include <linux/kstack_erase.h> -#if defined(CONFIG_GCC_PLUGIN_STACKLEAK) +#if defined(CONFIG_KSTACK_ERASE) /* * Check that stackleak tracks the lowest stack pointer and erases the stack * below this as expected. @@ -85,7 +85,7 @@ static void noinstr check_stackleak_irqoff(void) while (poison_low > task_stack_low) { poison_low -= sizeof(unsigned long); - if (*(unsigned long *)poison_low == STACKLEAK_POISON) + if (*(unsigned long *)poison_low == KSTACK_ERASE_POISON) continue; instrumentation_begin(); @@ -96,7 +96,7 @@ static void noinstr check_stackleak_irqoff(void) } instrumentation_begin(); - pr_info("stackleak stack usage:\n" + pr_info("kstack erase stack usage:\n" " high offset: %lu bytes\n" " current: %lu bytes\n" " lowest: %lu bytes\n" @@ -121,7 +121,7 @@ out: instrumentation_end(); } -static void lkdtm_STACKLEAK_ERASING(void) +static void lkdtm_KSTACK_ERASE(void) { unsigned long flags; @@ -129,19 +129,19 @@ static void lkdtm_STACKLEAK_ERASING(void) check_stackleak_irqoff(); local_irq_restore(flags); } -#else /* defined(CONFIG_GCC_PLUGIN_STACKLEAK) */ -static void lkdtm_STACKLEAK_ERASING(void) +#else /* defined(CONFIG_KSTACK_ERASE) */ +static void lkdtm_KSTACK_ERASE(void) { - if (IS_ENABLED(CONFIG_HAVE_ARCH_STACKLEAK)) { - pr_err("XFAIL: stackleak is not enabled (CONFIG_GCC_PLUGIN_STACKLEAK=n)\n"); + if (IS_ENABLED(CONFIG_HAVE_ARCH_KSTACK_ERASE)) { + pr_err("XFAIL: stackleak is not enabled (CONFIG_KSTACK_ERASE=n)\n"); } else { - pr_err("XFAIL: stackleak is not supported on this arch (HAVE_ARCH_STACKLEAK=n)\n"); + pr_err("XFAIL: stackleak is not supported on this arch (HAVE_ARCH_KSTACK_ERASE=n)\n"); } } -#endif /* defined(CONFIG_GCC_PLUGIN_STACKLEAK) */ +#endif /* defined(CONFIG_KSTACK_ERASE) */ static struct crashtype crashtypes[] = { - CRASHTYPE(STACKLEAK_ERASING), + CRASHTYPE(KSTACK_ERASE), }; struct crashtype_category stackleak_crashtypes = { |