diff options
Diffstat (limited to 'poky/meta/recipes-bsp/grub/files/calloc-Make-sure-we-always-have-an-overflow-checking.patch')
-rw-r--r-- | poky/meta/recipes-bsp/grub/files/calloc-Make-sure-we-always-have-an-overflow-checking.patch | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/poky/meta/recipes-bsp/grub/files/calloc-Make-sure-we-always-have-an-overflow-checking.patch b/poky/meta/recipes-bsp/grub/files/calloc-Make-sure-we-always-have-an-overflow-checking.patch deleted file mode 100644 index c9536e68e..000000000 --- a/poky/meta/recipes-bsp/grub/files/calloc-Make-sure-we-always-have-an-overflow-checking.patch +++ /dev/null @@ -1,246 +0,0 @@ -From c005f62f5c4b26a77b916c8f76a852324439ecb3 Mon Sep 17 00:00:00 2001 -From: Peter Jones <pjones@redhat.com> -Date: Mon, 15 Jun 2020 12:15:29 -0400 -Subject: [PATCH 2/9] calloc: Make sure we always have an overflow-checking - calloc() available - -This tries to make sure that everywhere in this source tree, we always have -an appropriate version of calloc() (i.e. grub_calloc(), xcalloc(), etc.) -available, and that they all safely check for overflow and return NULL when -it would occur. - -Upstream-Status: Backport [commit 64e26162ebfe68317c143ca5ec996c892019f8f8 -from https://git.savannah.gnu.org/git/grub.git] - -Signed-off-by: Peter Jones <pjones@redhat.com> -Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> -Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com> ---- - grub-core/kern/emu/misc.c | 12 ++++++++++++ - grub-core/kern/emu/mm.c | 10 ++++++++++ - grub-core/kern/mm.c | 40 ++++++++++++++++++++++++++++++++++++++ - grub-core/lib/libgcrypt_wrap/mem.c | 11 +++++++++-- - grub-core/lib/posix_wrap/stdlib.h | 8 +++++++- - include/grub/emu/misc.h | 1 + - include/grub/mm.h | 6 ++++++ - 7 files changed, 85 insertions(+), 3 deletions(-) - -diff --git a/grub-core/kern/emu/misc.c b/grub-core/kern/emu/misc.c -index 65db79b..dfd8a8e 100644 ---- a/grub-core/kern/emu/misc.c -+++ b/grub-core/kern/emu/misc.c -@@ -85,6 +85,18 @@ grub_util_error (const char *fmt, ...) - exit (1); - } - -+void * -+xcalloc (grub_size_t nmemb, grub_size_t size) -+{ -+ void *p; -+ -+ p = calloc (nmemb, size); -+ if (!p) -+ grub_util_error ("%s", _("out of memory")); -+ -+ return p; -+} -+ - void * - xmalloc (grub_size_t size) - { -diff --git a/grub-core/kern/emu/mm.c b/grub-core/kern/emu/mm.c -index f262e95..145b01d 100644 ---- a/grub-core/kern/emu/mm.c -+++ b/grub-core/kern/emu/mm.c -@@ -25,6 +25,16 @@ - #include <string.h> - #include <grub/i18n.h> - -+void * -+grub_calloc (grub_size_t nmemb, grub_size_t size) -+{ -+ void *ret; -+ ret = calloc (nmemb, size); -+ if (!ret) -+ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory")); -+ return ret; -+} -+ - void * - grub_malloc (grub_size_t size) - { -diff --git a/grub-core/kern/mm.c b/grub-core/kern/mm.c -index ee88ff6..f2822a8 100644 ---- a/grub-core/kern/mm.c -+++ b/grub-core/kern/mm.c -@@ -67,8 +67,10 @@ - #include <grub/dl.h> - #include <grub/i18n.h> - #include <grub/mm_private.h> -+#include <grub/safemath.h> - - #ifdef MM_DEBUG -+# undef grub_calloc - # undef grub_malloc - # undef grub_zalloc - # undef grub_realloc -@@ -375,6 +377,30 @@ grub_memalign (grub_size_t align, grub_size_t size) - return 0; - } - -+/* -+ * Allocate NMEMB instances of SIZE bytes and return the pointer, or error on -+ * integer overflow. -+ */ -+void * -+grub_calloc (grub_size_t nmemb, grub_size_t size) -+{ -+ void *ret; -+ grub_size_t sz = 0; -+ -+ if (grub_mul (nmemb, size, &sz)) -+ { -+ grub_error (GRUB_ERR_OUT_OF_RANGE, N_("overflow is detected")); -+ return NULL; -+ } -+ -+ ret = grub_memalign (0, sz); -+ if (!ret) -+ return NULL; -+ -+ grub_memset (ret, 0, sz); -+ return ret; -+} -+ - /* Allocate SIZE bytes and return the pointer. */ - void * - grub_malloc (grub_size_t size) -@@ -561,6 +587,20 @@ grub_mm_dump (unsigned lineno) - grub_printf ("\n"); - } - -+void * -+grub_debug_calloc (const char *file, int line, grub_size_t nmemb, grub_size_t size) -+{ -+ void *ptr; -+ -+ if (grub_mm_debug) -+ grub_printf ("%s:%d: calloc (0x%" PRIxGRUB_SIZE ", 0x%" PRIxGRUB_SIZE ") = ", -+ file, line, size); -+ ptr = grub_calloc (nmemb, size); -+ if (grub_mm_debug) -+ grub_printf ("%p\n", ptr); -+ return ptr; -+} -+ - void * - grub_debug_malloc (const char *file, int line, grub_size_t size) - { -diff --git a/grub-core/lib/libgcrypt_wrap/mem.c b/grub-core/lib/libgcrypt_wrap/mem.c -index beeb661..74c6eaf 100644 ---- a/grub-core/lib/libgcrypt_wrap/mem.c -+++ b/grub-core/lib/libgcrypt_wrap/mem.c -@@ -4,6 +4,7 @@ - #include <grub/crypto.h> - #include <grub/dl.h> - #include <grub/env.h> -+#include <grub/safemath.h> - - GRUB_MOD_LICENSE ("GPLv3+"); - -@@ -36,7 +37,10 @@ void * - gcry_xcalloc (size_t n, size_t m) - { - void *ret; -- ret = grub_zalloc (n * m); -+ size_t sz; -+ if (grub_mul (n, m, &sz)) -+ grub_fatal ("gcry_xcalloc would overflow"); -+ ret = grub_zalloc (sz); - if (!ret) - grub_fatal ("gcry_xcalloc failed"); - return ret; -@@ -56,7 +60,10 @@ void * - gcry_xcalloc_secure (size_t n, size_t m) - { - void *ret; -- ret = grub_zalloc (n * m); -+ size_t sz; -+ if (grub_mul (n, m, &sz)) -+ grub_fatal ("gcry_xcalloc would overflow"); -+ ret = grub_zalloc (sz); - if (!ret) - grub_fatal ("gcry_xcalloc failed"); - return ret; -diff --git a/grub-core/lib/posix_wrap/stdlib.h b/grub-core/lib/posix_wrap/stdlib.h -index 3b46f47..7a8d385 100644 ---- a/grub-core/lib/posix_wrap/stdlib.h -+++ b/grub-core/lib/posix_wrap/stdlib.h -@@ -21,6 +21,7 @@ - - #include <grub/mm.h> - #include <grub/misc.h> -+#include <grub/safemath.h> - - static inline void - free (void *ptr) -@@ -37,7 +38,12 @@ malloc (grub_size_t size) - static inline void * - calloc (grub_size_t size, grub_size_t nelem) - { -- return grub_zalloc (size * nelem); -+ grub_size_t sz; -+ -+ if (grub_mul (size, nelem, &sz)) -+ return NULL; -+ -+ return grub_zalloc (sz); - } - - static inline void * -diff --git a/include/grub/emu/misc.h b/include/grub/emu/misc.h -index ce464cf..ff9c48a 100644 ---- a/include/grub/emu/misc.h -+++ b/include/grub/emu/misc.h -@@ -47,6 +47,7 @@ grub_util_device_is_mapped (const char *dev); - #define GRUB_HOST_PRIuLONG_LONG "llu" - #define GRUB_HOST_PRIxLONG_LONG "llx" - -+void * EXPORT_FUNC(xcalloc) (grub_size_t nmemb, grub_size_t size) WARN_UNUSED_RESULT; - void * EXPORT_FUNC(xmalloc) (grub_size_t size) WARN_UNUSED_RESULT; - void * EXPORT_FUNC(xrealloc) (void *ptr, grub_size_t size) WARN_UNUSED_RESULT; - char * EXPORT_FUNC(xstrdup) (const char *str) WARN_UNUSED_RESULT; -diff --git a/include/grub/mm.h b/include/grub/mm.h -index 28e2e53..9c38dd3 100644 ---- a/include/grub/mm.h -+++ b/include/grub/mm.h -@@ -29,6 +29,7 @@ - #endif - - void grub_mm_init_region (void *addr, grub_size_t size); -+void *EXPORT_FUNC(grub_calloc) (grub_size_t nmemb, grub_size_t size); - void *EXPORT_FUNC(grub_malloc) (grub_size_t size); - void *EXPORT_FUNC(grub_zalloc) (grub_size_t size); - void EXPORT_FUNC(grub_free) (void *ptr); -@@ -48,6 +49,9 @@ extern int EXPORT_VAR(grub_mm_debug); - void grub_mm_dump_free (void); - void grub_mm_dump (unsigned lineno); - -+#define grub_calloc(nmemb, size) \ -+ grub_debug_calloc (GRUB_FILE, __LINE__, nmemb, size) -+ - #define grub_malloc(size) \ - grub_debug_malloc (GRUB_FILE, __LINE__, size) - -@@ -63,6 +67,8 @@ void grub_mm_dump (unsigned lineno); - #define grub_free(ptr) \ - grub_debug_free (GRUB_FILE, __LINE__, ptr) - -+void *EXPORT_FUNC(grub_debug_calloc) (const char *file, int line, -+ grub_size_t nmemb, grub_size_t size); - void *EXPORT_FUNC(grub_debug_malloc) (const char *file, int line, - grub_size_t size); - void *EXPORT_FUNC(grub_debug_zalloc) (const char *file, int line, --- -2.14.4 - |