Fix another instance of the _dl_random masking bug, plus coding style.

	* sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): Fix
	masking out of the most significant byte of random value used.
	* sysdeps/unix/sysv/linux/dl-osinfo.h (_dl_setup_stack_chk_guard):
	Fix coding style in previous change.

diff --git a/ChangeLog b/ChangeLog
index 2d9dd85..e9ea42a 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2012-03-12  David S. Miller  <davem@davemloft.net>
 
+       * sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): Fix
+       masking out of the most significant byte of random value used.
+       * sysdeps/unix/sysv/linux/dl-osinfo.h (_dl_setup_stack_chk_guard):
+       Fix coding style in previous change.
+
        * sysdeps/unix/sysv/linux/kernel-features.h
        (__ASSUME_CLONE_THREAD_FLAGS): Set on sparc when 2.5.64 and later.
        (__ASSUME_TGKILL): Set on sparc when 2.6.1 and later, simplify

diff --git a/sysdeps/generic/dl-osinfo.h b/sysdeps/generic/dl-osinfo.h
index 548fc46..983cd55 100644 (file)
--- a/sysdeps/generic/dl-osinfo.h
+++ b/sysdeps/generic/dl-osinfo.h
@@ -37,9 +37,9 @@ _dl_setup_stack_chk_guard (void *dl_random)
     {
       memcpy (ret.bytes, dl_random, sizeof (ret));
 #if BYTE_ORDER == LITTLE_ENDIAN
-      ret.num &= ~0xff;
+      ret.num &= ~(uintptr_t) 0xff;
 #elif BYTE_ORDER == BIG_ENDIAN
-      ret.num &= ~(0xff << (8 * (sizeof (ret) - 1)));
+      ret.num &= ~((uintptr_t) 0xff << (8 * (sizeof (ret) - 1)));
 #else
 # error "BYTE_ORDER unknown"
 #endif

diff --git a/sysdeps/unix/sysv/linux/dl-osinfo.h b/sysdeps/unix/sysv/linux/dl-osinfo.h
index 1ff8a2f..d0f41a7 100644 (file)
--- a/sysdeps/unix/sysv/linux/dl-osinfo.h
+++ b/sysdeps/unix/sysv/linux/dl-osinfo.h
@@ -95,9 +95,9 @@ _dl_setup_stack_chk_guard (void *dl_random)
         directly and not use the kernel-provided data to seed a PRNG.  */
       memcpy (ret.bytes, dl_random, sizeof (ret));
 #if BYTE_ORDER == LITTLE_ENDIAN
-      ret.num &= ~(uintptr_t)0xff;
+      ret.num &= ~(uintptr_t) 0xff;
 #elif BYTE_ORDER == BIG_ENDIAN
-      ret.num &= ~((uintptr_t)0xff << (8 * (sizeof (ret) - 1)));
+      ret.num &= ~((uintptr_t) 0xff << (8 * (sizeof (ret) - 1)));
 #else
 # error "BYTE_ORDER unknown"
 #endif