DR6_RESERVED and DR_CONTROL_RESERVED are used to clear the set
bits in the "unsigned long" data, make them long to ensure that
"&~" doesn't clear the upper bits.
do_debug() and ptrace_write_dr7() which use DR*_RESERVED look
safe, but probably it makes sense to cleanup anyway.
Reported-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Oleg Nesterov <o...@redhat.com>
---
arch/x86/include/uapi/asm/debugreg.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/uapi/asm/debugreg.h
b/arch/x86/include/uapi/asm/debugreg.h
index 3c0874d..75d07dd 100644
--- a/arch/x86/include/uapi/asm/debugreg.h
+++ b/arch/x86/include/uapi/asm/debugreg.h
@@ -15,7 +15,7 @@
are either reserved or not of interest to us. */
/* Define reserved bits in DR6 which are always set to 1 */
-#define DR6_RESERVED (0xFFFF0FF0)
+#define DR6_RESERVED (0xFFFF0FF0ul)
#define DR_TRAP0 (0x1) /* db0 */
#define DR_TRAP1 (0x2) /* db1 */
@@ -65,7 +65,7 @@
gdt or the ldt if we want to. I am not sure why this is an advantage */
#ifdef __i386__
-#define DR_CONTROL_RESERVED (0xFC00) /* Reserved by Intel */
+#define DR_CONTROL_RESERVED (0xFC00ul) /* Reserved by Intel */
#else
#define DR_CONTROL_RESERVED (0xFFFFFFFF0000FC00UL) /* Reserved */
#endif
--
1.5.5.1
--
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