diff options
| -rw-r--r-- | arch/x86/kernel/ptrace.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index fed83d066135..b71226d653ed 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -32,10 +32,15 @@ /* * Determines which flags the user has access to [1 = access, 0 = no access]. - * Prohibits changing ID(21), VIP(20), VIF(19), VM(17), NT(14), IOPL(12-13), IF(9). - * Also masks reserved bits (31-22, 15, 5, 3, 1). */ -#define FLAG_MASK 0x00050dd5 +#define FLAG_MASK_32 ((unsigned long) \ + (X86_EFLAGS_CF | X86_EFLAGS_PF | \ + X86_EFLAGS_AF | X86_EFLAGS_ZF | \ + X86_EFLAGS_SF | X86_EFLAGS_TF | \ + X86_EFLAGS_DF | X86_EFLAGS_OF | \ + X86_EFLAGS_RF | X86_EFLAGS_AC)) + +#define FLAG_MASK FLAG_MASK_32 static long *pt_regs_access(struct pt_regs *regs, unsigned long regno) { |