diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/kernel/ptrace.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c index d35ec1bc696a..3a52c7bcfd12 100644 --- a/arch/x86_64/kernel/ptrace.c +++ b/arch/x86_64/kernel/ptrace.c | |||
| @@ -141,8 +141,11 @@ static int is_at_popf(struct task_struct *child, struct pt_regs *regs) | |||
| 141 | case 0xf0: case 0xf2: case 0xf3: | 141 | case 0xf0: case 0xf2: case 0xf3: |
| 142 | continue; | 142 | continue; |
| 143 | 143 | ||
| 144 | /* REX prefixes */ | ||
| 145 | case 0x40 ... 0x4f: | 144 | case 0x40 ... 0x4f: |
| 145 | if (regs->cs != __USER_CS) | ||
| 146 | /* 32-bit mode: register increment */ | ||
| 147 | return 0; | ||
| 148 | /* 64-bit mode: REX prefix */ | ||
| 146 | continue; | 149 | continue; |
| 147 | 150 | ||
| 148 | /* CHECKME: f0, f2, f3 */ | 151 | /* CHECKME: f0, f2, f3 */ |