diff options
| -rw-r--r-- | arch/parisc/kernel/ptrace.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index 90904f9dfc50..927db3668b6f 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -183,10 +183,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) * being 64 bit in both cases. */ -static long translate_usr_offset(long offset) +static compat_ulong_t translate_usr_offset(compat_ulong_t offset) { if (offset < 0) - return -1; + return sizeof(struct pt_regs); else if (offset <= 32*4) /* gr[0..31] */ return offset * 2 + 4; else if (offset <= 32*4+32*8) /* gr[0..31] + fr[0..31] */ @@ -194,7 +194,7 @@ static long translate_usr_offset(long offset) else if (offset < sizeof(struct pt_regs)/2 + 32*4) return offset * 2 + 4 - 32*8; else - return -1; + return sizeof(struct pt_regs); } long compat_arch_ptrace(struct task_struct *child, compat_long_t request, @@ -209,7 +209,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, if (addr & (sizeof(compat_uint_t)-1)) break; addr = translate_usr_offset(addr); - if (addr < 0) + if (addr >= sizeof(struct pt_regs)) break; tmp = *(compat_uint_t *) ((char *) task_regs(child) + addr); @@ -236,7 +236,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, if (addr & (sizeof(compat_uint_t)-1)) break; addr = translate_usr_offset(addr); - if (addr < 0) + if (addr >= sizeof(struct pt_regs)) break; if (addr >= PT_FR0 && addr <= PT_FR31 + 4) { /* Special case, fp regs are 64 bits anyway */ |