diff options
Diffstat (limited to 'arch/x86_64/mm/fault.c')
| -rw-r--r-- | arch/x86_64/mm/fault.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c index 5d6b2114cc9a..493819e543a5 100644 --- a/arch/x86_64/mm/fault.c +++ b/arch/x86_64/mm/fault.c @@ -23,7 +23,6 @@ #include <linux/vt_kern.h> /* For unblank_screen() */ #include <linux/compiler.h> #include <linux/module.h> -#include <linux/kprobes.h> #include <asm/system.h> #include <asm/uaccess.h> @@ -74,7 +73,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr, instr = (unsigned char *)convert_rip_to_linear(current, regs); max_instr = instr + 15; - if ((regs->cs & 3) != 0 && instr >= (unsigned char *)TASK_SIZE) + if (user_mode(regs) && instr >= (unsigned char *)TASK_SIZE) return 0; while (scan_more && instr < max_instr) { @@ -106,7 +105,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr, /* Could check the LDT for lm, but for now it's good enough to assume that long mode only uses well known segments or kernel. */ - scan_more = ((regs->cs & 3) == 0) || (regs->cs == __USER_CS); + scan_more = (!user_mode(regs)) || (regs->cs == __USER_CS); break; case 0x60: @@ -350,7 +349,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code) * (error_code & 4) == 0, and that the fault was not a * protection error (error_code & 1) == 0. */ - if (unlikely(address >= TASK_SIZE)) { + if (unlikely(address >= TASK_SIZE64)) { if (!(error_code & 5) && ((address >= VMALLOC_START && address < VMALLOC_END) || (address >= MODULES_VADDR && address < MODULES_END))) { @@ -440,13 +439,13 @@ good_area: * the fault. */ switch (handle_mm_fault(mm, vma, address, write)) { - case 1: + case VM_FAULT_MINOR: tsk->min_flt++; break; - case 2: + case VM_FAULT_MAJOR: tsk->maj_flt++; break; - case 0: + case VM_FAULT_SIGBUS: goto do_sigbus; default: goto out_of_memory; |