Re: [PATCH RFC 4/6] Fix places where using %gs changes the usermode ABI.

> ===================================================================
> --- a/arch/i386/kernel/ptrace.c
> +++ b/arch/i386/kernel/ptrace.c
> @@ -94,13 +94,9 @@ static int putreg(struct task_struct *ch
>  				return -EIO;
>  			child->thread.fs = value;
>  			return 0;
> -		case GS:
> -			if (value && (value & 3) != 3)
> -				return -EIO;
> -			child->thread.gs = value;
> -			return 0;
>  		case DS:
>  		case ES:
> +		case GS:
>  			if (value && (value & 3) != 3)
>  				return -EIO;
>  			value &= 0xffff;
> @@ -132,8 +128,6 @@ static unsigned long getreg(struct task_
>  			retval = child->thread.fs;
>  			break;
>  		case GS:
> -			retval = child->thread.gs;
> -			break;

Didn't the eip/esp offsets change too?

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [PATCH RFC 4/6] Fix places where using %gs changes the usermode ABI.
    • From: Jeremy Fitzhardinge <[email protected]>

• References:
  • [PATCH RFC 0/6] Implement per-processor data areas for i386.
    • From: Jeremy Fitzhardinge <[email protected]>
  • [PATCH RFC 4/6] Fix places where using %gs changes the usermode ABI.
    • From: Jeremy Fitzhardinge <[email protected]>

• Prev by Date: Re: [PATCH RFC 6/6] Implement "current" with the PDA.
• Next by Date: Re: [PATCH RFC 0/6] Implement per-processor data areas for i386.
• Previous by thread: [PATCH RFC 4/6] Fix places where using %gs changes the usermode ABI.
• Next by thread: Re: [PATCH RFC 4/6] Fix places where using %gs changes the usermode ABI.
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]