Attachment 206251 Details for Bug 254024 – Attempt to extract syscall exit fix from 2.6.20 kernel

[patch] Attempt to extract syscall exit fix from 2.6.20 kernel

patch-2.6.20-vm86-audit-syscall-exit.patch (text/plain), 981 bytes, created by wdc on 2007-09-25 23:20:15 UTC

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Creator: wdc

Created: 2007-09-25 23:20:15 UTC

Size: 981 bytes

patch

obsolete

>diff --git a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c
>--- a/arch/i386/kernel/vm86.c
>+++ b/arch/i386/kernel/vm86.c
>@@ -306,19 +334,18 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
> 	tsk->thread.screen_bitmap = info->screen_bitmap;
> 	if (info->flags & VM86_SCREEN_BITMAP)
> 		mark_screen_rdonly(tsk->mm);
>-	__asm__ __volatile__("xorl %eax,%eax; movl %eax,%fs; movl %eax,%gs\n\t");
>-	__asm__ __volatile__("movl %%eax, %0\n" :"=r"(eax));
> 
> 	/*call audit_syscall_exit since we do not exit via the normal paths */
> 	if (unlikely(current->audit_context))
>-		audit_syscall_exit(AUDITSC_RESULT(eax), eax);
>+		audit_syscall_exit(AUDITSC_RESULT(0), 0);
> 
> 	__asm__ __volatile__(
> 		"movl %0,%%esp\n\t"
> 		"movl %1,%%ebp\n\t"
>+		"mov  %2, %%fs\n\t"
> 		"jmp resume_userspace"
> 		: /* no outputs */
>-		:"r" (&info->regs), "r" (task_thread_info(tsk)));
>+		:"r" (&info->regs), "r" (task_thread_info(tsk)), "r" (0));
> 	/* we never return here */
> }
>

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