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Date: Thu, 19 Jul 2007 17:42:38 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Diego Woitasen <diego@...tasen.com.ar> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] Use the tsk argument in init_new_context() On Sun, 8 Jul 2007 22:55:08 -0300 Diego Woitasen <diego@...tasen.com.ar> wrote: > Signed-off-by: Diego Woitasen <diego@...tasen.com.ar> > --- > arch/i386/kernel/ldt.c | 2 +- > arch/x86_64/kernel/ldt.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/i386/kernel/ldt.c b/arch/i386/kernel/ldt.c > index e0b2d17..c2eb4fb 100644 > --- a/arch/i386/kernel/ldt.c > +++ b/arch/i386/kernel/ldt.c > @@ -96,7 +96,7 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) > > init_MUTEX(&mm->context.sem); > mm->context.size = 0; > - old_mm = current->mm; > + old_mm = tsk->mm; > if (old_mm && old_mm->context.size > 0) { > down(&old_mm->context.sem); > retval = copy_ldt(&mm->context, &old_mm->context); > diff --git a/arch/x86_64/kernel/ldt.c b/arch/x86_64/kernel/ldt.c > index bc9ffd5..99a92ed 100644 > --- a/arch/x86_64/kernel/ldt.c > +++ b/arch/x86_64/kernel/ldt.c > @@ -100,7 +100,7 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) > > init_MUTEX(&mm->context.sem); > mm->context.size = 0; > - old_mm = current->mm; > + old_mm = tsk->mm; > if (old_mm && old_mm->context.size > 0) { > down(&old_mm->context.sem); > retval = copy_ldt(&mm->context, &old_mm->context); When called from dup_mm(), `tsk' refers to the new task and `current' refers to the old one. I'd have expected this to crash during your testing? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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