linux-kernel - Re: [PATCH v4 03/15] h8300: Exception and Interrupt handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87y4nq31t0.wl-ysato@users.sourceforge.jp>
Date:	Sun, 22 Feb 2015 15:20:11 +0900
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH v4 03/15] h8300: Exception and Interrupt handling

At Sat, 21 Feb 2015 09:58:04 +0000,
Al Viro wrote:
> 
> On Sat, Feb 21, 2015 at 04:53:47PM +0900, Yoshinori Sato wrote:
> 
> > +resume_userspace:
> > +	andc	#0xbf,ccr
> > +	mov.l	sp,er4
> > +	and.w	#0xe000,r4		/* er4 <- current thread info */
> > +	mov.l	@(TI_FLAGS:16,er4),er1
> > +	and.l	#_TIF_WORK_MASK,er1
> > +	beq	restore_all:8
> > +work_pending:
> > +	btst	#TIF_NEED_RESCHED,r1l
> > +	bne	work_resched:8
> > +	/* work notifysig */
> > +	mov.l	sp,er0
> > +	subs	#4,er0			/* er0: pt_regs */
> > +	jsr	@do_notify_resume
> > +	bra	restore_all:8
> 
> This is wrong.  You really need to handle multiple signals; it ought to
> reload er1 and recheck it (or just branch to resume_userspace instead)

OK.
Fixed.

-- 
Yoshinori Sato
<ysato@...rs.sourceforge.jp>
--
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/