From mboxrd@z Thu Jan 1 00:00:00 1970 From: Helge Deller Subject: Re: [PATCH] parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls Date: Wed, 27 Apr 2016 21:23:12 +0200 Message-ID: <572111A0.706@gmx.de> References: <20160427015611.GA23316@altlinux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Cc: Mike Frysinger , linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org To: "Dmitry V. Levin" , "James E.J. Bottomley" Return-path: In-Reply-To: <20160427015611.GA23316@altlinux.org> List-ID: List-Id: linux-parisc.vger.kernel.org On 27.04.2016 03:56, Dmitry V. Levin wrote: > Do not load one entry beyond the end of the syscall table when the > syscall number of a traced process equals to __NR_Linux_syscalls. > Similar bug with regular processes was fixed by commit 3bb457af4fa8 > ("[PARISC] Fix bug when syscall nr is __NR_Linux_syscalls"). > > This bug was found by strace test suite. > > Cc: stable@vger.kernel.org > Signed-off-by: Dmitry V. Levin Acked-by: Helge Deller Thanks! Helge > --- > arch/parisc/kernel/syscall.S | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S > index c976ebf..57b4836 100644 > --- a/arch/parisc/kernel/syscall.S > +++ b/arch/parisc/kernel/syscall.S > @@ -344,7 +344,7 @@ tracesys_next: > #endif > > cmpib,COND(=),n -1,%r20,tracesys_exit /* seccomp may have returned -1 */ > - comiclr,>>= __NR_Linux_syscalls, %r20, %r0 > + comiclr,>> __NR_Linux_syscalls, %r20, %r0 > b,n .Ltracesys_nosys > > LDREGX %r20(%r19), %r19 >