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Date: Wed, 27 Apr 2016 21:23:12 +0200 From: Helge Deller <deller@....de> To: "Dmitry V. Levin" <ldv@...linux.org>, "James E.J. Bottomley" <jejb@...isc-linux.org> Cc: Mike Frysinger <vapier@...too.org>, linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls 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@...r.kernel.org > Signed-off-by: Dmitry V. Levin <ldv@...linux.org> Acked-by: Helge Deller <deller@....de> 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 >
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