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Message-ID: <20120719180405.GA13742@altlinux.org>
Date: Thu, 19 Jul 2012 22:04:05 +0400
From: "Dmitry V. Levin" <ldv@...linux.org>
To: owl-dev@...ts.openwall.com
Subject: Re: strace with restart_syscall output (was: status of 2.6.32-based kernel)
On Thu, Jul 19, 2012 at 08:43:07PM +0400, Vasily Kulikov wrote:
> On Thu, Jul 19, 2012 at 20:22 +0400, Dmitry V. Levin wrote:
> > On Thu, Jul 19, 2012 at 08:13:05PM +0400, Vasily Kulikov wrote:
> > [...]
> > > I've tried some tools a bit like modprobe, ip, nmap, ping, brctl --
> > > everything works, except strace. It shows the same line for every
> > > syscall:
> > >
> > > restart_syscall(<... resuming interrupted call ...>) = 12
> > > restart_syscall(<... resuming interrupted call ...>) = 0
> > > restart_syscall(<... resuming interrupted call ...>) = 0
> > > ...
> >
> > Is it x86 or x86-64? __NR_restart_syscall is 0 on x86.
>
> It is x86
Then most likely it fails to fetch syscall numbers, and if it is the case,
then it also fails to recognize the failure.
Let's have a look at "strace -d /bin/true" output, it may give a clue.
--
ldv
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