Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 19 Jul 2012 22:44:18 +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 10:11:17PM +0400, Vasily Kulikov wrote:
> root@...alhost:~ # strace -d /bin/true
> ptrace_setoptions = 0x11
> new tcb for pid 1302, active tcbs:1
>  [wait(0x137f) = 1302] WIFSTOPPED,sig=SIGSTOP
> pid 1302 has TCB_STARTUP, initializing it
> setting opts 11 on pid 1302
> ignored SIGSTOP on pid 1302
>  [wait(0x857f) = 1302] WIFSTOPPED,sig=133
> restart_syscall(<... resuming interrupted call ...> [wait(0x4057f) = 1302] WIFSTOPPED,sig=SIGTRAP,PTRACE_EVENT_EXEC
>  [wait(0x857f) = 1302] WIFSTOPPED,sig=133
> ) = 0
>  [wait(0x857f) = 1302] WIFSTOPPED,sig=133
> restart_syscall(<... resuming interrupted call ...> [wait(0x0000) = 1302] WIFEXITED,exitcode=0
>  <unfinished ...>
> +++ exited with 0 +++
> dropped tcb for pid 1302, 0 remain
> root@...alhost:~ #

Either PTRACE_GETREGS doesn't work or struct pt_regs defined in
<asm/ptrace.h> unexpectedly changed so much that old pt_regs.orig_eax
offset is no longer valid.  Have you tried to rebuild strace with those
kernel headers that match the kernel you test?


-- 
ldv

[ CONTENT OF TYPE application/pgp-signature SKIPPED ]

Powered by blists - more mailing lists

Your e-mail address:

Powered by Openwall GNU/*/Linux - Powered by OpenVZ