Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264441AbUDSOSE (ORCPT ); Mon, 19 Apr 2004 10:18:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264460AbUDSOSE (ORCPT ); Mon, 19 Apr 2004 10:18:04 -0400 Received: from anor.ics.muni.cz ([147.251.4.35]:29838 "EHLO anor.ics.muni.cz") by vger.kernel.org with ESMTP id S264441AbUDSOPj (ORCPT ); Mon, 19 Apr 2004 10:15:39 -0400 Date: Mon, 19 Apr 2004 16:15:36 +0200 From: Jan Kasprzak To: linux-kernel@vger.kernel.org Subject: x86_64 bad frame in signal deliver Message-ID: <20040419141536.GU23938@fi.muni.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2i X-Muni-Spam-TestIP: 147.251.48.3 X-Muni-Virus-Test: Clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2135 Lines: 41 Hello, all! I have got the following messages on my FTP server running x86_64: proftpd[16913]: segfault at 0000007fbf7ff170 rip 000000000041ecaa rsp 0000007fbf7ff160 error 6 proftpd[16913] bad frame in signal deliver frame:0000007fbf7fef18 rip:41ecaa rsp:7fbf7ff160 orax:ffffffffffffffff proftpd[17332]: segfault at 0000007fbf7ff170 rip 000000000041ecaa rsp 0000007fbf7ff160 error 6 proftpd[17332] bad frame in signal deliver frame:0000007fbf7fef18 rip:41ecaa rsp:7fbf7ff160 orax:ffffffffffffffff proftpd[17803]: segfault at 0000007fbf7ff170 rip 000000000041ecaa rsp 0000007fbf7ff160 error 6 proftpd[17803] bad frame in signal deliver frame:0000007fbf7fef18 rip:41ecaa rsp:7fbf7ff160 orax:ffffffffffffffff proftpd[18200]: segfault at 0000007fbf7ff170 rip 000000000041ecaa rsp 0000007fbf7ff160 error 6 proftpd[18200] bad frame in signal deliver frame:0000007fbf7fef18 rip:41ecaa rsp:7fbf7ff160 orax:ffffffffffffffff Does that mean that proftpd segfaulted inside user space (and is thus buggy or even insecure) - as address rip:41ecaa suggests, or is it some kind of kernel bug? The /proc//maps on my system suggests that 0x41ecaa is a valid code address: /proc/9878/maps:00400000-00460000 r-xp 00000000 09:00 765659 /usr/sbin/proftpd /proc/9878/maps:0055f000-00568000 rw-p 0005f000 09:00 765659 /usr/sbin/proftpd /proc/9878/maps:00667000-00668000 rw-p 00067000 09:00 765659 /usr/sbin/proftpd Kernel is 2.6.5 on Fedora Core 1/x86_64. Thanks, -Yenya -- | Jan "Yenya" Kasprzak | | GPG: ID 1024/D3498839 Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E | | http://www.fi.muni.cz/~kas/ Czech Linux Homepage: http://www.linux.cz/ | Any compiler or language that likes to hide things like memory allocations behind your back just isn't a good choice for a kernel. --Linus Torvalds - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/