Your message dated Mon, 30 Aug 2010 11:29:40 +0200 with message-id <20100830092940.GE26553@prunille.vinc17.org> and subject line Re: [Pkg-cups-devel] Bug#588150: cups no longer works with http: HTTP/1.1 426 Upgrade Required + server DoS has caused the Debian Bug report #588150, regarding cups no longer works with http: HTTP/1.1 426 Upgrade Required + server DoS to be marked as done. This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact owner@bugs.debian.org immediately.) -- 588150: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=588150 Debian Bug Tracking System Contact owner@bugs.debian.org with problems
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- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: cups no longer works with http: HTTP/1.1 426 Upgrade Required + server DoS
- From: Vincent Lefevre <vincent@vinc17.net>
- Date: Mon, 5 Jul 2010 16:50:16 +0200
- Message-id: <20100705145016.GA5918@ypig.lip.ens-lyon.fr>
Package: cups Version: 1.4.4-1 Severity: grave [I'm setting the severity to "grave" mainly because cups does more than 100 HTTP posts per second to the remote server, and this is really bad because the server is shared amongst many users.] While cups 1.4.3-1 works fine (I could check by downgrading to this version), cups 1.4.4-1 no longer works with http. A strace shows errors like: 16:07:02 sendto(3, "POST / HTTP/1.1\r\nContent-Length:"..., 153, 0, NULL, 0) = 153 16:07:02 sendto(3, "\1\1@\2\0\0\0\1\1G\0\22attributes-charset\0\5"..., 636, 0, NULL, 0) = 636 16:07:02 poll([{fd=3, events=POLLIN}], 1, 1000) = 1 ([{fd=3, revents=POLLIN|POLLERR}]) 16:07:02 recvfrom(3, "HTTP/1.1 426 Upgrade Required\r\nD"..., 2048, 0, NULL, NULL) = 787 16:07:02 close(3) = 0 with commands such as lpq, lpr, lpstat. Sometimes there are lots of such errors. For instance, a strace -t lpstat shows 3868 such errors after 30 seconds (see attached strace output, compressed with xz). Sometimes the connection freezes. For instance: 16:07:02 socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3 16:07:02 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 16:07:02 setsockopt(3, SOL_TCP, TCP_NODELAY, [1], 4) = 0 16:07:02 fcntl(3, F_SETFD, FD_CLOEXEC) = 0 16:07:02 connect(3, {sa_family=AF_INET, sin_port=htons(631), sin_addr=inet_addr("140.77.14.157")}, 16) = ? ERESTARTSYS (To be restarted) 16:07:13 --- SIGINT (Interrupt) @ 0 (0) --- 16:07:13 +++ killed by SIGINT +++ Perhaps the server didn't like all the requests that were done previously. The only parameter in /etc/cups/client.conf is a ServerName line with the server name. -- System Information: Debian Release: squeeze/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (SMP w/8 CPU cores) Locale: LANG=POSIX, LC_CTYPE=en_US.ISO8859-1 (charmap=ISO-8859-1) Shell: /bin/sh linked to /bin/dash Versions of packages cups depends on: ii adduser 3.112 add and remove users and groups ii bc 1.06.95-2 The GNU bc arbitrary precision cal ii cups-client 1.4.4-1 Common UNIX Printing System(tm) - ii cups-common 1.4.4-1 Common UNIX Printing System(tm) - ii debconf [debconf-2.0] 1.5.32 Debian configuration management sy ii ghostscript 8.70~dfsg-2.1 The GPL Ghostscript PostScript/PDF ii libavahi-client3 0.6.25-4 Avahi client library ii libavahi-common3 0.6.25-4 Avahi common library ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib ii libcups2 1.4.4-1 Common UNIX Printing System(tm) - ii libcupscgi1 1.4.4-1 Common UNIX Printing System(tm) - ii libcupsdriver1 1.4.4-1 Common UNIX Printing System(tm) - ii libcupsimage2 1.4.4-1 Common UNIX Printing System(tm) - ii libcupsmime1 1.4.4-1 Common UNIX Printing System(tm) - ii libcupsppdc1 1.4.4-1 Common UNIX Printing System(tm) - ii libdbus-1-3 1.2.24-1 simple interprocess messaging syst ii libgcc1 1:4.4.4-6 GCC support library ii libgssapi-krb5-2 1.8.1+dfsg-5 MIT Kerberos runtime libraries - k ii libijs-0.35 0.35-7 IJS raster image transport protoco ii libkrb5-3 1.8.1+dfsg-5 MIT Kerberos runtime libraries ii libldap-2.4-2 2.4.21-1 OpenLDAP libraries ii libpam0g 1.1.1-3 Pluggable Authentication Modules l ii libpaper1 1.1.24 library for handling paper charact ii libpoppler5 0.12.4-1 PDF rendering library ii libslp1 1.2.1-7.7 OpenSLP libraries ii libstdc++6 4.4.4-6 The GNU Standard C++ Library v3 ii libusb-0.1-4 2:0.1.12-15 userspace USB programming library ii lsb-base 3.2-23.1 Linux Standard Base 3.2 init scrip ii perl-modules 5.10.1-13 Core Perl modules ii poppler-utils 0.12.4-1 PDF utilitites (based on libpopple ii procps 1:3.2.8-9 /proc file system utilities ii ssl-cert 1.0.25 simple debconf wrapper for OpenSSL ii ttf-freefont 20090104-7 Freefont Serif, Sans and Mono True ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime Versions of packages cups recommends: ii cups-driver-gutenprint 5.2.5-1 printer drivers for CUPS ii foomatic-filters 4.0-20090509-1 OpenPrinting printer support - fil ii ghostscript-cups 8.70~dfsg-2.1 The GPL Ghostscript PostScript/PDF Versions of packages cups suggests: ii cups-bsd 1.4.4-1 Common UNIX Printing System(tm) - pn cups-pdf <none> (no description available) pn cups-ppdc <none> (no description available) ii foomatic-db 20100630-1 OpenPrinting printer support - dat ii foomatic-db-engine 4.0.4-1 OpenPrinting printer support - pro ii hplip 3.10.5-4 HP Linux Printing and Imaging Syst pn smbclient <none> (no description available) ii udev 158-1 /dev/ and hotplug management daemo pn xpdf-korean | xpdf-japanese | <none> (no description available) -- debconf information: cupsys/raw-print: true cupsys/backend: ipp, lpd, parallel, scsi, serial, socket, usb, snmp, dnssdAttachment: lpstat-strace.xz
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--- Begin Message ---
- To: Martin Pitt <mpitt@debian.org>
- Cc: 588150-done@bugs.debian.org
- Subject: Re: [Pkg-cups-devel] Bug#588150: cups no longer works with http: HTTP/1.1 426 Upgrade Required + server DoS
- From: Vincent Lefevre <vincent@vinc17.net>
- Date: Mon, 30 Aug 2010 11:29:40 +0200
- Message-id: <20100830092940.GE26553@prunille.vinc17.org>
- In-reply-to: <[🔎] 20100830083834.GE2507@piware.de>
- References: <20100705145016.GA5918@ypig.lip.ens-lyon.fr> <[🔎] 20100830083834.GE2507@piware.de>
Version: 1.4.4-3 On 2010-08-30 10:38:34 +0200, Martin Pitt wrote: > Is that still true with 1.4.4-3? -1 and -2 ended up with TLS disabled > due to a GNUTLS change. This is fixed in version -3. 1.4.4-3 solves the problem. Closing. -- Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon)
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