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Bug#419720: marked as done (apache2.2-common: unaligned trap in mod_ssl on alpha)

Your message dated Sun, 14 Dec 2008 09:32:07 +0000
with message-id <E1LBnKZ-0004wY-H7@ries.debian.org>
and subject line Bug#419720: fixed in apache2 2.2.11-1
has caused the Debian Bug report #419720,
regarding apache2.2-common: unaligned trap in mod_ssl on alpha
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.)


-- 
419720: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=419720
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: apache2.2-common
Version: 2.2.3-4
Severity: minor

mod_ssl is causing unaligned traps on alpha (backtrace is below). Here's the
offending section of code:

     1153     shmcb_safe_clear(idx, sizeof(SHMCBIndex));
     1154     shmcb_set_safe_time(&(idx->expires), expiry_time);
     1155     shmcb_set_safe_uint(&(idx->offset), new_offset);
     1156 
     1157     /* idx->removed = (unsigned char)0; */ /* Not needed given the memset above. */
     1158     idx->s_id2 = session_id[1];
     1159     ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
     1160                  "session_id[0]=%u, idx->s_id2=%u",
     1161                  session_id[0], session_id[1]);

I'm pretty new to the alpha, but I'm guessing the access to session_id[1] is
causing the trap, since session_id is an unsigned char * and idx->s_id2 seems
to be aligned on a 4- or 8-byte boundary.

I'm not sure of the best way to fix this. If there is anything I can do
(patch testing, etc.), please let me know!

Also, there seem to be a couple other less-frequent unaligned traps in
apache2 that I'm also trying to track down. Should I append them to this
bug, or is a separate one for each trap better?

Thanks!

#0  0x00000200017ffe54 in shmcb_insert_encoded_session (s=0x12023e428,
    queue=0x11fef8b00, cache=0x11fef8b20,
    encoded=0x11fef8b40 "0\201\221\002\001\001\002\002\003\001\004\002",
    encoded_len=148,
    session_id=0x1205e6b28 "\217\236�\234\210��߭u�\020����!w�6�taaй\024rU|G� ", expiry_time=1176822685)
    at /home/jwm/apache2-2.2.3/modules/ssl/ssl_scache_shmcb.c:1158
#1  0x00000200017fe8a0 in shmcb_store_session (s=0x12023e428,
    shm_segment=0x20003c94008,
    id=0x1205e6b28 "\217\236�\234\210��߭u�\020����!w�6�taaй\024rU|G� ",
    idlen=32, pSession=0x1205e6ae0, timeout=1176822685)
    at /home/jwm/apache2-2.2.3/modules/ssl/ssl_scache_shmcb.c:697
#2  0x00000200017fd68c in ssl_scache_shmcb_store (s=0x12023e428,
    id=0x1205e6b28 "\217\236�\234\210��߭u�\020����!w�6�taaй\024rU|G� ",
    idlen=32, timeout=1176822685, pSession=0x1205e6ae0)
    at /home/jwm/apache2-2.2.3/modules/ssl/ssl_scache_shmcb.c:411
#3  0x00000200017fb4e4 in ssl_scache_store (s=0x12023e428,
    id=0x1205e6b28 "\217\236�\234\210��߭u�\020����!w�6�taaй\024rU|G� ",
    idlen=32, expiry=1176822685, sess=0x1205e6ae0)
    at /home/jwm/apache2-2.2.3/modules/ssl/ssl_scache.c:99
#4  0x00000200017f0294 in ssl_callback_NewSessionCacheEntry (ssl=0x1205cbbe0,
    session=0x1205e6ae0)
    at /home/jwm/apache2-2.2.3/modules/ssl/ssl_engine_kernel.c:1638
#5  0x000002000080af98 in ssl_update_cache () from /usr/lib/libssl.so.0.9.8
#6  0x00000200007f0e20 in ssl3_accept () from /usr/lib/libssl.so.0.9.8
#7  0x000002000080a890 in SSL_accept () from /usr/lib/libssl.so.0.9.8
#8  0x00000200007fbb18 in ssl23_get_client_hello ()
   from /usr/lib/libssl.so.0.9.8
#9  0x00000200007fc750 in ssl23_accept () from /usr/lib/libssl.so.0.9.8
#10 0x000002000080a890 in SSL_accept () from /usr/lib/libssl.so.0.9.8
#11 0x00000200017ea408 in ssl_io_filter_connect (filter_ctx=0x120506490)
    at /home/jwm/apache2-2.2.3/modules/ssl/ssl_engine_io.c:1047
#12 0x00000200017eaeac in ssl_io_filter_input (f=0x1205d1308, bb=0x1205c71c0, 
    mode=AP_MODE_GETLINE, block=APR_BLOCK_READ, readbytes=0)
    at /home/jwm/apache2-2.2.3/modules/ssl/ssl_engine_io.c:1292
#13 0x000000012005bb98 in ap_get_brigade (next=0x1205d1308, bb=0x1205c71c0, 
    mode=AP_MODE_GETLINE, block=APR_BLOCK_READ, readbytes=0)
    at /home/jwm/apache2-2.2.3/server/util_filter.c:489
#14 0x000000012002f458 in ap_rgetline_core (s=0x1205c5c78, n=8192, 
    read=0x11fefb868, r=0x1205c5c48, fold=0, bb=0x1205c71c0)
    at /home/jwm/apache2-2.2.3/server/protocol.c:231
#15 0x000000012002ff0c in read_request_line (r=0x1205c5c48, bb=0x1205c71c0)
    at /home/jwm/apache2-2.2.3/server/protocol.c:596
#16 0x0000000120030e04 in ap_read_request (conn=0x120505b88)
    at /home/jwm/apache2-2.2.3/server/protocol.c:891
#17 0x0000000120061468 in ap_process_http_connection (c=0x120505b88)
    at /home/jwm/apache2-2.2.3/modules/http/http_core.c:177
#18 0x0000000120055918 in ap_run_process_connection (c=0x120505b88)
    at /home/jwm/apache2-2.2.3/server/connection.c:43
#19 0x0000000120055fa8 in ap_process_connection (c=0x120505b88, 
    csd=0x120505998) at /home/jwm/apache2-2.2.3/server/connection.c:178
#20 0x000000012006d894 in child_main (child_num_arg=0)
    at /home/jwm/apache2-2.2.3/server/mpm/prefork/prefork.c:640
#21 0x000000012006db58 in make_child (s=0x1200a6970, slot=0)
    at /home/jwm/apache2-2.2.3/server/mpm/prefork/prefork.c:736
#22 0x000000012006dc00 in startup_children (number_to_start=5)
    at /home/jwm/apache2-2.2.3/server/mpm/prefork/prefork.c:754
#23 0x000000012006e2dc in ap_mpm_run (_pconf=0x1200a0208, plog=0x1200d43a8, 
    s=0x1200a6970) at /home/jwm/apache2-2.2.3/server/mpm/prefork/prefork.c:975
#24 0x0000000120022e28 in main (argc=3, argv=0x11fefbcb8)
    at /home/jwm/apache2-2.2.3/server/main.c:717

-- System Information:
Debian Release: 4.0
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: alpha
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-4-alpha-smp
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)

Versions of packages apache2.2-common depends on:
ii  apache2-utils                2.2.3-4     utility programs for webservers
ii  libmagic1                    4.17-5etch1 File type determination library us
ii  lsb-base                     3.1-23.1    Linux Standard Base 3.1 init scrip
ii  mime-support                 3.39-1      MIME files 'mime.types' & 'mailcap
ii  net-tools                    1.60-17     The NET-3 networking toolkit
ii  procps                       1:3.2.7-3   /proc file system utilities

apache2.2-common recommends no packages.

-- no debconf information

--- End Message ---
--- Begin Message --- 
Source: apache2
Source-Version: 2.2.11-1

We believe that the bug you reported is fixed in the latest version of
apache2, which is due to be installed in the Debian FTP archive:

apache2-dbg_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-dbg_2.2.11-1_i386.deb
apache2-doc_2.2.11-1_all.deb
  to pool/main/a/apache2/apache2-doc_2.2.11-1_all.deb
apache2-mpm-event_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-mpm-event_2.2.11-1_i386.deb
apache2-mpm-prefork_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-mpm-prefork_2.2.11-1_i386.deb
apache2-mpm-worker_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-mpm-worker_2.2.11-1_i386.deb
apache2-prefork-dev_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-prefork-dev_2.2.11-1_i386.deb
apache2-src_2.2.11-1_all.deb
  to pool/main/a/apache2/apache2-src_2.2.11-1_all.deb
apache2-suexec-custom_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-suexec-custom_2.2.11-1_i386.deb
apache2-suexec_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-suexec_2.2.11-1_i386.deb
apache2-threaded-dev_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-threaded-dev_2.2.11-1_i386.deb
apache2-utils_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2-utils_2.2.11-1_i386.deb
apache2.2-common_2.2.11-1_i386.deb
  to pool/main/a/apache2/apache2.2-common_2.2.11-1_i386.deb
apache2_2.2.11-1.diff.gz
  to pool/main/a/apache2/apache2_2.2.11-1.diff.gz
apache2_2.2.11-1.dsc
  to pool/main/a/apache2/apache2_2.2.11-1.dsc
apache2_2.2.11-1_all.deb
  to pool/main/a/apache2/apache2_2.2.11-1_all.deb
apache2_2.2.11.orig.tar.gz
  to pool/main/a/apache2/apache2_2.2.11.orig.tar.gz



A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 419720@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Stefan Fritsch <sf@debian.org> (supplier of updated apache2 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Sun, 14 Dec 2008 09:34:24 +0100
Source: apache2
Binary: apache2.2-common apache2-mpm-worker apache2-mpm-prefork apache2-mpm-event apache2-utils apache2-suexec apache2-suexec-custom apache2 apache2-doc apache2-prefork-dev apache2-threaded-dev apache2-src apache2-dbg
Architecture: source i386 all
Version: 2.2.11-1
Distribution: unstable
Urgency: low
Maintainer: Debian Apache Maintainers <debian-apache@lists.debian.org>
Changed-By: Stefan Fritsch <sf@debian.org>
Description: 
 apache2    - Apache HTTP Server metapackage
 apache2-dbg - Apache debugging symbols
 apache2-doc - Apache HTTP Server documentation
 apache2-mpm-event - Apache HTTP Server - event driven model
 apache2-mpm-prefork - Apache HTTP Server - traditional non-threaded model
 apache2-mpm-worker - Apache HTTP Server - high speed threaded model
 apache2-prefork-dev - Apache development headers - non-threaded MPM
 apache2-src - Apache source code
 apache2-suexec - Standard suexec program for Apache 2 mod_suexec
 apache2-suexec-custom - Configurable suexec program for Apache 2 mod_suexec
 apache2-threaded-dev - Apache development headers - threaded MPM
 apache2-utils - utility programs for webservers
 apache2.2-common - Apache HTTP Server common files
Closes: 419720 495110 495982 508186
Changes: 
 apache2 (2.2.11-1) unstable; urgency=low
 .
   [Thom May]
   * New Upstream Version (Closes: #508186, LP: #307397)
     - Contains rewritten shmcb code which should fix alignment problems on
       alpha (Closes: #419720).
     - Notable new features: chroot support, mod_proxy improvements.
 .
   [Ryan Niebur]
   * fix segfault in ab when being verbose on ssl sites (Closes: #495982)
   * remove trailing slash for DocumentRoot (Closes: #495110)
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