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and subject line Bug#285431: fixed in libnss-pgsql 1.3
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Date: Mon, 13 Dec 2004 16:08:03 +0800
From: Bernard Blackham <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: libnss-pgsql gives SIGBUS on sparc
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Package: libnss-pgsql1
Version: 1.0.2-1.4
On sparc, programs such as "id" give a SIGBUS when using
libnss-pgsql:
spark:/# id bernard
Bus error
spark:/#
GDB backtrace looks like this:
Program received signal SIGBUS, Bus error.
[Switching to Thread 16384 (LWP 9745)]
copy_attrval_n (res=0x1, attr=0x2c321 "bernard", valptr=0x2c301,
buffer=0xefffea3c, buflen=0xefffea40, row=7) at backend.c:117
117 *valptr = *buffer;
(gdb) bt
#0 copy_attrval_n (res=0x1, attr=0x2c321 "bernard", valptr=0x2c301,
buffer=0xefffea3c, buflen=0xefffea40, row=7) at backend.c:117
#1 0x501e6404 in getgroupmem (gid=1, result=0x50173f84, buffer=0x2c321,
buflen=1007) at backend.c:183
#2 0x501e6518 in res2grp (res=0x2ca20, result=0x50173f84, buffer=0x2c301 ":",
buflen=1015) at backend.c:223
#3 0x501e6b08 in backend_getgrgid (gid=0, result=0x50173f84,
buffer=0x2c2f8 "bernard", buflen=182816, errnop=0x501731b8)
at backend.c:468
#4 0x501e5cac in _nss_pgsql_getgrgid_r (gid=10002, result=0x50173f84,
buffer=0x2c2f8 "bernard", buflen=1024, errnop=0x501731b8)
at interface.c:193
#5 0x500d8f98 in getgrgid_r () from /lib/libc.so.6
#6 0x500d8888 in getgrgid () from /lib/libc.so.6
#7 0x00011540 in ?? ()
A patch that works for me is attached. I'm not sure if this is the
correct way to do it, but it resolves the bug. I'm happy to provide
any more information if needed.
Bernard.
--YZ5djTAD1cGYuMQK
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment; filename="libnss-pgsqlfix.diff"
--- libnss-pgsql-1.0.2/src/backend.c 2004-12-13 16:01:04.000000000 +0800
+++ libnss-pgsql-1.0.2/src/backend.c.new 2004-12-13 16:01:19.000000000
+0800
@@ -172,10 +172,15 @@ enum nss_status getgroupmem(gid_t gid,
goto BAIL_OUT;
}
+ /* realign the buffer on a 4-byte boundary */
+ buflen -= 4-((long)buffer & 0x3);
+ buffer += 4-((long)buffer & 0x3);
+
result->gr_mem = (char**)buffer;
- buffer += ptrsize;
- buflen -= ptrsize;
+ /* realign the buffer on a 4-byte boundary */
+ buffer += (ptrsize+3)&(~0x3);
+ buflen -= (ptrsize+3)&(~0x3);
status = NSS_STATUS_SUCCESS;
--YZ5djTAD1cGYuMQK--
---------------------------------------
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From: Christian Bayle <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
X-Katie: $Revision: 1.55 $
Subject: Bug#285431: fixed in libnss-pgsql 1.3
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Date: Fri, 25 Mar 2005 18:17:12 -0500
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Source: libnss-pgsql
Source-Version: 1.3
We believe that the bug you reported is fixed in the latest version of
libnss-pgsql, which is due to be installed in the Debian FTP archive:
libnss-pgsql1_1.3_i386.deb
to pool/main/libn/libnss-pgsql/libnss-pgsql1_1.3_i386.deb
libnss-pgsql_1.3.dsc
to pool/main/libn/libnss-pgsql/libnss-pgsql_1.3.dsc
libnss-pgsql_1.3.tar.gz
to pool/main/libn/libnss-pgsql/libnss-pgsql_1.3.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 [EMAIL PROTECTED],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Christian Bayle <[EMAIL PROTECTED]> (supplier of updated libnss-pgsql 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 [EMAIL PROTECTED])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.7
Date: Fri, 25 Mar 2005 22:58:54 +0100
Source: libnss-pgsql
Binary: libnss-pgsql1
Architecture: source i386
Version: 1.3
Distribution: unstable
Urgency: low
Maintainer: Wichert Akkerman <[EMAIL PROTECTED]>
Changed-By: Christian Bayle <[EMAIL PROTECTED]>
Description:
libnss-pgsql1 - name service switch module using PostgreSQL
Closes: 285431
Changes:
libnss-pgsql (1.3) unstable; urgency=low
.
* Applied a patch to remove SIGBUS error on sparc (Closes: Bug#285431)
Files:
6dfbe0593147ab9f68c55f00ec4fa615 670 admin extra libnss-pgsql_1.3.dsc
8a2a404a9f02a637fc8808a59009196b 324279 admin extra libnss-pgsql_1.3.tar.gz
357b9e5d028d90b0ee9a52504a7687db 18264 admin extra libnss-pgsql1_1.3_i386.deb
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