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Bug 639048 - broken internal linkage causes SIGSEGV within libaudit.so.1.0.0
Summary: broken internal linkage causes SIGSEGV within libaudit.so.1.0.0
Keywords:
Status: CLOSED NEXTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: openssh
Version: rawhide
Hardware: x86_64
OS: Linux
low
medium
Target Milestone: ---
Assignee: Jan F. Chadima
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
: 638978 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-09-30 17:06 UTC by Kamil Dudka
Modified: 2011-01-26 16:17 UTC (History)
5 users (show)

Fixed In Version: openssh-5.6p1-10
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-01-26 16:17:14 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)
fix (deleted)
2010-09-30 17:06 UTC, Kamil Dudka 		no flags Details | Diff
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Description Kamil Dudka 2010-09-30 17:06:00 UTC 
Created attachment 450818 [details]
fix

Description of problem:
#0  0x00007ffff7742c58 in audit_log_acct_message (audit_fd=4, type=1112, pgname=0x0, op=0x7ffff7fe4e30 "login", 
    name=0xfffffffff82107a0 <Address 0xfffffffff82107a0 out of bounds>, id=4294967295, host=0x0, 
    addr=0xfffffffff8212d80 <Address 0xfffffffff8212d80 out of bounds>, tty=0x7ffff7fdf097 "sshd", result=0) at audit_logging.c:391
#1  0x00007ffff7fb1de5 in linux_audit_record_event (uid=-1, username=<value optimized out>, hostname=0x0, 
    ip=0xfffffffff8212d80 <Address 0xfffffffff8212d80 out of bounds>, ttyn=0x7ffff7fdf097 "sshd", success=<value optimized out>)
    at audit-linux.c:54
#2  0x00007ffff7f99ad2 in userauth_finish (authctxt=0x7ffff8212180, authenticated=<value optimized out>, method=0x7ffff820f840 "none")
    at auth2.c:350
#3  0x00007ffff7f9a0a7 in input_userauth_request (type=<value optimized out>, seq=<value optimized out>, ctxt=0x7ffff8212180)
    at auth2.c:302
#4  0x00007ffff7fd22b6 in dispatch_run (mode=0, done=0x7ffff8212180, ctxt=0x7ffff8212180) at dispatch.c:98
#5  0x00007ffff7f8ddd6 in main (ac=<value optimized out>, av=<value optimized out>) at sshd.c:2041

(gdb) print canonical_host_ip
$1 = 0x7ffff8212d80 "127.0.0.1"

    0x7ffff8212d80 is the valid address
0xfffffffff8212d80 is a nonsense caused by broken linkage among openssh modules


Version-Release number of selected component (if applicable):
openssh-server-5.6p1-9.fc15.x86_64


Additional info:
Patch attached.
Comment 1 Kamil Dudka 2010-09-30 17:59:56 UTC 
*** Bug 638978 has been marked as a duplicate of this bug. ***
Comment 2 Jan F. Chadima 2010-10-01 07:31:03 UTC 
please test it
Comment 3 Kamil Dudka 2010-10-01 08:47:29 UTC 
SCP/SFTP tests from curl's test-suite are back with openssh-server-5.6p1-10.fc15:

http://koji.fedoraproject.org/koji/getfile?taskID=2505677&name=build.log
Comment 4 Kamil Dudka 2010-10-01 09:00:59 UTC 
Although the patch solves the problem, please consider moving the declaration of audit_username() to audit.h, where it correctly belongs.  I didn't read much the sources yesterday.
Comment 5 Michal Schmidt 2010-10-01 09:07:34 UTC 
openssh-server-5.6p1-10.fc15 fixes the SIGSEGV for me.
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