[Bug 631305] New: dhcrelay segfaults at first request
http://bugzilla.novell.com/show_bug.cgi?id=631305 http://bugzilla.novell.com/show_bug.cgi?id=631305#c0 Summary: dhcrelay segfaults at first request Classification: openSUSE Product: openSUSE 11.3 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Network AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: andi-nbz@firstfloor.org QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8 Simply configuring it to listen to a tap interface and forwarding to an external dhcp server: Aug 15 11:39:10 zeitgeber dhcrelay: Internet Systems Consortium DHCP Relay Agent 4.1.1-P1 Aug 15 11:39:10 zeitgeber dhcrelay: Copyright 2004-2010 Internet Systems Consortium. Aug 15 11:39:10 zeitgeber dhcrelay: All rights reserved. Aug 15 11:39:10 zeitgeber dhcrelay: For info, please visit https://www.isc.org/software/dhcp/ Aug 15 11:39:10 zeitgeber dhcrelay: Listening on LPF/tap0/ae:b8:8b:53:fe:7c Aug 15 11:39:10 zeitgeber dhcrelay: Sending on LPF/tap0/ae:b8:8b:53:fe:7c Aug 15 11:39:10 zeitgeber dhcrelay: Sending on Socket/fallback Request comming in: Aug 15 11:39:12 zeitgeber kernel: [41110.534756] dhcrelay[6641]: segfault at 0 ip 00007f3e759de20f sp 00007fff0822b680 error 4 in dhcrelay[7f3e759d1000+6d000] Running it under gdb gives Program received signal SIGSEGV, Segmentation fault. 0x00007ffff7f9f20f in do_relay4 (ip=<value optimized out>, packet=0x7fffffffcd40, length=<value optimized out>, from_port=<value optimized out>, from=..., hfrom=<value optimized out>) at dhcrelay.c:660 660 dhcrelay.c: No such file or directory. in dhcrelay.c (gdb) bt #0 0x00007ffff7f9f20f in do_relay4 (ip=<value optimized out>, packet=0x7fffffffcd40, length=<value optimized out>, from_port=<value optimized out>, from=..., hfrom=<value optimized out>) at dhcrelay.c:660 #1 0x00007ffff7fa7e80 in got_one (h=0x7ffff820d960) at discover.c:1393 #2 0x00007ffff7fd372b in omapi_one_dispatch (wo=<value optimized out>, t=0x0) at dispatch.c:520 #3 0x00007ffff7fa9e5a in dispatch () at dispatch.c:92 #4 0x00007ffff7f9f7ec in main (argc=<value optimized out>, argv=<value optimized out>) at dhcrelay.c:549 Reproducible: Always Steps to Reproduce: 1. 2. 3. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=631305 http://bugzilla.novell.com/show_bug.cgi?id=631305#c yang xiaoyu <xyyang@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |xyyang@novell.com AssignedTo|bnc-team-screening@forge.pr |mt@novell.com |ovo.novell.com | -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=631305 https://bugzilla.novell.com/show_bug.cgi?id=631305#c1 Marius Tomaschewski <mt@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED --- Comment #1 from Marius Tomaschewski <mt@novell.com> 2010-08-17 10:22:30 UTC --- Going to take a look ... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=631305 https://bugzilla.novell.com/show_bug.cgi?id=631305#c2 Marius Tomaschewski <mt@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |andi-nbz@firstfloor.org --- Comment #2 from Marius Tomaschewski <mt@novell.com> 2010-08-17 13:54:49 UTC --- Both versions work fine for me: dhcp-relay-4.1.1.P1-3.2.x86_64 from openSUSE-11.3-Oss dhcp-relay-4.1.1.P1-4.1.1.x86_64 from openSUSE-11.3-Update Could you provide more details about your setup please? Which parameters are used (ps auxwww | grep dhcrelay)? Please install also debuginfo/debugsource packages from http://download.opensuse.org/debug/update/11.3/rpm/x86_64/dhcp-debugsource-4... http://download.opensuse.org/debug/update/11.3/rpm/x86_64/dhcp-relay-debugin... and try to recreate the backtrace when possible. I do not see anything special in dhcrelay.c:660. You're using a tap interface. Did you remove and recreated the tap interface without to restart the relay? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=631305 https://bugzilla.novell.com/show_bug.cgi?id=631305#c3 Andi N Kleen <andi-nbz@firstfloor.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED InfoProvider|andi-nbz@firstfloor.org | --- Comment #3 from Andi N Kleen <andi-nbz@firstfloor.org> 2010-09-10 09:31:14 UTC --- The set up is dhcp relay was supposed to forward requests from qemu guests to the main network. qemu-ifup is just exit 0 so the tap interfaces already exist before created with tunctl -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=631305 https://bugzilla.novell.com/show_bug.cgi?id=631305#c4 --- Comment #4 from Marius Tomaschewski <mt@novell.com> 2010-10-26 20:22:38 UTC --- Created an attachment (id=397166) --> (http://bugzilla.novell.com/attachment.cgi?id=397166) Patch fixing the segfault and discarding packeds on interfaces without IP I've retested it and found out how you run into this problem: The tap0 interface you were using did not have any IP address configured. I'll fix it and forward the patch upstream, but this is a misconfiguration: Both, the interface to the server and the interface to the client need IPs. For example: eth0: 192.168.0.1/24 -- interface to the dhcp-server (192.168.0.254) tap0: 192.168.1.1/24 -- interface to the dhcp-client(s) The /etc/sysconfig/dhcrelay configuration for this scenario is: DHCRELAY_INTERFACES="tap0 eth0" DHCRELAY_SERVERS="192.168.0.254" on the command line it is: /usr/sbin/dhcrelay -i tap0 -i eth0 192.168.0.254 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=631305 https://bugzilla.novell.com/show_bug.cgi?id=631305#c7 --- Comment #7 from Marius Tomaschewski <mt@novell.com> 2010-10-27 14:29:50 UTC --- I've reported it upstream with the attached patch: ISC-Bugs #22409. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=631305 http://bugzilla.novell.com/show_bug.cgi?id=631305#c10 --- Comment #10 from Bernhard Wiedemann <bwiedemann@suse.com> --- This is an autogenerated message for OBS integration: This bug (631305) was mentioned in https://build.opensuse.org/request/show/54219 Factory / dhcp -- You are receiving this mail because: You are on the CC list for the bug.
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