Kernel Snmpd Segfault Error 14
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Bug -Last Comment First Last Prev Next This bug is not in your last search results. Bug316621 - snmpd segfaults Summary: kernel segfault error 4 snmpd segfaults Status: CLOSED ERRATA Aliases: None Product: Fedora Classification: Fedora Component: kernel segfault at rip rsp error 4 net-snmp (Show other bugs) Sub Component: --- Version: 7 Hardware: All Linux Priority low Severity high TargetMilestone: --- TargetRelease:
Segfault At 0 Ip Sp Error 4
--- Assigned To: Jan Safranek QA Contact: Fedora Extras Quality Assurance Docs Contact: URL: Whiteboard: Keywords: Depends On: Blocks: Show dependency tree /graph Reported: 2007-10-03 06:27 EDT by Thomas
Segfault Error 6
Antony Modified: 2007-11-30 17:12 EST (History) CC List: 0 users See Also: Fixed In Version: 5.4-15.fc7 Doc Type: Bug Fix Doc Text: Story Points: --- Clone Of: Environment: Last Closed: 2007-10-15 17:29:30 EDT Type: --- Regression: --- Mount Type: --- Documentation: --- CRM: Verified Versions: Category: --- oVirt Team: --- RHEL 7.3 requirements from Atomic Host: Cloudforms Team: --- Attachments (Terms of Use) segfault at rip rsp error 6 output from 'snmpd -f -Lo -DALL' (66.97 KB, application/octet-stream) 2007-10-06 07:15 EDT, Thomas Antony no flags Details Add an attachment (proposed patch, testcase, etc.) Groups: None (edit) Description Thomas Antony 2007-10-03 06:27:49 EDT Description of problem: snmpd segfaults immediately after starting [thomas@srv1 ]$ sudo gdb snmpd GNU gdb Red Hat Linux (6.6-15.fc7rh) Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu"... Using host libthread_db library "/lib64/libthread_db.so.1". (gdb) r -a -f Starting program: /usr/sbin/snmpd -a -f [Thread debugging using libthread_db enabled] [New Thread 46912544335328 (LWP 28328)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 46912544335328 (LWP 28328)] 0x00002aaaad1aac20 in strcpy () from /lib64/libc.so.6 Comment 1 Thomas Antony 2007-10-03 09:46:22 EDT This is logged to /var/log/messages snmpd[4132]: segfault at 0000000000000001 rip 00002aaaad1aac20 rsp 00007fff63bf37d8 error 4 Comment 2 Jan Safranek 2007-10-05 06:42:06 EDT net-snmp-5.4-14.fc7 is working for
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Segfault Error 15
questions you might have Meta Discuss the workings and policies of "segfault at 0000000000000000 rip" this site About Us Learn more about Stack Overflow the company Business Learn more about hiring kernel ptymonitor segfault developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system https://bugzilla.redhat.com/show_bug.cgi?id=316621 and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to diagnose frequent segfaults up vote 4 down vote favorite 2 My server is logging frequent segmentation faults http://serverfault.com/questions/243579/how-to-diagnose-frequent-segfaults to /var/log/kern.log in different tools. So far I've seen them in Perl, PHP and rsync. All installed software is up-to-date Debian packages. Here's an exerpt from the log file: Mar 2 01:07:54 gaz kernel: [ 5316.246303] imapsync[4533]: segfault at 8b ip 00007fb448c98fe6 sp 00007ffff571dd68 error 4 in libperl.so.5.10.1[7fb448bd7000+164000] Mar 2 01:17:42 gaz kernel: [ 5904.354307] php5-cgi[4441]: segfault at 2bb3dc8 ip 0000000002bb3dc8 sp 00007fffbeeaae48 error 15 Mar 2 02:54:05 gaz kernel: [11687.922316] php5-cgi[4495]: segfault at 2d7acf9 ip 0000000002d7acf9 sp 00007fff60c6eb18 error 15 Mar 2 10:50:08 gaz kernel: [40250.390322] BUG: unable to handle kernel paging request at 00000000024b03f0 Mar 2 10:50:08 gaz kernel: [40250.390341] IP: [<00000000024b03f0>] 0x24b03f0 Mar 2 10:50:08 gaz kernel: [40250.390353] PGD 208c71067 PUD 21c811067 PMD 209329067 PTE 8000000211c88067 Mar 2 10:50:08 gaz kernel: [40250.390365] Oops: 0011 [#1] SMP Mar 2 10:50:08 gaz kernel: [40250.390373] last sysfs file: /sys/devices/pci0000:00/0000:00:12.0/host4/target4:0:0/4:0:0:0/block/sdb/stat Mar 2 10:50:08 gaz kernel: [40250.390386] CPU 1 Mar 2 10:50:08 gaz kernel: [40250.390392] Modules linked in: cpufreq_userspace cpufreq_stat
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack http://stackoverflow.com/questions/1456899/what-are-segfault-rip-rsp-numbers-and-how-to-use-them Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack https://sourceforge.net/p/net-snmp/bugs/1875/ Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What are segfault rip/rsp numbers and how to use them up vote 10 down vote favorite 5 When my linux application crashes, it produces a line in the logs something like: segfault at 0000000 rip 00003f32a823 rsp 000123ade323 error 4 What are those rip and segfault error rsp addresses? how do I use them to pinpoint the problem? do they correspond to something in the "objdump" or "readelf" outputs? are they useful if my program gets its symbols stripped out (to a separate file, which can be used using gdb) debugging segmentation-fault share|improve this question edited Jan 12 '10 at 2:30 Bill the Lizard 223k139448737 asked Sep 21 '09 at 21:11 johnnys add a comment| 2 Answers 2 active oldest votes up vote 6 down vote Well the rip pointer tells you the segfault at rip instruction that caused the crash. You need to look it up in a map file. In the map file you will have a list of functions and their starting address. When you load the application it is loaded to a base address. The rip pointer - the base address gives you the map file address. If you then search through the map file for a function that starts at an address slightly lower than your rip pointer and is followed, in the list, by a function with a higher address you have located the function that crashed. From there you need to try and identify what went wrong in your code. Its not much fun but it, at least, gives you a starting point. Edit: The "segfault at" bit is telling you, i'd wager, that you have dereferenced a NULL pointer. The rsp is the current stack pointer. Alas its probably not all that useful. With a memory dump you "may" be able to figure out more accurately where you'd got to in the function but it can be really hard to work out, exactly, where you are in an optimised build share|improve this answer edited Sep 21 '09 at 21:35 answered Sep 21 '09 at 21:20 Goz 43.5k1489159 add a comment| up vote 3 down vote I got the error, too. When I saw: probe.out[28503]: segfault at 0000000000000180 rip 00000000004450c0 rsp 00007fff4d508178 error 4 probe.out is an app which using libavformat (ffmpeg). I disassembled it. objdump -d probe.out The rip is where the
you by: baerm, dts12, hardaker, marz, and 3 others Summary Files Reviews Support News Mailing Lists Bugs Feature Requests Patches Official Patches Htdocs Code Create Ticket View Stats Group perl debian 64-bit agentx aix backport-needed disman embedded freeBSD hpux IPv6 irix linux macOS netBSD openBSD proxy-override-etc smux solaris traps tru64 v4_only windows Searches Changes Closed Tickets My bugs Open Tickets Help Formatting Help #1875 snmpwalk or snmpgetnext cause snmpd segfault Milestone: 64-bit Status: closed Owner: nobody Labels: agent (1105) Priority: 5 Updated: 2012-11-08 Created: 2007-09-24 Creator: Anonymous Private: No This is a x86_64 only issue on rhel5. # cat /etc/issue Red Hat Enterprise Linux Server release 5 (Tikanga) Kernel \r on an \m #uname -a Linux vm-rles5 2.6.18-8.el5xen #1 SMP Fri Jan 26 14:29:35 EST 2007 x86_64 x86_64 x86_64 GNU/Linux net-snmp-5.3.1-14.el5 net-snmp-utils-5.3.1-14.el5 Reproduce steps: 1. leave only one line in /etc/snmp/snmpd.conf rwcommunity public 127.0.0.1 2. Startup snmpd 3. #snmpwalk -O s -v 1 -c public -m all localhost tcpOutRsts.0 Result: snmpd is killed. #tail /var/log/messages Jun 18 21:24:02 vm-rles5 snmpd[3833]: Connection from UDP: [127.0.0.1]:32797 Jun 18 21:24:02 vm-rles5 last message repeated 275 times Jun 18 21:24:02 vm-rles5 snmpd[3833]: ipSystemStatsTable node ipSystemStatsOutFragOKs not implemented: skipping Jun 18 21:24:02 vm-rles5 snmpd[3833]: ipSystemStatsTable node ipSystemStatsOutFragOKs not implemented: skipping Jun 18 21:24:02 vm-rles5 snmpd[3833]: Connection from UDP: [127.0.0.1]:32797 Jun 18 21:24:02 vm-rles5 last message repeated 197 times Jun 18 21:24:03 vm-rles5 kernel: snmpd[3833]: segfault at 000055756cdc762c rip 00002aaaab6cdc56 rsp 00007fff80111ff0 error 6 gdb backtrace: Connection from UDP: [127.0.0.1]:32797 ---Type