Kernel Segfault Rip Rsp Error 4
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Linux Kernel Segfault Error 4
ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join segfault at rip rsp error 6 the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a kernel ptymonitor 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
Segfault At 0 Ip Sp Error 4
error 4 What are those rip and 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
Linux Segfault Error 6
vote 6 down vote Well the rip pointer tells you the 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 00007fff4d50
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"segfault At 0000000000000000 Rip"
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support questions including new installations Post Reply Print view Search Advanced search 3 posts • http://www.centos.org/forums/viewtopic.php?t=17669 Page 1 of 1 pmltd Posts: 1 Joined: 2011/08/05 15:35:22 segfault problem Quote Postby pmltd » 2011/08/05 15:50:59 Hicould anyone help me and explain what is wrong on my private server ?I get these logsthx alot !Aug 4 04:06:41 servxma004 kernel: php[7286]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fff70fb1f50 error error 4 4Aug 4 04:06:53 servxma004 kernel: php[7288]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fff30e8edc0 error 4Aug 4 04:07:53 servxma004 kernel: php[7296]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fffd39e57d0 error 4Aug 4 04:08:38 servxma004 kernel: php[7302]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fff1626c570 error 4Aug 4 04:09:03 servxma004 kernel: php[7309]: segfault at 0000000000004f68 segfault at 0 rip 000000000067bd4d rsp 00007fffa0baad80 error 4Aug 4 04:09:33 servxma004 kernel: php[7315]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fff5fa11200 error 4Aug 4 04:13:08 servxma004 kernel: php[7897]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007ffff8b05e20 error 4Aug 4 04:13:09 servxma004 kernel: php[7898]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fff13da8370 error 4Aug 4 04:13:15 servxma004 kernel: php[7903]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fffb35f2b70 error 4Aug 4 04:13:16 servxma004 kernel: php[7904]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fffc65a6ce0 error 4Aug 4 04:13:23 servxma004 kernel: php[7905]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fff414e0580 error 4Aug 4 04:13:24 servxma004 kernel: php[7906]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fffee4e5cb0 error 4Aug 4 04:13:31 servxma004 kernel: php[7922]: segfault at 0000000000004628 rip 000000000067bd4d rsp 00007fff2adcbe30 error 4Aug 4 04:13:32 servxma004 kernel: php[7923]: segfault at 0000000000000000 rip 000000000067bd2e rsp 00007fffcebd8fc0 error 4Aug 4 04:13:45 servxma004 kernel: php[7925]: segfault at 0000000000004628 rip 000000000067bd4d rsp 00007fff9251fcf0 error 4Aug 4 04:13:46 servxma004 kern