Error 4 In Libc
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error 4 on gui log in General support questions Post Reply Print view Search Advanced search 8 posts • Page 1 of 1 AlanH Posts: 4 Joined: 2013/02/21 01:51:02 Location: Richardson, TX [SOLVED] seg fault error 4 on gui log error 4 in libc 2.12 so centos in Quote Postby AlanH » 2013/02/21 02:41:31 Hi I am new to the forum and segfault error 4 in libc 2.12 so to Centos, so please be patient with me. I apologies in advance as this is a bit long. I am trying to set segfault at 0 ip sp error 4 in libc 2.12 so up a server for my research group and have run into a snag. I bit of history, the server was first built at the beginning of December, by a student who was leaving the group. I inherited the
Libc Error Codes
box with a fresh install of Centos 6.3 that had not even been booted for first use. I do not have the full specs of the machine with me as I am at home right now, but off the top of my head it is a new i5 with 32 GB ram using the internal Intel graphics of the i5. The system was installed on a 1.5 TB drive with a secondary 2TB data drive. About error 4 in libc-2.12.so redhat 3 weeks ago our building had a power spike that may have affected the machine. The issues started showing up when a user could not mount and NFS share he uses (logging in via ssh in case it matters). I logged in directly and noticed several gnome applets crashing due to signal 11. Disk utility reported that the system drive had 27 bad sectors, but running bad blocks in the terminal did not report any issues. After a bit of searching and trying to repair the disk, I did a fresh install on a new disk and everything ran fine for 4 day ( 2 of them were the weekend while no one was in the office) then started getting the signal 11 errors again. I figured the power spike must have damaged the mobo or cpu, so I do a fresh install on yet another drive in a whole new system. This one is a mac pro with dual xenon 6 core processors and 62 GB of ram (my professor wants me to convert 3 more of these beasts and cluster if we can get them working). This system works for about 2 days before getting the signal 11 errors. For this latest build I took a look in /var/log/messages and found thisFeb 20 14:04:25 modeler kernel: wnck-applet[10443]: segfault at 3c00000000 ip 0000003c25128190 sp 00
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Libc Segfault Error 4
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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 http://stackoverflow.com/questions/20679292/locate-where-in-libc-my-segfault-occurs site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up locate error 4 where in libc my segfault occurs up vote 1 down vote favorite My C program crashed on CentOS 5.7 with the following log: kernel: [1030648.130682] myapp[16454]: segfault at 0 ip b765f683 sp bfc3fa0c error 4 in libc-2.5.so[b75ee000+157000] Seems a call to libc caused the segfault. How can I know in which function in libc the segfault happened? It's a prod environment and no coredump error 4 in file was left; and it rarely reproduces. So, what I can do now is to analyze which function in libc (called by my program) caused this segfault, then I can check my code. It'll be great if there are pointers that explain what these numbers mean: ip b765f683, sp bfc3fa0c, error 4, b75ee000+157000. I googled but didn't find good references. Thanks. c segmentation-fault libc share|improve this question edited Dec 20 '13 at 3:37 asked Dec 19 '13 at 10:35 Wang Tuma 211419 2 Have you tried googling with your title? unknownroad.com/rtfm/gdbtut/gdbsegfault.html stackoverflow.com/questions/13337472/… –RedX Dec 19 '13 at 10:37 That's why we compile with the -g flag, and use tools like gdb: so we can work it out ourselves, and not use a Q&A site as an interactive debugger –Elias Van Ootegem Dec 19 '13 at 11:40 1 sorry I didn't mean to use this site as an interactive debugger. My problem is that, the sgefault happened at a prod environment and no coredump file was left; and it rarely reproduces so using gdb to see where it happens doesn't work (since it doesn't crash a l