Re: Why gdb can't find symbol table when trying to debug ceph?

[huang jun <hjwsm1989@gmail.com>]

that maybe the reason, do you have the same problem if there is no such warning?

2016-11-19 19:00 GMT+08:00 xxhdx1985126 <xxhdx1985126@163.com>:
>
> Hi, everyone.
>
>
> I'm trying to fix a problem in ceph using its core file and gdb.
> gdb successfully loaded debug symbol from ceph-debuginfo:
>
>
> Reading symbols from /usr/bin/ceph-osd...Reading symbols from /usr/lib/debug/usr/bin/ceph-osd.debug...done.
>
>
> However, it still can't find the symbol table when I use "bt" to trace the stack:
>
>
> #0  0x000000393da0f65b in ?? ()
> No symbol table info available.
> #1  0x0000000000a51636 in install_standard_sighandlers () at global/signal_handler.cc:121
> No locals.
> #2  0x00007fc7a77f9ed0 in ?? ()
> No symbol table info available.
> #3  0x00007fc7a77f9e10 in ?? ()
> No symbol table info available.
> #4  0x00007fc7a77f9b90 in ?? ()
> No symbol table info available.
> #5  0x00007fc66d3142e0 in ?? ()
> No symbol table info available.
> #6  0x00007fc7fac64100 in ?? ()
> No symbol table info available.
> #7  0x0000003900000000 in ?? ()
> No symbol table info available.
> #8  0x0000000000a51155 in SignalHandler::unregister_handler (this=0x1105440, signum=<value optimized out>, handler=<value optimized out>) at global/signal_handler.cc:317
> No locals.
> #9  0x000000393eabcc33 in ?? ()
> No symbol table info available.
> #10 0x000000393eabcd2e in ?? ()
> No symbol table info available.
>
>
> Why is this happening?
>
>
> PS: when gdb started running, it prompted the following warning:
>
>
> BFD: Warning: /home/xuxuehan/online_problems.2016-11-19.7-01/core-ceph-osd-6-32337-32337-19906-1479510049 is truncated: expected core file size >= 8372899840, found: 7439335424
>
>
> Could this be the cause of gdb not finding the symbol table?



-- 
Thank you!
HuangJun