Re: [Xen-devel] Fwd: NetBSD xl core-dump not working... Memory fault (core dumped)

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-11-04 at 22:13 +0000, Mike C. wrote:
> On 31.10.13 04:34, Miguel Clara wrote:
> 
> > I was trying to get a core-dump for a domU with xl and got this error:
> >
> > # xl dump-core 20 test.core
> > Memory fault
> >
> > GDB shows this:
> >
> > a# gdb xl xl.core
> > GNU gdb (GDB) 7.3.1
> > Copyright (C) 2011 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later<http://gnu.org/licenses/gpl.html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> > and "show warranty" for details.
> > This GDB was configured as "x86_64--netbsd".
> > For bug reporting instructions, please see:
> > <http://www.gnu.org/software/gdb/bugs/>...
> > Reading symbols from /usr/sbin/xl...done.
> > [New process 1]
> > Core was generated by `xl'.
> > Program terminated with signal 11, Segmentation fault.
> > #0  0x00007f7ff7007b45 in xc_domain_dumpcore_via_callback
> > (xch=0x7f7ff7b0d800, domid=20, args=0x7f7fffffdae0,
> > dump_rtn=0x7f7ff700632c<local_file_dump>)
> >      at xc_core.c:860

We need to know your version of Xen (ideally the changeset id) to make
sense of these line numbers. Line 860 of this file doesn't look
plausible for unstable or 4.3.0. Could be 4.2 I guess?

> > 860     xc_core.c: No such file or directory.
> >          in xc_core.c
> >
> >
> > (gdb) backtrace
> > #0  0x00007f7ff7007b45 in xc_domain_dumpcore_via_callback
> > (xch=0x7f7ff7b0d800, domid=20, args=0x7f7fffffdae0,
> > dump_rtn=0x7f7ff700632c<local_file_dump>)
> >      at xc_core.c:860
> > #1  0x00007f7ff7007fda in xc_domain_dumpcore (xch=0x7f7ff7b0d800,
> > domid=20, corename=0x7f7ffffffe78 "test.core") at xc_core.c:983
> > #2  0x00007f7ff74117b3 in libxl_domain_core_dump (ctx=0x7f7ff7b03200,
> > domid=20, filename=0x7f7ffffffe78 "test.core", ao_how=<optimized out>)
> > at libxl.c:808
> > #3  0x000000000040f748 in core_dump_domain (filename=0x7f7ffffffe78
> > "test.core", domain_spec=<optimized out>) at xl_cmdimpl.c:3301
> > #4  main_dump_core (argc=<optimized out>, argv=0x7f7fffffdca0) at
> > xl_cmdimpl.c:3642
> > #5  0x0000000000407055 in main (argc=3, argv=0x7f7fffffdca0) at xl.c:267
> >
> 
> I think, xen-devel is the right list for this.
> It's ok to cross-post to keep NetBSD people involved for answering
> NetBSD specific questions from the Xen/Citrix people that would
> be not answered, otherwise.
> 
> Christoph
> 
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel



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