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Re: [Xen-devel] [BUG][4.5.1]xl cpupool-create segfault (with config file parameter)



On 08/13/2015 01:29 PM, Ian Campbell wrote:
On Thu, 2015-08-13 at 13:13 +0200, Benjamin Beier wrote:

Program received signal SIGSEGV, Segmentation fault.
0x0000000000418db5 in main_cpupoolcreate (argc=,
argv=0x7fffffffda50) at xl_cmdimpl.c:7102
7102    xl_cmdimpl.c: No such file or directory.
(gdb) bt
#0  0x0000000000418db5 in main_cpupoolcreate (argc=<optimized out>,
argv=0x7fffffffda50) at xl_cmdimpl.c:7102
#1  0x0000000000407c79 in main (argc=2, argv=0x7fffffffda50) at xl.c:361

In "git show RELEASE-4.5.1:tools/libxl/xl_cmdimpl.c" line 7102 is a blank
line. The next line is:
      config = xlu_cfg_init(stderr, config_src);
which might be the culprit but also might not be.

Are you running pristine 4.5.1 or are the (perhaps gentoo added) patches?
Can you figure out what line 7102 of that might be.

Just tell me if this is a gentoo-only thing and I will open a bug report
there.

It's not clear yet, since it might be a backport of a buggy patch, but it's
starting to look a bit that way. Once xl_cmdimpl.c:7102 and the list of
patches is clarified I think we'll know one way or another.

Ian

I am not an expert for ebuilds and the xen-tools ebuild is rather complicated. I filed a gentoo bug report and linked to this upstream report here. Hopefully one of the gentoo ebuild maintainers has further information for you.

https://bugs.gentoo.org/show_bug.cgi?id=557458

Regards,
Benjamin


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