[Bug gdb/17873] New: kgdb on Freescale i.MX6 processor SEGV's on startup with 3.14 and 3.19 kernels

[Bug gdb/17873] New: kgdb on Freescale i.MX6 processor SEGV's on startup with 3.14 and 3.19 kernels

[alison@she-devel.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17873

            Bug ID: 17873
           Summary: kgdb on Freescale i.MX6 processor SEGV's on startup
                    with 3.14 and 3.19 kernels
           Product: gdb
           Version: 7.7
            Status: NEW
          Severity: critical
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: alison@she-devel.com

KGDB in the form of arm-none-linux-gnueabi-gdb 7.7.50 reliably hits a
segmentation violation and drops core when used with the 3.14 or 3.19 Linux
kernels with the Freescale i.MX6Q processor.    KGDB worked well with 3.8
kernel on this target.   We have seen the problem on more than one kind of
i.MX6Q board.

Since the problem is 100% reproducible, I'd be happy to provide any additional
information that would be helpful.

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[Bug gdb/17873] kgdb on Freescale i.MX6 processor SEGV's on startup with 3.14 and 3.19 kernels

[alison@she-devel.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17873

Alison Chaiken <alison@she-devel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alison@she-devel.com

--- Comment #1 from Alison Chaiken <alison@she-devel.com> ---
Created attachment 8083
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8083&action=edit
Console output showing segmentation violation

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[Bug gdb/17873] kgdb on Freescale i.MX6 processor SEGV's on startup with 3.14 and 3.19 kernels

[alison@she-devel.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17873

Alison Chaiken <alison@she-devel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |Freescale i.MX6Q, multiple
                   |                            |board varieties
               Host|                            |Debian Testing x86_64
              Build|                            |3.19 or 3.14 kernel

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[Bug gdb/17873] kgdb on Freescale i.MX6 processor SEGV's on startup with 3.14 and 3.19 kernels

[alison@she-devel.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17873

--- Comment #2 from Alison Chaiken <alison@she-devel.com> ---
*** Bug 17872 has been marked as a duplicate of this bug. ***

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[Bug gdb/17873] kgdb on Freescale i.MX6 processor SEGV's on startup with 3.14 and 3.19 kernels

[alison@she-devel.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17873

--- Comment #3 from Alison Chaiken <alison@she-devel.com> ---
Ah, I forgot to mention that I've never seen an error from mm/slub.c except
when running KGDB.

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