[Bug record/30073] [intel Efficient-core] FAIL: gdb.btrace/exception.exp: flat (pattern 1)

["markus.t.metzger at intel dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30073

--- Comment #9 from Markus Metzger <markus.t.metzger at intel dot com> ---
(In reply to Tom de Vries from comment #8)
> (In reply to Markus Metzger from comment #7)
> > (In reply to Tom de Vries from comment #6)
> > 
> > > record btrace
> > > continue
> > > maint btrace packet-history 0, +100
> > > #record function-call-history 1
> > > #record function-call-history /c 1
> > 
> > The maintenance command doesn't fetch the trace itself.  We'd need some
> > other record command before it, e.g. 'info record' or one of the two
> > commented-out commands.
> 
> With the two commented out commands added back, I have:
> ...
> +continue
> 
> Breakpoint 3, main () at
> /data/vries/gdb/src/gdb/testsuite/gdb.btrace/exception.cc:59
> 59        return ret; /* bp.2  */
> +record function-call-history 1
> 1       main()
> +record function-call-history /c 1
> 1       main()
> +maint btrace packet-history 0, +100
> 0       begin: 0x40076d, end: 0x400779
> ...

Thanks.  Looks like you're not getting any BTS records, either.  The one entry
is the artificial record GDB adds to reach the current PC.

It looks like a kernel issue to me.  I'm discussing it with Intel kernel
developers.  This might take a bit of time.

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