Re: Last version of of citrix Client core dumps (Was Re: How to run Microsoft Internet Explorer on NetBSD?)

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Fri, Feb 26, 2016 at 09:22:38AM +0100, Stephan wrote:
> I still recommend Receiver for HTML5 in this case.
> 
> The dump looks like a mess and eventually gdb is unable to process
> this dump of a Linux binary on NetBSD correctly. It would be
> interesting to know what is mapped at 0xba90004d. You could break at
> that adress (b *0xba90004d) and check with pmap. Also, what´s the
> corresponding instruction (x/i 0xba90004d)?

Getting to stop while running for the pmap is proving interesting (need
authentication via pnbrowse before dump in wfica).

The instruction seems to always be the same though:

Core was generated by `wfica'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f7fee73a9f4 in ?? ()
[Current thread is 1 (process 27767)]
(gdb) x/20i 0x00007f7fee73a9e8
   0x7f7fee73a9e8:      add    %al,(%rax)
   0x7f7fee73a9ea:      add    %al,(%rax)
   0x7f7fee73a9ec:      add    %al,(%rax)
   0x7f7fee73a9ee:      add    %al,(%rax)
   0x7f7fee73a9f0:      push   %rsi
   0x7f7fee73a9f1:      rex.R
   0x7f7fee73a9f2:      rex.RB push %r13
=> 0x7f7fee73a9f4:      rex.RB
   0x7f7fee73a9f5:      rex.WRB
   0x7f7fee73a9f6:      cs rex.R
   0x7f7fee73a9f8:      rex.WR
   0x7f7fee73a9f9:      rex.WR add %r8b,(%rax)
   0x7f7fee73a9fc:      add    %dl,0x75(%rcx)
   0x7f7fee73a9ff:      gs jne 0x7f7fee73aa67
   0x7f7fee73aa02:      add    %al,(%rax)
   0x7f7fee73aa04:      add    %al,(%rax)
   0x7f7fee73aa06:      add    %al,(%rax)
   0x7f7fee73aa08:      stc    
   0x7f7fee73aa09:      mov    %al,%al
   0x7f7fee73aa0b:      idivl  0x7f(%rdi)


Cheers,

Patrick