[Crash-utility] crash version 4.0-3.9 is available

Dave Anderson anderson at redhat.com
Thu Nov 9 21:10:02 UTC 2006


>
> > crash> dis common_interrupt
> > 0xffffffff80109b34 <common_interrupt>:  cld
> > 0xffffffff80109b35 <common_interrupt+1>:        sub    $0x48,%rsp
> > 0xffffffff80109b39 <common_interrupt+5>:        mov    %rdi,0x40(%rsp)
> > 0xffffffff80109b3e <common_interrupt+10>:       mov    %rsi,0x38(%rsp)
> > 0xffffffff80109b43 <common_interrupt+15>:       mov    %rdx,0x30(%rsp)
> > 0xffffffff80109b48 <common_interrupt+20>:       mov    %rcx,0x28(%rsp)
> > 0xffffffff80109b4d <common_interrupt+25>:       mov    %rax,0x20(%rsp)
> > 0xffffffff80109b52 <common_interrupt+30>:       mov    %r8,0x18(%rsp)
> > 0xffffffff80109b57 <common_interrupt+35>:       mov    %r9,0x10(%rsp)
> > 0xffffffff80109b5c <common_interrupt+40>:       mov    %r10,0x8(%rsp)
> > 0xffffffff80109b61 <common_interrupt+45>:       mov    %r11,(%rsp)
> > 0xffffffff80109b65 <common_interrupt+49>:
> >     lea    0xffffffffffffffd0(%rsp),%rdi
> > 0xffffffff80109b6a <common_interrupt+54>:       push   %rbp
> > 0xffffffff80109b6b <common_interrupt+55>:       mov    %rsp,%rbp
> >
> > Thanks
> > Rachita
>
> Unbelievable -- nice catch!
>
> I would have thought since the output of the disassembly
> was changed to a temporary file instead of stdout, that there
> wouldn't be any line-wrap applied by gdb behind the scenes.
>
> And as luck would have it, I did my testing in a window
> larger than 80-columns...


Hi Rachita,

Fixed in 4.0-3.11 (the only change from 4.0-3.9 is attached).

In fact, while testing in a 30-column window, I found another
gdb output problem where an asterisk (pointer) in a data structure
declaration got dropped for some reason, causing next_online_pgdat()
to fail.  Anyway, setting the gdb line width to unlimited fixes
both issues.

Thanks again for catching this,
  Dave


--- gdb_interface.c     11 Oct 2006 13:14:35 -0000      1.34
+++ gdb_interface.c     8 Nov 2006 21:57:06 -0000       1.35
@@ -239,6 +239,11 @@
        sprintf(req->buf, "set height 0");
        gdb_interface(req);

+       req->command = GNU_PASS_THROUGH;
+       req->name = NULL, req->flags = 0;
+       sprintf(req->buf, "set width 0");
+       gdb_interface(req);
+
        /*
         *  Patch gdb's symbol values with the correct values from either
         *  the System.map or non-debug vmlinux, whichever is in effect.

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