Re: Corrupted symbol names on lockstat

[Paul Goyette <paul%vps1.whooppee.com@localhost>]

On Mon, 15 Dec 2014, Ryota Ozaki wrote:

> On Mon, Dec 15, 2014 at 3:38 PM, Ryota Ozaki <ozaki-r%netbsd.org@localhost> wrote:
> > Hi,
> >
> > It seems ksyms (or something) is broken in a recent commit.
> > lockstat shows corrupted caller names like the following
> > output:
> >
> > ----
> > $ sudo lockstat sleep 10
> > Password:
> > Elapsed time: 9.99 seconds.
> >
> > -- Adaptive mutex spin
> >
> > Total%  Count   Time/ms          Lock                       Caller
> > ------ ------- --------- ---------------------- ------------------------------
> >  95.76      35      0.22                              <all>
> >  91.23      30      0.21                              +103
> >   3.41       2      0.01                              +5f
> >   1.12       3      0.00                              ?+71
> >   4.24       2      0.01 fffffe827fba0f40       +1c
> >
> > -- Spin mutex spin
> >
> > Total%  Count   Time/ms          Lock                       Caller
> > ------ ------- --------- ---------------------- ------------------------------
> >  95.16      18      0.03 fffffe827f732640       <all>
> >  92.41      17      0.02 fffffe827f732640       +95
> >   2.76       1      0.00 fffffe827f732640       +6f
> >   2.72       1      0.00 fffffe827f7355c0       +103
> >   2.12       1      0.00 fffffe827f7359c0       +103
> > ----
> >
> > I tested on a latest HEAD of -current kernel and userland
> > (self-build) and recent releng binaries built at 201412141850Z.
> > Both are amd64.
>
> The releng binaries at 201412131840Z works so the criminal
> is a commit between 201412131840Z and 201412141850Z :)

The only commit I see that appears as though it might be remotely 
associated is:

Module Name:    src
Committed By:   christos
Date:           Sun Dec 14 18:14:15 UTC 2014

Modified Files:
        src/sys/sys: ksyms.h

Log Message:
Leave section 0 empty. Now gdb should recognize our dumped ksyms files.



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