Fatal trap 12 on booting GERERIC kernel
joerg at britannica.bec.de
Thu Aug 11 02:30:54 PDT 2005
On Thu, Aug 11, 2005 at 05:46:04PM +0900, YONETANI Tomokazu wrote:
> On Thu, Aug 11, 2005 at 05:20:50PM +0900, Noritoshi Demizu wrote:
> > > The latest GENERIC kernel fails to boot on my machine.
> > When I reported this problem, I chose multi user mode in my all trys.
> > I just find that, if I choose single user mode, the '#' prompt of
> > /bin/sh is successfully displayed. And the "pwd" command successfully
> > prints "/". But when I typed "ls", the kernel paniced in generic_bzero.
> > I did buildworld & installworld both yesterday and today. Yesterdays'
> > GENERIC kernel works fine with both yesterdays' and today's userland.
> > But today's GENERIC kernel does not work with yesterdays' nor today's
> > userland.
> Yes, I'm seeing this too, and I suspect that the calculation in
> vop_write_dirent() is wrong; I inserted a printf() before the bzero()
> and found that the second argument, or
> dp->d_reclen - offsetof(struct dirent, d_name) - dp->d_namlen,
> can be negative. Try reverting the users of vop_write_dirent()
> to the previous revisions and see if it helps.
Found it. In the full dirent tree, the equivalent of GENERIC_DIRSIZ
takes the string length directly, while GENERIC_DIRSIZ takes it from
dirent. That field wasn't initialised.
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