Re: [sysvinit-devel] init hangs on select()

[Jason]

On 1/28/2011 5:32 AM, Dr. Werner Fink wrote:
> On Thu, Jan 27, 2011 at 01:33:45PM -0700, Jason wrote:
> > I went from kernel 2.6.23.5 to 2.6.37 and init hangs before
> > switching to run level 3.  It executes all initial system scripts
> > via "rc sysinit" at sysinit runlevel but never switches to run level
> > 3 which is my initdefault.  This was first seen with sysvinit-2.86
> > so I upgraded to sysvinit-2.88dsf and still I have the same issue.
> >
> > I then enabled debug and added my own debug statements and found
> > that it's hanging on select() inside check_init_fifo().  Why would
> > select() hang when it has a five second timeout set?
> >
> > Kernels 2.6.23.17 and 2.6.25.20 work fine.  Kernels 2.6.35.10,
> > 2.6.37, 2.6.38-rc1 all have the init hang issue.
> >
> > I am compiling init on a 2.6.23.5 system so I don't know if that is
> > an issue or not.  The system has gcc 4.0.1 and glibc-2.3.5.  Is
> > there a requirement to have glibc compiled against newer kernel
> > headers?
> IMHO this could be also a kernel problem. On the other hand
> here we have 2.6.37 around with glibc 2.11.3 in this does boot
> with sysvinit 2.88dsf all conmpiled with gcc 4.5.1
>
>     Werner
It looks like it has something to do with udev.  If I use the kernel 
option CONFIG_SYSFS_DEPRECATED, sysvinit does not hang on kernel 
2.6.35.10 and earlier but still hangs with 2.6.37 or 2.6.38-rc1.  I 
tried to update udevd but my glibc is too old.  So at this point I would 
say my only option is to rebuild my Linux system with an updated toolchain.