Created attachment 365889 [details]
Logfile of "strace -f make -s"

Description of problem:

When running "make" in directories on NFS4 mounted file systems,
getcwd() fails occasionally:


Version-Release number of selected component (if applicable):
kernel-2.6.30.8-64.fc11.x86_64

How reproducible:

The problem is stable, it happened reliably with every test I ran so far.

Steps to Reproduce:
1. Download and unpack ftp://ftp.denx.de/pub/u-boot/u-boot-2009.08.tar.bz2
2. Install some cross tool chain, say ELDK.1s
   Then "export CROSS_COMPILE=ppc_6xx-"
3. "make mrproper; make A3000_config; make -s"
  
Actual results:

-> make -s
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory


Expected results:

No such error messages

Additional info:

/etc/exports on NFS4 server:
============================

/srv/nfs4       10.0.0.0/255.0.0.0(rw,insecure,no_subtree_check,nohide,sync,fsid=0)     192.168.0.0/255.255.0.0(rw,insecure,no_subtree_check,nohide,sync,fsid=0)
/srv/nfs4/home  10.0.0.0/255.0.0.0(rw,insecure,no_subtree_check,nohide,sync)            192.168.0.0/255.255.0.0(rw,insecure,no_subtree_check,nohide,sync)

/etc/fstab on client:
=====================

castor:/                /mnt/castor             nfs4    rw,rsize=8192,wsize=8192,intr 00
/mnt/castor/home        /home                   none    rw,bind         0 0

-> mount
...
castor:/ on /mnt/castor type nfs4 (rw,rsize=8192,wsize=8192,intr,clientaddr=192.168.1.4,addr=192.168.1.2)
/mnt/castor/home on /home type none (rw,bind)


I'm running the tests in a subdirectory of "/home"

Part of the Makefile which contains the failing shell commands:

...
$(obj).depend:  $(src)Makefile $(TOPDIR)/config.mk $(SRCS)
                @rm -f $@
                @for f in $(SRCS); do \
                        g=`basename $$f | sed -e 's/\(.*\)\.\w/\1.o/'`; \
                        $(CC) -M $(HOSTCFLAGS) $(CPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \ 
                done
...

The shell running the "for" loop is failing because of the getcwd()
issue - see attached strace log. Look for pid 14647.



Notes:

1) Originally I had cachefilesd running and the "fsc" mount option
   on; disabling both (and rebooting) did not change the behaviour.

2) This seems to be a more generic problem; this gentoo bug report
   looks suspiciously similar:
   http://bugs.gentoo.org/show_bug.cgi?id=289022

3) Mounting the same file system with NFS3 makes the problem go aways.