kernel 2.6.4: Bug in JFS file system?

[Andreas Theofilu <andreas@TheosSoft.net>]

Hi to all,

Since kernel 2.6.4 I'm not able to access files with a special character
in the file name, such as the german umlaute. Every attempt to access such
a file gives me the error: cannot stat file

I'm using several partitions with JFS file system and had never seen such
a strange behavior before. The relevant kernel settings are at the bottom
of the mail.

I already unmounted the partition and run fsck on it (fsck.jfs -f
/dev/hda8), but it told me that everything is ok and I'm still not able to
access this files. Also a reboot of the machine didn't change anything. I
booted 2.6.3 again and renamed the files in question (no more special
characters in the file name). Now I can access these files with 2.6.4
also.

Allthough I'm a programmer, I'm not a kernel hacker and don't know where
to start looking for this problem. Could anybody give me a hint where to
start looking?

-------------------------
Kernel 2.6.4 settings (.config)
#
# File systems
#
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
CONFIG_FS_MBCACHE=y
CONFIG_REISERFS_FS=y
# CONFIG_REISERFS_CHECK is not set
# CONFIG_REISERFS_PROC_INFO is not set
CONFIG_JFS_FS=y
CONFIG_JFS_POSIX_ACL=y
# CONFIG_JFS_DEBUG is not set
CONFIG_JFS_STATISTICS=y
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
CONFIG_MINIX_FS=y
# CONFIG_ROMFS_FS is not set
CONFIG_QUOTA=y
# CONFIG_QFMT_V1 is not set
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
CONFIG_AUTOFS_FS=y
CONFIG_AUTOFS4_FS=y

-- 
Andreas Theofilu
http://www.TheosSoft.net/

                     --==| Enjoy the science of Linux! |==--