modprobe doesn't work with MIPS codesourcery

Hello,

I'd like to use buildroot-2011.05 with Linux2.6.28 on the MIPS CPU system.

As for the toolchain, I planed to use "CodeSourcery MIPS 2011.03". So I changed options as follows from default settings:
Target Architecture (mipsel)
Target Architecture Variant (mips 32r2) Toolchain type (External toolchain) Toolchain (CodeSourcery MIPS 2011.03) Filesystem images (jffs2 root filesystem)

As the result, the build process itself has been finished successfully. But when the Linux boot with this image, the following messages was displayed and boot process was failed.

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VFS: Mounted root (jffs2 filesystem) readonly. Freeing prom memory: 956k freed
Freeing unused kernel memory: 136k freed
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
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If I could have any suggestions to solve this problem, it would very helpful for me.

BTW, when I used crosstool-ng as toolchain, Linux booted without problem.

Best Regards,
Satoshi Matsushita