[Crash-utility] Crash kmem error

Hi, When I used crash based off of a mainline kernel to run kmem, it failed. For your information, the detailed description of the problem is as follows. Version-Release number of selected component: # uname -a Linux hp-rx8640-02.rhts.eng.bos.redhat.com 2.6.39-rc6+ #2 SMP Mon May 9 23:05:14 EDT 2011 ia64 ia64 ia64 GNU/Linux Steps to Reproduce: 1、update the old kernel to the mainline kernel 2.6.39-rc6+ 2、install crash 3、# crash <where the mainline kernel tree is>/vmlinux 4、crash> kmem -s CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE kmem: invalid structure member offset: slab_list FILE: memory.c LINE: 9588 FUNCTION: verify_slab_v2() [/usr/bin/crash] error trace: 40000000000db7c0 => 40000000000ca450 => 40000000000c8ea0 => 40000000001c74a0 40000000001c74a0: OFFSET_verify+224 40000000000c8ea0: verify_slab_v2+448 40000000000ca450: do_slab_chain_percpu_v2_nodes+4208 40000000000db7c0: dump_kmem_cache_percpu_v2+3536 kmem: invalid structure member offset: slab_list FILE: memory.c LINE: 9588 FUNCTION: verify_slab_v2() Best Regards, Qiannan Cui