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My environment is:

VMware workstation 8

CentOS 6.3, kernel 2.6.32-279.el6.i686

Btrfs v0.19

Sorry i can't use the images for the panic because my reputation is low.

Call Trace
? panic
? oops_end
? do_invalid_op
? do_invalid_op
? btrfs_del_root
? btrfs_header_generation
? btrfs_free_tree_block
? kmap_atomic
? map_private_extent_buffer
? btrfs_set_path_blocking
? error_code
? btrfs_del_root
? btrfs_drop_snapshot
? btrfs_clean_old_snapshots
? cleaner_kthread
? kthread
? kthread
? kernal_thread_helper
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2  
add a link without embedding it and someone will probably get it fixed up for you –  Journeyman Geek Nov 27 '12 at 3:09
    
I use text for the error- call trace –  Yifan Wang Nov 27 '12 at 3:12
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