[<mem>]?__find_get_block
[<mem>]submit_bio
[<mem>]submit_bh
[<mem>]__ext3_get_inode_loc
[<mem>]ext3_iget
[<mem>]ext3_lookup
[<mem>]do_lookup
[<mem>]do_last
[<mem>]do_flip_open
[<mem>]?anon_vma_chain_free
[<mem>]?unmap_region
[<mem>]?alloc_fd
[<mem>]?strncpy_from_user
[<mem>]do_sys_open
[<mem>]sys_open
[<mem>]system_call_fastpath
Code: ff ff ...
RIP [<mem>]__rb_rotate_left
RSP <mem>
--[end of trace]
note:modprobe exited with preempt_count 1