BUG: failure at mm/rmap.c:522/page_remove_rmap()!
Kernel panic - not syncing: BUG!

EIP: 0073:[<08319e3f>] CPU: 0 Not tainted ESP: 007b:b9ffda10 EFLAGS: 00010202
    Not tainted
EAX: 08b31758 EBX: 0845306c ECX: 00000048 EDX: 08b31758
ESI: 086a4580 EDI: 00000158 EBP: b9ffda30 DS: 007b ES: 007b
8a8dfabc:  [<800519a0>] notifier_call_chain+0x2a/0x40
8a8dfad8:  [<8003ef57>] panic+0x70/0x102
8a8dfaf0:  [<80076e1d>] try_to_unmap_one+0x0/0x1ea
8a8dfb04:  [<800714ab>] do_wp_page+0x138/0x39b
8a8dfb2c:  [<80072501>] __handle_mm_fault+0x1c0/0x1e6
8a8dfb60:  [<8001e703>] handle_page_fault+0x117/0x229
8a8dfba4:  [<8001e995>] segv+0x9c/0x2cb
8a8dfbc8:  [<80082c79>] sys_read+0x7e/0x80
8a8dfbf0:  [<80022bed>] handle_syscall+0x12d/0x138
8a8dfc54:  [<80033a77>] get_skas_faultinfo+0x35/0x93
8a8dfc70:  [<80033b30>] handle_segv+0x5b/0x62
8a8dfc94:  [<800341c0>] userspace+0x1f5/0x21e
8a8dfcf0:  [<80022808>] fork_handler+0xef/0xff
8a8dfd1c:  [<8039a828>] __restore+0x0/0x8
8a8dfd5c:  [<8039aa81>] kill+0x11/0x20