I saw this warning [1] while a process was dumping core. Hardware is a
generic ia64 4-way Itanium 2 Intel tiger 4 system.

--- [1]

Debug: sleeping function called from invalid context at
include/linux/rwsem.h:43
in_atomic():1, irqs_disabled():0

Call Trace:
 [<a00000010001b6e0>] show_stack+0x80/0xa0
                                sp=e0000000369ef8b0 bsp=e0000000369e9460
 [<a00000010009bf30>] __might_sleep+0x1b0/0x220
                                sp=e0000000369efa80 bsp=e0000000369e9438
 [<a0000001000bb690>] access_process_vm+0x150/0x540
                                sp=e0000000369efa90 bsp=e0000000369e9380
 [<a0000001000381a0>] ia64_sync_user_rbs+0xa0/0xe0
                                sp=e0000000369efab0 bsp=e0000000369e9350
 [<a00000010001ceb0>] do_copy_task_regs+0xd0/0x3e0
                                sp=e0000000369efac0 bsp=e0000000369e92e8
 [<a00000010001d3b0>] dump_task_regs+0x70/0xc0
                                sp=e0000000369efae0 bsp=e0000000369e92c8
 [<a0000001001d7130>] elf_dump_thread_status+0xd0/0x240
                                sp=e0000000369efcb0 bsp=e0000000369e9258
 [<a0000001001d86b0>] elf_core_dump+0x1410/0x1540
                                sp=e0000000369efcb0 bsp=e0000000369e9160
 [<a000000100180770>] do_coredump+0x590/0x620
                                sp=e0000000369efd50 bsp=e0000000369e9108
 [<a0000001000c94e0>] get_signal_to_deliver+0x700/0xcc0
                                sp=e0000000369efda0 bsp=e0000000369e9098
 [<a0000001000425d0>] ia64_do_signal+0xb0/0x420
                                sp=e0000000369efda0 bsp=e0000000369e9000
 [<a00000010001c0f0>] do_notify_resume_user+0x110/0x120
                                sp=e0000000369efe20 bsp=e0000000369e8fd0
 [<a0000001000129c0>] notify_resume_user+0x40/0x60
                                sp=e0000000369efe20 bsp=e0000000369e8f80
 [<a0000001000128f0>] skip_rbs_switch+0xd0/0xe0
                                sp=e0000000369efe30 bsp=e0000000369e8f68

-- 
Daniel J Blueman

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