Re: help with access_process_vm

[Chris Wright]

* Fabiano Ramos (fabiano.ramos@xxxxxxxxx) wrote:
> But the first time a call access_process_vm, dmesg shows me:
>      
> Debug: sleeping function called from invalid context at include/linux/rwsem.h:43
> in_atomic():0, irqs_disabled():1
>  [<c01145ac>] __might_sleep+0x8c/0xa0
>  [<c011c69b>] access_process_vm+0x4b/0x1d0
>  [<c010c830>] do_debug_new+0xd0/0x190
>  [<c038c755>] schedule+0x275/0x460
>  [<c0105c2d>] error_code+0x2d/0x40
> 
> What I am missing?

The access_process_vm() call is doing down_read(), which could sleep,
with irqs disabled.  That's what's wrong.

thanks,
-chris
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