Hi,
Is it possible for the kernel to access the user-stack data of a
task different from "current" ? ( This is needed for stack-dump as
well as backtrace. )
I thought the answer is "no". ( Kernel sees memory through the
page-table of "current" )
But I found few places in kernel where this is done. ( eg:
debug_rt_mutex_print_deadlock() in rtmutex-debug.c )
What is the explanation ?
thanks
shankar
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