Re: [PATCH] Fix msr check in compat_sys_swapcontext

Paul Mackerras [off-list ref] writes:

we need to use get_user, not __get_user, since we haven't done an
access_ok() check on the address.

The address is always ok since its a compat pointer, see do_setcontext.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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Andreas Schwab writes:

Paul Mackerras [off-list ref] writes:

quoted

we need to use get_user, not __get_user, since we haven't done an
access_ok() check on the address.

The address is always ok since its a compat pointer, see do_setcontext.

OK, since it's inside a CONFIG_PPC64 block.  I'll add a paragraph to
the patch description pointing that out.

Paul.