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Re: [PATCHv4] Enable -fsanitize-recover for KASan


On Thu, Oct 23, 2014 at 11:11:29AM +0400, Yury Gribov wrote:
> Hi all,
> 
> On 09/29/2014 09:21 PM, Yury Gribov wrote:
> >>>This patch enables -fsanitize-recover for KASan by default. This causes
> >>>KASan to continue execution after error in case of inline
> >>>instrumentation. This feature is needed because
> >>>- reports during early bootstrap won't even be printed
> >>>- needed to run all tests w/o rebooting machine for every test
> >>>- needed for interactive work on desktop
> >
> >This is the third version of patch which renames -fsanitize-recover to
> >-fubsan-recover and introduces -fasan-recover (enabled by default for
> >KASan). It also moves flag handling to finish_options per Jakub's request.
> 
> A new version of patch based upon Jakub's recent changes to
> -fsanitize-recover=.  I've renamed __asan_report_recover_load* to
> __asan_report_load*_noabort to match UBSan's style.
> 
> Note that currently -fsanitize=kernel-address
> -fno-sanitize-recover=kernel-address won't work as expected because we miss
> __asan_load*_abort family of functions in libasan.

I thought __asan_* functions are provided by the kernel, not libasan, for
-fsanitize=kernel-address.  Or is kernel linked with real libasan.a or
some stripped down version thereof?

	Jakub


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