Messages in this thread | | | Date | Thu, 17 Sep 2020 11:40:55 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/cmdline: Disable instrumentation of cmdline unconditionally |
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On Sun, Sep 06, 2020 at 11:46:37AM -0400, Arvind Sankar wrote: > On 32-bit, cmdline_find_option_bool() is used before paging is enabled, > from check_loader_disabled_bsp() in the early microcode loader. > Instrumentation options that insert accesses to global data will likely > crash or corrupt memory at this point.
What is the use case here, can you trigger an actual crash?
-- Regards/Gruss, Boris.
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