Re: [PATCH] powerpc/mm: Fix missing KUAP disable in flush_coherent_icache()

2020-03-03 Thread Michael Ellerman
Christophe Leroy writes: > Le 03/03/2020 à 13:59, Michael Ellerman a écrit : >> We received a report of strange kernel faults which turned out to be >> due to a missing KUAP disable in flush_coherent_icache() called >> from flush_icache_range(). >> >> The fault looks like: >> >>Kernel attemp

Re: [PATCH] powerpc/mm: Fix missing KUAP disable in flush_coherent_icache()

2020-03-03 Thread Christophe Leroy
Le 03/03/2020 à 13:59, Michael Ellerman a écrit : We received a report of strange kernel faults which turned out to be due to a missing KUAP disable in flush_coherent_icache() called from flush_icache_range(). The fault looks like: Kernel attempted to access user page (7fffc30d9c00) - exp