Andrey Ryabinin 0e311d237d x86/mm: Don't free P4D table when it is folded at runtime ... When the P4D page table layer is folded at runtime, the p4d_free() should do nothing, the same as in <asm-generic/pgtable-nop4d.h>. It seems this bug should cause double-free in efi_call_phys_epilog(), but I don't know how to trigger that code path, so I can't confirm that by testing. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org # 4.17 Fixes: 98219dda2a ("x86/mm: Fold p4d page table layer at runtime") Link: http://lkml.kernel.org/r/20180625102427.15015-1-aryabinin@virtuozzo.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-06-26 09:21:48 +02:00
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asm	x86/mm: Don't free P4D table when it is folded at runtime	2018-06-26 09:21:48 +02:00
uapi/asm	Merge branch 'linus' into timers/2038	2018-05-19 13:55:40 +02:00