4.18-stable review patch. If anyone has any objections, please let me know.
------------------ From: Ram Pai <[email protected]> commit fe6a2804e65969a574377bdb3605afb79e6091a9 upstream. Total number of pkeys calculation is off by 1. Fix it. Fixes: 4fb158f65ac5 ("powerpc: track allocation status of all pkeys") Cc: [email protected] # v4.16+ Signed-off-by: Ram Pai <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/powerpc/mm/pkeys.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/mm/pkeys.c +++ b/arch/powerpc/mm/pkeys.c @@ -92,7 +92,7 @@ int pkey_initialize(void) * arch-neutral code. */ pkeys_total = min_t(int, pkeys_total, - (ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)); + ((ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)+1)); if (!pkey_mmu_enabled() || radix_enabled() || !pkeys_total) static_branch_enable(&pkey_disabled);
