Message ID | 1528936144-6696-4-git-send-email-linuxram@us.ibm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show |
Series | powerpc/pkeys: fixes to pkeys | expand |
Ram Pai <linuxram@us.ibm.com> writes:
> Total number of pkeys calculation is off by 1. Fix it.
Oops.
Fixes: 4fb158f65ac5 ("powerpc: track allocation status of all pkeys")
Cc: stable@vger.kernel.org # v4.16+
cheers
diff --git a/arch/powerpc/mm/pkeys.c b/arch/powerpc/mm/pkeys.c index 6529f4e..b681bec 100644 --- 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);
Total number of pkeys calculation is off by 1. Fix it. CC: Florian Weimer <fweimer@redhat.com> CC: Michael Ellerman <mpe@ellerman.id.au> CC: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> --- arch/powerpc/mm/pkeys.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)