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SubjectRe: [PATCH v12 07/22] selftests/vm: fixed bugs in pkey_disable_clear()
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On 02/21/2018 05:55 PM, Ram Pai wrote:
> --- a/tools/testing/selftests/vm/protection_keys.c
> +++ b/tools/testing/selftests/vm/protection_keys.c
> @@ -461,7 +461,7 @@ void pkey_disable_clear(int pkey, int flags)
> pkey, pkey, pkey_rights);
> pkey_assert(pkey_rights >= 0);
>
> - pkey_rights |= flags;
> + pkey_rights &= ~flags;
>
> ret = pkey_set(pkey, pkey_rights, 0);
> /* pkey_reg and flags have the same format */
> @@ -475,7 +475,7 @@ void pkey_disable_clear(int pkey, int flags)
> dprintf1("%s(%d) pkey_reg: 0x%016lx\n", __func__,
> pkey, rdpkey_reg());
> if (flags)
> - assert(rdpkey_reg() > orig_pkey_reg);
> + assert(rdpkey_reg() < orig_pkey_reg);
> }
>
> void pkey_write_allow(int pkey)

This seems so horribly wrong that I wonder how it worked in the first
place. Any idea?

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