Messages in this thread | | | Subject | Re: x86/fpu/xsave: protection key test failures | From | Dave Hansen <> | Date | Tue, 25 May 2021 17:20:22 -0700 |
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On 5/25/21 5:03 PM, Babu Moger wrote: >> What values do PKRU and the shadow have when the test fails? Is PKRU 0? > It goes back to default value 0x55555554. The test is expecting it to be > 0. Printed them below. > > test_ptrace_of_child()::1346, pkey_reg: 0x0000000055555554 shadow: > 0000000000000000 > protection_keys_64: pkey-helpers.h:127: _read_pkey_reg: Assertion > `pkey_reg == shadow_pkey_reg' failed.
That's backwards (shadow vs pkru) from what I was expecting.
Can you turn on all the debuging?
Just compile with -DDEBUG_LEVEL=5
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