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Message-ID: <CAJzaN5ofshg4KseGhOL2LSLDQNoAHC6Ve25gpgWU69bEfBq1fw@mail.gmail.com>
Date:   Thu, 2 May 2019 08:45:34 +0200
From:   Bartosz Szczepanek <barteks7r@...il.com>
To:     Matthew Garrett <mjg59@...gle.com>
Cc:     linux-integrity <linux-integrity@...r.kernel.org>,
        Peter Huewe <peterhuewe@....de>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Roberto Sassu <roberto.sassu@...wei.com>,
        linux-efi <linux-efi@...r.kernel.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ThiƩbaud Weksteen <tweek@...gle.com>
Subject: Re: [PATCH V5 2/4] tpm: Reserve the TPM final events table

Second patch tries to unmap "mapping" which is not declared. I'm on
top of jjs/master and your TPM_MEMREMAP patches are already there, so
the first patch applied cleanly. Using it, kernel still panicked on
boot:

EFI stub: Booting Linux Kernel...
EFI stub: EFI_RNG_PROTOCOL unavailable, no randomness supplied
EFI stub: Using DTB from configuration table
EFI stub: Exiting boot services and installing virtual address map...
[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x420f5162]
[    0.000000] Linux version 5.1.0-rc2+ (root@...alhost.localdomain)
(gcc version 7.3.1 20180712 (Red Hat 7.3.1-6) (GCC)) #78 SMP Wed May 1
01:05:38 EDT 2019
[    0.000000] earlycon: pl11 at MMIO 0x0000000402020000 (options '115200n8')
[    0.000000] printk: bootconsole [pl11] enabled
[    0.000000] efi: Getting EFI parameters from FDT:
[    0.000000] efi: EFI v2.60 by Cavium Inc.
TX2-FW-Release-7.2-build_08-0-g14f8c5bf8a Apr 15 2019 18:51:41
[    0.000000] efi:  TPMFinalLog=0xed5f0000  SMBIOS=0xfad90000  SMBIOS
3.0=0xed530000  ACPI 2.0=0xeda90000  ESRT=0xfafdb218
MEMATTR=0xf8489018  TPMEventLog=0xedaa9018  MEMRESERVE=0xedaa8018
[    0.000000] Unhandled fault at 0xffff7dfffe77a018
[    0.000000] Mem abort info:
[    0.000000]   ESR = 0x96000003
[    0.000000]   Exception class = DABT (current EL), IL = 32 bits
[    0.000000]   SET = 0, FnV = 0
[    0.000000]   EA = 0, S1PTW = 0
[    0.000000] Data abort info:
[    0.000000]   ISV = 0, ISS = 0x00000003
[    0.000000]   CM = 0, WnR = 0
[    0.000000] swapper pgtable: 4k pages, 48-bit VAs, pgdp = (____ptrval____)
[    0.000000] [ffff7dfffe77a018] pgd=0000000081b12003
[    0.000000] ------------[ cut here ]------------
[    0.000000] kernel BUG at arch/arm64/mm/fault.c:189!
[    0.000000] Internal error: Oops - BUG: 0 [#1] SMP
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.1.0-rc2+ #78
[    0.000000] pstate: 60400089 (nZCv daIf +PAN -UAO)
[    0.000000] pc : show_pte+0x1d0/0x1f0
[    0.000000] lr : show_pte+0x88/0x1f0
[    0.000000] sp : ffff000011533b30
[    0.000000] x29: ffff000011533b30 x28: ffff0000115473c0
[    0.000000] x27: ffff000011542500 x26: ffff7dfffe73a010
[    0.000000] x25: 0000000000000018 x24: 0000000000000025
[    0.000000] x23: 00000000000000fb x22: ffff0000117fc000
[    0.000000] x21: ffff000010f32000 x20: ffffffffffffffff
[    0.000000] x19: ffff7dfffe77a018 x18: ffffffffffffffff
[    0.000000] x17: 0000000000000000 x16: 0000000000000000
[    0.000000] x15: ffff00001153d708 x14: ffff00001172f420
[    0.000000] x13: ffff00001172f069 x12: ffff000011568000
[    0.000000] x11: ffff000011533800 x10: ffff000011533800
[    0.000000] x9 : ffff00001153ef58 x8 : 303030303030303d
[    0.000000] x7 : 646770205d383130 x6 : ffff00001172e7ff
[    0.000000] x5 : 0000000000000000 x4 : 0000000000000000
[    0.000000] x3 : 0000000000000000 x2 : 0000000000000000
[    0.000000] x1 : 0000000081b12000 x0 : 0000000000000ff8
[    0.000000] Process swapper (pid: 0, stack limit = 0x(____ptrval____))
[    0.000000] Call trace:
[    0.000000]  show_pte+0x1d0/0x1f0
[    0.000000]  do_mem_abort+0xa8/0xb0
[    0.000000]  el1_da+0x20/0xc4
[    0.000000]  efi_tpm_eventlog_init+0xe8/0x268
[    0.000000]  efi_config_parse_tables+0x180/0x29c
[    0.000000]  uefi_init+0x1d0/0x22c
[    0.000000]  efi_init+0x90/0x180
[    0.000000]  setup_arch+0x1f4/0x5fc
[    0.000000]  start_kernel+0x90/0x51c
[    0.000000] Code: 910d6000 94030b20 17ffffe6 d503201f (d4210000)
[    0.000000] random: get_random_bytes called from
print_oops_end_marker+0x54/0x70 with crng_init=0
[    0.000000] ---[ end trace 0000000000000000 ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
[    0.000000] ---[ end Kernel panic - not syncing: Attempted to kill
the idle task! ]---

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