Morten Linderud 2115c14c93 tpm/eventlog: Don't abort tpm_read_log on faulty ACPI address ... [ Upstream commit 80a6c216b1 ] tpm_read_log_acpi() should return -ENODEV when no eventlog from the ACPI table is found. If the firmware vendor includes an invalid log address we are unable to map from the ACPI memory and tpm_read_log() returns -EIO which would abort discovery of the eventlog. Change the return value from -EIO to -ENODEV when acpi_os_map_iomem() fails to map the event log. The following hardware was used to test this issue: Framework Laptop (Pre-production) BIOS: INSYDE Corp, Revision: 3.2 TPM Device: NTC, Firmware Revision: 7.2 Dump of the faulty ACPI TPM2 table: [000h 0000 4] Signature : "TPM2" [Trusted Platform Module hardware interface Table] [004h 0004 4] Table Length : 0000004C [008h 0008 1] Revision : 04 [009h 0009 1] Checksum : 2B [00Ah 0010 6] Oem ID : "INSYDE" [010h 0016 8] Oem Table ID : "TGL-ULT" [018h 0024 4] Oem Revision : 00000002 [01Ch 0028 4] Asl Compiler ID : "ACPI" [020h 0032 4] Asl Compiler Revision : 00040000 [024h 0036 2] Platform Class : 0000 [026h 0038 2] Reserved : 0000 [028h 0040 8] Control Address : 0000000000000000 [030h 0048 4] Start Method : 06 [Memory Mapped I/O] [034h 0052 12] Method Parameters : 00 00 00 00 00 00 00 00 00 00 00 00 [040h 0064 4] Minimum Log Length : 00010000 [044h 0068 8] Log Address : 000000004053D000 Fixes: 0cf577a03f ("tpm: Fix handling of missing event log") Tested-by: Erkki Eilonen <erkki@bearmetal.eu> Signed-off-by: Morten Linderud <morten@linderud.pw> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-17 08:48:59 +01:00
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acpi.c	tpm/eventlog: Don't abort tpm_read_log on faulty ACPI address	2023-03-17 08:48:59 +01:00
common.c	tpm: vtpm_proxy: Avoid reading host log when using a virtual device	2021-04-14 16:30:30 +03:00
common.h	tpm: Move eventlog declarations to its own header	2018-05-09 14:45:46 +03:00
efi.c	tpm: efi: Use local variable for calculating final log size	2021-04-14 16:30:29 +03:00
of.c	tpm: of: Handle IBM,vtpm20 case when getting log parameters	2020-03-13 17:31:26 +02:00
tpm1.c	tpm: Fix fall-through warnings for Clang	2021-02-16 10:40:27 +02:00
tpm2.c	tpm: eventlog: Replace zero-length array with flexible-array member	2020-05-22 18:50:12 +03:00