Lee, Chun-Yi 39d5137085 thermal/int340x_thermal: handle data_vault when the value is ZERO_SIZE_PTR ...

commit 7931e28098 upstream.

In some case, the GDDV returns a package with a buffer which has
zero length. It causes that kmemdup() returns ZERO_SIZE_PTR (0x10).

Then the data_vault_read() got NULL point dereference problem when
accessing the 0x10 value in data_vault.

[   71.024560] BUG: kernel NULL pointer dereference, address:
0000000000000010

This patch uses ZERO_OR_NULL_PTR() for checking ZERO_SIZE_PTR or
NULL value in data_vault.

Signed-off-by: "Lee, Chun-Yi" <jlee@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[ Larry: backport to 5.15.y. Minor conflict resolved due to missing commit 9e5d3d6be6
  thermal: int340x: Consolidate freeing of acpi_buffer pointer ]
Signed-off-by: Larry Bassel <larry.bassel@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-07-17 18:30:48 +02:00

..

int340x_thermal

thermal/int340x_thermal: handle data_vault when the value is ZERO_SIZE_PTR

2025-07-17 18:30:48 +02:00

intel_bxt_pmic_thermal.c

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intel_menlow.c

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intel_pch_thermal.c

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intel_powerclamp.c

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intel_quark_dts_thermal.c

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intel_soc_dts_iosf.c

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intel_soc_dts_iosf.h

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intel_soc_dts_thermal.c

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intel_tcc_cooling.c

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Kconfig

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Makefile

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therm_throt.c

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thermal_interrupt.h

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x86_pkg_temp_thermal.c

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