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a83c68a3bf
linux-stable/drivers/acpi
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Vasily Khoruzhick a83c68a3bf ACPI: FPDT: properly handle invalid FPDT subtables 
Buggy BIOSes may have invalid FPDT subtables, e.g. on my hardware:

S3PT subtable:

7F20FE30: 53 33 50 54 24 00 00 00-00 00 00 00 00 00 18 01  *S3PT$...........*
7F20FE40: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  *................*
7F20FE50: 00 00 00 00

Here the first record has zero length.

FBPT subtable:

7F20FE50:             46 42 50 54-3C 00 00 00 46 42 50 54  *....FBPT<...FBPT*
7F20FE60: 02 00 30 02 00 00 00 00-00 00 00 00 00 00 00 00  *..0.............*
7F20FE70: 2A A6 BC 6E 0B 00 00 00-1A 44 41 70 0B 00 00 00  **..n.....DAp....*
7F20FE80: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  *................*

And here FBPT table has FBPT signature repeated instead of the first
record.

Current code will be looping indefinitely due to zero length records, so
break out of the loop if record length is zero.

While we are here, add proper handling for fpdt_process_subtable()
failures.

Fixes: d1eb86e59b ("ACPI: tables: introduce support for FPDT table")
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
[ rjw: Comment edit, added empty code lines ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-10-03 21:12:22 +02:00
..
acpica ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer 2023-07-10 18:49:16 +02:00
apei APEI: GHES: correctly return NULL for ghes_get_devices() 2023-06-12 19:31:48 +02:00
arm64 Char/Misc driver changes for 6.6-rc1 2023-09-01 09:53:54 -07:00
dptf ACPI: DPTF: Drop stale link from Kconfig help 2022-09-28 17:26:25 +02:00
nfit ACPI: NFIT: Remove unnecessary .remove callback 2023-07-14 18:58:35 +02:00
numa dax/hmem: Move hmem device registration to dax_hmem.ko 2023-02-10 17:33:34 -08:00
pmic ACPI: PMIC: Add comments with DSDT power opregion field names 2023-01-30 16:47:13 +01:00
riscv drivers/acpi: RISC-V: Add RHCT related code 2023-06-01 08:45:04 -07:00
x86 Merge branch 'acpi-pm' 2023-08-25 20:55:47 +02:00
ac.c ACPI: AC: Install Notify() handler directly 2023-07-14 18:58:34 +02:00
acpi_adxl.c
acpi_apd.c ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup() 2023-03-20 18:04:58 +01:00
acpi_cmos_rtc.c ACPI: TAD: Install SystemCMOS address space handler for ACPI000E 2023-08-17 20:01:24 +02:00
acpi_configfs.c ACPI: configfs: Make get_header() to return error pointer 2021-07-16 19:20:28 +02:00
acpi_dbg.c ACPI: debug: Remove the not used function 2020-11-17 18:12:34 +01:00
acpi_extlog.c ACPI: extlog: Fix finding the generic error data for v3 structure 2023-08-17 19:44:22 +02:00
acpi_ffh.c ACPI: FFH: Drop the inclusion of linux/arm-smccc.h 2023-06-12 19:28:20 +02:00
acpi_fpdt.c ACPI: FPDT: properly handle invalid FPDT subtables 2023-10-03 21:12:22 +02:00
acpi_ipmi.c ACPI: IPMI: replace usage of found with dedicated list iterator variable 2022-03-25 18:01:40 +01:00
acpi_lpat.c
acpi_lpit.c ACPI: LPIT: move to use bus_get_dev_root() 2023-03-22 20:25:18 +01:00
acpi_lpss.c ACPI: LPSS: Add pwm_lookup_table entry for second PWM on CHT/BSW devices 2023-05-19 20:17:10 +02:00
acpi_memhotplug.c mm/memory_hotplug: allow memmap on memory hotplug request to fallback 2023-08-21 13:37:48 -07:00
acpi_pad.c ACPI: PAD: mark Zhaoxin CPUs NONSTOP TSC correctly 2023-06-12 19:25:55 +02:00
acpi_pcc.c ACPI: PCC: Setup PCC Opregion handler only if platform interrupt is available 2022-11-23 19:06:56 +01:00
acpi_platform.c ACPI: platform: Move SMB0001 HID to the header and reuse 2023-07-04 19:28:20 +02:00
acpi_pnp.c ACPI: PNP: Introduce list of known non-PNP devices 2023-01-17 12:52:11 +01:00
acpi_processor.c ACPI: processor: Refine messages in acpi_early_processor_control_setup() 2023-07-20 21:05:00 +02:00
acpi_tad.c ACPI: TAD: Install SystemCMOS address space handler for ACPI000E 2023-08-17 20:01:24 +02:00
acpi_video.c ACPI: video: Fix NULL pointer dereference in acpi_video_bus_add() 2023-09-25 11:53:40 +02:00
acpi_watchdog.c ACPI: watchdog: Replace open coded variant of resource_union() 2020-11-17 18:06:29 +01:00
battery.c ACPI: battery: Install Notify() handler directly 2023-07-14 18:58:34 +02:00
bgrt.c ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines 2022-04-22 16:55:33 +02:00
blacklist.c ACPI: blacklist: Unify the message printing 2021-06-07 15:36:45 +02:00
bus.c Merge branch 'acpi-processor' 2023-08-25 20:40:50 +02:00
button.c Merge branches 'acpi-thermal' and 'acpi-button' 2023-06-26 17:20:28 +02:00
container.c ACPI: container: Use acpi_dev_for_each_child() 2022-06-20 20:33:05 +02:00
cppc_acpi.c ACPI: CPPC: Add auto select register read/write support 2023-03-17 19:06:23 +01:00
custom_method.c ACPI: custom_method: fix a possible memory leak 2021-04-28 19:17:54 +02:00
debugfs.c
device_pm.c PCI/ACPI: Account for _S0W of the target bridge in acpi_pci_bridge_d3() 2023-01-13 15:56:10 -06:00
device_sysfs.c ACPI: bus: Constify acpi_companion_match() returned value 2023-06-29 11:40:55 +02:00
dock.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
ec_sys.c ACPI: EC: Mark the ec_sys write_support param as module_param_hw() 2021-12-01 20:19:30 +01:00
ec.c ACPI: EC: Fix acpi_ec_dispatch_gpe() 2023-06-27 17:06:51 +02:00
event.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
evged.c ACPI: GED: fix -Wformat 2020-11-09 19:25:20 +01:00
fan_attr.c ACPI: fan: Convert to use sysfs_emit_at() API 2022-12-06 12:44:14 +01:00
fan_core.c ACPI: fan: Bail out if extract package failed 2022-11-23 19:31:57 +01:00
fan.h ACPI: DPTF: Support Meteor Lake 2022-05-25 15:37:07 +02:00
glue.c ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops 2023-01-10 20:23:48 +01:00
hed.c ACPI: HED: Install Notify() handler directly 2023-07-14 18:58:34 +02:00
internal.h Merge branches 'acpi-scan', 'acpi-tad', 'acpi-extlog' and 'acpi-misc' 2023-08-25 20:49:52 +02:00
ioapic.c ACPI: Silence missing prototype warnings 2022-12-30 19:12:30 +01:00
irq.c ACPI: irq: Fix some kernel-doc issues 2022-11-10 20:21:35 +01:00
Kconfig acpi/prmt: Use EFI runtime sandbox to invoke PRM handlers 2023-08-22 10:39:26 +02:00
Makefile ACPI: Move AMBA bus scan handling into arm64 specific directory 2023-08-01 13:59:25 +02:00
nvs.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
osi.c ACPI: OSI: Remove Linux-HPI-Hybrid-Graphics _OSI string 2022-08-25 20:18:17 +02:00
osl.c ACPI: OSL: Make should_use_kmap() 0 for RISC-V 2023-06-01 08:45:00 -07:00
pci_irq.c ACPI / PCI: fix LPIC IRQ model default PCI IRQ polarity 2022-11-26 12:57:18 +00:00
pci_link.c ACPI/PCI: Remove useless NULL pointer checks 2022-07-27 21:21:27 +02:00
pci_mcfg.c PCI: loongson: Add ACPI init support 2022-07-14 15:25:36 -05:00
pci_root.c PCI/CXL: Export native CXL error reporting control 2023-01-05 13:31:27 -08:00
pci_slot.c
pfr_telemetry.c mm: replace vma->vm_flags direct modifications with modifier calls 2023-02-09 16:51:39 -08:00
pfr_update.c iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
platform_profile.c ACPI: platform-profile: call sysfs_notify() from platform_profile_store() 2021-08-16 18:32:02 +02:00
power.c ACPI: PM: Do not turn of unused power resources on the Toshiba Click Mini 2023-04-27 18:44:43 +02:00
pptt.c ACPI: PPTT: Fix to avoid sleep in the atomic context when PPTT is absent 2023-03-14 20:34:38 +01:00
prmt.c acpi/prmt: Use EFI runtime sandbox to invoke PRM handlers 2023-08-22 10:39:26 +02:00
proc.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
processor_core.c ACPI: processor: LoongArch: Get physical ID from MADT 2023-08-17 18:39:28 +02:00
processor_driver.c ACPI: processor: Reorder acpi_processor_driver_init() 2023-03-22 15:20:38 +01:00
processor_idle.c x86/smpboot: Remove the CPU0 hotplug kludge 2023-05-15 13:44:49 +02:00
processor_pdc.c ACPI: processor: Fix uninitialized access of buf in acpi_set_pdc_bits() 2023-09-18 12:16:16 +02:00
processor_perflib.c ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily 2022-12-30 19:10:02 +01:00
processor_thermal.c ACPI: processor: thermal: Update CPU cooling devices on cpufreq policy changes 2023-03-22 15:20:38 +01:00
processor_throttling.c ACPI: processor: throttling: remove variable count 2022-10-28 19:02:45 +02:00
property.c ACPI: property: Refactor acpi_data_prop_read_single() 2023-03-27 20:48:36 +02:00
reboot.c ACPI: reboot: Unify the message printing 2021-06-07 15:36:46 +02:00
resource.c ACPI: resource: Fix IRQ override quirk for PCSpecialist Elimina Pro 16 M 2023-08-21 12:48:52 +02:00
sbs.c ACPI: SBS: Fix handling of Smart Battery Selectors 2023-03-30 19:01:05 +02:00
sbshc.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
sbshc.h ACPI: Fix whitespace inconsistencies 2020-11-09 19:08:06 +01:00
scan.c IOMMU Updates for Linux v6.6 2023-09-01 16:54:25 -07:00
sleep.c Merge branches 'acpi-scan', 'acpi-pm', 'acpi-resource' and 'acpi-ec' 2023-06-26 16:54:10 +02:00
sleep.h ACPI: s2idle: Add a new ->check() callback for platform_s2idle_ops 2022-09-09 17:37:40 +02:00
spcr.c ACPI: SPCR: Amend indentation 2023-03-27 20:50:28 +02:00
sysfs.c ACPI: sysfs: Enable ACPI sysfs support for CCEL records 2023-03-27 20:43:58 +02:00
tables.c ACPI: tables: Print RINTC information when MADT is parsed 2023-06-01 08:44:59 -07:00
thermal.c thermal: Constify the trip argument of the .get_trend() zone callback 2023-09-11 17:16:40 +02:00
tiny-power-button.c ACPI: tiny-power-button: Eliminate the driver notify callback 2023-06-16 19:48:09 +02:00
utils.c Merge branch 'acpi-uid' 2022-10-03 20:09:22 +02:00
video_detect.c ACPI: video: Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2 2023-08-17 19:29:58 +02:00
viot.c ACPI: VIOT: Initialize the correct IOMMU fwspec 2023-03-30 19:20:42 +02:00
wakeup.c ACPI: Fix whitespace inconsistencies 2020-11-09 19:08:06 +01:00