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linux/drivers/acpi
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Christophe JAILLET 6b413d52f6 ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias() 
[ Upstream commit 48cf49d319 ]

snprintf() does not return negative values on error.

To know if the buffer was too small, the returned value needs to be
compared with the length of the passed buffer. If it is greater or
equal, the output has been truncated, so add checks for the truncation
to create_pnp_modalias() and create_of_modalias(). Also make them
return -ENOMEM in that case, as they already do that elsewhere.

Moreover, the remaining size of the buffer used by snprintf() needs to
be updated after the first write to avoid out-of-bounds access as
already done correctly in create_pnp_modalias(), but not in
create_of_modalias(), so change the latter accordingly.

Fixes: 8765c5ba19 ("ACPI / scan: Rework modalias creation when "compatible" is present")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
[ rjw: Merge two patches into one, combine changelogs, add subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2023-11-20 11:08:16 +01:00
..
acpica ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer 2023-09-23 11:09:55 +02:00
apei ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init() 2022-11-10 18:15:34 +01:00
arm64 perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 2023-09-23 11:09:55 +02:00
dptf ACPI: DPTF: Add new PCH FIVR methods 2021-08-04 18:08:50 +02:00
nfit ACPI: NFIT: fix a potential deadlock during NFIT teardown 2023-03-03 11:45:52 +01:00
numa ACPI: HMAT: Fix initiator registration for single-initiator systems 2022-12-08 11:28:45 +01:00
pmic ACPI: PMIC: Fix intel_pmic_regs_handler() read accesses 2021-11-18 19:17:06 +01:00
x86 ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects 2023-09-23 11:09:55 +02:00
ac.c ACPI: AC: Quirk GK45 to skip reading _PSR 2021-11-18 19:16:19 +01:00
acpi_adxl.c ACPI/ADXL: Add address translation interface using an ACPI DSM 2018-10-16 10:03:00 +02:00
acpi_amba.c ACPI: AMBA: Fix resource name in /proc/iomem 2021-06-30 20:01:10 +02:00
acpi_apd.c serial: 8250_dw: Add device HID for new AMD UART controller 2021-05-13 17:08:42 +02:00
acpi_cmos_rtc.c ACPI: cmos_rtc: Using pr_fmt() and remove PREFIX 2021-06-07 15:36:45 +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: Handle multiple records 2022-10-29 10:12:55 +02:00
acpi_fpdt.c ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address 2022-10-26 12:35:30 +02:00
acpi_ipmi.c ACPI: ipmi: Remove address space handler in error path 2021-05-24 16:27:34 +02:00
acpi_lpat.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
acpi_lpit.c ACPI: LPIT: Put the low power idle table after using it 2020-05-09 11:29:16 +02:00
acpi_lpss.c ACPI: LPSS: Fix missing check in register_device_clock() 2022-08-17 14:23:03 +02:00
acpi_memhotplug.c ACPI: memhotplug: use a single static memory group for a single memory device 2021-09-08 11:50:23 -07:00
acpi_pad.c ACPI: processor: Replace deprecated CPU-hotplug functions 2021-08-04 20:25:54 +02:00
acpi_platform.c ACPI: platform: Remove ACPI_MODULE_NAME() 2020-09-25 18:25:51 +02:00
acpi_pnp.c ACPI: PNP: compare the string length in the matching_id() 2020-12-15 19:30:49 +01:00
acpi_processor.c ACPI: processor: Replace deprecated CPU-hotplug functions 2021-08-04 20:25:54 +02:00
acpi_tad.c ACPI: Use DEVICE_ATTR_<RW|RO|WO> macros 2021-01-22 16:17:19 +01:00
acpi_video.c ACPI: video: Add Toshiba Satellite/Portege Z830 quirk 2022-10-26 12:35:30 +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: Fix missing NUL-termination with large strings 2023-03-10 09:39:11 +01:00
bgrt.c ACPI: bgrt: Use sysfs_emit 2021-06-23 19:27:50 +02:00
blacklist.c ACPI: blacklist: Unify the message printing 2021-06-07 15:36:45 +02:00
bus.c ACPI: VIOT: Fix ACS setup 2022-08-17 14:23:11 +02:00
button.c ACPI: button: Add DMI quirk for Lenovo Yoga 9 (14INTL5) 2021-08-25 19:57:01 +02:00
container.c ACPI: container: Remove leftover ACPICA debug functionality 2020-09-25 18:25:51 +02:00
cppc_acpi.c ACPI: CPPC: Do not prevent CPPC from working in the future 2022-08-17 14:24:25 +02:00
custom_method.c ACPI: custom_method: fix a possible memory leak 2021-04-28 19:17:54 +02:00
debugfs.c ACPI: debugfs: Remove dead ACPICA debug code 2020-09-25 18:25:51 +02:00
device_pm.c for-5.14/drivers-2021-06-29 2021-06-30 12:21:16 -07:00
device_sysfs.c ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias() 2023-11-20 11:08:16 +01:00
dock.c ACPI: dock: fix some coding style issues 2021-04-08 16:27:03 +02:00
ec.c ACPI: EC: Fix oops when removing custom query handlers 2023-05-24 17:36:44 +01:00
ec_sys.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482 2019-06-19 17:09:52 +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.c ACPI: PM / fan: Put fan device IDs into separate header file 2021-05-21 19:02:35 +02:00
fan.h ACPI: PM / fan: Put fan device IDs into separate header file 2021-05-21 19:02:35 +02:00
glue.c Revert "ACPI: scan: Release PM resources blocked by unused objects" 2021-11-21 13:44:14 +01:00
hed.c ACPI: HED: Drop unused ACPI_MODULE_NAME() definition 2021-03-08 16:51:48 +01:00
internal.h ACPI: EC: Rework flushing of EC work while suspended to idle 2022-01-27 11:03:23 +01:00
ioapic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq.c ACPI: irq: Fix incorrect return value in acpi_register_gsi() 2023-10-25 11:59:02 +02:00
Kconfig Merge branches 'acpi-numa', 'acpi-glue', 'acpi-config' and 'acpi-pmic' 2021-08-30 19:30:37 +02:00
Makefile IOMMU Updates for Linux v5.14 2021-07-02 13:22:47 -07:00
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: Shoot duplicate word 2019-11-13 11:12:08 +01:00
osl.c Revert "ACPI: Add memory semantics to acpi_os_map_memory()" 2021-09-23 20:39:36 +02:00
pci_irq.c ACPI: PCI: IRQ: Consolidate printing diagnostic messages 2021-03-08 16:51:08 +01:00
pci_link.c ACPI: utils: Introduce acpi_evaluation_failure_warn() 2021-03-08 19:10:30 +01:00
pci_mcfg.c PCI/ACPI: Guard ARM64-specific mcfg_quirks 2022-08-25 11:40:36 +02:00
pci_root.c ACPI: APEI: explicit init of HEST and GHES in apci_init() 2022-08-17 14:23:11 +02:00
pci_slot.c ACPI: PCI: Remove unused ACPICA debug code 2020-09-25 18:25:51 +02:00
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: Fix device wakeup power reference counting error 2021-11-18 19:17:09 +01:00
pptt.c ACPI: tables: PPTT: Populate cache-id if provided by firmware 2021-06-07 15:55:02 +02:00
prmt.c ACPI: PRM: Check whether EFI runtime is available 2023-01-24 07:22:45 +01:00
proc.c ACPI: proc: Remove dead ACPICA debug code 2020-09-25 18:25:51 +02:00
processor_core.c ACPI: processor: Remove dead ACPICA debug code 2020-09-25 18:25:51 +02:00
processor_driver.c ACPI: processor: Get rid of ACPICA message printing 2021-03-08 16:51:19 +01:00
processor_idle.c ACPI: processor idle: Practically limit "Dummy wait" workaround to old Intel systems 2023-02-06 07:59:01 +01:00
processor_pdc.c ACPI: processor: Fix evaluating _PDC method when running as Xen dom0 2023-05-11 23:00:22 +09:00
processor_perflib.c ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily 2023-08-03 10:22:46 +02:00
processor_thermal.c ACPI: processor: Remove freq Qos request for all CPUs 2022-08-31 17:16:48 +02:00
processor_throttling.c Merge branches 'acpi-dptf' and 'acpi-messages' 2021-06-29 15:50:37 +02:00
property.c ACPI: property: Return type of acpi_add_nondev_subnodes() should be bool 2022-08-25 11:40:10 +02:00
reboot.c ACPI: reboot: Unify the message printing 2021-06-07 15:36:46 +02:00
resource.c ACPI: resource: Skip IRQ override on ASUS ExpertBook B1402CBA 2023-10-19 23:05:36 +02:00
sbs.c ACPI: sbs: Unify the message printing 2021-06-07 15:36:46 +02:00
sbshc.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
sbshc.h ACPI: Fix whitespace inconsistencies 2020-11-09 19:08:06 +01:00
scan.c ACPI: scan: Add LATT2021 to acpi_ignore_dep_ids[] 2022-11-26 09:24:31 +01:00
sleep.c ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep() 2023-06-28 10:29:42 +02:00
sleep.h Revert "Revert "ACPI: scan: Turn off unused power resources during initialization"" 2021-05-10 14:02:17 +02:00
spcr.c ACPI: SPCR: Add support for the new 16550-compatible Serial Port Subtype 2021-08-16 18:38:08 +02:00
sysfs.c ACPI: sysfs: Fix BERT error region memory mapping 2022-05-30 09:28:58 +02:00
tables.c memblock: exclude MEMBLOCK_NOMAP regions from kmemleak 2021-10-21 18:30:49 -10:00
thermal.c ACPI: thermal: Drop nocrt parameter 2023-09-02 09:17:07 +02:00
tiny-power-button.c ACPI: tiny-power-button: Simplify the code using module_acpi_driver() 2020-11-17 18:12:34 +01:00
utils.c ACPI: utils: Fix reference counting in for_each_acpi_dev_match() 2021-07-19 16:22:01 +02:00
video_detect.c ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 2023-09-23 11:09:55 +02:00
viot.c ACPI: VIOT: Initialize the correct IOMMU fwspec 2023-05-11 23:00:23 +09:00
wakeup.c ACPI: Fix whitespace inconsistencies 2020-11-09 19:08:06 +01:00