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Christophe JAILLET 2f11985aa2 ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias() 
[ Upstream commit 48cf49d31994ff97b33c4044e618560ec84d35fb ]

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: 8765c5ba1949 ("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>
2024-11-18 11:42:50 +01:00
..
acpica Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
apei Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
arm64 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dptf Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfit Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
numa Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pmic Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
x86 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ac.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_adxl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_amba.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_apd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_cmos_rtc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_configfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_dbg.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_extlog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_ipmi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_lpat.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_lpit.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_lpss.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_memhotplug.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_pad.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_platform.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_pnp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_processor.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_tad.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_video.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_watchdog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
battery.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bgrt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blacklist.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bus.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
button.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
container.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cppc_acpi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
custom_method.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
debugfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
device_pm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
device_sysfs.c ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias() 2024-11-18 11:42:50 +01:00
dock.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ec.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ec_sys.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
event.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
evged.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fan.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fan.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
glue.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hed.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ioapic.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
irq.c ACPI: irq: Fix incorrect return value in acpi_register_gsi() 2024-11-08 11:26:19 +01:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nvs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
osi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
osl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_irq.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_link.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_mcfg.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_root.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_slot.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
power.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pptt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_core.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_driver.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_idle.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_pdc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_perflib.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_thermal.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_throttling.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
property.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
reboot.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
resource.c ACPI: resource: Skip IRQ override on ASUS ExpertBook B1402CBA 2024-11-08 11:26:12 +01:00
sbs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sbshc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sbshc.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
scan.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sleep.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sleep.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
spcr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sysfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tables.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
thermal.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tiny-power-button.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
utils.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
video_detect.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
wakeup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00