mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-29 23:53:32 +00:00
Code Issues Releases Wiki Activity

ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value

Browse source 
The return value of acpi_fetch_acpi_dev() could be NULL, which would
cause a NULL pointer dereference to occur in acpi_device_hid().

Signed-off-by: Li Zhong <floridsleeves@gmail.com>
[ rjw: Subject and changelog edits, added empty line after if () ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Li Zhong 2022-09-02 00:37:30 -07:00 committed by Rafael J. Wysocki
parent 247f34f7b8
commit 2437513a81
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/acpi/processor_idle.c
View file

@ -1134,6 +1134,9 @@ static int acpi_processor_get_lpi_info(struct acpi_processor *pr)
status = acpi_get_parent(handle, &pr_ahandle);
while (ACPI_SUCCESS(status)) {
d = acpi_fetch_acpi_dev(pr_ahandle);
if (!d)
break;
handle = pr_ahandle;
if (strcmp(acpi_device_hid(d), ACPI_PROCESSOR_CONTAINER_HID))