]> git.baikalelectronics.ru Git - kernel.git/commit
ACPI: ioapic: Clear on-stack resource before using it
authorJoerg Roedel <jroedel@suse.de>
Wed, 22 Mar 2017 17:33:23 +0000 (18:33 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 28 Mar 2017 21:31:45 +0000 (23:31 +0200)
commit899add3c14116a9f5ef719e3bdd784ab9c40f5e5
tree27cbd2cc11667d378d267f5dbe525d5ec60890b0
parent04db378bc38419431c40af65242beb366dba35ea
ACPI: ioapic: Clear on-stack resource before using it

The on-stack resource-window 'win' in setup_res() is not
properly initialized. This causes the pointers in the
embedded 'struct resource' to contain stale addresses.

These pointers (in my case the ->child pointer) later get
propagated to the global iomem_resources list, causing a #GP
exception when the list is traversed in
iomem_map_sanity_check().

Fixes: 947c6a401591 (x86/irq, ACPI: Implement ACPI driver to support IOAPIC hotplug)
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/acpi/ioapic.c