HID: protect hid_debug_list

Browse source

Accesses to hid_device->hid_debug_list are not serialized properly, which
could result in SMP concurrency issues when HID debugfs events are accessesed
by multiple userspace processess.

Serialize all the list operations by a mutex.

Spotted by Al Viro.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

...

This commit is contained in:

Jiri Kosina 2013-04-16 15:40:09 -07:00

parent a5f04b9df1

commit 2353f2bea3

3 changed files with 8 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

drivers/hid/hid-core.c

View file

6

drivers/hid/hid-debug.c

View file

1

include/linux/hid.h

View file