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(parent: 8906aa0) | patch
HID: protect hid_debug_list
authorJiri Kosina <jkosina@suse.cz>
Tue, 16 Apr 2013 22:40:09 +0000 (15:40 -0700)
committerJiri Kosina <jkosina@suse.cz>
Tue, 30 Apr 2013 08:09:31 +0000 (10:09 +0200)
commit8b3cf3c9eb0709f45b1e67dd6c5b5c67269d1cba
treebeb7fd2471690bbd8b0d0982c3b1f40f6784adbatree | snapshot
parent8906aa0b39ddfae5e522c6a73fa346b4aa8cf541commit | diff
HID: protect hid_debug_list

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>
drivers/hid/hid-core.c diff | blob | history
drivers/hid/hid-debug.c diff | blob | history
include/linux/hid.h diff | blob | history
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