Chenyuchai, yes, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?h=7dec5603b6b8dc4c3e1c65d318bd2a5a8c62a424 is the fix. It was integrated in the Trusty kernel 3.13.0-87.133
Chenyuchai, yes, https:/ /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?h=7dec5603b6b8 dc4c3e1c65d318b d2a5a8c62a424 is the fix. It was integrated in the Trusty kernel 3.13.0-87.133