[    1.465930] readlink (191) used greatest stack depth: 12600 bytes left
[    1.744955] ip (255) used greatest stack depth: 12296 bytes left
[    2.049934] ip (286) used greatest stack depth: 12264 bytes left
[   52.828450] netem: version 1.3
[  592.728475] tc (15679) used greatest stack depth: 11912 bytes left
[  649.696664] pm_nl_ctl (18823) used greatest stack depth: 11752 bytes left