[    2.174713] ip (206) used greatest stack depth: 12504 bytes left
[   16.982711] ip (1686) used greatest stack depth: 12320 bytes left
[   50.157881] netem: version 1.3
[   56.206888] ip (4435) used greatest stack depth: 12056 bytes left
[  523.311873] pm_nl_ctl (24835) used greatest stack depth: 11864 bytes left