[    2.490965] ip (218) used greatest stack depth: 12568 bytes left
[    2.500387] sysctl (220) used greatest stack depth: 12456 bytes left
[    4.856795] ip (868) used greatest stack depth: 12056 bytes left
[   52.148117] netem: version 1.3
[  554.789277] pm_nl_ctl (24672) used greatest stack depth: 11856 bytes left