[   15.159977][  T110] su (110) used greatest stack depth: 24104 bytes left
[   15.159996][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   15.159998][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   15.159999][  T110] preempt_count: 2, expected: 0
[   15.160000][  T110] RCU nest depth: 0, expected: 0
[   15.160001][  T110] locks held by su/110: 5, last CPU#1:
[   15.160003][  T110]  #0: ffffffffb4a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   15.160016][  T110]  #1: ffffffffb4b69cc0 (console_lock){+.+.