[   58.994805][  T117] su (117) used greatest stack depth: 24072 bytes left
[   58.994825][  T117] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   58.994827][  T117] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 117, name: su
[   58.994828][  T117] preempt_count: 2, expected: 0
[   58.994829][  T117] RCU nest depth: 0, expected: 0
[   58.994830][  T117] locks held by su/117: 5, last CPU#0:
[   58.994832][  T117]  #0: ffffffffa1e167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   58.994843][  T117]  #1: ffffffffa1f7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   58.994848][  T117]  #2: ffffffffa1f7de38 (console_srcu){....}-{0:0}, at: console_flush_one_r