[   14.654312][  T119] su (119) used greatest stack depth: 24104 bytes left
[   14.654332][  T119] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   14.654334][  T119] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 119, name: su
[   14.654336][  T119] preempt_count: 2, expected: 0
[   14.654337][  T119] RCU nest depth: 0, expected: 0
[   14.654337][  T119] locks held by su/119: 5, last CPU#0:
[   14.654339][  T119]  #0: ffffffffb78027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   14.654351][  T119]  #1: ffffffffb7999dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   14.654356][  T119]  #2: ffffffffb7999e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   14.654360][  T119]  #3: ffffffffb7889760 (console_owner){...