[   53.240853][  T117] su (117) used greatest stack depth: 23744 bytes left
[   53.240871][  T117] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   53.240873][  T117] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 117, name: su
[   53.240874][  T117] preempt_count: 2, expected: 0
[   53.240875][  T117] RCU nest depth: 0, expected: 0
[   53.240876][  T117] locks held by su/117: 5, last CPU#2:
[   53.240878][  T117]  #0: ffffffffb76167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   53.240889][  T117]  #1: ffffffffb777ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   53.240894][  T117]  #2: ffffffffb777de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   53.240898][  T117]  #3: ffffffffb769d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60