[   15.240451][  T109] su (109) used greatest stack depth: 23504 bytes left
[   15.240472][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   15.240474][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   15.240476][  T109] preempt_count: 2, expected: 0
[   15.240477][  T109] RCU nest depth: 0, expected: 0
[   15.240478][  T109] locks held by su/109: 5, last CPU#0:
[   15.240480][  T109]  #0: ffffffffa04027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   15.240492][  T109]  #1: ffffffffa0569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   15.240498][  T109]  #2: ffffffffa0569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710