[   15.953442][  T111] su (111) used greatest stack depth: 24104 bytes left
[   15.953460][  T111] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   15.953462][  T111] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 111, name: su
[   15.953464][  T111] preempt_count: 2, expected: 0
[   15.953465][  T111] RCU nest depth: 0, expected: 0
[   15.953466][  T111] locks held by su/111: 5, last CPU#0:
[   15.953468][  T111]  #0: ffffffffa18127b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   15.953480][  T111]  #1: ffffffffa1979cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   15.953486][  T111]  #2: ffffffffa1979d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   15.953490][  T111]  #3: ffffffffa1899660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   15.953494][  T111]  #4: ffffffffa1899560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   15.953498][  T111] irq event stamp: 173062
[   15.953499][  T111] hardirqs last  enabled at (173061): [<fff