[   25.751375][  T110] su (110) used greatest stack depth: 23424 bytes left
[   25.751393][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   25.751395][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   25.751397][  T110] preempt_count: 2, expected: 0
[   25.751397][  T110] RCU nest depth: 0, expected: 0
[   25.751398][  T110] locks held by su/110: 5, last CPU#0:
[   25.751400][  T110]  #0: ffffffffb5e267b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   25.751412][  T110]  #1: ffffffffb5f8dcc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   25.751418][  T110]  #2: ffffffffb5f8dd38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   25.751421][  T110]  #3: ffffffffb5ead660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   25.751424][  T110]  #4: ffffffffb5ead560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   25.751428][  T110] irq event stamp: 163052
[   25.751429][  T110] hardirqs last  enabled at (163051): [<ffffffffb2b73546>] __down_trylock_console_sem+0x86/0xa0
[   25.751431][  T110] hardirqs last disabled at (163052): [<ffffffffb2b795f4>] console_emit_next_record+0x3d4/0x4c0
[   25.751433][  T110] softirqs last  enabled at