[   11.853382][  T109] su (109) used greatest stack depth: 24104 bytes left
[   11.853397][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   11.853399][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   11.853400][  T109] preempt_count: 2, expected: 0
[   11.853401][  T109] RCU nest depth: 0, expected: 0
[   11.853402][  T109] locks held by su/109: 5, last CPU#3:
[   11.853404][  T109]  #0: ffffffffa5c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   11.853416][  T109]  #1: ffffffffa5d69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   11.853421][  T109]  #2: ffffffffa5d69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   11.853424][  T109]  #3: ffffffffa5c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   11.853427][  T109]  #4: ffffffffa5c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   11.853430][  T109] irq event stamp: 154360
[   11.853431][  T109] hardirqs last  enabled at (154359): [<ffffffffa2b6d546>] __down_trylock_console_sem+0x86/0xa0
[   11.853435][  T109] hardirqs last disabled at (154360): [<ffffffffa2b735f4>] console_emit_next_record+0x3d4/0x4c0
[   11.853436][  T109] softirqs last  enabled at (153164): [<ffffffffa29caa2c>] handle_softirqs+0x67c/0x900
[   11.853438][  T109] softirqs last disabled at (153159): [<ffffffffa29cae65>] __irq_exit_rcu+0x145/0x1c0
[   11.853441][