[   14.275303][  T109] su (109) used greatest stack depth: 24104 bytes left
[   14.275322][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   14.275324][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   14.275326][  T109] preempt_count: 2, expected: 0
[   14.275327][  T109] RCU nest depth: 0, expected: 0
[   14.275328][  T109] locks held by su/109: 5, last CPU#3:
[   14.275330][  T109]  #0: ffffffffbba027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   14.275342][  T109]  #1: ffffffffbbb69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   14.275347][  T109]  #2: ffffffffbbb69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   14.275351][  T109]  #3: ffffffffbba89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   14.275354][  T109]  #4: ffffffffbba89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   14.275357][  T109] irq event stamp: 151430
[   14.275358][  T109] hardirqs last  enabled at (151429): [<ffffffffb896d546>] __down_trylock_console_sem+0x86/0xa0
[   14.275362][  T109] hardirqs last disabled at (151430): [<ffffffffb89735f4>] console_emit_next_record+0x3d4/0x4c0
[   14.275363][  T109] softirqs last  enabled at (151048): [<ffffffffb87caa2c>] handle_softirqs+0x67c/0x900
[   14.275365][  T109] softirqs