[   15.317603][  T110] su (110) used greatest stack depth: 24104 bytes left
[   15.317621][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   15.317623][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   15.317625][  T110] preempt_count: 2, expected: 0
[   15.317626][  T110] RCU nest depth: 0, expected: 0
[   15.317627][  T110] locks held by su/110: 5, last CPU#0:
[   15.317629][  T110]  #0: ffffffffb88027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   15.317642][  T110]  #1: ffffffffb8969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   15.317647][  T110]  #2: ffffffffb8969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   15.317651][  T110]  #3: ffffffffb8889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   15.317654][  T110]  #4: ffffffffb8889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   15.317658][  T110] irq event stamp: 161368
[   15.317659][  T110] hardirqs last  enabled at (161367): [<ffffffffb576d546>] __down_trylock_console_sem+0x86/0xa0
[   15.317662][  T110] hardirqs last disabled at (161368): [<ffffffffb57735f4>] console_emit_next_record+0x3d4/0x4c0
[   15.317664][  T110] softirqs last  enabled at (160612): [<ffffffffb55caa2c>] handle_softirqs+0x67c/0x900
[   15.317666][  T110] softirqs last disabled at (160607): [<ffffffffb55cae65>] __irq_exit_rcu+0x145/0x1c0
[   15.317669][  T110] Preemption disabled at:
[   15.317669][  T110] [<0000000000000000>] 0x0