[   11.697610][  T110] su (110) used greatest stack depth: 24104 bytes left
[   11.697626][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   11.697628][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   11.697629][  T110] preempt_count: 2, expected: 0
[   11.697630][  T110] RCU nest depth: 0, expected: 0
[   11.697631][  T110] locks held by su/110: 5, last CPU#2:
[   11.697634][  T110]  #0: ffffffffb74027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   11.697646][  T110]  #1: ffffffffb7569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   11.697651][  T110]  #2: ffffffffb7569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   11.697654][  T110]  #3: ffffffffb7489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   11.697657][  T110]  #4: ffffffffb7489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   11.697661][  T110] irq event stamp: 162302
[   11.697662][  T110] hardirqs last  enabled at (162301): [<fff