[   12.429017][  T109] su (109) used greatest stack depth: 24104 bytes left
[   12.429037][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   12.429040][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   12.429041][  T109] preempt_count: 2, expected: 0
[   12.429042][  T109] RCU nest depth: 0, expected: 0
[   12.429043][  T109] locks held by su/109: 5, last CPU#1:
[   12.429045][  T109]  #0: ffffffffb80027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   12.429057][  T109]  #1: ffffffffb8169cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   12.429062][  T109]  #2: ffffffffb8169d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   12.429066][  T109]  #3: ffffffffb8089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   12.429068][  T109]  #4: ffffffffb8089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   12.429072][  T109] irq event stamp: 165906
[   12.429073][  T109] hardirqs last  enabled at (165905): [<ffffffffb4f6d546>] __down_trylock_console_sem+0x86/0xa0
[   12.429076][  T109] hardirqs last disabled at (165906): [<ffffffffb4f735f4>] console_emit_next_record+0x3d4/0x4c0
[   12.429078][  T109] softirqs last  enabled at (164474): [<ffffffffb4dcaa2c>] handle_softirqs+