[   56.884468][  T118] su (118) used greatest stack depth: 24072 bytes left
[   56.884488][  T118] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   56.884490][  T118] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 118, name: su
[   56.884491][  T118] preempt_count: 2, expected: 0
[   56.884492][  T118] RCU nest depth: 0, expected: 0
[   56.884493][  T118] locks held by su/118: 5, last CPU#3:
[   56.884495][  T118]  #0: ffffffffb2a167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   56.884507][  T118]  #1: ffffffffb2b7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   56.884512][  T118]  #2: ffffffffb2b7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   56.884517][  T118]  #3: ffffffffb2a9d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   56.884520][  T118]  #4: ffffffffb2a9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   56.884524][  T118] irq event stamp: 176754
[   56.884525][  T118] hardirqs last  enabled at (176753): [<ffffffffaef86626>] __down_trylock_console_sem+0x86/0xa0
[   56.884528][  T118] hardirqs last disabled at (176754): [<ffffffffaef8c6c4>] console_emit_next_record+0x3d4/0x4c0
[   56.884530][  T118] softirqs last  enabled at (175102): [<ffffffffaede0d0c>] handle_softirqs+0x67c/0x900
[   56.884533][  T118] softirqs last disabled at (175097): [<ffffffffaede1145>] __irq_exit_rcu+0x145/0x1c0
[   56.884535][  T118] Preemption disabled at:
[   56.884536][