[   16.352282][  T110] su (110) used greatest stack depth: 24104 bytes left
[   16.352304][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   16.352306][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   16.352308][  T110] preempt_count: 2, expected: 0
[   16.352309][  T110] RCU nest depth: 0, expected: 0
[   16.352310][  T110] locks held by su/110: 5, last CPU#3:
[   16.352313][  T110]  #0: ffffffffbb8027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   16.352325][  T110]  #1: ffffffffbb969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   16.352330][  T110]  #2: ffffffffbb969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   16.352334][  T110]  #3: ffffffffbb889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   16.352337][  T110]  #4: ffffffffbb889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   16.352340][  T110] irq event stamp: 145304
[   16.352341][  T110] hardirqs last  enabled at (145303): [<ffffffffb876d546>] __down_trylock_console_sem+0x86/0xa0
[   16.352345][  T110] hardirqs last disabled at (145304): [<ffffffffb87735f4>] console_emit_next_record+0x3d4/0x4c0
[   16.352347][  T110] softirqs last  enabled at (145166): [<ffffffffb85caa2c>] handle_softirqs+0x67c/0x900
[   16.352349][  T110] softirqs last disabled at (145161): [<ffffffffb85cae65>] __irq_exit_rcu+0x145/0x1c0
[   16.352352][  T110] Preemption disabled at:
[   16.352352][  T110] [<0000000000000000>] 0x0
[   16.352360][  T110] CPU: 3 UID: 0 PID: 110 Comm: su Tainted: G        W           7.2.0-virtme #1 PREEMPT(full) 
[   16.352364][  T110] Tainted: [W]=WARN
[   16.352365][  T110] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.352367][  T110] Call Trace:
[   16.352369][  T110]  <TASK>
[   16.352370][  T110]  dump_stack_lvl+0x6f/0xa0
[   16.352376][  T110]  __might_resched.cold+0x1fe/0x2c1
[   16.352381][  T110]  ? perf_trace_sched_switch+0x7c0/0x7c0
[   16.352384][  T110]  ? __kmalloc_noprof+0xdb/0x760
[   16.352389][  T110]  __kmalloc_noprof+0x443/0x760
[   16.352392][  T110]  ? alloc_