[   90.072591][  T112] su (112) used greatest stack depth: 23776 bytes left
[   90.072612][  T112] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   90.072614][  T112] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 112, name: su
[   90.072616][  T112] preempt_count: 2, expected: 0
[   90.072617][  T112] RCU nest depth: 0, expected: 0
[   90.072618][  T112] locks held by su/112: 5, last CPU#3:
[   90.072620][  T112]  #0: ffffffff8e8127b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   90.072631][  T112]  #1: ffffffff8e979cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   90.072637][  T112]  #2: ffffffff8e979d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   90.072640][  T112]  #3: ffffffff8e899660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   90.072644][  T112]  #4: ffffffff8e899560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   90.072648][  T112] irq event stamp: 143732
[   90.072649][  T112] hardirqs last  enabled at (143731): [<ffffffff8b57a546>] __down_trylock_console_sem+0x86/0xa0
[   90.072651][  T112] hardirqs last disabled at (143732): [<ffffffff8b5805f4>] console_emit_next_record+0x3d4/0x4c0
[   90.072653][  T112] softirqs last  enabled at (142288): [<ffffffff8b3d7a2c>] handle_softirqs+0x67c/0x900
[   90.072655][  T112] softirqs last disabled at (142281): [<ffffffff8b3d7e65>] __irq_exit_rcu+0x145/0x1c0
[   90.072657][  T112] Preemption disabled at:
[   90.072658][  T112] [<0000000000000000>] 0x0
[   90.072665][  T112] CPU: 3 UID: 0 PID: 112 Comm: su Tainted: G        W           7.2.0-virtme #1 PREEMPT(full) 
[   90.072668][  T112] Tainted: [W]=WARN
[   90.072669][  T112] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   90.072671][  T112] Call Trace:
[   90.072673][  T112]  <TASK>
[   90.072674][  T112]  dump_stack_lvl+0x6f/0xa0
[   90.072680][  T112]  __might_resched.cold+0x1fe/0x2c1
[   90.072684][  T112]  ? perf_trace_sched_switch+0x7c0/0x7c0
[   90.072688][  T112]  ? __kmalloc_noprof+0xdb/0x760
[   90.072693][  T112]  __kmalloc_noprof+0x443/0x760
[   90.072695][  T112]  ? alloc_buf.isra.0+0x4b/0x260
[   90.072702][