[   11.819321][  T109] su (109) used greatest stack depth: 24104 bytes left
[   11.819336][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   11.819338][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   11.819339][  T109] preempt_count: 2, expected: 0
[   11.819340][  T109] RCU nest depth: 0, expected: 0
[   11.819341][  T109] locks held by su/109: 5, last CPU#2:
[   11.819343][  T109]  #0: ffffffffba4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   11.819355][  T109]  #1: ffffffffba569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   11.819360][  T109]  #2: ffffffffba569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   11.819363][  T109]  #3: ffffffffba489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   11.819366][  T109]  #4: ffffffffba489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   11.819370][  T109] irq event stamp: 156806
[   11.819375][  T109] hardirqs last  enabled at (156805): [<ffffffffb736d546>] __down_trylock_console_sem+0x86/0xa0
[   11.819378][  T109] hardirqs last disabled at (156806): [<ffffffffb73735f4>] console_emit_next_record+0x3d4/0x4c0
[   11.819380][  T109] softirqs last  enabled at (156304): [<ffffffffb71caa2c>] handle_softirqs+0x67c/0x900
[   11.819382][  T109] softirqs last disabled at (156297): [<ffffffffb71cae65>] __irq_exit_rcu+0x145/0x1c0
[   11.819385][  T109] Preemption disabled at:
[   11.819385][  T109] [<0000000000000000>] 0x0
[   11.819391][  T109] CPU: 2 UID: 0 PID: 109 Comm: su Tainted: G        W           7.2.0-virtme #1 PREEMPT(full) 
[   11.819395][  T109] Tainted: [W]=WARN
[   11.819395][  T109] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.819397][  T109] Call Trace:
[   11.819399][  T109]  <TASK>
[   11.819400][  T109]  dump_stack_lvl+0x6f/0xa0
[   11.819406][  T109]  __might_resched.cold+0x1fe/0x2c1
[   11.819410][  T109]  ? perf_trace_sched_switch+0x7c0/0x7c0
[   11.819414][  T109]  ? __kmalloc_noprof+0xdb/0x760