[  101.858268][  T117] su (117) used greatest stack depth: 24072 bytes left
[  101.858285][  T117] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  101.858287][  T117] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 117, name: su
[  101.858288][  T117] preempt_count: 2, expected: 0
[  101.858289][  T117] RCU nest depth: 0, expected: 0
[  101.858290][  T117] locks held by su/117: 5, last CPU#3:
[  101.858292][  T117]  #0: ffffffffb34167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[  101.858307][  T117]  #1: ffffffffb357ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[  101.858312][  T117]  #2: ffffffffb357de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[  101.858316][  T117]  #3: ffffffffb349d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[  101.858320][  T117]  #4: ffffffffb349d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[  101.858324][  T117] irq event stamp: 161280
[  101.858325][  T117] hardirqs last  enabled at (161279): [<ffffffffaf986626>] __down_trylock_console_sem+0x86/0xa0
[  101.858328][  T117] hardirqs last disabled at (161280): [<ffffffffaf98c6c4>] console_emit_next_record+0x3d4/0x4c0
[  101.858330][  T117] softirqs last  enabled at (159408): [<ffffffffaf7e0d0c>] handle_softirqs+0x67c/0x900
[  101.858332][  T117] softirqs last disabled at (159403): [<ffffffffaf7e1145>] __irq_exit_rcu+0x145/0x1c0
[  101.858334][  T117] Preemption disabled at:
[  101.858335][  T117] [<0000000000000000>] 0x0
[  101.858342][  T117] CPU: 3 UID: 0 PID: 117 Comm: su Tainted: G        W           7.2.0-virtme #1 PREEMPT(full) 
[  101.858345][  T117] Tainted: [W]=WARN
[  101.858346][  T117] Hardware name: Bochs Bochs, BIOS Bochs 01