[   11.224207][  T109] su (109) used greatest stack depth: 24296 bytes left
[   11.224223][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   11.224225][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   11.224227][  T109] preempt_count: 2, expected: 0
[   11.224227][  T109] RCU nest depth: 0, expected: 0
[   11.224228][  T109] INFO: lockdep is turned off.
[   11.224230][  T109] irq event stamp: 0
[   11.224230][  T109] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
[   11.224236][  T109] hardirqs last disabled at (0): [<ffffffff839a848d>] copy_process+0x1ccd/0x6240
[   11.224242][  T109] softirqs last  enabled at (0): [<ffffffff839a84e1>] copy_process+0x1d21/0x6240
[   11.224244][  T109] softirqs last disabled at (0): [<0000000000000000>] 0x0
[   11.224245][  T109] Preemption disabled at:
[   11.224246][  T109] [<0000000000000000>] 0x0
[   11.224251][  T109] CPU: 0 UID: 0 PID: 109 Comm: su Tainted: G        W           7.2.0-virtme #1 PREEMPT(full) 
[   11.224254][  T109] Tainted: [W]=WARN
[   11.224255][  T109] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.224257][  T109] Call Trace:
[   11.224258][  T109]  <TASK>
[   11.224260][  T109]  dump_stack_lvl+0x6f/0xa0
[   11.224264][  T109]  __might_resched.cold+0x1fe/0x2c1