BUG: sleeping function called from invalid context at mm/vmalloc.c:3409
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 23636, name: syz.2.12822
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffffffff8229256c>] refill_obj_stock+0x2c/0x6d0 mm/memcontrol.c:3030
CPU: 1 UID: 0 PID: 23636 Comm: syz.2.12822 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120
 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:8957
 vfree+0x75/0xb50 mm/vmalloc.c:3409
 futex_hash_free+0x98/0xc0 kernel/futex/core.c:1742
 __mmdrop+0x33f/0x580 kernel/fork.c:692
 mmdrop include/linux/sched/mm.h:55 [inline]
 mmdrop_sched include/linux/sched/mm.h:83 [inline]
 mmdrop_lazy_tlb_sched include/linux/sched/mm.h:110 [inline]
 finish_task_switch.isra.0+0x7a4/0xc10 kernel/sched/core.c:5250
 schedule_tail+0xe/0xe0 kernel/sched/core.c:5282
 ret_from_fork+0x25/0x6f0 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
binder: 23635:23636 unknown command 0
binder: 23635:23636 ioctl c0306201 80000080 returned -22
netlink: 8 bytes leftover after parsing attributes in process `syz.2.12822'.