BUG: sleeping function called from invalid context at net/core/sock.c:2935
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3213, name: kworker/1:95
3 locks held by kworker/1:95/3213:
 #0: ffff8880aa426d28 ((wq_completion)events){+.+.}, at: spin_unlock_irq include/linux/spinlock.h:388 [inline]
 #0: ffff8880aa426d28 ((wq_completion)events){+.+.}, at: process_one_work+0x763/0x10f0 kernel/workqueue.c:2237
 #1: ffffc900017a7d78 ((work_completion)(&map->work)){+.+.}, at: process_one_work+0x7a5/0x10f0 kernel/workqueue.c:2239
 #2: ffffc90001a5e2e0 (&htab->buckets[i].lock#2){+...}, at: sock_hash_free+0xd7/0x460 net/core/sock_map.c:869
Preemption disabled at:
[<ffffffff867b6967>] sock_hash_free+0xd7/0x460 net/core/sock_map.c:869
CPU: 1 PID: 3213 Comm: kworker/1:95 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events bpf_map_free_deferred
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fb/0x318 lib/dump_stack.c:118
 ___might_sleep+0x449/0x5e0 kernel/sched/core.c:6800
 __might_sleep+0x8f/0x100 kernel/sched/core.c:6753
 lock_sock_nested+0x36/0x120 net/core/sock.c:2935
 lock_sock include/net/sock.h:1516 [inline]
 sock_hash_free+0x200/0x460 net/core/sock_map.c:872
 bpf_map_free_deferred+0xb2/0x110 kernel/bpf/syscall.c:474
 process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264
 worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

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