============================================
WARNING: possible recursive locking detected
6.0.0-rc6-syzkaller-00281-g1707c39ae309 #0 Not tainted
--------------------------------------------
kworker/u4:8/6647 is trying to acquire lock:
ffffffff8cd7d4f8 (trace_printk_lock){..-.}-{2:2}, at: ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
ffffffff8cd7d4f8 (trace_printk_lock){..-.}-{2:2}, at: bpf_trace_printk+0x151/0x200 kernel/trace/bpf_trace.c:374

but task is already holding lock:
ffffffff8cd7d4f8 (trace_printk_lock){..-.}-{2:2}, at: ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
ffffffff8cd7d4f8 (trace_printk_lock){..-.}-{2:2}, at: bpf_trace_printk+0x151/0x200 kernel/trace/bpf_trace.c:374

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(trace_printk_lock);
  lock(trace_printk_lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by kworker/u4:8/6647:
 #0: ffff8880b9b39c18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:544
 #1: ffffffff8cd208a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:279
 #2: ffffffff8cd7d4f8 (trace_printk_lock){..-.}-{2:2}, at: ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 #2: ffffffff8cd7d4f8 (trace_printk_lock){..-.}-{2:2}, at: bpf_trace_printk+0x151/0x200 kernel/trace/bpf_trace.c:374
 #3: ffffffff8cd208a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:279

stack backtrace:
CPU: 1 PID: 6647 Comm: kworker/u4:8 Not tainted 6.0.0-rc6-syzkaller-00281-g1707c39ae309 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Workqueue:  0x0 (gid-cache-wq)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2988 [inline]
 check_deadlock kernel/locking/lockdep.c:3031 [inline]
 validate_chain+0x4897/0x6600 kernel/locking/lockdep.c:3816
 __lock_acquire+0x1292/0x1f60 kernel/locking/lockdep.c:5053
 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5666
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0x151/0x200 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:903 [inline]
 __bpf_prog_run include/linux/filter.h:594 [inline]
 bpf_prog_run include/linux/filter.h:601 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run2+0x18a/0x320 kernel/trace/bpf_trace.c:2083
 trace_contention_end+0x168/0x190 include/trace/events/lock.h:122
 __pv_queued_spin_lock_slowpath+0x93f/0xc60 kernel/locking/qspinlock.c:560
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x264/0x360 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0xdd/0x120 kernel/locking/spinlock.c:162
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0x151/0x200 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:903 [inline]
 __bpf_prog_run include/linux/filter.h:594 [inline]
 bpf_prog_run include/linux/filter.h:601 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run4+0x1d6/0x370 kernel/trace/bpf_trace.c:2085
 __traceiter_sched_switch+0x93/0xc0 include/trace/events/sched.h:222
 trace_sched_switch+0x13c/0x160 include/trace/events/sched.h:222
 __schedule+0x65c/0xe20 kernel/sched/core.c:6491
 schedule+0xcb/0x190 kernel/sched/core.c:6570
 worker_thread+0xfbf/0x1330 kernel/workqueue.c:2457
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>