=============================
[ BUG: Invalid wait context ]
6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0 Not tainted
-----------------------------
iou-wrk-6880/6881 is trying to lock:
ffff8880231d40d8 (&sighand->siglock){-.-.}-{3:3}, at: __lock_task_sighand+0xc2/0x340 kernel/signal.c:1379
other info that might help us debug this:
context-{5:5}
4 locks held by iou-wrk-6880/6881:
 #0: ffffffff8dc87840 (sched_map-wait-type-override){+.+.}-{3:3}, at: sched_submit_work kernel/sched/core.c:6789 [inline]
 #0: ffffffff8dc87840 (sched_map-wait-type-override){+.+.}-{3:3}, at: schedule+0x1fd/0x350 kernel/sched/core.c:6847
 #1: ffff888025af78c0 (&acct->lock){+.+.}-{2:2}, at: io_acct_run_queue io_uring/io-wq.c:260 [inline]
 #1: ffff888025af78c0 (&acct->lock){+.+.}-{2:2}, at: io_wq_dec_running+0x126/0x250 io_uring/io-wq.c:420
 #2: ffffffff8ddba940 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8ddba940 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8ddba940 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2361 [inline]
 #2: ffffffff8ddba940 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1c2/0x590 kernel/trace/bpf_trace.c:2403
 #3: ffffffff8ddba940 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #3: ffffffff8ddba940 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff8ddba940 (rcu_read_lock){....}-{1:3}, at: __lock_task_sighand+0x3f/0x340 kernel/signal.c:1362
stack backtrace:
CPU: 3 UID: 0 PID: 6881 Comm: iou-wrk-6880 Not tainted 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0
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+0x116/0x1f0 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
 check_wait_context kernel/locking/lockdep.c:4898 [inline]
 __lock_acquire+0x878/0x3c40 kernel/locking/lockdep.c:5176
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
 __lock_task_sighand+0xc2/0x340 kernel/signal.c:1379
 lock_task_sighand include/linux/sched/signal.h:743 [inline]
 do_send_sig_info kernel/signal.c:1267 [inline]
 group_send_sig_info+0x290/0x300 kernel/signal.c:1418
 bpf_send_signal_common+0x415/0x520 kernel/trace/bpf_trace.c:881
 ____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
 bpf_send_signal+0x1d/0x30 kernel/trace/bpf_trace.c:884
 bpf_prog_631417f49dd64198+0x25/0x48
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:692 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2362 [inline]
 bpf_trace_run2+0x34c/0x590 kernel/trace/bpf_trace.c:2403
 trace_contention_end.constprop.0+0xf0/0x170 include/trace/events/lock.h:122
 __pv_queued_spin_lock_slowpath+0x27e/0xc90 kernel/locking/qspinlock.c:557
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x210/0x2c0 kernel/locking/spinlock_debug.c:116
 io_acct_run_queue io_uring/io-wq.c:260 [inline]
 io_wq_dec_running+0x126/0x250 io_uring/io-wq.c:420
 io_wq_worker_sleeping+0xf1/0x120 io_uring/io-wq.c:728
 sched_submit_work kernel/sched/core.c:6799 [inline]
 schedule+0x2c6/0x350 kernel/sched/core.c:6847
 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
 io_wq_worker+0x4ba/0xdf0 io_uring/io-wq.c:673
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>