syzbot

=============================
[ BUG: Invalid wait context ]
6.12.0-rc5-next-20241031-syzkaller #0 Not tainted
-----------------------------
swapper/0/0 is trying to lock:
ffff8880261e7a00 (&trie->lock){....}-{3:3}, at: trie_delete_elem+0x96/0x6a0 kernel/bpf/lpm_trie.c:462
other info that might help us debug this:
context-{3:3}
5 locks held by swapper/0/0:
 #0: ffff888020bb75c8 (&vp_dev->lock){-...}-{3:3}, at: vp_vring_interrupt drivers/virtio/virtio_pci_common.c:80 [inline]
 #0: ffff888020bb75c8 (&vp_dev->lock){-...}-{3:3}, at: vp_interrupt+0x142/0x200 drivers/virtio/virtio_pci_common.c:113
 #1: ffff88814174a120 (&vb->stop_update_lock){-...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #1: ffff88814174a120 (&vb->stop_update_lock){-...}-{3:3}, at: stats_request+0x6f/0x230 drivers/virtio/virtio_balloon.c:438
 #2: ffffffff8e939f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e939f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e939f20 (rcu_read_lock){....}-{1:3}, at: __queue_work+0x199/0xf50 kernel/workqueue.c:2259
 #3: ffff8880b863dd18 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x759/0xf50
 #4: ffffffff8e939f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #4: ffffffff8e939f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #4: ffffffff8e939f20 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2339 [inline]
 #4: ffffffff8e939f20 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run1+0x1d6/0x520 kernel/trace/bpf_trace.c:2380
stack backtrace:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc5-next-20241031-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 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+0x15a8/0x2100 kernel/locking/lockdep.c:5176
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 trie_delete_elem+0x96/0x6a0 kernel/bpf/lpm_trie.c:462
 bpf_prog_2c29ac5cdc6b1842+0x43/0x47
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2340 [inline]
 bpf_trace_run1+0x2ca/0x520 kernel/trace/bpf_trace.c:2380
 trace_workqueue_activate_work+0x186/0x1f0 include/trace/events/workqueue.h:59
 __queue_work+0xc7b/0xf50 kernel/workqueue.c:2338
 queue_work_on+0x1c2/0x380 kernel/workqueue.c:2390
 queue_work include/linux/workqueue.h:662 [inline]
 stats_request+0x1a3/0x230 drivers/virtio/virtio_balloon.c:441
 vring_interrupt+0x21d/0x380 drivers/virtio/virtio_ring.c:2595
 vp_vring_interrupt drivers/virtio/virtio_pci_common.c:82 [inline]
 vp_interrupt+0x192/0x200 drivers/virtio/virtio_pci_common.c:113
 __handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
 handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
 handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
 handle_fasteoi_irq+0x48a/0xae0 kernel/irq/chip.c:720
 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
 handle_irq arch/x86/kernel/irq.c:247 [inline]
 call_irq_handler arch/x86/kernel/irq.c:259 [inline]
 __common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285
 common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5201
Code: c9 50 e8 29 05 0c 00 48 83 c4 08 4c 89 f7 e8 4d 39 00 00 0f 1f 44 00 00 4c 89 f7 e8 a0 45 69 0a e8 4b 9e 38 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffffff8e607ae8 EFLAGS: 00000282
RAX: 467bb178e56b5700 RBX: ffffffff8e6945c0 RCX: ffffffff9a3d4903
RDX: dffffc0000000000 RSI: ffffffff8c0ad3a0 RDI: ffffffff8c604dc0
RBP: ffffffff8e607b30 R08: ffffffff901d03b7 R09: 1ffffffff203a076
R10: dffffc0000000000 R11: fffffbfff203a077 R12: 1ffff110170c7e74
R13: dffffc0000000000 R14: ffff8880b863e580 R15: ffff8880b863f3a0
 context_switch kernel/sched/core.c:5330 [inline]
 __schedule+0x1857/0x4c30 kernel/sched/core.c:6707
 schedule_idle+0x56/0x90 kernel/sched/core.c:6825
 do_idle+0x567/0x5c0 kernel/sched/idle.c:353
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
 rest_init+0x2dc/0x300 init/main.c:747
 start_kernel+0x47f/0x500 init/main.c:1102
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
 common_startup_64+0x13e/0x147
 </TASK>
----------------
Code disassembly (best guess):
   0:	c9                   	leave
   1:	50                   	push   %rax
   2:	e8 29 05 0c 00       	call   0xc0530
   7:	48 83 c4 08          	add    $0x8,%rsp
   b:	4c 89 f7             	mov    %r14,%rdi
   e:	e8 4d 39 00 00       	call   0x3960
  13:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  18:	4c 89 f7             	mov    %r14,%rdi
  1b:	e8 a0 45 69 0a       	call   0xa6945c0
  20:	e8 4b 9e 38 00       	call   0x389e70
  25:	fb                   	sti
  26:	48 8b 5d c0          	mov    -0x40(%rbp),%rbx
* 2a:	48 8d bb f8 15 00 00 	lea    0x15f8(%rbx),%rdi <-- trapping instruction
  31:	48 89 f8             	mov    %rdi,%rax
  34:	48 c1 e8 03          	shr    $0x3,%rax
  38:	49                   	rex.WB
  39:	be 00 00 00 00       	mov    $0x0,%esi
  3e:	00 fc                	add    %bh,%ah