------------[ cut here ]------------
WARNING: CPU: 0 PID: 5961 at net/sched/sch_cake.c:2094 cake_dequeue+0x2af1/0x4690 net/sched/sch_cake.c:2094
Modules linked in:
CPU: 0 PID: 5961 Comm: syz.0.205 Not tainted 6.10.0-syzkaller-11323-g7846b618e0a4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:cake_dequeue+0x2af1/0x4690 net/sched/sch_cake.c:2094
Code: 74 08 4c 89 f7 e8 af d7 6b f8 4d 89 26 eb 05 e8 75 e1 08 f8 45 31 f6 4c 8b a4 24 08 01 00 00 e9 d4 de ff ff e8 60 e1 08 f8 90 <0f> 0b 90 48 8b 94 24 f0 00 00 00 48 89 d0 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc900000079c0 EFLAGS: 00010246
RAX: ffffffff898a6160 RBX: 000000000000ffff RCX: ffff888020bb1e00
RDX: 0000000080000101 RSI: 000000000000ffff RDI: 0000000000000400
RBP: ffffc90000007c28 R08: ffffffff898a5f7c R09: ffffffff898a69e5
R10: 0000000000000003 R11: ffff888020bb1e00 R12: ffff888062900010
R13: dffffc0000000000 R14: 000000000000ffff R15: ffff888062900000
FS:  00007f04d09016c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020043000 CR3: 0000000021f4c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dequeue_skb net/sched/sch_generic.c:293 [inline]
 qdisc_restart net/sched/sch_generic.c:398 [inline]
 __qdisc_run+0x272/0x2170 net/sched/sch_generic.c:416
 qdisc_run+0xda/0x270 include/net/pkt_sched.h:127
 net_tx_action+0x89c/0xa50 net/core/dev.c:5322
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__outw arch/x86/include/asm/shared/io.h:23 [inline]
RIP: 0010:iowrite16+0x37/0x90 lib/iomap.c:213
Code: 9c e5 fc 48 81 fb 00 00 04 00 72 0a e8 52 9c e5 fc 66 89 2b eb 59 48 81 fb 01 00 01 00 72 0d e8 3f 9c e5 fc 89 e8 89 da 66 ef <eb> 43 8b 2d 11 1a f6 09 31 ff 89 ee e8 68 a0 e5 fc 85 ed 74 2b e8
RSP: 0018:ffffc90013caf928 EFLAGS: 00000287
RAX: 0000000000000000 RBX: 000000000001c0b0 RCX: 0000000000040000
RDX: 000000000001c0b0 RSI: 00000000000110dd RDI: 00000000000110de
RBP: 0000000000000000 R08: ffffffff851d9580 R09: ffff88801f848998
R10: dffffc0000000000 R11: ffffffff851eec90 R12: dffffc0000000000
R13: 0000000000009dad R14: dffffc0000000000 R15: ffff88801fa35000
 vp_notify+0x57/0x80 drivers/virtio/virtio_pci_common.c:45
 virtqueue_notify drivers/virtio/virtio_ring.c:2370 [inline]
 virtqueue_kick+0x39b/0x5c0 drivers/virtio/virtio_ring.c:2393
 request_entropy drivers/char/hw_random/virtio-rng.c:63 [inline]
 copy_data+0x237/0x370 drivers/char/hw_random/virtio-rng.c:74
 virtio_read+0xcb/0x200 drivers/char/hw_random/virtio-rng.c:92
 rng_get_data drivers/char/hw_random/core.c:185 [inline]
 rng_dev_read+0x248/0x6d0 drivers/char/hw_random/core.c:223
 do_loop_readv_writev fs/read_write.c:761 [inline]
 vfs_readv+0x6c2/0xa90 fs/read_write.c:934
 do_preadv fs/read_write.c:1049 [inline]
 __do_sys_preadv fs/read_write.c:1099 [inline]
 __se_sys_preadv fs/read_write.c:1094 [inline]
 __x64_sys_preadv+0x1c7/0x2d0 fs/read_write.c:1094
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f04cfb75b59
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f04d0901048 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007f04cfd05f60 RCX: 00007f04cfb75b59
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007f04cfbe4e5d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f04cfd05f60 R15: 00007ffc46bc8a98
 </TASK>
----------------
Code disassembly (best guess):
   0:	9c                   	pushf
   1:	e5 fc                	in     $0xfc,%eax
   3:	48 81 fb 00 00 04 00 	cmp    $0x40000,%rbx
   a:	72 0a                	jb     0x16
   c:	e8 52 9c e5 fc       	call   0xfce59c63
  11:	66 89 2b             	mov    %bp,(%rbx)
  14:	eb 59                	jmp    0x6f
  16:	48 81 fb 01 00 01 00 	cmp    $0x10001,%rbx
  1d:	72 0d                	jb     0x2c
  1f:	e8 3f 9c e5 fc       	call   0xfce59c63
  24:	89 e8                	mov    %ebp,%eax
  26:	89 da                	mov    %ebx,%edx
  28:	66 ef                	out    %ax,(%dx)
* 2a:	eb 43                	jmp    0x6f <-- trapping instruction
  2c:	8b 2d 11 1a f6 09    	mov    0x9f61a11(%rip),%ebp        # 0x9f61a43
  32:	31 ff                	xor    %edi,%edi
  34:	89 ee                	mov    %ebp,%esi
  36:	e8 68 a0 e5 fc       	call   0xfce5a0a3
  3b:	85 ed                	test   %ebp,%ebp
  3d:	74 2b                	je     0x6a
  3f:	e8                   	.byte 0xe8