Oops: general protection fault, probably for non-canonical address 0xdffffc0000000035: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000001a8-0x00000000000001af]
CPU: 1 UID: 0 PID: 21633 Comm: syz.1.14210 Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:htb_deactivate net/sched/sch_htb.c:613 [inline]
RIP: 0010:htb_qlen_notify+0x31/0xc0 net/sched/sch_htb.c:1489
Code: 41 56 41 55 41 54 53 49 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 4d 4b 3e f8 49 8d 9e a8 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 4d 8b 2b 31 ff 89 ee e8 6a 4f 3e f8 85
RSP: 0018:ffffc9000dc270b0 EFLAGS: 00010206
RAX: ffffffff8981dab3 RBX: 00000000000001a8 RCX: 0000000000080000
RDX: ffffc9000ea1c000 RSI: 000000000000032e RDI: 000000000000032f
RBP: dffffc0000000000 R08: ffff88801c799e00 R09: 0000000000000002
R10: 00000000ffffffff R11: ffffffff8981da90 R12: dffffc0000000000
R13: 0000000000000035 R14: 0000000000000000 R15: ffff88807c9f8000
FS:  0000000000000000(0000) GS:ffff888125d1d000(0063) knlGS:00000000f50f6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080000240 CR3: 000000007794c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 qdisc_tree_reduce_backlog+0x29c/0x480 net/sched/sch_api.c:811
 codel_change+0x859/0xae0 net/sched/sch_codel.c:153
 codel_init+0x1f7/0x3e0 net/sched/sch_codel.c:172
 qdisc_create+0x7ac/0xea0 net/sched/sch_api.c:1324
 __tc_modify_qdisc net/sched/sch_api.c:1749 [inline]
 tc_modify_qdisc+0x1426/0x2010 net/sched/sch_api.c:1813
 rtnetlink_rcv_msg+0x779/0xb70 net/core/rtnetlink.c:6953
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:727
 ____sys_sendmsg+0x505/0x830 net/socket.c:2566
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620
 __sys_sendmsg+0x164/0x220 net/socket.c:2652
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb6/0x2b0 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fd8539
Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f50f655c EFLAGS: 00000206 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000080000280
RDX: 0000000000004000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:htb_deactivate net/sched/sch_htb.c:613 [inline]
RIP: 0010:htb_qlen_notify+0x31/0xc0 net/sched/sch_htb.c:1489
Code: 41 56 41 55 41 54 53 49 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 4d 4b 3e f8 49 8d 9e a8 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 4d 8b 2b 31 ff 89 ee e8 6a 4f 3e f8 85
RSP: 0018:ffffc9000dc270b0 EFLAGS: 00010206
RAX: ffffffff8981dab3 RBX: 00000000000001a8 RCX: 0000000000080000
RDX: ffffc9000ea1c000 RSI: 000000000000032e RDI: 000000000000032f
RBP: dffffc0000000000 R08: ffff88801c799e00 R09: 0000000000000002
R10: 00000000ffffffff R11: ffffffff8981da90 R12: dffffc0000000000
R13: 0000000000000035 R14: 0000000000000000 R15: ffff88807c9f8000
FS:  0000000000000000(0000) GS:ffff888125d1d000(0063) knlGS:00000000f50f6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080000240 CR3: 000000007794c000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	41 56                	push   %r14
   2:	41 55                	push   %r13
   4:	41 54                	push   %r12
   6:	53                   	push   %rbx
   7:	49 89 f6             	mov    %rsi,%r14
   a:	49 89 ff             	mov    %rdi,%r15
   d:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  14:	fc ff df
  17:	e8 4d 4b 3e f8       	call   0xf83e4b69
  1c:	49 8d 9e a8 01 00 00 	lea    0x1a8(%r14),%rbx
  23:	49 89 dd             	mov    %rbx,%r13
  26:	49 c1 ed 03          	shr    $0x3,%r13
* 2a:	43 0f b6 44 25 00    	movzbl 0x0(%r13,%r12,1),%eax <-- trapping instruction
  30:	84 c0                	test   %al,%al
  32:	75 4d                	jne    0x81
  34:	8b 2b                	mov    (%rbx),%ebp
  36:	31 ff                	xor    %edi,%edi
  38:	89 ee                	mov    %ebp,%esi
  3a:	e8 6a 4f 3e f8       	call   0xf83e4fa9
  3f:	85                   	.byte 0x85