general protection fault, probably for non-canonical address 0xdffffc0000000035: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001a8-0x00000000000001af]
CPU: 1 PID: 14702 Comm: syz.3.3086 Not tainted 6.6.98-syzkaller #0
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+0x31/0xb0 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 ad 90 f4 f8 49 8d 9e a8 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 48 8b 2b 31 ff 89 ee e8 3a 94 f4 f8 85
RSP: 0018:ffffc90011feed90 EFLAGS: 00010206
RAX: ffffffff889115c3 RBX: 00000000000001a8 RCX: 0000000000080000
RDX: ffffc9000d2db000 RSI: 0000000000001a96 RDI: 0000000000001a97
RBP: dffffc0000000000 R08: ffff88802ea68000 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000035 R14: 0000000000000000 R15: ffff88805bf2c000
FS: 00007f1462fff6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d31cff8 CR3: 000000002a6e9000 CR4: 00000000003506e0
Call Trace:
<TASK>
qdisc_tree_reduce_backlog+0x28b/0x470 net/sched/sch_api.c:810
codel_change+0x974/0xdb0 net/sched/sch_codel.c:177
codel_init+0x1fd/0x3e0 net/sched/sch_codel.c:196
qdisc_create+0x8eb/0x1050 net/sched/sch_api.c:1322
tc_modify_qdisc+0xb13/0x1be0 net/sched/sch_api.c:-1
rtnetlink_rcv_msg+0x7c7/0xf10 net/core/rtnetlink.c:6475
netlink_rcv_skb+0x216/0x480 net/netlink/af_netlink.c:2537
netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline]
netlink_unicast+0x750/0x8c0 net/netlink/af_netlink.c:1349
netlink_sendmsg+0x8c1/0xbe0 net/netlink/af_netlink.c:1891
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5bf/0x950 net/socket.c:2595
___sys_sendmsg+0x220/0x290 net/socket.c:2649
__sys_sendmsg net/socket.c:2678 [inline]
__do_sys_sendmsg net/socket.c:2687 [inline]
__se_sys_sendmsg+0x1a5/0x270 net/socket.c:2685
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f146318e929
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:00007f1462fff038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f14633b5fa0 RCX: 00007f146318e929
RDX: 0000000000004000 RSI: 0000200000000140 RDI: 0000000000000003
RBP: 00007f1463210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f14633b5fa0 R15: 00007ffd9206c138
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:htb_deactivate net/sched/sch_htb.c:613 [inline]
RIP: 0010:htb_qlen_notify+0x31/0xb0 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 ad 90 f4 f8 49 8d 9e a8 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 48 8b 2b 31 ff 89 ee e8 3a 94 f4 f8 85
RSP: 0018:ffffc90011feed90 EFLAGS: 00010206
RAX: ffffffff889115c3 RBX: 00000000000001a8 RCX: 0000000000080000
RDX: ffffc9000d2db000 RSI: 0000000000001a96 RDI: 0000000000001a97
RBP: dffffc0000000000 R08: ffff88802ea68000 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000035 R14: 0000000000000000 R15: ffff88805bf2c000
FS: 00007f1462fff6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d31cff8 CR3: 000000002a6e9000 CR4: 00000000003506e0
----------------
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 ad 90 f4 f8 call 0xf8f490c9
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 48 jne 0x7c
34: 8b 2b mov (%rbx),%ebp
36: 31 ff xor %edi,%edi
38: 89 ee mov %ebp,%esi
3a: e8 3a 94 f4 f8 call 0xf8f49479
3f: 85 .byte 0x85