general protection fault, probably for non-canonical address 0xdffffc0000000036: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001b0-0x00000000000001b7]
CPU: 0 PID: 8468 Comm: syz.1.1061 Not tainted 5.15.187-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:609 [inline]
RIP: 0010:htb_qlen_notify+0x2d/0xb0 net/sched/sch_htb.c:1507
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 c1 49 7a f9 49 8d 9e b0 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 4a 8b 2b 31 ff 89 ee e8 fe 4c 7a f9 85
RSP: 0018:ffffc9000392ef38 EFLAGS: 00010206
RAX: ffffffff87fd895f RBX: 00000000000001b0 RCX: 0000000000080000
RDX: ffffc900054a1000 RSI: 00000000000002f4 RDI: 00000000000002f5
RBP: 1ffffffff1604bb0 R08: ffff888020ea8000 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000036 R14: 0000000000000000 R15: ffff88805e5d2000
FS: 00007fbd3a8906c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3074c7 CR3: 0000000052026000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
qdisc_tree_reduce_backlog+0x25f/0x430 net/sched/sch_api.c:799
codel_change+0x8d1/0xc00 net/sched/sch_codel.c:183
codel_init+0x190/0x330 net/sched/sch_codel.c:202
qdisc_create+0x7bd/0x1170 net/sched/sch_api.c:1260
tc_modify_qdisc+0xaad/0x16c0 net/sched/sch_api.c:-1
rtnetlink_rcv_msg+0x9b9/0xe60 net/core/rtnetlink.c:5650
netlink_rcv_skb+0x1e0/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x77c/0x920 net/netlink/af_netlink.c:1337
netlink_sendmsg+0x8ab/0xbc0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
__sys_sendmsg net/socket.c:2519 [inline]
__do_sys_sendmsg net/socket.c:2528 [inline]
__se_sys_sendmsg+0x190/0x250 net/socket.c:2526
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbd3ca28929
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:00007fbd3a890038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fbd3cc4ffa0 RCX: 00007fbd3ca28929
RDX: 000000000000c010 RSI: 0000200000000280 RDI: 0000000000000003
RBP: 00007fbd3caaab39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbd3cc4ffa0 R15: 00007ffda32d8fc8
</TASK>
Modules linked in:
---[ end trace 5ae4290ee3e19a03 ]---
RIP: 0010:htb_deactivate net/sched/sch_htb.c:609 [inline]
RIP: 0010:htb_qlen_notify+0x2d/0xb0 net/sched/sch_htb.c:1507
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 c1 49 7a f9 49 8d 9e b0 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 4a 8b 2b 31 ff 89 ee e8 fe 4c 7a f9 85
RSP: 0018:ffffc9000392ef38 EFLAGS: 00010206
RAX: ffffffff87fd895f RBX: 00000000000001b0 RCX: 0000000000080000
RDX: ffffc900054a1000 RSI: 00000000000002f4 RDI: 00000000000002f5
RBP: 1ffffffff1604bb0 R08: ffff888020ea8000 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000036 R14: 0000000000000000 R15: ffff88805e5d2000
FS: 00007fbd3a8906c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3074c7 CR3: 0000000052026000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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 c1 49 7a f9 call 0xf97a49dd
1c: 49 8d 9e b0 01 00 00 lea 0x1b0(%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 4a jne 0x7e
34: 8b 2b mov (%rbx),%ebp
36: 31 ff xor %edi,%edi
38: 89 ee mov %ebp,%esi
3a: e8 fe 4c 7a f9 call 0xf97a4d3d
3f: 85 .byte 0x85