general protection fault, probably for non-canonical address 0xdffffc0000000036: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001b0-0x00000000000001b7]
CPU: 1 PID: 24710 Comm: syz.3.6648 Not tainted 5.15.188-syzkaller-android13-5.15.188_r00 #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+0x30/0xc0 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 be e1 94 fd 4d 8d ae b0 01 00 00 4c 89 eb 48 c1 eb 03 <42> 0f b6 04 23 84 c0 75 58 45 8b 65 00 31 ff 44 89 e6 e8 49 e5 94
RSP: 0018:ffffc90000ef6e90 EFLAGS: 00010206
RAX: ffffffff83d3ce12 RBX: 0000000000000036 RCX: 0000000000080000
RDX: ffffc9000738e000 RSI: 00000000000001e2 RDI: 00000000000001e3
RBP: ffffc90000ef6eb8 R08: ffff888131f593c0 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000002 R12: dffffc0000000000
R13: 00000000000001b0 R14: 0000000000000000 R15: ffff88811079e000
FS: 00007f06d11516c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeb169c148 CR3: 00000001155d8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
qdisc_tree_reduce_backlog+0x1e8/0x340 net/sched/sch_api.c:800
fq_codel_change+0xa71/0xf10 net/sched/sch_fq_codel.c:438
fq_codel_init+0x342/0xa20 net/sched/sch_fq_codel.c:475
qdisc_create+0x7ed/0x11a0 net/sched/sch_api.c:1261
tc_modify_qdisc+0x896/0x1480 net/sched/sch_api.c:-1
rtnetlink_rcv_msg+0x9e4/0xb90 net/core/rtnetlink.c:5650
netlink_rcv_skb+0x1e0/0x430 net/netlink/af_netlink.c:2493
rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5668
netlink_unicast_kernel net/netlink/af_netlink.c:1315 [inline]
netlink_unicast+0x87c/0xa40 net/netlink/af_netlink.c:1341
netlink_sendmsg+0x86a/0xb70 net/netlink/af_netlink.c:1909
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 net/socket.c:2526 [inline]
__x64_sys_sendmsg+0x1e2/0x2a0 net/socket.c:2526
x64_sys_call+0x4b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47
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: 0033:0x7f06d2ae89a9
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:00007f06d1151038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f06d2d0ffa0 RCX: 00007f06d2ae89a9
RDX: 0000000000004000 RSI: 0000200000000040 RDI: 0000000000000006
RBP: 00007f06d2b6ad69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f06d2d0ffa0 R15: 00007ffc7270edc8
</TASK>
Modules linked in:
---[ end trace f5a5b2a2d31430e0 ]---
RIP: 0010:htb_deactivate net/sched/sch_htb.c:609 [inline]
RIP: 0010:htb_qlen_notify+0x30/0xc0 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 be e1 94 fd 4d 8d ae b0 01 00 00 4c 89 eb 48 c1 eb 03 <42> 0f b6 04 23 84 c0 75 58 45 8b 65 00 31 ff 44 89 e6 e8 49 e5 94
RSP: 0018:ffffc90000ef6e90 EFLAGS: 00010206
RAX: ffffffff83d3ce12 RBX: 0000000000000036 RCX: 0000000000080000
RDX: ffffc9000738e000 RSI: 00000000000001e2 RDI: 00000000000001e3
RBP: ffffc90000ef6eb8 R08: ffff888131f593c0 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000002 R12: dffffc0000000000
R13: 00000000000001b0 R14: 0000000000000000 R15: ffff88811079e000
FS: 00007f06d11516c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeb169c148 CR3: 00000001155d8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 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 be e1 94 fd call 0xfd94e1da
1c: 4d 8d ae b0 01 00 00 lea 0x1b0(%r14),%r13
23: 4c 89 eb mov %r13,%rbx
26: 48 c1 eb 03 shr $0x3,%rbx
* 2a: 42 0f b6 04 23 movzbl (%rbx,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 75 58 jne 0x8b
33: 45 8b 65 00 mov 0x0(%r13),%r12d
37: 31 ff xor %edi,%edi
39: 44 89 e6 mov %r12d,%esi
3c: e8 .byte 0xe8
3d: 49 e5 94 rex.WB in $0x94,%eax