tipc: Node identity 5600e0567573, cluster identity 4711
tipc: Enabled bearer <eth:syzkaller0>, priority 0
veth0_to_hsr: entered promiscuous mode
veth0_to_hsr: entered allmulticast mode
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 1 UID: 0 PID: 8435 Comm: syz.1.781 Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:qdisc_tree_reduce_backlog+0x223/0x480
Code: 89 ef e8 00 80 b3 f8 4d 89 ef 85 db 74 0d e8 34 fc 4f f8 4c 89 f5 e9 88 00 00 00 48 8b 6d 00 48 8d 45 20 48 89 c3 48 c1 eb 03 <42> 80 3c 33 00 48 89 04 24 74 0d 48 8b 3c 24 e8 c9 7f b3 f8 48 8b
RSP: 0018:ffffc9000368f0a8 EFLAGS: 00010202
RAX: 0000000000000020 RBX: 0000000000000004 RCX: 0000000000000000
RDX: ffff888038f21cc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888038f21cc0 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000000 R12: 00000000000b0002
R13: ffff88803917a000 R14: dffffc0000000000 R15: ffff88803917a000
FS:  00007f041eff66c0(0000) GS:ffff8881a3c50000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f941cbb7bac CR3: 000000011d570000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 fq_codel_change+0xa96/0xef0
 fq_codel_init+0x355/0x960
 qdisc_create+0x7ac/0xea0
 tc_modify_qdisc+0x1426/0x2010
 rtnetlink_rcv_msg+0x77c/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75b/0x8d0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f042118e929
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:00007f041eff6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f04213b5fa0 RCX: 00007f042118e929
RDX: 0000000004008000 RSI: 0000200000000200 RDI: 0000000000000007
RBP: 00007f0421210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f04213b5fa0 R15: 00007fff7c3622b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qdisc_tree_reduce_backlog+0x223/0x480
Code: 89 ef e8 00 80 b3 f8 4d 89 ef 85 db 74 0d e8 34 fc 4f f8 4c 89 f5 e9 88 00 00 00 48 8b 6d 00 48 8d 45 20 48 89 c3 48 c1 eb 03 <42> 80 3c 33 00 48 89 04 24 74 0d 48 8b 3c 24 e8 c9 7f b3 f8 48 8b
RSP: 0018:ffffc9000368f0a8 EFLAGS: 00010202
RAX: 0000000000000020 RBX: 0000000000000004 RCX: 0000000000000000
RDX: ffff888038f21cc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888038f21cc0 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000000 R12: 00000000000b0002
R13: ffff88803917a000 R14: dffffc0000000000 R15: ffff88803917a000
FS:  00007f041eff66c0(0000) GS:ffff8881a3c50000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f941cbb7bac CR3: 000000011d570000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
