netlink: 8 bytes leftover after parsing attributes in process `syz.1.21'.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4417 at kernel/softirq.c:383 __local_bh_enable_ip+0x176/0x1b0 kernel/softirq.c:-1
Modules linked in:
CPU: 0 PID: 4417 Comm: syz.1.21 Not tainted 6.1.139-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__local_bh_enable_ip+0x176/0x1b0 kernel/softirq.c:383
Code: 48 8b 04 25 28 00 00 00 48 3b 44 24 48 75 4e 48 8d 65 e0 5b 41 5c 41 5e 41 5f 5d c3 0f 0b e9 ff fe ff ff e8 3c 00 00 00 eb a5 <0f> 0b e9 2c ff ff ff 48 c7 c1 64 b2 fe 8d 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000473e9c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff882ae022
RBP: ffffc9000473ea58 R08: dffffc0000000000 R09: ffffed100542ccb2
R10: ffffed100542ccb2 R11: 1ffff1100542ccb1 R12: ffff88802a166680
R13: ffffea0000c04ec0 R14: dffffc0000000000 R15: 1ffff920008e7d38
FS:  00007f047a4126c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2daf7ff8 CR3: 00000000790df000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 ptr_ring_produce_bh include/linux/ptr_ring.h:164 [inline]
 page_pool_recycle_in_ring net/core/page_pool.c:545 [inline]
 page_pool_put_defragged_page+0x592/0x8c0 net/core/page_pool.c:632
 tun_ptr_free drivers/net/tun.c:617 [inline]
 __ptr_ring_swap_queue include/linux/ptr_ring.h:570 [inline]
 ptr_ring_resize_multiple include/linux/ptr_ring.h:641 [inline]
 tun_queue_resize drivers/net/tun.c:3666 [inline]
 tun_device_event+0xa62/0x1020 drivers/net/tun.c:3686
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:455
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 dev_change_tx_queue_len+0x11d/0x260 net/core/dev.c:8811
 do_setlink+0xf4e/0x3c40 net/core/rtnetlink.c:2856
 rtnl_setlink+0x35b/0x450 net/core/rtnetlink.c:3124
 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6153
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2493
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x74c/0x8c0 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x59b/0x970 net/socket.c:2519
 ___sys_sendmsg+0x21c/0x290 net/socket.c:2573
 __sys_sendmsg net/socket.c:2602 [inline]
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg+0x19e/0x270 net/socket.c:2609
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f047958e969
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:00007f047a412038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f04797b5fa0 RCX: 00007f047958e969
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 000000000000000c
RBP: 00007f0479610ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f04797b5fa0 R15: 00007ffccef3b008
 </TASK>