------------[ cut here ]------------
WARNING: CPU: 0 PID: 12 at net/mptcp/protocol.c:1001 __mptcp_clean_una+0x257/0xb40 net/mptcp/protocol.c:1001
Modules linked in:
CPU: 0 PID: 12 Comm: kworker/u4:1 Not tainted 6.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: krdsd rds_tcp_accept_worker
RIP: 0010:__mptcp_clean_una+0x257/0xb40 net/mptcp/protocol.c:1001
Code: 3c ff ff ff 4c 89 ef e8 e7 53 9c fa e9 2f ff ff ff 48 8b 4c 24 28 80 e1 07 38 c1 7c 90 48 8b 7c 24 28 e8 9c 53 9c fa eb 84 90 <0f> 0b 90 48 8b 44 24 40 42 80 3c 28 00 74 0a 48 8b 7c 24 38 e8 10
RSP: 0018:ffffc90000006dc0 EFLAGS: 00010246
RAX: ffff88807bb9c248 RBX: ffff88807bb9c328 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888013768010
RBP: ffffc90000006eb0 R08: ffffea0001dbfe37 R09: 1ffffd40003b7fc6
R10: dffffc0000000000 R11: fffff940003b7fc7 R12: 1ffff110026ed000
R13: dffffc0000000000 R14: ffff888013768000 R15: 5da6b9d945c93563
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000201c7000 CR3: 0000000016fce000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __mptcp_data_acked+0x105/0x380 net/mptcp/protocol.c:3308
 mptcp_incoming_options+0x8bf/0x1f20 net/mptcp/options.c:1135
 tcp_data_queue+0xe0/0x75e0 net/ipv4/tcp_input.c:5156
 tcp_rcv_established+0x1002/0x2150 net/ipv4/tcp_input.c:6170
 tcp_v4_do_rcv+0x27b/0xa70 net/ipv4/tcp_ipv4.c:1906
 tcp_v4_rcv+0x263a/0x2ea0 net/ipv4/tcp_ipv4.c:2329
 ip_protocol_deliver_rcu+0x182/0x310 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x248/0x480 net/ipv4/ip_input.c:233
 NF_HOOK+0x28c/0x340 include/linux/netfilter.h:314
 NF_HOOK+0x28c/0x340 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5534 [inline]
 __netif_receive_skb+0x257/0x5d0 net/core/dev.c:5648
 process_backlog+0x318/0x690 net/core/dev.c:5976
 __napi_poll+0x97/0x390 net/core/dev.c:6576
 napi_poll net/core/dev.c:6645 [inline]
 net_rx_action+0x6c0/0xe20 net/core/dev.c:6778
 __do_softirq+0x2bb/0x942 kernel/softirq.c:553
 do_softirq+0x11b/0x1e0 kernel/softirq.c:454
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:381
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:820 [inline]
 __dev_queue_xmit+0x154a/0x2fe0 net/core/dev.c:4378
 dev_queue_xmit include/linux/netdevice.h:3171 [inline]
 neigh_hh_output include/net/neighbour.h:526 [inline]
 neigh_output include/net/neighbour.h:540 [inline]
 ip_finish_output2+0xb1b/0xde0 net/ipv4/ip_output.c:235
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 __ip_queue_xmit+0xe81/0x17b0 net/ipv4/ip_output.c:535
 __tcp_transmit_skb+0x1d35/0x3600 net/ipv4/tcp_output.c:1462
 tcp_transmit_skb net/ipv4/tcp_output.c:1480 [inline]
 tcp_write_xmit+0x1623/0x5f20 net/ipv4/tcp_output.c:2792
 __tcp_push_pending_frames+0x85/0x2d0 net/ipv4/tcp_output.c:2977
 __tcp_close+0x8d1/0xbe0 net/ipv4/tcp.c:2842
 tcp_close+0x1f/0x80 net/ipv4/tcp.c:2931
 inet_release+0x105/0x150 net/ipv4/af_inet.c:436
 __sock_release net/socket.c:659 [inline]
 sock_release+0x78/0x130 net/socket.c:687
 rds_tcp_accept_one+0x178/0xae0 net/rds/tcp_listen.c:230
 rds_tcp_accept_worker+0x61/0x70 net/rds/tcp.c:532
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x832/0x1100 kernel/workqueue.c:2706
 worker_thread+0x887/0xd50 kernel/workqueue.c:2787
 kthread+0x2df/0x370 kernel/kthread.c:388
 ret_from_fork+0x32/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>