------------[ cut here ]------------
WARNING: CPU: 0 PID: 19123 at net/mptcp/subflow.c:1406 subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405
Modules linked in:
CPU: 0 PID: 19123 Comm: syz-executor.0 Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405
lr : subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405
sp : ffff800080007070
x29: ffff800080007070 x28: ffff000103cb2310 x27: ffff000103cb23e0
x26: 1fffe0001eb9def3 x25: 0000000000000800 x24: ffff0000c71bd600
x23: dfff800000000000 x22: ffff80008e33d3a8 x21: 0000000000000000
x20: ffff0000d90c0000 x19: ffff000103cb1880 x18: 000000000000004f
x17: 0000000000000000 x16: ffff800080515ce8 x15: 0000000000000001
x14: 1fffe00020796312 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000101 x10: 0000000000000100 x9 : 0000000000000000
x8 : ffff0000f7d59bc0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff80008a61db04
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 subflow_data_ready+0x294/0x4bc net/mptcp/subflow.c:1405
 tcp_data_ready+0x22c/0x44c net/ipv4/tcp_input.c:5034
 tcp_data_queue+0x1cf8/0x5430 net/ipv4/tcp_input.c:5114
 tcp_rcv_state_process+0x204c/0x3e58 net/ipv4/tcp_input.c:6728
 tcp_v4_do_rcv+0x5f0/0xe00 net/ipv4/tcp_ipv4.c:1751
 tcp_v4_rcv+0x22b8/0x2c74 net/ipv4/tcp_ipv4.c:2151
 ip_protocol_deliver_rcu+0x1f8/0x47c net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x23c/0x46c net/ipv4/ip_input.c:233
 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:304
 ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:468 [inline]
 ip_rcv_finish+0x224/0x250 net/ipv4/ip_input.c:449
 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:304
 ip_rcv+0x78/0x98 net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core net/core/dev.c:5552 [inline]
 __netif_receive_skb+0x18c/0x400 net/core/dev.c:5666
 process_backlog+0x3c0/0x70c net/core/dev.c:5994
 __napi_poll+0xb4/0x648 net/core/dev.c:6556
 napi_poll net/core/dev.c:6623 [inline]
 net_rx_action+0x5e4/0xdc4 net/core/dev.c:6756
 __do_softirq+0x2d0/0xd54 kernel/softirq.c:553
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:886
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:434 [inline]
 __irq_exit_rcu+0x200/0x494 kernel/softirq.c:632
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:644
 __el1_irq arch/arm64/kernel/entry-common.c:503 [inline]
 el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:517
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:522
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:591
 local_daif_restore arch/arm64/include/asm/daifflags.h:117 [inline]
 do_notify_resume+0x1a8/0x393c arch/arm64/kernel/signal.c:1290
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
irq event stamp: 5255
hardirqs last  enabled at (5254): [<ffff80008a8076c4>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (5254): [<ffff80008a8076c4>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194
hardirqs last disabled at (5255): [<ffff80008a716d60>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436
softirqs last  enabled at (5004): [<ffff800080031c3c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (5023): [<ffff80008002aadc>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
---[ end trace 0000000000000000 ]---