------------[ cut here ]------------
WARNING: CPU: 0 PID: 5114 at net/mptcp/subflow.c:1405 subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1405
Modules linked in:
CPU: 0 PID: 5114 Comm: syz-executor.5 Not tainted 6.7.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1405
Code: 89 ee e8 63 e7 21 f7 40 84 ed 75 21 e8 29 ec 21 f7 44 89 fe bf 07 00 00 00 e8 8c e7 21 f7 41 83 ff 07 74 09 e8 11 ec 21 f7 90 <0f> 0b 90 e8 08 ec 21 f7 48 89 df e8 50 b2 ff ff 31 ff 89 c5 89 c6
RSP: 0018:ffffc90000007598 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888078be2e80 RCX: ffffffff8a649434
RDX: ffff888053fe0000 RSI: ffffffff8a64943f RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000007
R10: 000000000000000b R11: 0000000000000000 R12: 1ffff92000000eb3
R13: ffff888028332d40 R14: ffff88802722ba00 R15: 000000000000000b
FS: 00005555563e1480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e25000 CR3: 0000000054912000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tcp_data_ready+0x14c/0x5b0 net/ipv4/tcp_input.c:5128
tcp_data_queue+0x19c3/0x5190 net/ipv4/tcp_input.c:5208
tcp_rcv_state_process+0x11f1/0x4e20 net/ipv4/tcp_input.c:6844
tcp_v4_do_rcv+0x369/0xa10 net/ipv4/tcp_ipv4.c:1929
tcp_v4_rcv+0x3892/0x3b40 net/ipv4/tcp_ipv4.c:2329
ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2e4/0x510 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:461 [inline]
ip_rcv_finish+0x1c4/0x2f0 net/ipv4/ip_input.c:449
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ip_rcv+0xaf/0xd0 net/ipv4/ip_input.c:569
__netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5529
__netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5643
process_backlog+0x101/0x6b0 net/core/dev.c:5971
__napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6533
napi_poll net/core/dev.c:6602 [inline]
net_rx_action+0x956/0xe90 net/core/dev.c:6735
__do_softirq+0x21a/0x8de kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x0/0x20 kernel/kcov.c:289
Code: 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 06 00 00 00 e9 08 ff ff ff 0f 1f 84 00 00 00 00 00 0f 1e fa 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9
RSP: 0018:ffffc9000372f5e0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffea00014ef940 RCX: ffffffff81e6ae6a
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000007 R12: ffff88813fff9140
R13: 0000000000000001 R14: ffffea00014ef948 R15: 0000000000000000
rcu_read_lock include/linux/rcupdate.h:748 [inline]
page_ext_get+0x1de/0x310 mm/page_ext.c:508
page_table_check_set mm/page_table_check.c:109 [inline]
page_table_check_set+0x1b5/0x9a0 mm/page_table_check.c:97
__page_table_check_ptes_set+0x1cc/0x220 mm/page_table_check.c:196
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:234 [inline]
copy_present_pte mm/memory.c:987 [inline]
copy_pte_range mm/memory.c:1091 [inline]
copy_pmd_range mm/memory.c:1176 [inline]
copy_pud_range mm/memory.c:1213 [inline]
copy_p4d_range mm/memory.c:1237 [inline]
copy_page_range+0x1524/0x3c40 mm/memory.c:1335
dup_mmap+0x13da/0x1d90 kernel/fork.c:758
dup_mm kernel/fork.c:1691 [inline]
copy_mm kernel/fork.c:1740 [inline]
copy_process+0x43c8/0x73f0 kernel/fork.c:2502
kernel_clone+0xfd/0x930 kernel/fork.c:2907
__do_sys_clone+0xba/0x100 kernel/fork.c:3050
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f15ca679b13
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd3083ca88 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15ca679b13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 00005555563e1750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
----------------
Code disassembly (best guess):
0: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
7: 00 00 00
a: f3 0f 1e fa endbr64
e: 48 8b 0c 24 mov (%rsp),%rcx
12: 48 89 f2 mov %rsi,%rdx
15: 48 89 fe mov %rdi,%rsi
18: bf 06 00 00 00 mov $0x6,%edi
1d: e9 08 ff ff ff jmp 0xffffff2a
22: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
29: 00
* 2a: f3 0f 1e fa endbr64 <-- trapping instruction
2e: 48 8b 0c 24 mov (%rsp),%rcx
32: 40 0f b6 d6 movzbl %sil,%edx
36: 40 0f b6 f7 movzbl %dil,%esi
3a: bf 01 00 00 00 mov $0x1,%edi
3f: e9 .byte 0xe9