------------[ cut here ]------------
WARNING: CPU: 1 PID: 7324 at net/mptcp/pm_netlink.c:1446 __mark_subflow_endp_available net/mptcp/pm_netlink.c:1446 [inline]
WARNING: CPU: 1 PID: 7324 at net/mptcp/pm_netlink.c:1446 mptcp_pm_nl_fullmesh net/mptcp/pm_netlink.c:1927 [inline]
WARNING: CPU: 1 PID: 7324 at net/mptcp/pm_netlink.c:1446 mptcp_nl_set_flags net/mptcp/pm_netlink.c:1950 [inline]
WARNING: CPU: 1 PID: 7324 at net/mptcp/pm_netlink.c:1446 mptcp_pm_nl_set_flags+0x469/0x4a0 net/mptcp/pm_netlink.c:2011
Modules linked in:
CPU: 1 UID: 0 PID: 7324 Comm: syz.6.1498 Not tainted 6.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__mark_subflow_endp_available net/mptcp/pm_netlink.c:1446 [inline]
RIP: 0010:mptcp_pm_nl_fullmesh net/mptcp/pm_netlink.c:1927 [inline]
RIP: 0010:mptcp_nl_set_flags net/mptcp/pm_netlink.c:1950 [inline]
RIP: 0010:mptcp_pm_nl_set_flags+0x469/0x4a0 net/mptcp/pm_netlink.c:2011
Code: 80 00 00 00 83 f8 01 0f 84 d4 fe ff ff 0f 8d d6 fe ff ff 48 83 eb 80 48 89 df be 03 00 00 00 e8 ad 55 12 ff e9 c0 fe ff ff 90 <0f> 0b 90 eb a8 31 c0 65 48 8b 0c 25 28 00 00 00 48 3b 8c 24 90 00
RSP: 0018:ffffc9000305f960 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888105bc5a00 RCX: 0000000000000001
RDX: 8aa32935f1c69eba RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000305fa28 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 000000000000000d R14: ffff888105bc6438 R15: ffff8881097ab380
FS:  00007f42afb746c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f42aed6b7e0 CR3: 0000000104704000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
 genl_rcv_msg+0x391/0x3d0 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0xe0/0x110 net/netlink/af_netlink.c:2550
 genl_rcv+0x23/0x30 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x1de/0x2d0 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x33c/0x3e0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x8e/0xb0 net/socket.c:745
 ____sys_sendmsg+0x1a7/0x200 net/socket.c:2597
 ___sys_sendmsg net/socket.c:2651 [inline]
 __sys_sendmsg+0x2c7/0x310 net/socket.c:2680
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xe0/0x1f0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f42aed85d29
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:00007f42afb74038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f42aef75fa0 RCX: 00007f42aed85d29
RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000007
RBP: 00007f42aee01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f42aef75fa0 R15: 00007ffda0404768
 </TASK>