------------[ cut here ]------------
WARNING: CPU: 0 PID: 5495 at net/mptcp/pm_netlink.c:1446 __mark_subflow_endp_available net/mptcp/pm_netlink.c:1446 [inline]
WARNING: CPU: 0 PID: 5495 at net/mptcp/pm_netlink.c:1446 mptcp_pm_nl_fullmesh net/mptcp/pm_netlink.c:1927 [inline]
WARNING: CPU: 0 PID: 5495 at net/mptcp/pm_netlink.c:1446 mptcp_nl_set_flags net/mptcp/pm_netlink.c:1950 [inline]
WARNING: CPU: 0 PID: 5495 at net/mptcp/pm_netlink.c:1446 mptcp_pm_nl_set_flags+0x5ea/0x690 net/mptcp/pm_netlink.c:2011
Modules linked in:
CPU: 0 UID: 0 PID: 5495 Comm: syz.0.23 Not tainted 6.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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+0x5ea/0x690 net/mptcp/pm_netlink.c:2011
Code: 89 c5 e8 c9 64 ea fc e9 2f fe ff ff 49 83 ed 80 e8 bb 64 ea fc 4c 89 ef be 03 00 00 00 e8 4e 0d cf fd eb bd e8 a7 64 ea fc 90 <0f> 0b 90 e9 4c ff ff ff e8 99 64 ea fc eb 13 e8 92 64 ea fc 48 85
RSP: 0018:ffffc900029ff920 EFLAGS: 00010293
RAX: ffffffff845362e9 RBX: 0000000000000000 RCX: ffff888111ff9c40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900029ffa00 R08: ffffffff84536221 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88810fa50000 R14: ffff88810fa50a40 R15: ffff888111e83880
FS:  00007f1bf5b486c0(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1bf5b46fb8 CR3: 0000000122158000 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+0x51f/0x5c0 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0xe8/0x1c0 net/netlink/af_netlink.c:2550
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x3ba/0x490 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x4df/0x5d0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xca/0xf0 net/socket.c:745
 ____sys_sendmsg+0x26e/0x360 net/socket.c:2597
 ___sys_sendmsg net/socket.c:2651 [inline]
 __sys_sendmsg+0x35d/0x3d0 net/socket.c:2680
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xe0/0x220 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1bf4d79e79
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:00007f1bf5b48038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1bf4f16058 RCX: 00007f1bf4d79e79
RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000009
RBP: 00007f1bf4de793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1bf4f16058 R15: 00007ffd4c6de258
 </TASK>