------------[ cut here ]------------ atomic_read(&sk->sk_rmem_alloc) WARNING: net/ipv4/af_inet.c:159 at inet_sock_destruct+0x603/0x740 net/ipv4/af_inet.c:159, CPU#1: syz.5.4387/22599 Modules linked in: CPU: 1 UID: 0 PID: 22599 Comm: syz.5.4387 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:inet_sock_destruct+0x603/0x740 net/ipv4/af_inet.c:159 Code: 00 41 0f b6 74 24 12 48 c7 c7 40 7d e9 8c 4c 89 e2 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 43 59 00 f7 e8 ae 57 9e f7 90 <0f> 0b 90 e9 58 fe ff ff e8 a0 57 9e f7 90 0f 0b 90 e9 8b fe ff ff RSP: 0018:ffffc9000d58efd8 EFLAGS: 00010287 RAX: ffffffff8a275482 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9001b0ee000 RSI: 000000000000488d RDI: 000000000000488e RBP: 00000000000003f0 R08: ffff88805581a9c3 R09: 1ffff1100ab03538 R10: dffffc0000000000 R11: ffffed100ab03539 R12: ffff88805581a880 R13: ffff88805581a880 R14: ffff88805581a9c0 R15: 1ffff1100ab03512 FS: 00007f81deffb6c0(0000) GS:ffff888125389000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe114c2e70 CR3: 0000000031054000 CR4: 00000000003526f0 Call Trace: __sk_destruct+0x8d/0x9d0 net/core/sock.c:2352 sock_put include/net/sock.h:2010 [inline] __mptcp_close_ssk+0x886/0x1180 net/mptcp/protocol.c:2614 mptcp_pm_rm_addr_or_subflow+0x4ab/0x9d0 net/mptcp/pm.c:771 mptcp_nl_remove_id_zero_address net/mptcp/pm_kernel.c:1137 [inline] mptcp_pm_nl_del_addr_doit+0x503/0x1430 net/mptcp/pm_kernel.c:1173 genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1895 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f81de19cdd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f81deffb028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f81de416090 RCX: 00007f81de19cdd9 RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000005 RBP: 00007f81de232d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f81de416128 R14: 00007f81de416090 R15: 00007ffca8dc01b8