BUG: using __this_cpu_write() in preemptible [00000000] code: syz.0.17/5875 caller is tcp_v4_do_rcv+0xb4a/0x13e0 net/ipv4/tcp_ipv4.c:1881 CPU: 0 UID: 0 PID: 5875 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 check_preemption_disabled+0xd3/0xe0 lib/smp_processor_id.c:47 tcp_v4_do_rcv+0xb4a/0x13e0 net/ipv4/tcp_ipv4.c:1881 sk_backlog_rcv include/net/sock.h:1190 [inline] __release_sock+0x265/0x3a0 net/core/sock.c:3216 release_sock+0x190/0x260 net/core/sock.c:3815 mptcp_pm_rm_addr_or_subflow+0x472/0x9d0 net/mptcp/pm.c:789 mptcp_nl_remove_id_zero_address net/mptcp/pm_kernel.c:1140 [inline] mptcp_pm_nl_del_addr_doit+0x503/0x1430 net/mptcp/pm_kernel.c:1176 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:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 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: 0033:0x7f6847f9cdd9 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:00007f6848e95028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6848215fa0 RCX: 00007f6847f9cdd9 RDX: 0000000024000800 RSI: 0000200000000140 RDI: 0000000000000004 RBP: 00007f6848032d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6848216038 R14: 00007f6848215fa0 R15: 00007ffe50763178