kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access[   33.098888] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor0/3772
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3772 Comm: syz-executor0 Not tainted 4.4.106-g1700518 #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 49ee566845d738ea ffff8801c674f6c8 ffffffff81d02f7d
 0000000000000001 ffffffff839fd4a0 ffffffff83d093a0 ffff8801c6740000
 0000000000000003 ffff8801c674f708 ffffffff81d62904 ffff8801c674f720
Call Trace:
 [<ffffffff81d02f7d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d02f7d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81d62904>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3762 Comm: syz-executor5 Not tainted 4.4.106-g1700518 #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800bbaf17c0 task.stack: ffff8800bb198000
RIP: 0010:[<ffffffff82f84110>]  [<ffffffff82f84110>] netlink_getsockbyportid net/netlink/af_netlink.c:1058 [inline]
RIP: 0010:[<ffffffff82f84110>]  [<ffffffff82f84110>] netlink_unicast+0x1c0/0x760 net/netlink/af_netlink.c:1243
RSP: 0018:ffff8800bb19f7f8  EFLAGS: 00010212
RAX: dffffc0000000048 RBX: dffffc0000000000 RCX: ffffffff82f84109
RDX: 000000000000041a RSI: ffffc900013ad000 RDI: ffff8801d3b88718
RBP: ffff8800bb19f8b8 R08: ffffed00159e4807 R09: ffffed00159e4807
R10: 0000000000000005 R11: ffffed00159e4806 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8801d3b88640 R15: dffffc0000000006
FS:  00007fb548578700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000071c000 CR3: 00000001cedd6000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 1ffff10017633f06 ffff8800acf24000 0000000000000240 0000000000000030
 1ffff10017633f06 dffffc0000000048 0000000000000015 0000000041b58ab3
 ffffffff83ffd4e6 ffffffff82f83f50 ffff8800bb19f870 0000000000000000
Call Trace:
 [<ffffffff82f85531>] netlink_ack+0x231/0x4b0 net/netlink/af_netlink.c:2278
 [<ffffffff82f932b2>] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:319 [inline]
 [<ffffffff82f932b2>] nfnetlink_rcv+0xaa2/0x1070 net/netfilter/nfnetlink.c:477
 [<ffffffff82f84472>] netlink_unicast_kernel net/netlink/af_netlink.c:1223 [inline]
 [<ffffffff82f84472>] netlink_unicast+0x522/0x760 net/netlink/af_netlink.c:1249
 [<ffffffff82f84f98>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1803
 [<ffffffff82de712a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82de712a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82de7396>] sock_write_iter+0x226/0x3b0 net/socket.c:834
 [<ffffffff81519e0c>] new_sync_write fs/read_write.c:478 [inline]
 [<ffffffff81519e0c>] __vfs_write+0x33c/0x450 fs/read_write.c:491
 [<ffffffff8151ba3a>] vfs_write+0x18a/0x530 fs/read_write.c:538
 [<ffffffff8151e129>] SYSC_write fs/read_write.c:585 [inline]
 [<ffffffff8151e129>] SyS_write+0xd9/0x1b0 fs/read_write.c:577
 [<ffffffff8376ef36>] entry_SYSCALL_64_fastpath+0x16/0x76
Code: d7 88 3d fe 48 8d 55 98 4c 89 e1 4c 89 f6 48 89 df e8 95 f7 ff ff 83 f8 01 0f 85 e1 03 00 00 e8 b7 88 3d fe 48 8b 85 68 ff ff ff <0f> b6 00 84 c0 74 08 3c 03 0f 8e 63 05 00 00 41 80 3f 00 41 0f 
RIP  [<ffffffff82f84110>] netlink_getsockbyportid net/netlink/af_netlink.c:1058 [inline]
RIP  [<ffffffff82f84110>] netlink_unicast+0x1c0/0x760 net/netlink/af_netlink.c:1243
 RSP <ffff8800bb19f7f8>
---[ end trace bc23b23ed0aa6d5e ]---