------------[ cut here ]------------
WARNING: CPU: 0 PID: 14538 at net/core/skbuff.c:4398 skb_try_coalesce+0xeb7/0x1260 net/core/skbuff.c:4398
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=14541 comm=syz-executor.4
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 14538 Comm: syz-executor.3 Not tainted 4.9.194+ #0
 ffff8801cb22f030 ffffffff81b67001 0000000000000000 ffffffff82a3b3c0
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801cb22f110
 ffffffff813fef3a 0000000041b58ab3 ffffffff82e32f55 ffffffff813fed61
Call Trace:
 [<000000009f96a087>] __dump_stack lib/dump_stack.c:15 [inline]
 [<000000009f96a087>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<0000000001c1ffca>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<00000000a517d2a4>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<000000005eaa4133>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<0000000030ec33c7>] skb_try_coalesce+0xeb7/0x1260 net/core/skbuff.c:4398
 [<0000000007395f1a>] tcp_try_coalesce+0x173/0x4e0 net/ipv4/tcp_input.c:4378
 [<00000000ad4cbd2a>] tcp_queue_rcv+0x129/0x5a0 net/ipv4/tcp_input.c:4630
 [<000000005a043f21>] tcp_data_queue+0x600/0x3810 net/ipv4/tcp_input.c:4739
 [<000000004af70926>] tcp_rcv_established+0x55a/0x20b0 net/ipv4/tcp_input.c:5620
 [<0000000050f938b9>] tcp_v6_do_rcv+0xcd9/0x10f0 net/ipv6/tcp_ipv6.c:1283
 [<000000008e5ba31b>] sk_backlog_rcv include/net/sock.h:881 [inline]
 [<000000008e5ba31b>] __release_sock+0x138/0x390 net/core/sock.c:2060
 [<00000000a9075c2f>] release_sock+0x59/0x1c0 net/core/sock.c:2524
 [<000000004da2c85b>] tcp_sendpage net/ipv4/tcp.c:1034 [inline]
 [<000000004da2c85b>] tcp_sendpage+0x6b4/0x18f0 net/ipv4/tcp.c:1019
 [<00000000c2f8395d>] inet_sendpage+0x223/0x520 net/ipv4/af_inet.c:783
 [<000000002f41597d>] kernel_sendpage+0x95/0xf0 net/socket.c:3326
 [<0000000095c13565>] sock_sendpage+0x8b/0xc0 net/socket.c:803
 [<0000000032541f25>] pipe_to_sendpage+0x28d/0x3d0 fs/splice.c:470
 [<0000000018e11e4f>] splice_from_pipe_feed fs/splice.c:521 [inline]
 [<0000000018e11e4f>] __splice_from_pipe+0x351/0x790 fs/splice.c:645
 [<00000000cf50637a>] splice_from_pipe+0x108/0x170 fs/splice.c:680
 [<0000000047811728>] generic_splice_sendpage+0x3c/0x50 fs/splice.c:851
 [<000000006c894a70>] do_splice_from fs/splice.c:870 [inline]
 [<000000006c894a70>] direct_splice_actor+0x126/0x1a0 fs/splice.c:1037
 [<00000000140e79a3>] splice_direct_to_actor+0x2c8/0x820 fs/splice.c:992
 [<000000002e07f447>] do_splice_direct+0x1a5/0x260 fs/splice.c:1080
 [<000000000b5dcd4c>] do_sendfile+0x503/0xc00 fs/read_write.c:1402
 [<00000000bc260a35>] SYSC_sendfile64 fs/read_write.c:1463 [inline]
 [<00000000bc260a35>] SyS_sendfile64+0x145/0x160 fs/read_write.c:1449
out of order segment: rcv_next 692EBD5B seq 692EC0A3 - 692EC10B
out of order segment: rcv_next 692EBD5B seq 692EC10B - 692EC15F
prune_queue: c=692ebc93
out of order segment: rcv_next 692EBD5B seq 692EC15F - 692EC1B3
prune_queue: c=692ebc93
out of order segment: rcv_next 692EBE77 seq 692EBE7F - 692EBE9B
prune_queue: c=692ebc93
out of order segment: rcv_next 692EBE77 seq 692EBF03 - 692EBF6B
out of order segment: rcv_next 692EBE77 seq 692EBF6B - 692EBFBF
out of order segment: rcv_next 692EBE77 seq 692EBFBF - 692EC013
prune_queue: c=692ebc93
out of order segment: rcv_next 692EBE77 seq 692EC013 - 692EC067
out of order segment: rcv_next 692EBE77 seq 692EC067 - 692EC0A3
ofo requeuing : rcv_next 692EBE7F seq 692EBE7F - 692EC0A3
ofo requeuing : rcv_next 692EC0A3 seq 692EC0A3 - 692EC15F
 [<000000005bd032aa>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000ed188ab0>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..