------------[ cut here ]------------
WARNING: CPU: 1 PID: 32203 at net/core/skbuff.c:4398 skb_try_coalesce+0xeb7/0x1260 net/core/skbuff.c:4398
devpts: called with bogus options
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 32203 Comm: syz-executor.2 Not tainted 4.9.202+ #0
 ffff8801d1fff030 ffffffff81b55d2b 0000000000000000 ffffffff82a3b700
 00000000ffffffff 0000000000000001 0000000000000009 ffff8801d1fff110
 ffffffff813fef21 0000000041b58ab3 ffffffff82e316f3 ffffffff813fed41
Call Trace:
 [<00000000b0306232>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000b0306232>] dump_stack+0xcb/0x130 lib/dump_stack.c:56
 [<00000000032a1a35>] panic+0x1e0/0x3c4 kernel/panic.c:181
 [<000000000be78e3b>] __warn.cold+0x2f/0x2f kernel/panic.c:547
 [<000000004b4d8e05>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:590
 [<0000000037a2c03b>] skb_try_coalesce+0xeb7/0x1260 net/core/skbuff.c:4398
 [<00000000e9d8a6b6>] tcp_try_coalesce+0x173/0x4e0 net/ipv4/tcp_input.c:4378
 [<0000000044296972>] tcp_queue_rcv+0x129/0x5a0 net/ipv4/tcp_input.c:4630
 [<00000000b25f9bd8>] tcp_data_queue+0x600/0x3810 net/ipv4/tcp_input.c:4739
 [<00000000eaa8f0e2>] tcp_rcv_established+0x55a/0x20b0 net/ipv4/tcp_input.c:5620
 [<00000000d1db1551>] tcp_v6_do_rcv+0xcd9/0x10f0 net/ipv6/tcp_ipv6.c:1283
 [<0000000053e18209>] sk_backlog_rcv include/net/sock.h:881 [inline]
 [<0000000053e18209>] __release_sock+0x138/0x390 net/core/sock.c:2065
 [<00000000b8d3c082>] release_sock+0x59/0x1c0 net/core/sock.c:2529
 [<00000000c12b4265>] tcp_sendpage net/ipv4/tcp.c:1034 [inline]
 [<00000000c12b4265>] tcp_sendpage+0x6b4/0x18f0 net/ipv4/tcp.c:1019
 [<00000000ef4e4e03>] inet_sendpage+0x223/0x520 net/ipv4/af_inet.c:783
devpts: called with bogus options
 [<00000000f5823745>] kernel_sendpage+0x95/0xf0 net/socket.c:3326
 [<000000009a76822f>] sock_sendpage+0x8b/0xc0 net/socket.c:803
 [<0000000027713707>] pipe_to_sendpage+0x28d/0x3d0 fs/splice.c:470
 [<00000000608f9f1a>] splice_from_pipe_feed fs/splice.c:521 [inline]
 [<00000000608f9f1a>] __splice_from_pipe+0x351/0x790 fs/splice.c:645
 [<00000000e8bc081f>] splice_from_pipe+0x108/0x170 fs/splice.c:680
 [<00000000b3b79757>] generic_splice_sendpage+0x3c/0x50 fs/splice.c:851
 [<00000000bda5d074>] do_splice_from fs/splice.c:870 [inline]
 [<00000000bda5d074>] direct_splice_actor+0x126/0x1a0 fs/splice.c:1037
 [<000000001ce1ba36>] splice_direct_to_actor+0x2c8/0x820 fs/splice.c:992
 [<000000009cc8a3f6>] do_splice_direct+0x1a5/0x260 fs/splice.c:1080
 [<000000000dda2964>] do_sendfile+0x503/0xc00 fs/read_write.c:1402
 [<000000009a5b11c5>] SYSC_sendfile64 fs/read_write.c:1463 [inline]
 [<000000009a5b11c5>] SyS_sendfile64+0x145/0x160 fs/read_write.c:1449
 [<000000008620a13d>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<000000003edae8a1>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..