------------[ cut here ]------------ WARNING: CPU: 1 PID: 23275 at net/core/skbuff.c:4375 skb_try_coalesce+0xeb1/0x1270 net/core/skbuff.c:4375 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 23275 Comm: syz-executor.2 Not tainted 4.9.141+ #1 ffff8800b9dff060 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff ffffffff82c6f700 0000000000000001 0000000000000009 ffff8800b9dff120 ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x39f kernel/panic.c:179 [] __warn.cold.8+0x2f/0x2f kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] skb_try_coalesce+0xeb1/0x1270 net/core/skbuff.c:4375 [] tcp_try_coalesce+0x159/0x490 net/ipv4/tcp_input.c:4362 [] tcp_queue_rcv+0x127/0x590 net/ipv4/tcp_input.c:4614 [] tcp_data_queue+0x96d/0x38a0 net/ipv4/tcp_input.c:4723 [] tcp_rcv_established+0x53d/0x1ff0 net/ipv4/tcp_input.c:5604 [] tcp_v6_do_rcv+0xcd1/0x10e0 net/ipv6/tcp_ipv6.c:1283 [] sk_backlog_rcv include/net/sock.h:871 [inline] [] __release_sock+0x13a/0x390 net/core/sock.c:2059 [] release_sock+0x59/0x1c0 net/core/sock.c:2520 [] tcp_sendpage+0x6bf/0x1910 net/ipv4/tcp.c:1034 [] inet_sendpage+0x221/0x510 net/ipv4/af_inet.c:787 [] kernel_sendpage+0x93/0xf0 net/socket.c:3334 [] sock_sendpage+0x8c/0xc0 net/socket.c:802 [] pipe_to_sendpage+0x266/0x330 fs/splice.c:470 [] splice_from_pipe_feed fs/splice.c:521 [inline] [] __splice_from_pipe+0x316/0x710 fs/splice.c:645 [] splice_from_pipe+0xf9/0x170 fs/splice.c:680 [] generic_splice_sendpage+0x3c/0x50 fs/splice.c:851 [] do_splice_from fs/splice.c:870 [inline] [] direct_splice_actor+0x128/0x190 fs/splice.c:1037 [] splice_direct_to_actor+0x2c1/0x7e0 fs/splice.c:992 [] do_splice_direct+0x1a3/0x270 fs/splice.c:1080 [] do_sendfile+0x4f0/0xc30 fs/read_write.c:1393 [] SYSC_sendfile64 fs/read_write.c:1454 [inline] [] SyS_sendfile64+0x144/0x160 fs/read_write.c:1440 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Kernel Offset: disabled Rebooting in 86400 seconds..