------------[ cut here ]------------ WARNING: CPU: 1 PID: 20096 at net/core/dev.c:2462 skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2457 lo: caps=(0x000000a2803b7c69, 0x0000000000000000) len=312 data_len=0 gso_size=10240 gso_type=5 ip_summed=0 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 20096 Comm: syz-executor4 Not tainted 4.9.44-g34803e7 #33 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d94ef2f8 ffffffff81d929c9 ffffffff83a46b40 ffff8801d94ef3d0 ffffffff83edf700 ffffffff82f292cf 0000000000000009 ffff8801d94ef3c0 ffffffff8142e101 0000000041b58ab3 ffffffff84184170 ffffffff8142df45 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bc/0x3a8 kernel/panic.c:179 [] __warn+0x1c4/0x1e0 kernel/panic.c:542 [] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565 [] skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2457 [] __skb_gso_segment+0x52b/0x670 net/core/dev.c:2763 [] skb_gso_segment include/linux/netdevice.h:3995 [inline] [] validate_xmit_skb+0x44e/0x980 net/core/dev.c:2999 [] __dev_queue_xmit+0xa17/0x1e60 net/core/dev.c:3413 [] ? 0xffffffff810002b8 [] dev_queue_xmit+0x17/0x20 net/core/dev.c:3454 [] packet_snd net/packet/af_packet.c:2944 [inline] [] packet_sendmsg+0x2d07/0x47e0 net/packet/af_packet.c:2969 [] sock_sendmsg_nosec net/socket.c:635 [inline] [] sock_sendmsg+0xca/0x110 net/socket.c:645 [] ___sys_sendmsg+0x320/0x7e0 net/socket.c:1968 [] __sys_sendmmsg+0x159/0x3a0 net/socket.c:2058 [] SYSC_sendmmsg net/socket.c:2089 [inline] [] SyS_sendmmsg+0x35/0x60 net/socket.c:2084 [] entry_SYSCALL_64_fastpath+0x23/0xc6 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..