------------[ cut here ]------------ kernel BUG at net/ipv4/tcp_output.c:2864! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 10101 Comm: syz-executor7 Not tainted 4.16.0-rc6+ #363 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__tcp_retransmit_skb+0x28e6/0x2cb0 net/ipv4/tcp_output.c:2864 RSP: 0000:ffff8801db206ff8 EFLAGS: 00010206 RAX: ffff8801b6e82740 RBX: 0000000000000001 RCX: ffffffff84cb11c6 RDX: 0000000000000100 RSI: ffff8801cb9eacb8 RDI: ffff8801b0c52cec RBP: ffff8801db2073a8 R08: ffff88021fff801c R09: 0000000000000000 R10: 000000002f16d204 R11: ffff88021fff801d R12: ffff8801b0c52d4e R13: 00000000aa368966 R14: ffff8801b0c52cc0 R15: ffff8801cb9eaa80 FS: 00000000027f4940(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000728030 CR3: 00000001c183b005 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2950 tcp_retransmit_timer+0xefc/0x2dd0 net/ipv4/tcp_timer.c:488 tcp_write_timer_handler+0x335/0x820 net/ipv4/tcp_timer.c:573 tcp_write_timer+0x153/0x170 net/ipv4/tcp_timer.c:593 call_timer_fn+0x228/0x820 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1666 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:541 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857 RIP: 0033:0x407ff2 RSP: 002b:0000000000a3e9e0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff12 RAX: 000000000d7f3456 RBX: 000000000000007e RCX: 0000000000008471 RDX: 0000000000000000 RSI: 0000000000001456 RDI: 000000000d7f3456 RBP: 0000000000000124 R08: 000000000d7f345a R09: 0000000000000000 R10: 0000000000a3ea10 R11: 0000000000000246 R12: 00000000e8b05742 R13: 0000000000000000 R14: 000000000072bea0 R15: 0000000000000002 Code: ff e8 af 4f de fc e9 3b f2 ff ff e8 c5 4f de fc e9 ab fc ff ff 48 8b bd c8 fc ff ff e8 54 4f de fc e9 06 e8 ff ff e8 aa 0a a6 fc <0f> 0b e8 83 4f de fc e9 cd fa ff ff 48 89 8d 78 fc ff ff e8 72 RIP: __tcp_retransmit_skb+0x28e6/0x2cb0 net/ipv4/tcp_output.c:2864 RSP: ffff8801db206ff8 ---[ end trace 81615a114fa509a0 ]---