netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'.
------------[ cut here ]------------
kernel BUG at net/ipv4/tcp_output.c:2815!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 267 Comm: kworker/u4:5 Not tainted 4.13.0-rc6+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound call_usermodehelper_exec_work
task: ffff8801d90483c0 task.stack: ffff8801d9210000
RIP: 0010:__tcp_retransmit_skb+0x1d18/0x1fa0 net/ipv4/tcp_output.c:2815
RSP: 0018:ffff8801db207408 EFLAGS: 00010206
RAX: ffff8801d90483c0 RBX: 0000000000000001 RCX: 000000001287a925
RDX: 0000000000000100 RSI: ffff8801c5c2b7c0 RDI: ffff8801c5c2b7ec
RBP: ffff8801db2075c8 R08: ffff88021fff901c R09: ffff88021fff9008
R10: 0000000000000000 R11: ffff88021fff901d R12: ffff8801c5c2b846
R13: 000000001287acb5 R14: ffff8801c5c2b7c0 R15: ffff8801c8c9c000
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae3072e820 CR3: 00000001c043d000 CR4: 00000000001406f0
Call Trace:
 <IRQ>
 tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2889
 tcp_retransmit_timer+0xcee/0x2a10 net/ipv4/tcp_timer.c:476
 tcp_write_timer_handler+0x335/0x810 net/ipv4/tcp_timer.c:561
 tcp_write_timer+0x146/0x160 net/ipv4/tcp_timer.c:579
 call_timer_fn+0x233/0x830 kernel/time/timer.c:1268
 expire_timers kernel/time/timer.c:1307 [inline]
 __run_timers+0x7fd/0xb90 kernel/time/timer.c:1601
 run_timer_softirq+0x21/0x80 kernel/time/timer.c:1614
 __do_softirq+0x2f5/0xba3 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1cc/0x200 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:1044
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:702
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:814 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x5e/0xba kernel/locking/spinlock.c:191
RSP: 0018:ffff8801d9216900 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 0000000000000006
RDX: 1ffffffff0b59431 RSI: 1ffff1003b209196 RDI: 0000000000000286
RBP: ffff8801d9216910 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d044a940
R13: ffff8801d9216948 R14: ffff8801db225780 R15: ffff8801d9216988
 </IRQ>
 task_rq_unlock kernel/sched/sched.h:1706 [inline]
 cpu_cgroup_fork+0xe3/0x120 kernel/sched/core.c:6287
 cgroup_post_fork+0x12a/0x420 kernel/cgroup/cgroup.c:4907
 copy_process.part.34+0x37a7/0x4bd0 kernel/fork.c:1907
 copy_process kernel/fork.c:1545 [inline]
 _do_fork+0x1ef/0xfb0 kernel/fork.c:2026
 kernel_thread+0x34/0x40 kernel/fork.c:2088
 call_usermodehelper_exec_sync kernel/kmod.c:292 [inline]
 call_usermodehelper_exec_work+0xfe/0x2c0 kernel/kmod.c:344
 process_one_work+0xbf3/0x1bc0 kernel/workqueue.c:2097
 worker_thread+0x223/0x1860 kernel/workqueue.c:2231
 kthread+0x35e/0x430 kernel/kthread.c:231
 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:425
Code: ff e8 ad 5c 95 fd e9 4b fb ff ff 48 8b bd a0 fe ff ff e8 fc 5c 95 fd e9 fc f8 ff ff e8 f2 5c 95 fd e9 53 f6 ff ff e8 e8 6c 61 fd <0f> 0b e8 e1 5c 95 fd e9 9e e5 ff ff 4c 89 e7 e8 74 5c 95 fd e9 
RIP: __tcp_retransmit_skb+0x1d18/0x1fa0 net/ipv4/tcp_output.c:2815 RSP: ffff8801db207408
---[ end trace 57cc49751aa09bc1 ]---