IPv6: ADDRCONF(NETDEV_CHANGE): syz2: link becomes ready
------------[ cut here ]------------
kernel BUG at net/ipv4/tcp_output.c:2817!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 18261 Comm: syz-executor2 Not tainted 4.13.0+ #42
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d0054140 task.stack: ffff8801a4ae8000
RIP: 0010:__tcp_retransmit_skb+0x1d18/0x1fa0 net/ipv4/tcp_output.c:2817
RSP: 0018:ffff8801db2072a8 EFLAGS: 00010206
RAX: ffff8801d0054140 RBX: 0000000000000001 RCX: 000000009496e454
RDX: 0000000000000100 RSI: ffff8801d5062780 RDI: ffff8801d50627ac
RBP: ffff8801db207468 R08: ffff88021fff901c R09: ffff88021fff9008
R10: 0000000000000000 R11: ffff88021fff901d R12: ffff8801d5062806
R13: 000000009496e7e4 R14: ffff8801d5062780 R15: ffff8801d9245200
FS:  0000000000b7a940(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a6fa18 CR3: 00000001cc086000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2891
 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+0x246/0x850 kernel/time/timer.c:1281
 expire_timers kernel/time/timer.c:1320 [inline]
 __run_timers+0x7fd/0xb90 kernel/time/timer.c:1620
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646
 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x177/0x710 arch/x86/kernel/apic/apic.c:1048
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:770
 </IRQ>
RIP: 0010:vma_compute_subtree_gap+0xb8/0x200 mm/mmap.c:267
RSP: 0018:ffff8801a4aefa28 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff8801d1b95c00 RCX: 1ffff1003a154107
RDX: ffff8801cf73e308 RSI: ffff8801c7429400 RDI: ffff8801cf73e308
RBP: ffff8801a4aefa40 R08: ffff8801d1b90f20 R09: 1ffff1003495deb8
R10: 00000000cd68dd54 R11: 0000000008b6eef0 R12: 0000000000b7a000
R13: ffff8801cf73e300 R14: ffff8801d1b90f28 R15: ffff8801d1b95c20
 vma_gap_callbacks_propagate mm/mmap.c:395 [inline]
 vma_gap_update mm/mmap.c:409 [inline]
 __vma_link_rb+0x271/0x310 mm/mmap.c:556
 __vma_link mm/mmap.c:600 [inline]
 vma_link+0x144/0x170 mm/mmap.c:614
 mmap_region+0xef0/0x15a0 mm/mmap.c:1710
 do_mmap+0x6a1/0xd50 mm/mmap.c:1467
 do_mmap_pgoff include/linux/mm.h:2108 [inline]
 vm_mmap_pgoff+0x1de/0x280 mm/util.c:333
 SYSC_mmap_pgoff mm/mmap.c:1517 [inline]
 SyS_mmap_pgoff+0x23b/0x5f0 mm/mmap.c:1475
 SYSC_mmap arch/x86/kernel/sys_x86_64.c:99 [inline]
 SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:90
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x451eaa
RSP: 002b:0000000000a6f748 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000451eaa
RDX: 0000000000000003 RSI: 0000000000021000 RDI: 0000000000000000
RBP: 0000000000000082 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000020022 R11: 0000000000000246 R12: fffffffffffffffe
R13: 0000000000718000 R14: 000000002001d000 R15: 0000000000000016
Code: ff e8 ad b3 95 fd e9 4b fb ff ff 48 8b bd a0 fe ff ff e8 fc b3 95 fd e9 fc f8 ff ff e8 f2 b3 95 fd e9 53 f6 ff ff e8 b8 b2 61 fd <0f> 0b e8 e1 b3 95 fd e9 9e e5 ff ff 4c 89 e7 e8 74 b3 95 fd e9 
RIP: __tcp_retransmit_skb+0x1d18/0x1fa0 net/ipv4/tcp_output.c:2817 RSP: ffff8801db2072a8
---[ end trace 9b3b2e207470c0f1 ]---