netlink: 12 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor2'.
------------[ 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: 32537 Comm: syz-executor4 Not tainted 4.16.0-rc6+ #362
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: 0018:ffff8801db206ff8 EFLAGS: 00010206
RAX: ffff8801bc0da540 RBX: 0000000000000001 RCX: ffffffff84cb01c6
RDX: 0000000000000100 RSI: ffff8801c3b6ccb8 RDI: ffff8801cc9505ec
RBP: ffff8801db2073a8 R08: ffff88021fff801c R09: 0000000000000000
R10: 0000000046e237e7 R11: ffff88021fff801d R12: ffff8801cc95064e
R13: 0000000090aab014 R14: ffff8801cc9505c0 R15: ffff8801c3b6ca80
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000464ed0 CR3: 0000000006e22003 CR4: 00000000001606f0
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: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
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778 [inline]
RIP: 0010:lock_acquire+0x256/0x580 kernel/locking/lockdep.c:3923
RSP: 0018:ffff8801b780e878 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff12
RAX: dffffc0000000000 RBX: ffff8801bc0da540 RCX: 0000000000000000
RDX: 1ffffffff0dd939d RSI: 000000009fe4d8bd RDI: 0000000000000282
RBP: ffff8801b780e970 R08: 1ffff10036f01c73 R09: 0000000000000002
R10: ffff8801b780e858 R11: 0000000000000000 R12: 1ffff10036f01d15
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:244 [inline]
 rcu_read_lock include/linux/rcupdate.h:630 [inline]
 lock_page_memcg+0x8f/0x380 mm/memcontrol.c:1607
 page_remove_file_rmap mm/rmap.c:1213 [inline]
 page_remove_rmap+0x393/0xeb0 mm/rmap.c:1298
 zap_pte_range mm/memory.c:1337 [inline]
 zap_pmd_range mm/memory.c:1441 [inline]
 zap_pud_range mm/memory.c:1470 [inline]
 zap_p4d_range mm/memory.c:1491 [inline]
 unmap_page_range+0xfc3/0x22e0 mm/memory.c:1512
 unmap_single_vma+0x15f/0x2d0 mm/memory.c:1557
 unmap_vmas+0xf1/0x1b0 mm/memory.c:1587
 exit_mmap+0x23a/0x500 mm/mmap.c:3020
 __mmput kernel/fork.c:960 [inline]
 mmput+0x223/0x6d0 kernel/fork.c:981
 exit_mm kernel/exit.c:544 [inline]
 do_exit+0x90a/0x1ad0 kernel/exit.c:852
 do_group_exit+0x149/0x400 kernel/exit.c:968
 get_signal+0x73a/0x16d0 kernel/signal.c:2469
 do_signal+0x90/0x1e90 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x258/0x2f0 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x6ec/0x940 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x454239
RSP: 002b:00007f29c54b0ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000072bf80 RCX: 0000000000454239
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf80
RBP: 000000000072bf80 R08: 0000000000000000 R09: 000000000072bf58
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a3e8ef R14: 00007f29c54b19c0 R15: 0000000000000001
Code: ff e8 3f 59 de fc e9 3b f2 ff ff e8 55 59 de fc e9 ab fc ff ff 48 8b bd c8 fc ff ff e8 e4 58 de fc e9 06 e8 ff ff e8 4a 17 a6 fc <0f> 0b e8 13 59 de fc e9 cd fa ff ff 48 89 8d 78 fc ff ff e8 02 
RIP: __tcp_retransmit_skb+0x28e6/0x2cb0 net/ipv4/tcp_output.c:2864 RSP: ffff8801db206ff8
---[ end trace 9da2125ee95d2710 ]---