======================================
| [  837.837464][    C1] ==================================================================
| [  837.837970][    C1] BUG: KASAN: slab-out-of-bounds in tcp_v6_send_response.isra.0 (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/net/inet_sock.h:411 net/ipv6/tcp_ipv6.c:983)
| [  837.838578][    C1] Read of size 8 at addr ff1100000c8be708 by task iperf3/23557
| [  837.839109][    C1]
[  837.839296][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  837.839299][    C1] Call Trace:
[  837.839304][    C1]  <IRQ>
[  837.839306][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  837.839319][    C1]  print_address_description.constprop.0 (mm/kasan/report.c:378)
[  837.839330][    C1]  print_report (mm/kasan/report.c:482)
[  837.839333][    C1]  ? __virt_addr_valid (./include/linux/rcupdate.h:948 ./include/linux/mmzone.h:2276 arch/x86/mm/physaddr.c:54)
[  837.839337][    C1]  ? __virt_addr_valid (./include/linux/rcupdate.h:974 (discriminator 1) ./include/linux/mmzone.h:2286 (discriminator 1) arch/x86/mm/physaddr.c:54 (discriminator 1))
[  837.839341][    C1]  kasan_report (mm/kasan/report.c:595)
[  837.839344][    C1]  ? tcp_v6_send_response.isra.0 (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/net/inet_sock.h:411 net/ipv6/tcp_ipv6.c:983)
[  837.839349][    C1]  ? tcp_v6_send_response.isra.0 (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/net/inet_sock.h:411 net/ipv6/tcp_ipv6.c:983)
[  837.839355][    C1]  kasan_check_range (mm/kasan/generic.c:186 mm/kasan/generic.c:200)
[  837.839360][    C1]  tcp_v6_send_response.isra.0 (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/net/inet_sock.h:411 net/ipv6/tcp_ipv6.c:983)
[  837.839368][    C1]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[  837.839376][    C1]  ? __xfrm_policy_check2.constprop.0 (net/ipv4/ip_input.c:414 (discriminator 5))
[  837.839384][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  837.839388][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  837.839391][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[  837.839394][    C1]  tcp_v6_rcv (net/ipv6/tcp_ipv6.c:1149 net/ipv6/tcp_ipv6.c:1201 net/ipv6/tcp_ipv6.c:1993)
[  837.839402][    C1]  ? tcp_v6_syn_recv_sock (./include/net/sock.h:2479)
[  837.839408][    C1]  ? ipv6_raw_deliver (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/ipv6/raw.c:207 (discriminator 2))
[  837.839416][    C1]  ? ipv6_raw_deliver (./include/linux/rcupdate.h:882 net/ipv6/raw.c:207)
[  837.839422][    C1]  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:479)
[  837.839431][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  837.839435][    C1]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[  837.839439][    C1]  ip6_input (net/ipv6/ip6_input.c:534 ./include/linux/netfilter.h:429 net/ipv6/ip6_input.c:545)
[  837.839442][    C1]  __netif_receive_skb_one_core (net/core/dev.c:6264)
[  837.839444][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[  837.839447][    C1]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[  837.839453][    C1]  ? __netif_receive_skb_list_core (net/core/dev.c:6310)
[  837.839457][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  837.839462][    C1]  process_backlog (net/core/dev.c:6728)
[  837.839471][    C1]  __napi_poll (net/core/dev.c:7787)
[  837.839478][    C1]  net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007)
[  837.839482][    C1]  ? __napi_poll (./include/net/gro.h:507)
[  837.839485][    C1]  ? __print_lock_name (kernel/locking/lockdep.c:735)
[  837.839491][    C1]  ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:304 kernel/time/timekeeping.c:482 kernel/time/timekeeping.c:2859)
[  837.839495][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[  837.839499][    C1]  handle_softirqs (kernel/softirq.c:645)
[  837.839504][    C1]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[  837.839507][    C1]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[  837.839509][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  837.839513][    C1]  do_softirq (kernel/softirq.c:546 (discriminator 19) kernel/softirq.c:533 (discriminator 19))
[  837.839520][    C1]  </IRQ>
[  837.839521][    C1]  <TASK>
[  837.839522][    C1]  ? __dev_queue_xmit (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:920 (discriminator 2) net/core/dev.c:4961 (discriminator 2))
[  837.839528][    C1]  __local_bh_enable_ip (kernel/softirq.c:473)
[  837.839532][    C1]  __dev_queue_xmit (./include/linux/bottom_half.h:33 (discriminator 2) ./include/linux/rcupdate.h:923 (discriminator 2) net/core/dev.c:4961 (discriminator 2))
[  837.839541][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[  837.839545][    C1]  ? netdev_core_pick_tx (net/core/dev.c:4784)
[  837.839547][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5123)
[  837.839550][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[  837.839552][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  837.839555][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  837.839557][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[  837.839560][    C1]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[  837.839563][    C1]  ? neigh_hh_output (./include/net/neighbour.h:525)
[  837.839568][    C1]  ip6_finish_output (net/ipv6/ip6_output.c:210 net/ipv6/ip6_output.c:221)
[  837.839576][    C1]  ip6_output (./include/linux/netfilter.h:421 net/ipv6/ip6_output.c:248)
[  837.839582][    C1]  ip6_xmit (./include/net/dst.h:470 (discriminator 4) ./include/linux/netfilter.h:429 (discriminator 4) net/ipv6/ip6_output.c:381 (discriminator 4))
[  837.839590][    C1]  ? ip6_autoflowlabel (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[  837.839596][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[  837.839600][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[  837.839603][    C1]  ? inet6_csk_xmit (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) net/ipv6/inet6_connection_sock.c:120 (discriminator 2))
[  837.839606][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  837.839608][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  837.839612][    C1]  inet6_csk_xmit (net/ipv6/inet6_connection_sock.c:123 (discriminator 13))
[  837.839616][    C1]  __tcp_transmit_skb (net/ipv4/tcp_output.c:1716)
[  837.839627][    C1]  ? __tcp_select_window (./arch/x86/include/asm/atomic.h:23)
[  837.839633][    C1]  ? tcp_mtu_probe (./include/net/net_namespace.h:422 (discriminator 1) ./include/net/sock.h:713 (discriminator 1) net/ipv4/tcp_output.c:2697 (discriminator 1))
[  837.839640][    C1]  tcp_write_xmit (net/ipv4/tcp_output.c:1734 net/ipv4/tcp_output.c:3070)
[  837.839649][    C1]  ? tcp_current_mss (net/ipv4/tcp_output.c:2120)
[  837.839652][    C1]  ? tcp_retrans_try_collapse (./arch/x86/include/asm/atomic.h:23)
[  837.839656][    C1]  ? tcp_set_state (net/ipv4/tcp.c:3028)
[  837.839661][    C1]  __tcp_push_pending_frames (net/ipv4/tcp_output.c:3253 (discriminator 1))
[  837.839664][    C1]  __tcp_close (net/ipv4/tcp.c:3220)
[  837.839668][    C1]  tcp_close (net/ipv4/tcp.c:3311)
[  837.839671][    C1]  inet_release (net/ipv4/af_inet.c:442)
[  837.839674][    C1]  ? fcntl_setlk (fs/locks.c:2552)
[  837.839683][    C1]  __sock_release (net/socket.c:735)
[  837.839690][    C1]  sock_close (net/socket.c:1526 (discriminator 1))
[  837.839694][    C1]  __fput (fs/file_table.c:512)
[  837.839704][    C1]  fput_close_sync (fs/file_table.c:617)
[  837.839707][    C1]  ? alloc_file_clone (fs/file_table.c:479)
[  837.839710][    C1]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[  837.839714][    C1]  __x64_sys_close (fs/open.c:1560 fs/open.c:1545 fs/open.c:1545)
[  837.839716][    C1]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[  837.839719][    C1]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[  837.839723][    C1]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  837.839727][    C1] RIP: 0033:0x7f18a6610312
[  837.839731][    C1] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[  837.839737][    C1] RSP: 002b:00007ffd57ca0298 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  837.839742][    C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18a6610312
[  837.839747][    C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
[  837.839749][    C1] RBP: 00007ffd57ca02c0 R08: 0000000000000000 R09: 0000000000000000
[  837.839751][    C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000055826a385010


Finger prints:
print_report:kasan_report:kasan_check_range:tcp_v6_rcv:ip6_protocol_deliver_rcu