======================================
| xx__-> [  266.365538][    C1] ==================================================================
| [  266.365868][    C1] BUG: KASAN: slab-out-of-bounds in tcp_v6_send_response (./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)
| [  266.366114][    C1] Read of size 8 at addr ff1100000d293108 by task bench-lookups_i/2182
| [  266.366358][    C1]
[  266.366443][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  266.366445][    C1] Call Trace:
[  266.366447][    C1]  <IRQ>
[  266.366448][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  266.366454][    C1]  print_address_description.constprop.0 (mm/kasan/report.c:378)
[  266.366459][    C1]  print_report (mm/kasan/report.c:482)
[  266.366460][    C1]  ? __virt_addr_valid (./include/linux/rcupdate.h:948 ./include/linux/mmzone.h:2276 arch/x86/mm/physaddr.c:54)
[  266.366464][    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))
[  266.366466][    C1]  kasan_report (mm/kasan/report.c:595)
[  266.366470][    C1]  ? tcp_v6_send_response (./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)
[  266.366471][    C1]  ? tcp_v6_send_response (./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)
[  266.366474][    C1]  kasan_check_range (mm/kasan/generic.c:186 mm/kasan/generic.c:200)
[  266.366476][    C1]  tcp_v6_send_response (./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)
[  266.366477][    C1]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[  266.366481][    C1]  ? tcp_v6_send_synack (./include/net/inet_sock.h:338 (discriminator 1))
[  266.366482][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[  266.366486][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  266.366488][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  266.366492][    C1]  tcp_v6_timewait_ack (net/ipv6/tcp_ipv6.c:1149 net/ipv6/tcp_ipv6.c:1201)
[  266.366494][    C1]  ? tcp_v6_reqsk_send_ack (net/ipv6/tcp_ipv6.c:1245 (discriminator 7))
[  266.366496][    C1]  ? __local_bh_enable_ip (kernel/softirq.c:478)
[  266.366499][    C1]  ? tcp_ecn_openreq_child (./include/net/tcp_ecn.h:139 (discriminator 4))
[  266.366502][    C1]  ? ip6_pol_route (./include/linux/rcupdate.h:882 net/ipv6/route.c:2339)
[  266.366505][    C1]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[  266.366507][    C1]  tcp_v6_rcv (net/ipv6/tcp_ipv6.c:1993)
[  266.366510][    C1]  ? tcp_v6_syn_recv_sock (./include/net/sock.h:1128 (discriminator 2))
[  266.366512][    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))
[  266.366514][    C1]  ? ipv6_raw_deliver (./include/linux/rcupdate.h:882 net/ipv6/raw.c:207)
[  266.366517][    C1]  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:479)
[  266.366521][    C1]  ip6_input_finish (net/ipv6/ip6_input.c:534)
[  266.366523][    C1]  ip6_input (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv6/ip6_input.c:545)
[  266.366525][    C1]  ? ip6_input_finish (net/ipv6/ip6_input.c:527 (discriminator 46))
[  266.366527][    C1]  ? ip6_rcv_core (./include/linux/skbuff.h:3432 net/ipv6/ip6_input.c:332)
[  266.366529][    C1]  ipv6_rcv (./include/net/dst.h:480 (discriminator 4) net/ipv6/ip6_input.c:119 (discriminator 4) ./include/linux/netfilter.h:325 (discriminator 4) ./include/linux/netfilter.h:319 (discriminator 4) net/ipv6/ip6_input.c:351 (discriminator 4))
[  266.366531][    C1]  ? ip6_rcv_core (net/ipv6/ip6_input.c:211 (discriminator 96))
[  266.366533][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  266.366534][    C1]  ? __update_load_avg_cfs_rq (kernel/sched/pelt.c:329)
[  266.366537][    C1]  ? mark_usage (kernel/locking/lockdep.c:4690)
[  266.366539][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[  266.366540][    C1]  ? trace_raw_output_rcu_invoke_kfree_bulk_callback (./include/trace/events/rcu.h:655)
[  266.366543][    C1]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[  266.366547][    C1]  __netif_receive_skb_one_core (net/core/dev.c:6264)
[  266.366549][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[  266.366550][    C1]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[  266.366552][    C1]  ? __netif_receive_skb_list_core (net/core/dev.c:6310)
[  266.366554][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  266.366557][    C1]  process_backlog (net/core/dev.c:6728)
[  266.366560][    C1]  __napi_poll (net/core/dev.c:7787)
[  266.366562][    C1]  net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007)
[  266.366564][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[  266.366565][    C1]  ? __napi_poll (./include/net/gro.h:507)
[  266.366569][    C1]  ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:304 kernel/time/timekeeping.c:482 kernel/time/timekeeping.c:2859)
[  266.366572][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[  266.366574][    C1]  handle_softirqs (kernel/softirq.c:645)
[  266.366576][    C1]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[  266.366578][    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)
[  266.366580][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  266.366581][    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))
[  266.366583][    C1]  do_softirq (kernel/softirq.c:546 (discriminator 19) kernel/softirq.c:533 (discriminator 19))
[  266.366585][    C1]  </IRQ>
[  266.366585][    C1]  <TASK>
[  266.366586][    C1]  __local_bh_enable_ip (kernel/softirq.c:473)
[  266.366588][    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))
[  266.366590][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  266.366591][    C1]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[  266.366594][    C1]  ? netdev_core_pick_tx (net/core/dev.c:4784)
[  266.366596][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[  266.366597][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[  266.366599][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  266.366600][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  266.366602][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[  266.366603][    C1]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[  266.366605][    C1]  ? neigh_hh_output (./include/net/neighbour.h:525)
[  266.366607][    C1]  ip6_finish_output2 (./include/net/neighbour.h:558 net/ipv6/ip6_output.c:138)
[  266.366610][    C1]  ? ip6_dst_lookup (net/ipv6/ip6_output.c:1297)
[  266.366611][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[  266.366613][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  266.366614][    C1]  ? ip6_mtu (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/ip6_route.h:384 (discriminator 2) net/ipv6/route.c:3290 (discriminator 2))
[  266.366617][    C1]  ip6_finish_output (net/ipv6/ip6_output.c:210 net/ipv6/ip6_output.c:221)
[  266.366619][    C1]  ip6_output (./include/linux/netfilter.h:314 net/ipv6/ip6_output.c:248)
[  266.366621][    C1]  ? ip6_finish_output (./include/net/inet_sock.h:338 (discriminator 1))
[  266.366622][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[  266.366624][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[  266.366625][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  266.366627][    C1]  ip6_xmit (./include/net/dst.h:470 (discriminator 4) ./include/linux/netfilter.h:325 (discriminator 4) ./include/linux/netfilter.h:319 (discriminator 4) net/ipv6/ip6_output.c:381 (discriminator 4))
[  266.366629][    C1]  ? mark_usage (kernel/locking/lockdep.c:4690)
[  266.366630][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[  266.366633][    C1]  ? ip6_autoflowlabel (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[  266.366634][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  266.366636][    C1]  ? mark_usage (kernel/locking/lockdep.c:4690)
[  266.366637][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[  266.366639][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[  266.366641][    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))
[  266.366643][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  266.366644][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  266.366646][    C1]  inet6_csk_xmit (net/ipv6/inet6_connection_sock.c:123 (discriminator 13))
[  266.366649][    C1]  __tcp_transmit_skb (net/ipv4/tcp_output.c:1716)
[  266.366652][    C1]  ? __tcp_select_window (./arch/x86/include/asm/atomic.h:23)
[  266.366653][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[  266.366654][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[  266.366656][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  266.366657][    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))
[  266.366660][    C1]  tcp_write_xmit (net/ipv4/tcp_output.c:1734 net/ipv4/tcp_output.c:3070)
[  266.366663][    C1]  ? __alloc_skb (./include/linux/instrumented.h:97 ./include/linux/atomic/atomic-instrumented.h:67 ./include/linux/refcount.h:134 net/core/skbuff.c:737)
[  266.366666][    C1]  ? tcp_retrans_try_collapse (./arch/x86/include/asm/atomic.h:23)
[  266.366667][    C1]  ? tcp_set_state (net/ipv4/tcp.c:3028)
[  266.366671][    C1]  __tcp_push_pending_frames (net/ipv4/tcp_output.c:3253 (discriminator 1))
[  266.366673][    C1]  __tcp_close (net/ipv4/tcp.c:3220)
[  266.366675][    C1]  tcp_close (net/ipv4/tcp.c:3311)
[  266.366677][    C1]  inet_release (net/ipv4/af_inet.c:442)
[  266.366679][    C1]  ? fcntl_setlk (fs/locks.c:2552)
[  266.366682][    C1]  __sock_release (net/socket.c:735)
[  266.366685][    C1]  sock_close (net/socket.c:1526 (discriminator 1))
[  266.366687][    C1]  __fput (fs/file_table.c:512)
[  266.366690][    C1]  fput_close_sync (fs/file_table.c:617)
[  266.366691][    C1]  ? alloc_file_clone (fs/file_table.c:479)
[  266.366693][    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)
[  266.366695][    C1]  __x64_sys_close (fs/open.c:1560 fs/open.c:1545 fs/open.c:1545)
[  266.366697][    C1]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[  266.366700][    C1]  ? irq_exit_rcu (kernel/softirq.c:786)
[  266.366701][    C1]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  266.366704][    C1] RIP: 0033:0x7f5aff5fc312
[  266.366707][    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)
[  266.366709][    C1] RSP: 002b:00007ffe76820bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  266.366712][    C1] RAX: ffffffffffffffda RBX: 000000000000004a RCX: 00007f5aff5fc312
[  266.366714][    C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000b
[  266.366715][    C1] RBP: 00007ffe76820be0 R08: 0000000000000000 R09: 0000000000000000
[  266.366715][    C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000000002ecc4210


Finger prints:
print_report:kasan_report:kasan_check_range:tcp_v6_send_response:tcp_v6_timewait_ack