Bluetooth: hci1: command 0x041b tx timeout
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BUG: KCSAN: data-race in dst_cache_set_ip6 / fib6_clean_node

write to 0xffff88811fb5f3ac of 4 bytes by task 3944 on cpu 0:
 fib6_clean_node+0xc0/0x260 net/ipv6/ip6_fib.c:2167
 fib6_walk_continue+0x38e/0x430 net/ipv6/ip6_fib.c:2101
 fib6_walk net/ipv6/ip6_fib.c:2149 [inline]
 fib6_clean_tree net/ipv6/ip6_fib.c:2229 [inline]
 __fib6_clean_all+0x188/0x2b0 net/ipv6/ip6_fib.c:2245
 fib6_flush_trees+0x6c/0x80 net/ipv6/ip6_fib.c:2270
 rt_genid_bump_ipv6 include/net/net_namespace.h:458 [inline]
 addrconf_dad_completed+0x57f/0x860 net/ipv6/addrconf.c:4180
 addrconf_dad_work+0x8de/0x1150 net/ipv6/addrconf.c:3933
 process_one_work+0x3e1/0x9a0 kernel/workqueue.c:2269
 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415
 kthread+0x20d/0x230 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

read to 0xffff88811fb5f3ac of 4 bytes by task 49 on cpu 1:
 fib6_get_cookie_safe include/net/ip6_fib.h:282 [inline]
 rt6_get_cookie include/net/ip6_fib.h:303 [inline]
 dst_cache_set_ip6+0xd3/0x1e0 net/core/dst_cache.c:115
 send6+0x255/0x3a0 drivers/net/wireguard/socket.c:148
 wg_socket_send_skb_to_peer+0xbb/0x130 drivers/net/wireguard/socket.c:177
 wg_packet_create_data_done drivers/net/wireguard/send.c:252 [inline]
 wg_packet_tx_worker+0x1e2/0x4c0 drivers/net/wireguard/send.c:280
 process_one_work+0x3e1/0x9a0 kernel/workqueue.c:2269
 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415
 kthread+0x20d/0x230 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 49 Comm: kworker/1:1 Not tainted 5.8.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
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