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BUG: KCSAN: data-race in br_handle_frame_finish / br_handle_frame_finish

read-write to 0xffff888138776170 of 8 bytes by interrupt on cpu 1:
 br_handle_frame_finish+0xb14/0xbc0 net/bridge/br_input.c:172
 br_nf_hook_thresh+0x1ee/0x220
 br_nf_pre_routing_finish_ipv6+0x4fa/0x510
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x1ea/0x280 net/bridge/br_netfilter_ipv6.c:237
 br_nf_pre_routing+0x4c9/0xb20 net/bridge/br_netfilter_hooks.c:507
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
 br_handle_frame+0x483/0x7d0 net/bridge/br_input.c:399
 __netif_receive_skb_core+0xa4e/0x1ce0 net/core/dev.c:5383
 __netif_receive_skb_one_core net/core/dev.c:5487 [inline]
 __netif_receive_skb+0x52/0x1b0 net/core/dev.c:5603
 process_backlog+0x23f/0x3b0 net/core/dev.c:5931
 __napi_poll+0x65/0x390 net/core/dev.c:6498
 napi_poll net/core/dev.c:6565 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6676
 __do_softirq+0xf2/0x2c7 kernel/softirq.c:571
 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

read-write to 0xffff888138776170 of 8 bytes by interrupt on cpu 0:
 br_handle_frame_finish+0xb14/0xbc0 net/bridge/br_input.c:172
 br_nf_hook_thresh+0x1ee/0x220
 br_nf_pre_routing_finish_ipv6+0x4fa/0x510
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x1ea/0x280 net/bridge/br_netfilter_ipv6.c:237
 br_nf_pre_routing+0x4c9/0xb20 net/bridge/br_netfilter_hooks.c:507
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
 br_handle_frame+0x483/0x7d0 net/bridge/br_input.c:399
 __netif_receive_skb_core+0xa4e/0x1ce0 net/core/dev.c:5383
 __netif_receive_skb_one_core net/core/dev.c:5487 [inline]
 __netif_receive_skb+0x52/0x1b0 net/core/dev.c:5603
 process_backlog+0x23f/0x3b0 net/core/dev.c:5931
 __napi_poll+0x65/0x390 net/core/dev.c:6498
 napi_poll net/core/dev.c:6565 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6676
 __do_softirq+0xf2/0x2c7 kernel/softirq.c:571
 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

value changed: 0x000000000001fa1a -> 0x000000000001fa1b

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 12 Comm: ksoftirqd/0 Tainted: G        W          6.1.0-rc2-syzkaller-00351-g91562cf99364-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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