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BUG: KCSAN: data-race in br_handle_frame_finish / br_handle_frame_finish

read-write to 0xffff888126874178 of 8 bytes by interrupt on cpu 1:
 br_handle_frame_finish+0xd4f/0xee0 net/bridge/br_input.c:189
 br_nf_hook_thresh+0x1ed/0x220
 br_nf_pre_routing_finish_ipv6+0x511/0x540
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x1e3/0x2a0 net/bridge/br_netfilter_ipv6.c:237
 br_nf_pre_routing+0x526/0xba0 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:272 [inline]
 br_handle_frame+0x4ca/0x8e0 net/bridge/br_input.c:416
 __netif_receive_skb_core+0x9fb/0x1ec0 net/core/dev.c:5371
 __netif_receive_skb_one_core net/core/dev.c:5475 [inline]
 __netif_receive_skb+0x57/0x1b0 net/core/dev.c:5591
 process_backlog+0x21f/0x380 net/core/dev.c:5919
 __napi_poll+0x60/0x3b0 net/core/dev.c:6480
 napi_poll net/core/dev.c:6547 [inline]
 net_rx_action+0x322/0x6c0 net/core/dev.c:6657
 __do_softirq+0xe4/0x2b0 kernel/softirq.c:571
 run_ksoftirqd+0x23/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x2f8/0x490 kernel/smpboot.c:164
 kthread+0x1ac/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read-write to 0xffff888126874178 of 8 bytes by interrupt on cpu 0:
 br_handle_frame_finish+0xd4f/0xee0 net/bridge/br_input.c:189
 br_nf_hook_thresh+0x1ed/0x220
 br_nf_pre_routing_finish_ipv6+0x511/0x540
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x1e3/0x2a0 net/bridge/br_netfilter_ipv6.c:237
 br_nf_pre_routing+0x526/0xba0 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:272 [inline]
 br_handle_frame+0x4ca/0x8e0 net/bridge/br_input.c:416
 __netif_receive_skb_core+0x9fb/0x1ec0 net/core/dev.c:5371
 __netif_receive_skb_one_core net/core/dev.c:5475 [inline]
 __netif_receive_skb+0x57/0x1b0 net/core/dev.c:5591
 process_backlog+0x21f/0x380 net/core/dev.c:5919
 __napi_poll+0x60/0x3b0 net/core/dev.c:6480
 napi_poll net/core/dev.c:6547 [inline]
 net_rx_action+0x322/0x6c0 net/core/dev.c:6657
 __do_softirq+0xe4/0x2b0 kernel/softirq.c:571
 run_ksoftirqd+0x23/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x2f8/0x490 kernel/smpboot.c:164
 kthread+0x1ac/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x0000000000010777 -> 0x0000000000010778

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 6.2.0-syzkaller-05251-g5b7c4cabbb65-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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