================================================================== BUG: KCSAN: data-race in br_handle_frame_finish / br_handle_frame_finish read-write to 0xffff888139f2c170 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:5376 __netif_receive_skb_one_core net/core/dev.c:5480 [inline] __netif_receive_skb+0x57/0x1b0 net/core/dev.c:5596 process_backlog+0x21f/0x380 net/core/dev.c:5924 __napi_poll+0x60/0x3b0 net/core/dev.c:6485 napi_poll net/core/dev.c:6552 [inline] net_rx_action+0x328/0x6c0 net/core/dev.c:6663 __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 0xffff888139f2c170 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:5376 __netif_receive_skb_one_core net/core/dev.c:5480 [inline] __netif_receive_skb+0x57/0x1b0 net/core/dev.c:5596 process_backlog+0x21f/0x380 net/core/dev.c:5924 __napi_poll+0x60/0x3b0 net/core/dev.c:6485 napi_poll net/core/dev.c:6552 [inline] net_rx_action+0x328/0x6c0 net/core/dev.c:6663 __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: 0x00000000000a733a -> 0x00000000000a733b Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12 Comm: ksoftirqd/0 Tainted: G W 6.2.0-rc8-syzkaller-00002-gb408817d4884-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 ================================================================== net_ratelimit: 14121 callbacks suppressed bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) net_ratelimit: 20348 callbacks suppressed bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bond0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)