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================================================================== BUG: KCSAN: data-race in br_handle_frame_finish / br_handle_frame_finish write to 0xffff888010a6b168 of 8 bytes by interrupt on cpu 1: br_handle_frame_finish+0x985/0xa60 net/bridge/br_input.c:142 br_nf_hook_thresh+0x184/0x1c0 net/bridge/br_netfilter_hooks.c:1024 br_nf_pre_routing_finish_ipv6+0x4ab/0x4c0 net/bridge/br_netfilter_ipv6.c:187 NF_HOOK include/linux/netfilter.h:301 [inline] br_nf_pre_routing_ipv6+0x1ed/0x280 net/bridge/br_netfilter_ipv6.c:236 br_nf_pre_routing+0x4d6/0xb40 net/bridge/br_netfilter_hooks.c:505 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_bridge_pre net/bridge/br_input.c:224 [inline] br_handle_frame+0x483/0xbb0 net/bridge/br_input.c:367 __netif_receive_skb_core+0xa29/0x1e10 net/core/dev.c:5260 __netif_receive_skb_one_core net/core/dev.c:5363 [inline] __netif_receive_skb+0x52/0x1b0 net/core/dev.c:5479 process_backlog+0x23f/0x3e0 net/core/dev.c:6346 __napi_poll+0x77/0x510 net/core/dev.c:6892 napi_poll net/core/dev.c:6959 [inline] net_rx_action+0x29f/0x680 net/core/dev.c:7036 __do_softirq+0x13c/0x2c3 kernel/softirq.c:343 run_ksoftirqd+0x13/0x20 kernel/softirq.c:650 smpboot_thread_fn+0x34f/0x520 kernel/smpboot.c:165 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff888010a6b168 of 8 bytes by interrupt on cpu 0: br_handle_frame_finish+0x973/0xa60 net/bridge/br_input.c:142 br_nf_hook_thresh+0x184/0x1c0 net/bridge/br_netfilter_hooks.c:1024 br_nf_pre_routing_finish_ipv6+0x4ab/0x4c0 net/bridge/br_netfilter_ipv6.c:187 NF_HOOK include/linux/netfilter.h:301 [inline] br_nf_pre_routing_ipv6+0x1ed/0x280 net/bridge/br_netfilter_ipv6.c:236 br_nf_pre_routing+0x4d6/0xb40 net/bridge/br_netfilter_hooks.c:505 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_bridge_pre net/bridge/br_input.c:224 [inline] br_handle_frame+0x483/0xbb0 net/bridge/br_input.c:367 __netif_receive_skb_core+0xa29/0x1e10 net/core/dev.c:5260 __netif_receive_skb_one_core net/core/dev.c:5363 [inline] __netif_receive_skb+0x52/0x1b0 net/core/dev.c:5479 process_backlog+0x23f/0x3e0 net/core/dev.c:6346 __napi_poll+0x77/0x510 net/core/dev.c:6892 napi_poll net/core/dev.c:6959 [inline] net_rx_action+0x29f/0x680 net/core/dev.c:7036 __do_softirq+0x13c/0x2c3 kernel/softirq.c:343 run_ksoftirqd+0x13/0x20 kernel/softirq.c:650 smpboot_thread_fn+0x34f/0x520 kernel/smpboot.c:165 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/02/23 00:38 | upstream | 31caf8b2a847 | c26fb06b | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in br_handle_frame_finish / br_handle_frame_finish | |||
| 2021/01/22 04:53 | upstream | 83d09ad4b950 | d4f4eca5 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in br_handle_frame_finish / br_handle_frame_finish |