================================================================== BUG: KCSAN: data-race in virtqueue_disable_cb / vring_interrupt write to 0xffff888102213452 of 1 bytes by interrupt on cpu 0: vring_interrupt+0x12b/0x180 drivers/virtio/virtio_ring.c:2591 __handle_irq_event_percpu+0x95/0x490 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x64/0xf0 kernel/irq/handle.c:210 handle_edge_irq+0x16d/0x5b0 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0x58/0xe0 arch/x86/kernel/irq.c:285 common_interrupt+0x3e/0x90 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 preempt_count arch/x86/include/asm/preempt.h:26 [inline] get_ctx kernel/kcsan/core.c:206 [inline] check_access kernel/kcsan/core.c:750 [inline] __tsan_read4+0xba/0x180 kernel/kcsan/core.c:1024 fib6_check_expired include/net/ip6_fib.h:270 [inline] __find_rr_leaf+0xbc/0x4c0 net/ipv6/route.c:806 find_rr_leaf net/ipv6/route.c:853 [inline] rt6_select net/ipv6/route.c:897 [inline] fib6_table_lookup+0x1ed/0x650 net/ipv6/route.c:2195 ip6_pol_route+0xb9/0xb90 net/ipv6/route.c:2231 ip6_pol_route_input+0x40/0x50 net/ipv6/route.c:2288 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x364/0x4e0 net/ipv6/fib6_rules.c:116 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x41e/0x4f0 net/ipv6/route.c:2596 ip6_rcv_finish_core net/ipv6/ip6_input.c:66 [inline] ip6_rcv_finish+0x1c0/0x330 net/ipv6/ip6_input.c:77 ip_sabotage_in+0x139/0x150 net/bridge/br_netfilter_hooks.c:1008 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0x86/0x1b0 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK include/linux/netfilter.h:312 [inline] ipv6_rcv+0x113/0x150 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5661 [inline] __netif_receive_skb+0xa2/0x280 net/core/dev.c:5775 netif_receive_skb_internal net/core/dev.c:5861 [inline] netif_receive_skb+0x4a/0x320 net/core/dev.c:5921 br_netif_receive_skb net/bridge/br_input.c:30 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] br_pass_frame_up+0x239/0x310 net/bridge/br_input.c:70 br_handle_frame_finish+0xd28/0xe70 br_nf_hook_thresh+0x1e5/0x220 br_nf_pre_routing_finish_ipv6+0x575/0x5a0 NF_HOOK include/linux/netfilter.h:314 [inline] br_nf_pre_routing_ipv6+0x1f6/0x2a0 net/bridge/br_netfilter_ipv6.c:184 br_nf_pre_routing+0x517/0xbc0 net/bridge/br_netfilter_hooks.c:531 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_bridge_pre net/bridge/br_input.c:277 [inline] br_handle_frame+0x4dd/0x9a0 net/bridge/br_input.c:424 __netif_receive_skb_core+0xb00/0x2310 net/core/dev.c:5555 __netif_receive_skb_one_core net/core/dev.c:5659 [inline] __netif_receive_skb+0x5a/0x280 net/core/dev.c:5775 process_backlog+0x22e/0x440 net/core/dev.c:6108 __napi_poll+0x63/0x3c0 net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:6963 handle_softirqs+0xc3/0x280 kernel/softirq.c:554 do_softirq+0x5e/0x90 kernel/softirq.c:455 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_decrypt_worker+0x6ac/0x6f0 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312 worker_thread+0x526/0x700 kernel/workqueue.c:3390 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read to 0xffff888102213452 of 1 bytes by task 3249 on cpu 1: virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:892 [inline] virtqueue_disable_cb+0x92/0x180 drivers/virtio/virtio_ring.c:2446 start_xmit+0x14b/0x1260 drivers/net/virtio_net.c:3034 __netdev_start_xmit include/linux/netdevice.h:4913 [inline] netdev_start_xmit include/linux/netdevice.h:4922 [inline] xmit_one net/core/dev.c:3580 [inline] dev_hard_start_xmit+0x119/0x3f0 net/core/dev.c:3596 sch_direct_xmit+0x1b0/0x580 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3809 [inline] __dev_queue_xmit+0xf3d/0x1fe0 net/core/dev.c:4389 dev_queue_xmit include/linux/netdevice.h:3105 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0x73d/0x8b0 net/ipv4/ip_output.c:235 ip_finish_output+0x11a/0x2a0 net/ipv4/ip_output.c:323 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_output+0xab/0x170 net/ipv4/ip_output.c:433 dst_output include/net/dst.h:450 [inline] ip_local_out net/ipv4/ip_output.c:129 [inline] __ip_queue_xmit+0xbcc/0xbf0 net/ipv4/ip_output.c:535 ip_queue_xmit+0x38/0x50 net/ipv4/ip_output.c:549 __tcp_transmit_skb+0x15b0/0x1970 net/ipv4/tcp_output.c:1466 tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline] tcp_write_xmit+0x1273/0x31c0 net/ipv4/tcp_output.c:2829 __tcp_push_pending_frames+0x6a/0x1a0 net/ipv4/tcp_output.c:3014 tcp_push+0x320/0x340 net/ipv4/tcp.c:747 tcp_sendmsg_locked+0x2127/0x2640 net/ipv4/tcp.c:1322 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1354 inet_sendmsg+0x77/0xd0 net/ipv4/af_inet.c:853 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x102/0x180 net/socket.c:745 sock_write_iter+0x164/0x1b0 net/socket.c:1160 new_sync_write fs/read_write.c:497 [inline] vfs_write+0x78f/0x900 fs/read_write.c:590 ksys_write+0xeb/0x1b0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:652 x64_sys_call+0x2a40/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3249 Comm: syz-executor Not tainted 6.11.0-rc1-syzkaller-00154-gc0ecd6388360 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 ==================================================================