================================================================== BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_disable_cb write to 0xffff888101ec4578 of 2 bytes by interrupt on cpu 1: virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:874 [inline] virtqueue_disable_cb+0x85/0x180 drivers/virtio/virtio_ring.c:2566 skb_xmit_done+0x5f/0x140 drivers/net/virtio_net.c:777 vring_interrupt+0x161/0x190 drivers/virtio/virtio_ring.c:2715 __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+0x7c/0x90 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline] cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:433 [inline] __pv_queued_spin_lock_slowpath+0x309/0x7a0 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline] _raw_spin_lock_bh+0x4a/0x50 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x3a/0x140 net/core/sock.c:3625 lock_sock include/net/sock.h:1617 [inline] tcp_sendmsg+0x22/0x50 net/ipv4/tcp.c:1357 inet_sendmsg+0x77/0xd0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x102/0x180 net/socket.c:726 sock_write_iter+0x15e/0x1a0 net/socket.c:1147 new_sync_write fs/read_write.c:586 [inline] vfs_write+0x77f/0x920 fs/read_write.c:679 ksys_write+0xe8/0x1b0 fs/read_write.c:731 __do_sys_write fs/read_write.c:742 [inline] __se_sys_write fs/read_write.c:739 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:739 x64_sys_call+0x287e/0x2dc0 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 read to 0xffff888101ec4578 of 2 bytes by interrupt on cpu 0: virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:873 [inline] virtqueue_disable_cb+0x63/0x180 drivers/virtio/virtio_ring.c:2566 start_xmit+0x15c/0x1310 drivers/net/virtio_net.c:3259 __netdev_start_xmit include/linux/netdevice.h:5002 [inline] netdev_start_xmit include/linux/netdevice.h:5011 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x119/0x3f0 net/core/dev.c:3606 sch_direct_xmit+0x1a9/0x580 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3827 [inline] __dev_queue_xmit+0xf6a/0x2090 net/core/dev.c:4400 dev_queue_xmit include/linux/netdevice.h:3168 [inline] neigh_hh_output include/net/neighbour.h:523 [inline] neigh_output include/net/neighbour.h:537 [inline] ip_finish_output2+0x721/0x890 net/ipv4/ip_output.c:236 ip_finish_output+0x11a/0x2a0 net/ipv4/ip_output.c:324 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_output+0xab/0x170 net/ipv4/ip_output.c:434 dst_output include/net/dst.h:450 [inline] ip_local_out net/ipv4/ip_output.c:130 [inline] __ip_queue_xmit+0xbf2/0xc10 net/ipv4/ip_output.c:536 ip_queue_xmit+0x38/0x50 net/ipv4/ip_output.c:550 __tcp_transmit_skb+0x15ca/0x1980 net/ipv4/tcp_output.c:1468 tcp_transmit_skb net/ipv4/tcp_output.c:1486 [inline] tcp_write_xmit+0x1410/0x3220 net/ipv4/tcp_output.c:2829 __tcp_push_pending_frames+0x6a/0x1a0 net/ipv4/tcp_output.c:3012 tcp_push_pending_frames include/net/tcp.h:2107 [inline] tcp_data_snd_check net/ipv4/tcp_input.c:5741 [inline] tcp_rcv_established+0x9c5/0xec0 net/ipv4/tcp_input.c:6175 tcp_v4_do_rcv+0x662/0x740 net/ipv4/tcp_ipv4.c:1916 tcp_v4_rcv+0x1b25/0x1ee0 net/ipv4/tcp_ipv4.c:2351 ip_protocol_deliver_rcu+0x370/0x720 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x17d/0x210 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] ip_local_deliver+0xec/0x1d0 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:578 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline] ip_sublist_rcv+0x55a/0x640 net/ipv4/ip_input.c:636 ip_list_rcv+0x25e/0x290 net/ipv4/ip_input.c:670 __netif_receive_skb_list_ptype net/core/dev.c:5715 [inline] __netif_receive_skb_list_core+0x4f0/0x520 net/core/dev.c:5762 __netif_receive_skb_list net/core/dev.c:5814 [inline] netif_receive_skb_list_internal+0x4e4/0x660 net/core/dev.c:5905 gro_normal_list include/net/gro.h:515 [inline] napi_complete_done+0x1b4/0x440 net/core/dev.c:6256 virtqueue_napi_complete drivers/net/virtio_net.c:759 [inline] virtnet_poll+0x1cb3/0x2100 drivers/net/virtio_net.c:3014 __napi_poll+0x63/0x3c0 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7074 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 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 value changed: 0x0000 -> 0x0001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.13.0-rc3-syzkaller-00017-gf44d154d6e3d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 ==================================================================