================================================================== BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_disable_cb read to 0xffff888102a2f478 of 2 bytes by interrupt on cpu 1: virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:885 [inline] virtqueue_disable_cb+0x63/0x180 drivers/virtio/virtio_ring.c:2446 skb_xmit_done+0x5f/0x140 drivers/net/virtio_net.c:673 vring_interrupt+0x157/0x180 drivers/virtio/virtio_ring.c:2595 __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 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:94 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x3d/0x60 kernel/locking/spinlock.c:194 __mod_timer+0x604/0x7f0 kernel/time/timer.c:1186 schedule_timeout+0xc5/0x2c0 kernel/time/timer.c:2580 rcu_gp_fqs_loop+0x29f/0xbd0 kernel/rcu/tree.c:2000 rcu_gp_kthread+0x28/0x250 kernel/rcu/tree.c:2202 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 write to 0xffff888102a2f478 of 2 bytes by task 3252 on cpu 0: virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:886 [inline] virtqueue_disable_cb+0x85/0x180 drivers/virtio/virtio_ring.c:2446 start_xmit+0x125/0xb70 drivers/net/virtio_net.c:2568 __netdev_start_xmit include/linux/netdevice.h:4882 [inline] netdev_start_xmit include/linux/netdevice.h:4896 [inline] xmit_one net/core/dev.c:3578 [inline] dev_hard_start_xmit+0x119/0x3f0 net/core/dev.c:3594 sch_direct_xmit+0x1b0/0x580 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3807 [inline] __dev_queue_xmit+0xee7/0x1e50 net/core/dev.c:4359 dev_queue_xmit include/linux/netdevice.h:3095 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0x73b/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+0xbca/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:744 tcp_sendmsg_locked+0x2127/0x2640 net/ipv4/tcp.c:1319 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1351 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+0x27ef/0x2d70 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: 0x0000 -> 0x0001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3252 Comm: syz-fuzzer Not tainted 6.10.0-rc4-syzkaller-00045-g92e5605a199e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 ==================================================================