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BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_disable_cb

write to 0xffff88810199bf78 of 2 bytes by interrupt on cpu 1:
 virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:874 [inline]
 virtqueue_disable_cb+0x7a/0x150 drivers/virtio/virtio_ring.c:2570
 skb_xmit_done+0x65/0x140 drivers/net/virtio_net.c:784
 vring_interrupt+0x155/0x180 drivers/virtio/virtio_ring.c:2719
 __handle_irq_event_percpu+0x9a/0x540 kernel/irq/handle.c:203
 handle_irq_event_percpu kernel/irq/handle.c:240 [inline]
 handle_irq_event+0x64/0xf0 kernel/irq/handle.c:257
 handle_edge_irq+0x154/0x470 kernel/irq/chip.c:855
 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
 handle_irq arch/x86/kernel/irq.c:254 [inline]
 call_irq_handler arch/x86/kernel/irq.c:-1 [inline]
 __common_interrupt+0x60/0xb0 arch/x86/kernel/irq.c:325
 common_interrupt+0x7e/0x90 arch/x86/kernel/irq.c:318
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
 __sanitizer_cov_trace_switch+0x82/0x130 kernel/kcov.c:-1
 alloc_pages_mpol+0xd2/0x260 mm/mempolicy.c:2419
 folio_alloc_mpol_noprof mm/mempolicy.c:2435 [inline]
 vma_alloc_folio_noprof+0x1aa/0x300 mm/mempolicy.c:2470
 folio_prealloc mm/memory.c:-1 [inline]
 do_cow_fault mm/memory.c:5722 [inline]
 do_fault mm/memory.c:5834 [inline]
 do_pte_missing mm/memory.c:4361 [inline]
 handle_pte_fault mm/memory.c:6177 [inline]
 __handle_mm_fault mm/memory.c:6318 [inline]
 handle_mm_fault+0xbfe/0x2be0 mm/memory.c:6487
 do_user_addr_fault+0x630/0x1080 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x62/0xa0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

read to 0xffff88810199bf78 of 2 bytes by task 3287 on cpu 0:
 virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:873 [inline]
 virtqueue_disable_cb+0x58/0x150 drivers/virtio/virtio_ring.c:2570
 start_xmit+0x103/0x17a0 drivers/net/virtio_net.c:3361
 __netdev_start_xmit include/linux/netdevice.h:5248 [inline]
 netdev_start_xmit include/linux/netdevice.h:5257 [inline]
 xmit_one net/core/dev.c:3845 [inline]
 dev_hard_start_xmit+0x122/0x3e0 net/core/dev.c:3861
 sch_direct_xmit+0x192/0x550 net/sched/sch_generic.c:344
 __dev_xmit_skb net/core/dev.c:4152 [inline]
 __dev_queue_xmit+0xe9a/0x2000 net/core/dev.c:4729
 dev_queue_xmit include/linux/netdevice.h:3365 [inline]
 neigh_hh_output include/net/neighbour.h:531 [inline]
 neigh_output include/net/neighbour.h:545 [inline]
 ip_finish_output2+0x77f/0x8b0 net/ipv4/ip_output.c:237
 __ip_finish_output net/ipv4/ip_output.c:-1 [inline]
 ip_finish_output+0x114/0x2a0 net/ipv4/ip_output.c:325
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip_output+0xbd/0x190 net/ipv4/ip_output.c:438
 dst_output include/net/dst.h:464 [inline]
 ip_local_out net/ipv4/ip_output.c:131 [inline]
 __ip_queue_xmit+0xbbf/0xc00 net/ipv4/ip_output.c:534
 ip_queue_xmit+0x39/0x50 net/ipv4/ip_output.c:548
 __tcp_transmit_skb+0x17fd/0x1c10 net/ipv4/tcp_output.c:1628
 __tcp_send_ack+0x227/0x350 net/ipv4/tcp_output.c:4445
 tcp_send_ack+0x29/0x30 net/ipv4/tcp_output.c:4451
 __tcp_cleanup_rbuf+0xd3/0x2c0 net/ipv4/tcp.c:1561
 tcp_cleanup_rbuf net/ipv4/tcp.c:1572 [inline]
 tcp_recvmsg_locked+0x1adb/0x1fe0 net/ipv4/tcp.c:2895
 tcp_recvmsg+0x128/0x480 net/ipv4/tcp.c:2925
 inet_recvmsg+0xb7/0x290 net/ipv4/af_inet.c:885
 sock_recvmsg_nosec net/socket.c:1078 [inline]
 sock_recvmsg+0xf6/0x170 net/socket.c:1100
 sock_read_iter+0x152/0x1a0 net/socket.c:1170
 new_sync_read fs/read_write.c:491 [inline]
 vfs_read+0x64c/0x770 fs/read_write.c:572
 ksys_read+0xda/0x1a0 fs/read_write.c:715
 __do_sys_read fs/read_write.c:724 [inline]
 __se_sys_read fs/read_write.c:722 [inline]
 __x64_sys_read+0x40/0x50 fs/read_write.c:722
 x64_sys_call+0x27c0/0x3000 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000 -> 0x0001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 3287 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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