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BUG: KCSAN: data-race in virtqueue_disable_cb / vring_interrupt

write to 0xffff888102a60352 of 1 bytes by interrupt on cpu 0:
 vring_interrupt+0x128/0x170 drivers/virtio/virtio_ring.c:2591
 __handle_irq_event_percpu+0x91/0x490 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+0x167/0x590 kernel/irq/chip.c:831
 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline]
 handle_irq arch/x86/kernel/irq.c:238 [inline]
 __common_interrupt+0x54/0xe0 arch/x86/kernel/irq.c:257
 common_interrupt+0x7c/0x90 arch/x86/kernel/irq.c:247
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640
 kcsan_setup_watchpoint+0x3fe/0x410 kernel/kcsan/core.c:705
 __tlb_remove_page_size+0x47/0x1a0 mm/mmu_gather.c:134
 __tlb_remove_page include/asm-generic/tlb.h:471 [inline]
 zap_pte_range mm/memory.c:1482 [inline]
 zap_pmd_range mm/memory.c:1597 [inline]
 zap_pud_range mm/memory.c:1626 [inline]
 zap_p4d_range mm/memory.c:1647 [inline]
 unmap_page_range+0xef2/0x1e60 mm/memory.c:1668
 unmap_single_vma+0x142/0x1d0 mm/memory.c:1714
 unmap_vmas+0x18d/0x2b0 mm/memory.c:1758
 exit_mmap+0x1a2/0x6e0 mm/mmap.c:3279
 __mmput+0x28/0x1c0 kernel/fork.c:1343
 mmput+0x4c/0x60 kernel/fork.c:1365
 exit_mm+0xe3/0x180 kernel/exit.c:569
 do_exit+0x585/0x16d0 kernel/exit.c:858
 do_group_exit+0x141/0x150 kernel/exit.c:1020
 __do_sys_exit_group kernel/exit.c:1031 [inline]
 __se_sys_exit_group kernel/exit.c:1029 [inline]
 __x64_sys_exit_group+0x1f/0x20 kernel/exit.c:1029
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888102a60352 of 1 bytes by task 3087 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+0xf0/0xa90 drivers/net/virtio_net.c:2399
 __netdev_start_xmit include/linux/netdevice.h:4980 [inline]
 netdev_start_xmit include/linux/netdevice.h:4994 [inline]
 xmit_one net/core/dev.c:3547 [inline]
 dev_hard_start_xmit+0x115/0x3f0 net/core/dev.c:3563
 sch_direct_xmit+0x1b0/0x580 net/sched/sch_generic.c:342
 __dev_xmit_skb net/core/dev.c:3776 [inline]
 __dev_queue_xmit+0xe68/0x1db0 net/core/dev.c:4317
 dev_queue_xmit include/linux/netdevice.h:3171 [inline]
 neigh_hh_output include/net/neighbour.h:526 [inline]
 neigh_output include/net/neighbour.h:540 [inline]
 ip_finish_output2+0x726/0x870 net/ipv4/ip_output.c:235
 ip_finish_output+0xf4/0x240 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:451 [inline]
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 __ip_queue_xmit+0xb40/0xb60 net/ipv4/ip_output.c:535
 ip_queue_xmit+0x38/0x40 net/ipv4/ip_output.c:549
 __tcp_transmit_skb+0x11d9/0x1890 net/ipv4/tcp_output.c:1462
 tcp_transmit_skb net/ipv4/tcp_output.c:1480 [inline]
 tcp_write_xmit+0x12d7/0x2fe0 net/ipv4/tcp_output.c:2792
 __tcp_push_pending_frames+0x6a/0x1a0 net/ipv4/tcp_output.c:2977
 tcp_push+0x320/0x330 net/ipv4/tcp.c:737
 tcp_sendmsg_locked+0x21a8/0x2680 net/ipv4/tcp.c:1309
 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1341
 inet_sendmsg+0x63/0x80 net/ipv4/af_inet.c:850
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 sock_write_iter+0x1aa/0x230 net/socket.c:1160
 call_write_iter include/linux/fs.h:2087 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0x760/0x8d0 fs/read_write.c:590
 ksys_write+0xeb/0x1a0 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
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x00 -> 0x01

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3087 Comm: syz-fuzzer Not tainted 6.8.0-rc6-syzkaller-00120-g87adedeba51a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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