================================================================== BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_enable_cb_delayed write to 0xffff888103609aca of 1 bytes by task 1807 on cpu 0: virtqueue_enable_cb_delayed+0x3e/0x3a0 drivers/virtio/virtio_ring.c:2101 start_xmit+0xf1/0xaf0 drivers/net/virtio_net.c:1771 __netdev_start_xmit include/linux/netdevice.h:4778 [inline] netdev_start_xmit include/linux/netdevice.h:4792 [inline] xmit_one+0x105/0x2f0 net/core/dev.c:3532 dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3548 sch_direct_xmit+0x1ac/0x580 net/sched/sch_generic.c:342 __dev_xmit_skb+0x808/0xdb0 net/core/dev.c:3759 __dev_queue_xmit+0x569/0xf00 net/core/dev.c:4141 dev_queue_xmit+0x13/0x20 net/core/dev.c:4209 neigh_hh_output include/net/neighbour.h:533 [inline] neigh_output include/net/neighbour.h:547 [inline] ip_finish_output2+0x709/0x850 net/ipv4/ip_output.c:228 ip_finish_output+0xf3/0x250 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip_output+0xf3/0x1a0 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:451 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0xa2e/0xa50 net/ipv4/ip_output.c:532 ip_queue_xmit+0x34/0x40 net/ipv4/ip_output.c:546 __tcp_transmit_skb+0x12a8/0x1790 net/ipv4/tcp_output.c:1402 __tcp_send_ack+0x1dc/0x2e0 net/ipv4/tcp_output.c:3970 tcp_send_ack+0x23/0x30 net/ipv4/tcp_output.c:3976 tcp_cleanup_rbuf+0x1c7/0x310 net/ipv4/tcp.c:1589 tcp_recvmsg_locked+0x1139/0x1550 net/ipv4/tcp.c:2544 tcp_recvmsg+0x16a/0x4e0 net/ipv4/tcp.c:2574 inet_recvmsg+0xa3/0x210 net/ipv4/af_inet.c:850 sock_recvmsg_nosec net/socket.c:948 [inline] sock_recvmsg net/socket.c:966 [inline] sock_read_iter+0x19d/0x1e0 net/socket.c:1039 call_read_iter include/linux/fs.h:2044 [inline] new_sync_read fs/read_write.c:401 [inline] vfs_read+0x5a5/0x6a0 fs/read_write.c:482 ksys_read+0xe8/0x1a0 fs/read_write.c:620 __do_sys_read fs/read_write.c:630 [inline] __se_sys_read fs/read_write.c:628 [inline] __x64_sys_read+0x3e/0x50 fs/read_write.c:628 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888103609aca of 1 bytes by interrupt on cpu 1: virtqueue_disable_cb+0x17/0x160 drivers/virtio/virtio_ring.c:2008 virtqueue_napi_schedule drivers/net/virtio_net.c:355 [inline] skb_xmit_done+0xa5/0x110 drivers/net/virtio_net.c:383 vring_interrupt+0x15d/0x180 drivers/virtio/virtio_ring.c:2148 __handle_irq_event_percpu+0x92/0x400 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x60/0xf0 kernel/irq/handle.c:210 handle_edge_irq+0x17e/0x5a0 kernel/irq/chip.c:817 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] handle_irq arch/x86/kernel/irq.c:231 [inline] __common_interrupt+0x60/0x100 arch/x86/kernel/irq.c:250 common_interrupt+0x9a/0xc0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x1e/0x40 finish_task_switch+0xfa/0x240 kernel/sched/core.c:4953 context_switch kernel/sched/core.c:5076 [inline] __schedule+0x514/0x6c0 kernel/sched/core.c:6388 schedule+0x71/0xa0 kernel/sched/core.c:6460 io_schedule+0x3b/0x50 kernel/sched/core.c:8563 bit_wait_io+0x8/0x50 kernel/sched/wait_bit.c:209 __wait_on_bit+0x46/0xd0 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0x93/0xb0 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:101 [inline] __wait_on_buffer+0x54/0x60 fs/buffer.c:122 wait_on_buffer include/linux/buffer_head.h:355 [inline] jbd2_journal_commit_transaction+0x13fd/0x2480 fs/jbd2/commit.c:845 kjournald2+0x1af/0x370 fs/jbd2/journal.c:213 kthread+0x1a9/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 value changed: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1404 Comm: jbd2/sda1-8 Not tainted 5.18.0-rc2-syzkaller-00275-g59250f8a7f3a-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================