================================================================== BUG: KCSAN: data-race in virtqueue_disable_cb / vring_interrupt write to 0xffff8881033ab05a of 1 bytes by interrupt on cpu 1: vring_interrupt+0x124/0x170 drivers/virtio/virtio_ring.c:2458 __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:819 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+0x22/0x40 arch/x86/include/asm/idtentry.h:640 kcsan_setup_watchpoint+0x3e9/0x3f0 kernel/kcsan/core.c:694 dentry_unlist fs/dcache.c:570 [inline] __dentry_kill+0x1c7/0x450 fs/dcache.c:603 shrink_dentry_list+0x20f/0x380 fs/dcache.c:1201 shrink_dcache_parent+0x4d/0x1b0 vfs_rmdir+0x27f/0x2f0 fs/namei.c:4102 do_rmdir+0x178/0x300 fs/namei.c:4159 __do_sys_unlinkat fs/namei.c:4339 [inline] __se_sys_unlinkat fs/namei.c:4333 [inline] __x64_sys_unlinkat+0xa0/0xb0 fs/namei.c:4333 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+0x63/0xcd read to 0xffff8881033ab05a of 1 bytes by interrupt on cpu 0: virtqueue_disable_cb+0x17/0x160 drivers/virtio/virtio_ring.c:2307 start_xmit+0xd1/0xaf0 drivers/net/virtio_net.c:1833 __netdev_start_xmit include/linux/netdevice.h:4838 [inline] netdev_start_xmit include/linux/netdevice.h:4852 [inline] xmit_one+0xc0/0x2a0 net/core/dev.c:3590 dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606 sch_direct_xmit+0x1ac/0x580 net/sched/sch_generic.c:342 __dev_xmit_skb+0x806/0xdb0 net/core/dev.c:3817 __dev_queue_xmit+0x59f/0xfe0 net/core/dev.c:4222 dev_queue_xmit include/linux/netdevice.h:3008 [inline] neigh_hh_output include/net/neighbour.h:530 [inline] neigh_output include/net/neighbour.h:544 [inline] ip_finish_output2+0x70b/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:291 [inline] ip_output+0xf3/0x1a0 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:445 [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+0x1242/0x1730 net/ipv4/tcp_output.c:1402 __tcp_send_ack+0x1dc/0x2e0 net/ipv4/tcp_output.c:3986 tcp_send_ack+0x23/0x30 net/ipv4/tcp_output.c:3992 __tcp_ack_snd_check+0x2d3/0x500 net/ipv4/tcp_input.c:5523 tcp_rcv_established+0xcbc/0xea0 net/ipv4/tcp_input.c:5967 tcp_v4_do_rcv+0x2a8/0x5a0 net/ipv4/tcp_ipv4.c:1681 tcp_v4_rcv+0x1806/0x1a70 net/ipv4/tcp_ipv4.c:2100 ip_protocol_deliver_rcu+0x23f/0x490 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x126/0x160 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:302 [inline] ip_local_deliver+0x100/0x1b0 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:455 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:575 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:625 [inline] ip_sublist_rcv+0x524/0x5f0 net/ipv4/ip_input.c:633 ip_list_rcv+0x277/0x2b0 net/ipv4/ip_input.c:668 __netif_receive_skb_list_ptype net/core/dev.c:5528 [inline] __netif_receive_skb_list_core+0x37d/0x490 net/core/dev.c:5576 __netif_receive_skb_list+0x2a2/0x320 net/core/dev.c:5628 netif_receive_skb_list_internal+0x254/0x390 net/core/dev.c:5719 gro_normal_list include/net/gro.h:433 [inline] napi_complete_done+0x1b2/0x3c0 net/core/dev.c:6060 virtqueue_napi_complete drivers/net/virtio_net.c:401 [inline] virtnet_poll+0x6e4/0x990 drivers/net/virtio_net.c:1678 __napi_poll+0x65/0x390 net/core/dev.c:6494 napi_poll net/core/dev.c:6561 [inline] net_rx_action+0x37e/0x730 net/core/dev.c:6672 __do_softirq+0xf2/0x2c7 kernel/softirq.c:571 __irq_exit_rcu kernel/softirq.c:650 [inline] irq_exit_rcu+0x41/0x70 kernel/softirq.c:662 common_interrupt+0x9f/0xc0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:640 get_current arch/x86/include/asm/current.h:15 [inline] get_ctx kernel/kcsan/core.c:204 [inline] check_access kernel/kcsan/core.c:739 [inline] __tsan_unaligned_write8+0x11d/0x180 kernel/kcsan/core.c:1014 __tlb_adjust_range include/asm-generic/tlb.h:328 [inline] tlb_flush_pte_range include/asm-generic/tlb.h:527 [inline] zap_pte_range+0x450/0x1560 mm/memory.c:1438 zap_pmd_range mm/memory.c:1575 [inline] zap_pud_range mm/memory.c:1604 [inline] zap_p4d_range mm/memory.c:1625 [inline] unmap_page_range+0x3ac/0x730 mm/memory.c:1646 unmap_single_vma+0x157/0x230 mm/memory.c:1694 unmap_vmas+0xdf/0x1a0 mm/memory.c:1731 exit_mmap+0x11f/0x380 mm/mmap.c:3116 __mmput+0x27/0x1b0 kernel/fork.c:1187 mmput+0x3d/0x50 kernel/fork.c:1208 exit_mm+0xdb/0x170 kernel/exit.c:510 do_exit+0x556/0x1710 kernel/exit.c:800 do_group_exit+0xfe/0x140 kernel/exit.c:943 get_signal+0xb40/0xc60 kernel/signal.c:2858 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12035 Comm: syz-executor.4 Not tainted 6.0.0-syzkaller-10145-ge2302539dd4f-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 ==================================================================