================================================================== BUG: KCSAN: data-race in macsec_start_xmit / macsec_start_xmit write to 0xffff888132dac168 of 8 bytes by interrupt on cpu 1: macsec_start_xmit+0x342/0x1610 drivers/net/macsec.c:3399 __netdev_start_xmit include/linux/netdevice.h:4682 [inline] netdev_start_xmit include/linux/netdevice.h:4696 [inline] xmit_one+0x105/0x2f0 net/core/dev.c:3473 dev_hard_start_xmit net/core/dev.c:3489 [inline] __dev_queue_xmit+0x86d/0xf90 net/core/dev.c:4116 dev_queue_xmit_accel+0x19/0x20 net/core/dev.c:4155 macvlan_queue_xmit drivers/net/macvlan.c:543 [inline] macvlan_start_xmit+0x2b3/0x3d0 drivers/net/macvlan.c:567 __netdev_start_xmit include/linux/netdevice.h:4682 [inline] netdev_start_xmit include/linux/netdevice.h:4696 [inline] xmit_one+0x105/0x2f0 net/core/dev.c:3473 dev_hard_start_xmit net/core/dev.c:3489 [inline] __dev_queue_xmit+0x86d/0xf90 net/core/dev.c:4116 dev_queue_xmit+0x13/0x20 net/core/dev.c:4149 neigh_hh_output include/net/neighbour.h:525 [inline] neigh_output include/net/neighbour.h:539 [inline] ip6_finish_output2+0x995/0xbd0 net/ipv6/ip6_output.c:126 __ip6_finish_output net/ipv6/ip6_output.c:191 [inline] ip6_finish_output+0x446/0x4c0 net/ipv6/ip6_output.c:201 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x10e/0x210 net/ipv6/ip6_output.c:224 dst_output include/net/dst.h:451 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ndisc_send_skb+0x488/0x610 net/ipv6/ndisc.c:508 ndisc_send_rs+0x3b0/0x3e0 net/ipv6/ndisc.c:702 addrconf_rs_timer+0x370/0x540 net/ipv6/addrconf.c:3898 call_timer_fn+0x2e/0x240 kernel/time/timer.c:1421 expire_timers+0x116/0x240 kernel/time/timer.c:1466 __run_timers+0x368/0x410 kernel/time/timer.c:1734 run_timer_softirq+0x2e/0x60 kernel/time/timer.c:1747 __do_softirq+0x158/0x2de kernel/softirq.c:558 __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0x37/0x70 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:551 [inline] acpi_idle_enter+0x282/0x300 drivers/acpi/processor_idle.c:687 cpuidle_enter_state+0x2b4/0x7d0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x1b2/0x250 kernel/sched/idle.c:306 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 secondary_startup_64_no_verify+0xc4/0xcb read to 0xffff888132dac168 of 8 bytes by task 7 on cpu 0: macsec_start_xmit+0x330/0x1610 drivers/net/macsec.c:3399 __netdev_start_xmit include/linux/netdevice.h:4682 [inline] netdev_start_xmit include/linux/netdevice.h:4696 [inline] xmit_one+0x105/0x2f0 net/core/dev.c:3473 dev_hard_start_xmit net/core/dev.c:3489 [inline] __dev_queue_xmit+0x86d/0xf90 net/core/dev.c:4116 dev_queue_xmit_accel+0x19/0x20 net/core/dev.c:4155 macvlan_queue_xmit drivers/net/macvlan.c:543 [inline] macvlan_start_xmit+0x2b3/0x3d0 drivers/net/macvlan.c:567 __netdev_start_xmit include/linux/netdevice.h:4682 [inline] netdev_start_xmit include/linux/netdevice.h:4696 [inline] xmit_one+0x105/0x2f0 net/core/dev.c:3473 dev_hard_start_xmit net/core/dev.c:3489 [inline] __dev_queue_xmit+0x86d/0xf90 net/core/dev.c:4116 dev_queue_xmit+0x13/0x20 net/core/dev.c:4149 neigh_hh_output include/net/neighbour.h:525 [inline] neigh_output include/net/neighbour.h:539 [inline] ip6_finish_output2+0x995/0xbd0 net/ipv6/ip6_output.c:126 __ip6_finish_output net/ipv6/ip6_output.c:191 [inline] ip6_finish_output+0x446/0x4c0 net/ipv6/ip6_output.c:201 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x10e/0x210 net/ipv6/ip6_output.c:224 dst_output include/net/dst.h:451 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] mld_sendpack+0x3c7/0x580 net/ipv6/mcast.c:1826 mld_send_initial_cr net/ipv6/mcast.c:2245 [inline] ipv6_mc_dad_complete+0x1ca/0x3e0 net/ipv6/mcast.c:2253 addrconf_dad_completed+0x3fe/0x870 net/ipv6/addrconf.c:4196 addrconf_dad_work+0x908/0x1170 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307 worker_thread+0x616/0xa70 kernel/workqueue.c:2454 kthread+0x1bf/0x1e0 kernel/kthread.c:359 ret_from_fork+0x1f/0x30 value changed: 0x000000000000015f -> 0x0000000000000160 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: ipv6_addrconf addrconf_dad_work ==================================================================