================================================================== BUG: KCSAN: data-race in can_receive / can_stat_update read to 0xffff88810a2b8468 of 8 bytes by interrupt on cpu 1: can_stat_update+0x444/0x6b0 net/can/proc.c:152 call_timer_fn+0x3a/0x300 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x417/0x640 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0x31/0x70 kernel/time/timer.c:2449 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x3a/0xc0 kernel/softirq.c:662 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x37/0x80 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 read-write to 0xffff88810a2b8468 of 8 bytes by interrupt on cpu 0: can_receive+0x62/0x1f0 net/can/af_can.c:651 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5672 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5785 process_backlog+0x22e/0x440 net/core/dev.c:6117 __napi_poll+0x63/0x3c0 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7074 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __raw_write_unlock_bh include/linux/rwlock_api_smp.h:281 [inline] _raw_write_unlock_bh+0x1f/0x30 kernel/locking/spinlock.c:366 neigh_periodic_work+0x605/0x6b0 net/core/neighbour.c:968 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x0000000000017944 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 3376 Comm: kworker/0:5 Not tainted 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_power_efficient neigh_periodic_work ==================================================================