================================================================== BUG: KCSAN: data-race in can_receive / can_stat_update read to 0xffff88812316dbe8 of 8 bytes by interrupt on cpu 1: can_stat_update+0x444/0x6b0 net/can/proc.c:152 call_timer_fn+0x35/0x290 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x46c/0x650 kernel/time/timer.c:2022 run_timer_softirq+0x32/0x60 kernel/time/timer.c:2035 __do_softirq+0xe4/0x2b0 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x85/0x100 kernel/softirq.c:650 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 __sanitizer_cov_trace_pc+0x0/0x60 to_kthread kernel/kthread.c:75 [inline] kthread_should_stop+0x3e/0x80 kernel/kthread.c:157 smpboot_thread_fn+0x339/0x490 kernel/smpboot.c:114 kthread+0x1ac/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 read-write to 0xffff88812316dbe8 of 8 bytes by interrupt on cpu 0: can_receive+0x62/0x1f0 net/can/af_can.c:650 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5479 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5593 process_backlog+0x21f/0x380 net/core/dev.c:5921 __napi_poll+0x60/0x3b0 net/core/dev.c:6482 napi_poll net/core/dev.c:6549 [inline] net_rx_action+0x322/0x6c0 net/core/dev.c:6659 __do_softirq+0xe4/0x2b0 kernel/softirq.c:571 run_ksoftirqd+0x23/0x30 kernel/softirq.c:934 smpboot_thread_fn+0x2f8/0x490 kernel/smpboot.c:164 kthread+0x1ac/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 value changed: 0x00000000000035a1 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 6.3.0-rc3-syzkaller-00021-ga1effab7a3a3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 ==================================================================