================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881397c6fe8 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:5452 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5566 process_backlog+0x21f/0x380 net/core/dev.c:5894 __napi_poll+0x60/0x3b0 net/core/dev.c:6460 napi_poll net/core/dev.c:6527 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6660 __do_softirq+0xc1/0x265 kernel/softirq.c:553 run_ksoftirqd+0x17/0x20 kernel/softirq.c:921 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164 kthread+0x1d7/0x210 kernel/kthread.c:389 ret_from_fork+0x2e/0x40 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 read-write to 0xffff8881397c6fe8 of 8 bytes by interrupt on cpu 1: 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:5452 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5566 process_backlog+0x21f/0x380 net/core/dev.c:5894 __napi_poll+0x60/0x3b0 net/core/dev.c:6460 napi_poll net/core/dev.c:6527 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6660 __do_softirq+0xc1/0x265 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0x3b/0x90 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x6d/0x80 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 __cond_resched+0x0/0x50 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164 kthread+0x1d7/0x210 kernel/kthread.c:389 ret_from_fork+0x2e/0x40 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 value changed: 0x0000000000002b7d -> 0x0000000000002b7e Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 20 Comm: ksoftirqd/1 Not tainted 6.5.0-rc7-syzkaller-00164-g382d4cd18475 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 ==================================================================