==================================================================
BUG: KCSAN: data-race in can_receive / can_receive

write to 0xffff88812ea18468 of 8 bytes by interrupt on cpu 1:
 can_receive+0x7b/0x1f0 net/can/af_can.c:652
 can_rcv+0x9e/0x170 net/can/af_can.c:696
 __netif_receive_skb_one_core net/core/dev.c:5323 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5437
 process_backlog+0x23f/0x3e0 net/core/dev.c:6327
 napi_poll+0x181/0x630 net/core/dev.c:6805
 net_rx_action+0x17a/0x490 net/core/dev.c:6888
 __do_softirq+0x13c/0x2c3 kernel/softirq.c:343
 run_ksoftirqd+0x13/0x20 kernel/softirq.c:650
 smpboot_thread_fn+0x34f/0x520 kernel/smpboot.c:165
 kthread+0x20b/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

read to 0xffff88812ea18468 of 8 bytes by interrupt on cpu 0:
 can_receive+0x6b/0x1f0 net/can/af_can.c:652
 can_rcv+0x9e/0x170 net/can/af_can.c:696
 __netif_receive_skb_one_core net/core/dev.c:5323 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5437
 process_backlog+0x23f/0x3e0 net/core/dev.c:6327
 napi_poll+0x181/0x630 net/core/dev.c:6805
 net_rx_action+0x17a/0x490 net/core/dev.c:6888
 __do_softirq+0x13c/0x2c3 kernel/softirq.c:343
 run_ksoftirqd+0x13/0x20 kernel/softirq.c:650
 smpboot_thread_fn+0x34f/0x520 kernel/smpboot.c:165
 kthread+0x20b/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.11.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================