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BUG: KCSAN: data-race in can_receive / can_receive

read-write to 0xffff888104684e88 of 8 bytes by interrupt on cpu 1:
 can_receive+0x4e/0x1f0 net/can/af_can.c:649
 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
 do_softirq+0x5e/0x90 kernel/softirq.c:454
 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
 _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:395 [inline]
 batadv_nc_purge_paths+0x217/0x260 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x3db/0xac0 net/batman-adv/network-coding.c:720
 process_one_work+0x434/0x860 kernel/workqueue.c:2597
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2748
 kthread+0x1d7/0x210 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read-write to 0xffff888104684e88 of 8 bytes by interrupt on cpu 0:
 can_receive+0x4e/0x1f0 net/can/af_can.c:649
 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
 check_access kernel/kcsan/core.c:787 [inline]
 __tsan_read8+0x11d/0x180 kernel/kcsan/core.c:1025
 skb_tail_pointer include/linux/skbuff.h:2535 [inline]
 skb_put+0x29/0xf0 net/core/skbuff.c:2371
 skb_put_zero include/linux/skbuff.h:2613 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:777 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
 nsim_dev_trap_report_work+0x3ec/0x5a0 drivers/net/netdevsim/dev.c:853
 process_one_work+0x434/0x860 kernel/workqueue.c:2597
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2748
 kthread+0x1d7/0x210 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x0000000000008913 -> 0x0000000000008914

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.4.0-syzkaller-08686-ge55e5df193d2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events nsim_dev_trap_report_work
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