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BUG: KCSAN: data-race in can_receive / can_stat_update

read-write to 0xffff888103021468 of 8 bytes by interrupt on cpu 1:
 can_receive+0x62/0x1f0 net/can/af_can.c:650
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5625 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5739
 process_backlog+0x21d/0x3c0 net/core/dev.c:6068
 __napi_poll+0x63/0x3c0 net/core/dev.c:6722
 napi_poll net/core/dev.c:6791 [inline]
 net_rx_action+0x324/0x740 net/core/dev.c:6907
 handle_softirqs+0xc3/0x280 kernel/softirq.c:554
 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:928
 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164
 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

read to 0xffff888103021468 of 8 bytes by interrupt on cpu 0:
 can_stat_update+0x444/0x6b0 net/can/proc.c:152
 call_timer_fn+0x3a/0x300 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1843 [inline]
 __run_timers kernel/time/timer.c:2417 [inline]
 __run_timer_base+0x417/0x640 kernel/time/timer.c:2428
 run_timer_base kernel/time/timer.c:2437 [inline]
 run_timer_softirq+0x31/0x70 kernel/time/timer.c:2447
 handle_softirqs+0xc3/0x280 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0x3e/0x90 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x73/0x80 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 __tsan_read1+0x0/0x180 kernel/kcsan/core.c:976
 radix_tree_descend lib/radix-tree.c:88 [inline]
 __radix_tree_lookup lib/radix-tree.c:766 [inline]
 radix_tree_delete_item+0x92/0x260 lib/radix-tree.c:1420
 idr_remove+0x2e/0x40 lib/idr.c:154
 kernfs_put+0x125/0x240 fs/kernfs/dir.c:575
 kernfs_remove_by_name_ns+0x91/0xf0 fs/kernfs/dir.c:1695
 kernfs_remove_by_name include/linux/kernfs.h:625 [inline]
 remove_files fs/sysfs/group.c:28 [inline]
 sysfs_remove_group+0x95/0x170 fs/sysfs/group.c:319
 sysfs_remove_groups+0x3a/0x80 fs/sysfs/group.c:343
 device_remove_groups drivers/base/core.c:2833 [inline]
 device_remove_attrs+0x14d/0x190 drivers/base/core.c:2969
 device_del+0x368/0x780 drivers/base/core.c:3867
 netdev_unregister_kobject+0x10c/0x120 net/core/net-sysfs.c:2108
 unregister_netdevice_many_notify+0xb0c/0xf00 net/core/dev.c:11249
 unregister_netdevice_many net/core/dev.c:11277 [inline]
 default_device_exit_batch+0x607/0x660 net/core/dev.c:11760
 ops_exit_list net/core/net_namespace.c:178 [inline]
 cleanup_net+0x4cf/0x830 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3329
 worker_thread+0x526/0x720 kernel/workqueue.c:3409
 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: 0x00000000000070dd -> 0x00000000000070de

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 36 Comm: kworker/u8:2 Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: netns cleanup_net
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