syzbot

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BUG: KCSAN: data-race in can_rcv_filter / can_rx_unregister

read-write to 0xffff888135c3e020 of 4 bytes by task 19258 on cpu 0:
 can_rx_unregister+0x429/0x520 net/can/af_can.c:553
 bcm_release+0x235/0x5c0 net/can/bcm.c:1553
 __sock_release net/socket.c:653 [inline]
 sock_close+0x70/0x150 net/socket.c:1397
 __fput+0x245/0x570 fs/file_table.c:321
 ____fput+0x15/0x20 fs/file_table.c:349
 task_work_run+0x123/0x160 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd1/0xe0 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff888135c3e020 of 4 bytes by interrupt on cpu 1:
 can_rcv_filter+0x40/0x490 net/can/af_can.c:583
 can_receive+0x116/0x1f0 net/can/af_can.c:659
 canfd_rcv+0xe7/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5491 [inline]
 __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5605
 process_backlog+0x21f/0x380 net/core/dev.c:5933
 __napi_poll+0x60/0x3b0 net/core/dev.c:6496
 napi_poll net/core/dev.c:6563 [inline]
 net_rx_action+0x32b/0x750 net/core/dev.c:6696
 __do_softirq+0xc1/0x265 kernel/softirq.c:571
 run_ksoftirqd+0x17/0x20 kernel/softirq.c:939
 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x00000001 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 6.3.0-syzkaller-07919-g6e98b09da931 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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