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BUG: KCSAN: data-race in bcm_can_tx / bcm_tx_setup

read to 0xffff88813be57f10 of 4 bytes by interrupt on cpu 1:
 bcm_can_tx+0x354/0x410 net/can/bcm.c:306
 bcm_tx_timeout_handler+0xdb/0x260
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0xed/0x140 kernel/time/hrtimer.c:1766
 __do_softirq+0xe4/0x2b0 kernel/softirq.c:571
 run_ksoftirqd+0x23/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x2f8/0x490 kernel/smpboot.c:164
 kthread+0x1ac/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

write to 0xffff88813be57f10 of 4 bytes by task 23520 on cpu 0:
 bcm_tx_setup+0x6e9/0xd70 net/can/bcm.c:997
 bcm_sendmsg+0x38b/0x470 net/can/bcm.c:1351
 sock_sendmsg_nosec net/socket.c:722 [inline]
 sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x375/0x4c0 net/socket.c:2504
 ___sys_sendmsg net/socket.c:2558 [inline]
 __sys_sendmsg+0x1e3/0x270 net/socket.c:2587
 __do_sys_sendmsg net/socket.c:2596 [inline]
 __se_sys_sendmsg net/socket.c:2594 [inline]
 __x64_sys_sendmsg+0x46/0x50 net/socket.c:2594
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x0000001d -> 0x0000001e

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 23520 Comm: syz-executor.3 Not tainted 6.2.0-syzkaller-12018-g2fcd07b7ccd5-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
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