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BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff8881044b3810 of 8 bytes by interrupt on cpu 0:
 can_send+0x562/0x5d0 net/can/af_can.c:289
 bcm_can_tx+0x314/0x420 net/can/bcm.c:314
 bcm_tx_timeout_handler+0xdb/0x260
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0xe4/0x2c0 kernel/time/hrtimer.c:1772
 handle_softirqs+0xbf/0x280 kernel/softirq.c:554
 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:927
 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-write to 0xffff8881044b3810 of 8 bytes by interrupt on cpu 1:
 can_send+0x562/0x5d0 net/can/af_can.c:289
 bcm_can_tx+0x314/0x420 net/can/bcm.c:314
 bcm_tx_timeout_handler+0xdb/0x260
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0xe4/0x2c0 kernel/time/hrtimer.c:1772
 handle_softirqs+0xbf/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:1049 [inline]
 sysvec_apic_timer_interrupt+0x37/0x80 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702

value changed: 0x00000000000002bc -> 0x00000000000002bd

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 5969 Comm: syz.0.1009 Not tainted 6.12.0-rc5-syzkaller-00047-g4236f913808c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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