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BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff888118a120f0 of 8 bytes by interrupt on cpu 0:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 j1939_send_one+0x19c/0x1d0 net/can/j1939/main.c:357
 j1939_tp_tx_dat net/can/j1939/transport.c:646 [inline]
 j1939_session_tx_dat net/can/j1939/transport.c:838 [inline]
 j1939_xtp_txnext_transmiter net/can/j1939/transport.c:900 [inline]
 j1939_tp_txtimer+0xca9/0x1a70 net/can/j1939/transport.c:1160
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1751
 hrtimer_run_softirq+0xe4/0x2c0 kernel/time/hrtimer.c:1768
 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-write to 0xffff888118a120f0 of 8 bytes by interrupt on cpu 1:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 j1939_send_one+0x19c/0x1d0 net/can/j1939/main.c:357
 j1939_tp_tx_dat net/can/j1939/transport.c:646 [inline]
 j1939_session_tx_dat net/can/j1939/transport.c:838 [inline]
 j1939_xtp_txnext_transmiter net/can/j1939/transport.c:900 [inline]
 j1939_tp_txtimer+0xca9/0x1a70 net/can/j1939/transport.c:1160
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1751
 hrtimer_run_softirq+0xe4/0x2c0 kernel/time/hrtimer.c:1768
 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
 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:94 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x3d/0x60 kernel/locking/spinlock.c:194
 unlock_hrtimer_base kernel/time/hrtimer.c:1016 [inline]
 hrtimer_start_range_ns+0x518/0x560 kernel/time/hrtimer.c:1303
 hrtimer_start include/linux/hrtimer.h:275 [inline]
 j1939_tp_schedule_txtimer+0x67/0xa0 net/can/j1939/transport.c:702
 j1939_sk_send_loop net/can/j1939/socket.c:1164 [inline]
 j1939_sk_sendmsg+0x954/0xc00 net/can/j1939/socket.c:1277
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x140/0x180 net/socket.c:745
 sock_write_iter+0x164/0x1b0 net/socket.c:1160
 do_iter_readv_writev+0x339/0x3e0
 vfs_writev+0x2e4/0x890 fs/read_write.c:971
 do_writev+0xf8/0x220 fs/read_write.c:1018
 __do_sys_writev fs/read_write.c:1091 [inline]
 __se_sys_writev fs/read_write.c:1088 [inline]
 __x64_sys_writev+0x45/0x50 fs/read_write.c:1088
 x64_sys_call+0x1ee2/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:21
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000000000002b7 -> 0x00000000000002b8

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 10630 Comm: syz-executor.4 Not tainted 6.10.0-rc1-syzkaller-00267-gcc8ed4d0a848 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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