==================================================================
BUG: KCSAN: data-race in can_send / can_stat_update

read-write to 0xffff88811f8a5670 of 8 bytes by interrupt on cpu 0:
 can_send+0x576/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77d/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5662 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5775
 process_backlog+0x22e/0x440 net/core/dev.c:6107
 __napi_poll+0x63/0x3c0 net/core/dev.c:6771
 napi_poll net/core/dev.c:6840 [inline]
 net_rx_action+0x3a1/0x7f0 net/core/dev.c:6962
 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 to 0xffff88811f8a5670 of 8 bytes by interrupt on cpu 1:
 can_stat_update+0x48f/0x6b0 net/can/proc.c:157
 call_timer_fn+0x3a/0x300 kernel/time/timer.c:1794
 expire_timers kernel/time/timer.c:1845 [inline]
 __run_timers kernel/time/timer.c:2419 [inline]
 __run_timer_base+0x417/0x640 kernel/time/timer.c:2430
 run_timer_base kernel/time/timer.c:2439 [inline]
 run_timer_softirq+0x31/0x70 kernel/time/timer.c:2449
 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:1037 [inline]
 sysvec_apic_timer_interrupt+0x73/0x80 arch/x86/kernel/apic/apic.c:1037
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:107 [inline]
 raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2170 [inline]
 atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock include/linux/spinlock_api_smp.h:134 [inline]
 _raw_spin_lock+0x18/0x50 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 io_cq_lock io_uring/io_uring.c:585 [inline]
 __io_cqring_overflow_flush+0xaf/0x590 io_uring/io_uring.c:623
 io_cqring_do_overflow_flush io_uring/io_uring.c:671 [inline]
 io_cqring_wait io_uring/io_uring.c:2617 [inline]
 __do_sys_io_uring_enter io_uring/io_uring.c:3384 [inline]
 __se_sys_io_uring_enter+0x13c8/0x17b0 io_uring/io_uring.c:3276
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3276
 x64_sys_call+0x2567/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:427
 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: 0x000000000001163b -> 0x000000000001163c

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 6134 Comm: syz.4.1115 Tainted: G        W          6.11.0-syzkaller-11993-g3efc57369a0c #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
==================================================================