================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff888104186d90 of 8 bytes by interrupt on cpu 1: can_send+0x558/0x5d0 net/can/af_can.c:289 bcm_can_tx+0x314/0x410 net/can/bcm.c:302 bcm_tx_timeout_handler+0xdb/0x260 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x217/0x710 kernel/time/hrtimer.c:1752 hrtimer_run_softirq+0xde/0x2b0 kernel/time/hrtimer.c:1769 __do_softirq+0xc4/0x27b kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0x3b/0x90 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 finish_task_switch+0xbe/0x2a0 kernel/sched/core.c:5274 context_switch kernel/sched/core.c:5403 [inline] __schedule+0x5d8/0x920 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0x54/0x80 kernel/sched/core.c:6817 smpboot_thread_fn+0x367/0x4a0 kernel/smpboot.c:160 kthread+0x1d7/0x210 kernel/kthread.c:388 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 read-write to 0xffff888104186d90 of 8 bytes by interrupt on cpu 0: can_send+0x558/0x5d0 net/can/af_can.c:289 bcm_can_tx+0x314/0x410 net/can/bcm.c:302 bcm_tx_timeout_handler+0xdb/0x260 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x217/0x710 kernel/time/hrtimer.c:1752 hrtimer_run_softirq+0xde/0x2b0 kernel/time/hrtimer.c:1769 __do_softirq+0xc4/0x27b kernel/softirq.c:553 run_ksoftirqd+0x17/0x20 kernel/softirq.c:921 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164 kthread+0x1d7/0x210 kernel/kthread.c:388 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 value changed: 0x0000000000001c25 -> 0x0000000000001c26 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.8.0-rc3-syzkaller-00041-g547ab8fc4cb0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ==================================================================