================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff8881125e6770 of 8 bytes by interrupt on cpu 0: can_send+0x576/0x5d0 net/can/af_can.c:290 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 0xffff8881125e6770 of 8 bytes by interrupt on cpu 1: can_send+0x576/0x5d0 net/can/af_can.c:290 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+0x5e/0x90 kernel/softirq.c:455 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_nc_purge_paths+0x220/0x270 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x3db/0xad0 net/batman-adv/network-coding.c:720 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 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 value changed: 0x0000000000000871 -> 0x0000000000000872 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 1867 Comm: kworker/u8:7 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Workqueue: bat_events batadv_nc_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881125e6708 of 8 bytes by interrupt on cpu 0: can_receive+0x4e/0x1f0 net/can/af_can.c:649 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5783 process_backlog+0x22e/0x440 net/core/dev.c:6115 __napi_poll+0x63/0x3c0 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:6970 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 0xffff8881125e6708 of 8 bytes by interrupt on cpu 1: can_receive+0x4e/0x1f0 net/can/af_can.c:649 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5783 process_backlog+0x22e/0x440 net/core/dev.c:6115 __napi_poll+0x63/0x3c0 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:6970 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 value changed: 0x00000000000043fe -> 0x00000000000043ff Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff8881125e6710 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 0xffff8881125e6710 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+0x5e/0x90 kernel/softirq.c:455 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] addrconf_ifdown+0x3b7/0xf20 net/ipv6/addrconf.c:3912 addrconf_notify+0x2ff/0x950 notifier_call_chain kernel/notifier.c:93 [inline] raw_notifier_call_chain+0x6f/0x1d0 kernel/notifier.c:461 call_netdevice_notifiers_info+0xae/0x100 net/core/dev.c:1996 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers net/core/dev.c:2048 [inline] unregister_netdevice_many_notify+0x8b7/0x11b0 net/core/dev.c:11407 unregister_netdevice_many net/core/dev.c:11469 [inline] unregister_netdevice_queue+0x1f4/0x220 net/core/dev.c:11343 unregister_netdevice include/linux/netdevice.h:3118 [inline] __tun_detach+0x79e/0xaa0 drivers/net/tun.c:685 tun_detach drivers/net/tun.c:701 [inline] tun_chr_close+0x58/0xf0 drivers/net/tun.c:3517 __fput+0x17a/0x6d0 fs/file_table.c:431 ____fput+0x1c/0x30 fs/file_table.c:459 task_work_run+0x13a/0x1a0 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0x5dd/0x17f0 kernel/exit.c:939 do_group_exit+0x102/0x150 kernel/exit.c:1088 get_signal+0xf2a/0x1070 kernel/signal.c:2918 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x59/0x130 kernel/entry/common.c:218 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x0000000000005a83 -> 0x0000000000005a84 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3805 Comm: syz.0.131 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881125e6708 of 8 bytes by interrupt on cpu 0: can_receive+0x4e/0x1f0 net/can/af_can.c:649 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5783 process_backlog+0x22e/0x440 net/core/dev.c:6115 __napi_poll+0x63/0x3c0 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:6970 handle_softirqs+0xbf/0x280 kernel/softirq.c:554 do_softirq+0x5e/0x90 kernel/softirq.c:455 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_tt_local_purge+0x1a8/0x1f0 net/batman-adv/translation-table.c:1356 batadv_tt_purge+0x2b/0x630 net/batman-adv/translation-table.c:3560 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 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 0xffff8881125e6708 of 8 bytes by interrupt on cpu 1: can_receive+0x4e/0x1f0 net/can/af_can.c:649 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5783 process_backlog+0x22e/0x440 net/core/dev.c:6115 __napi_poll+0x63/0x3c0 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:6970 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 value changed: 0x000000000003acb7 -> 0x000000000003acb8 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff8881125e6710 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 0xffff8881125e6710 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 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 value changed: 0x000000000002b2d1 -> 0x000000000002b2d2 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff8881125e6770 of 8 bytes by interrupt on cpu 0: can_send+0x576/0x5d0 net/can/af_can.c:290 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+0x5e/0x90 kernel/softirq.c:455 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline] nsim_dev_trap_report_work+0x4d8/0x5b0 drivers/net/netdevsim/dev.c:851 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 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 0xffff8881125e6770 of 8 bytes by interrupt on cpu 1: can_send+0x576/0x5d0 net/can/af_can.c:290 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 value changed: 0x00000000000082d8 -> 0x00000000000082d9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881125e6768 of 8 bytes by interrupt on cpu 0: can_receive+0x62/0x1f0 net/can/af_can.c:650 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5783 process_backlog+0x22e/0x440 net/core/dev.c:6115 __napi_poll+0x63/0x3c0 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:6970 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 0xffff8881125e6768 of 8 bytes by interrupt on cpu 1: can_receive+0x62/0x1f0 net/can/af_can.c:650 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5783 process_backlog+0x22e/0x440 net/core/dev.c:6115 __napi_poll+0x63/0x3c0 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:6970 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 value changed: 0x0000000000010fe4 -> 0x0000000000010fe5 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff8881125e6710 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 do_softirq+0x5e/0x90 kernel/softirq.c:455 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_nc_purge_paths+0x220/0x270 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x3db/0xad0 net/batman-adv/network-coding.c:720 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 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 0xffff8881125e6710 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 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 value changed: 0x0000000000051d01 -> 0x0000000000051d02 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff8881125e6770 of 8 bytes by interrupt on cpu 0: can_send+0x576/0x5d0 net/can/af_can.c:290 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 0xffff8881125e6770 of 8 bytes by interrupt on cpu 1: can_send+0x576/0x5d0 net/can/af_can.c:290 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 value changed: 0x0000000000008e1a -> 0x0000000000008e1b Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00192-gb5a24181e461 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ==================================================================