================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff88810ee99e10 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:1689 [inline] __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0xe4/0x2c0 kernel/time/hrtimer.c:1770 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 __sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:203 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:405 [inline] batadv_nc_worker+0x39f/0xac0 net/batman-adv/network-coding.c:719 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312 worker_thread+0x526/0x700 kernel/workqueue.c:3390 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 0xffff88810ee99e10 of 8 bytes by interrupt on cpu 0: can_send+0x562/0x5d0 net/can/af_can.c:289 j1939_send_one+0x1a9/0x1e0 net/can/j1939/main.c:353 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+0xcab/0x1a70 net/can/j1939/transport.c:1160 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0xe4/0x2c0 kernel/time/hrtimer.c:1770 handle_softirqs+0xc3/0x280 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] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_decrypt_worker+0x173/0x6f0 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312 worker_thread+0x526/0x700 kernel/workqueue.c:3390 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: 0x0000000000001b8b -> 0x0000000000001b8c Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.10.0-syzkaller-12030-g66ebbdfdeb09 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: wg-crypt-wg1 wg_packet_decrypt_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff88810ee99e08 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:5660 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5774 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+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+0x37/0x80 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 read-write to 0xffff88810ee99e08 of 8 bytes by interrupt on cpu 0: can_receive+0x4e/0x1f0 net/can/af_can.c:649 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5660 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5774 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+0xc3/0x280 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+0x21d/0x270 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x402/0xac0 net/batman-adv/network-coding.c:722 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312 worker_thread+0x526/0x700 kernel/workqueue.c:3390 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: 0x0000000000008d0f -> 0x0000000000008d10 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 5400 Comm: kworker/u8:17 Not tainted 6.10.0-syzkaller-12030-g66ebbdfdeb09 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: bat_events batadv_nc_worker ================================================================== vxcan0: j1939_tp_rxtimer: 0xffff888115309800: rx timeout, send abort vxcan0: j1939_tp_rxtimer: 0xffff888115309800: abort rx timeout. Force session deactivation