==================================================================
BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv

read-write to 0xffff88814a0b8358 of 4 bytes by interrupt on cpu 0:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 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+0x4d5/0x5b0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

read-write to 0xffff88814a0b8358 of 4 bytes by interrupt on cpu 1:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 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+0x4d5/0x5b0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

value changed: 0x00ab3241 -> 0x00ab3242

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 25332 Comm: kworker/1:0 Tainted: G        W          6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events nsim_dev_trap_report_work
==================================================================
==================================================================
BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff88814cf7cc10 of 8 bytes by interrupt on cpu 0:
 can_send+0x55c/0x5d0 net/can/af_can.c:289
 can_can_gw_rcv+0x77b/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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 update_defense_level+0x5d5/0x610 net/netfilter/ipvs/ip_vs_ctl.c:210
 defense_work_handler+0x1f/0x80 net/netfilter/ipvs/ip_vs_ctl.c:235
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

read-write to 0xffff88814cf7cc10 of 8 bytes by interrupt on cpu 1:
 can_send+0x55c/0x5d0 net/can/af_can.c:289
 can_can_gw_rcv+0x77b/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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 run_ksoftirqd+0x17/0x30 kernel/softirq.c:924
 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

value changed: 0x0000000000ac0c98 -> 0x0000000000ac0c99

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 22 Comm: ksoftirqd/1 Tainted: G        W          6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
==================================================================
==================================================================
BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv

read-write to 0xffff88814a0b8358 of 4 bytes by interrupt on cpu 0:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:633 [inline]
 irq_exit_rcu+0x3c/0x90 kernel/softirq.c:645
 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 0xffff88814a0b8358 of 4 bytes by interrupt on cpu 1:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 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:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

value changed: 0x00b07cdc -> 0x00b07cdd

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 35 Comm: kworker/u8:2 Tainted: G        W          6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: bat_events batadv_nc_worker
==================================================================
==================================================================
BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff88814cf7cc70 of 8 bytes by interrupt on cpu 0:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 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]
 macvlan_process_broadcast+0x138/0x310 drivers/net/macvlan.c:332
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

read-write to 0xffff88814cf7cc70 of 8 bytes by interrupt on cpu 1:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 fpu__restore_sig+0x5ce/0xaf0 arch/x86/kernel/fpu/signal.c:493
 restore_sigcontext+0x1b5/0x220 arch/x86/kernel/signal_64.c:95
 __do_sys_rt_sigreturn+0xc5/0x150 arch/x86/kernel/signal_64.c:263
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x72/0x7a

value changed: 0x00000000000098f5 -> 0x00000000000098f6

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3232 Comm: syz-fuzzer Tainted: G        W          6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
==================================================================
==================================================================
BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff88814cf7cc70 of 8 bytes by interrupt on cpu 0:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 run_ksoftirqd+0x17/0x30 kernel/softirq.c:924
 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

read-write to 0xffff88814cf7cc70 of 8 bytes by interrupt on cpu 1:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/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:5538 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5652
 process_backlog+0x21f/0x380 net/core/dev.c:5981
 __napi_poll+0x63/0x3c0 net/core/dev.c:6632
 napi_poll net/core/dev.c:6701 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6816
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:851 [inline]
 mod_peer_timer drivers/net/wireguard/timers.c:38 [inline]
 wg_timers_any_authenticated_packet_traversal+0xe5/0x110 drivers/net/wireguard/timers.c:215
 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:36 [inline]
 wg_packet_handshake_send_worker+0xd7/0x150 drivers/net/wireguard/send.c:51
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

value changed: 0x000000000000d4b0 -> 0x000000000000d4b1

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 28558 Comm: kworker/u8:10 Tainted: G        W          6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
==================================================================