vxcan0: j1939_xtp_rx_abort_one: 0xffff888110957200: 0x00000: (2) System resources were needed for another task so this connection managed session was terminated. ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff888115bbd770 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 __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 0xffff888115bbd770 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] 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: 0x0000000000012cd7 -> 0x0000000000012cd8 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6134 Comm: kworker/0:6 Tainted: G W 6.9.0-rc2-syzkaller-00435-g9fe30842a90b #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_rcv_filter / can_rcv_filter read-write to 0xffff888100f40798 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0xd1/0x4c0 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 0xffff888100f40798 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0xd1/0x4c0 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] release_sock+0x117/0x150 net/core/sock.c:3559 tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1343 inet_sendmsg+0x77/0xd0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x102/0x180 net/socket.c:745 sock_write_iter+0x164/0x1b0 net/socket.c:1160 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x771/0x8e0 fs/read_write.c:590 ksys_write+0xeb/0x1b0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:652 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x72/0x7a value changed: 0x000000000017e904 -> 0x000000000017e905 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3071 Comm: sshd Tainted: G W 6.9.0-rc2-syzkaller-00435-g9fe30842a90b #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 0xffff888115bbd710 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 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 0xffff888115bbd710 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 __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_encrypt_worker+0x9ed/0xa30 drivers/net/wireguard/send.c:293 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: 0x00000000001854cc -> 0x00000000001854cd Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6134 Comm: kworker/0:6 Tainted: G W 6.9.0-rc2-syzkaller-00435-g9fe30842a90b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff888115bbd770 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 __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] wg_index_hashtable_insert+0xaa/0x2a0 drivers/net/wireguard/peerlookup.c:126 wg_noise_handshake_create_initiation+0x52d/0x5f0 drivers/net/wireguard/noise.c:569 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline] wg_packet_handshake_send_worker+0xb3/0x150 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 read-write to 0xffff888115bbd770 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 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:851 [inline] wg_index_hashtable_lookup+0x100/0x120 drivers/net/wireguard/peerlookup.c:224 wg_noise_handshake_consume_response+0x12c/0x720 drivers/net/wireguard/noise.c:747 wg_receive_handshake_packet drivers/net/wireguard/receive.c:166 [inline] wg_packet_handshake_receive_worker+0x3fb/0x5f0 drivers/net/wireguard/receive.c:213 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: 0x00000000000056a4 -> 0x00000000000056a5 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6134 Comm: kworker/0:6 Tainted: G W 6.9.0-rc2-syzkaller-00435-g9fe30842a90b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff888100f40798 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0xd1/0x4c0 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] 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: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 0xffff888100f40798 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0xd1/0x4c0 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] 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: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: 0x00000000001d173d -> 0x00000000001d173e Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 2683 Comm: kworker/0:7 Tainted: G W 6.9.0-rc2-syzkaller-00435-g9fe30842a90b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: wg-crypt-wg1 wg_packet_decrypt_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff8881cb7c4020 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 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 0xffff8881cb7c4020 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_write_unlock_bh include/linux/rwlock_api_smp.h:281 [inline] _raw_write_unlock_bh+0x1f/0x30 kernel/locking/spinlock.c:366 neigh_periodic_work+0x55a/0x600 net/core/neighbour.c:1017 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: 0x001d9e75 -> 0x001d9e76 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3172 Comm: kworker/0:4 Tainted: G W 6.9.0-rc2-syzkaller-00435-g9fe30842a90b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events_power_efficient neigh_periodic_work ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff888115bbd710 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 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