================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff888103c25158 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:606 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 read-write to 0xffff888103c25158 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:606 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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+0x73/0x80 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 j1939_sk_send_loop net/can/j1939/socket.c:1164 [inline] j1939_sk_sendmsg+0x954/0xc00 net/can/j1939/socket.c:1277 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:745 sock_write_iter+0x164/0x1b0 net/socket.c:1160 do_iter_readv_writev+0x339/0x3e0 vfs_writev+0x2e9/0x860 fs/read_write.c:971 do_writev+0xf8/0x220 fs/read_write.c:1018 __do_sys_writev fs/read_write.c:1091 [inline] __se_sys_writev fs/read_write.c:1088 [inline] __x64_sys_writev+0x45/0x50 fs/read_write.c:1088 x64_sys_call+0x1eca/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:21 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x000000000000086b -> 0x000000000000086c Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 10127 Comm: syz-executor.1 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881177af798 of 8 bytes by interrupt on cpu 1: can_receive+0x1b6/0x1f0 net/can/af_can.c:671 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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+0x3db/0xac0 net/batman-adv/network-coding.c:720 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:244 read-write to 0xffff8881177af798 of 8 bytes by interrupt on cpu 0: can_receive+0x1b6/0x1f0 net/can/af_can.c:671 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x000000000003ceb1 -> 0x000000000003ceb2 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 908 Comm: kworker/0:2 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #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_receive / can_receive read-write to 0xffff8881177af788 of 8 bytes by interrupt on cpu 1: 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 read-write to 0xffff8881177af788 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x000000000003f41d -> 0x000000000003f41e Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ================================================================== vxcan0: j1939_tp_rxtimer: 0xffff8881176c2e00: rx timeout, send abort vxcan0: j1939_tp_rxtimer: 0xffff8881176c2e00: abort rx timeout. Force session deactivation ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff8881177af790 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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] ip6t_do_table+0xadd/0xbb0 net/ipv6/netfilter/ip6_tables.c:375 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0x86/0x1b0 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK include/linux/netfilter.h:312 [inline] ndisc_send_skb+0x66a/0x6b0 net/ipv6/ndisc.c:509 ndisc_send_rs+0x3b8/0x3f0 net/ipv6/ndisc.c:719 addrconf_dad_completed+0x626/0x8a0 net/ipv6/addrconf.c:4358 addrconf_dad_work+0x891/0xbd0 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:244 read-write to 0xffff8881177af790 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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+0x3db/0xac0 net/batman-adv/network-coding.c:720 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:244 value changed: 0x000000000004c654 -> 0x000000000004c655 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #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_rcv_filter / can_rcv_filter read-write to 0xffff888101b272e8 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 read-write to 0xffff888101b272e8 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x000000000004dff0 -> 0x000000000004dff1 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #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_receive / can_receive read-write to 0xffff8881177af798 of 8 bytes by interrupt on cpu 1: can_receive+0x1b6/0x1f0 net/can/af_can.c:671 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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] addrconf_dad_work+0x18a/0xbd0 net/ipv6/addrconf.c:4222 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:244 read-write to 0xffff8881177af798 of 8 bytes by interrupt on cpu 0: can_receive+0x1b6/0x1f0 net/can/af_can.c:671 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x000000000005e88f -> 0x000000000005e890 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881177af7f8 of 8 bytes by interrupt on cpu 1: can_receive+0x1ca/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 read-write to 0xffff8881177af7f8 of 8 bytes by interrupt on cpu 0: can_receive+0x1ca/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x0000000000011459 -> 0x000000000001145b Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #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_can_gw_rcv / can_can_gw_rcv read-write to 0xffff8881175e8020 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 read-write to 0xffff8881175e8020 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x000a06f6 -> 0x000a06f7 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #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_receive / can_receive read-write to 0xffff8881177af798 of 8 bytes by interrupt on cpu 1: can_receive+0x1b6/0x1f0 net/can/af_can.c:671 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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_purge_orig_ref+0xb89/0xbf0 net/batman-adv/originator.c:1287 batadv_purge_orig+0x19/0x50 net/batman-adv/originator.c:1300 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:244 read-write to 0xffff8881177af798 of 8 bytes by interrupt on cpu 0: can_receive+0x1b6/0x1f0 net/can/af_can.c:671 can_rcv+0xe7/0x180 net/can/af_can.c:687 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x00000000000b9955 -> 0x00000000000b9956 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881177af788 of 8 bytes by interrupt on cpu 1: 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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_purge_orig_ref+0xb89/0xbf0 net/batman-adv/originator.c:1287 batadv_purge_orig+0x19/0x50 net/batman-adv/originator.c:1300 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:244 read-write to 0xffff8881177af788 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 value changed: 0x00000000000bc992 -> 0x00000000000bc993 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 908 Comm: kworker/0:2 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #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 0xffff888101b272e8 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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:244 read-write to 0xffff888101b272e8 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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_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: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:244 value changed: 0x00000000000e3898 -> 0x00000000000e3899 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: bat_events batadv_tt_purge ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff8881175e8020 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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] get_next_corpse net/netfilter/nf_conntrack_core.c:2385 [inline] nf_ct_iterate_cleanup+0x20d/0x3e0 net/netfilter/nf_conntrack_core.c:2406 nf_ct_iterate_cleanup_net+0x8a/0xa0 net/netfilter/nf_conntrack_core.c:2427 iterate_cleanup_work+0x66/0x120 net/netfilter/nf_nat_masquerade.c:87 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:244 read-write to 0xffff8881175e8020 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:5544 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5658 process_backlog+0x21f/0x380 net/core/dev.c:5987 __napi_poll+0x63/0x3c0 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x324/0x720 net/core/dev.c:6822 __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_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: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:244 value changed: 0x000f0464 -> 0x000f0465 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: bat_events batadv_tt_purge ==================================================================