================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff8881014cd658 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x63/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x32b/0x530 kernel/smpboot.c:164 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xda/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff8881014cd658 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x63/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_tasks_invoke_cbs+0x29a/0x340 kernel/rcu/tasks.h:578 rcu_tasks_one_gp+0x891/0x8e0 kernel/rcu/tasks.h:627 rcu_tasks_kthread+0xf7/0x110 kernel/rcu/tasks.h:657 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xda/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x0000000000070d80 -> 0x0000000000070d81 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 28 Comm: rcu_tasks_trace Not tainted 6.15.0-syzkaller-12426-ge271ed52b344 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff8881014cd658 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x63/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 __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+0x22b/0x270 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x3d8/0xae0 net/batman-adv/network-coding.c:720 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x4cb/0x9d0 kernel/workqueue.c:3321 worker_thread+0x582/0x770 kernel/workqueue.c:3402 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xda/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff8881014cd658 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x63/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] xt_replace_table+0x260/0x450 net/netfilter/x_tables.c:1428 __do_replace+0xc9/0x570 net/ipv4/netfilter/ip_tables.c:1064 do_replace net/ipv4/netfilter/ip_tables.c:1141 [inline] do_ipt_set_ctl+0x6ea/0x820 net/ipv4/netfilter/ip_tables.c:1635 nf_setsockopt+0x196/0x1b0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0x102/0x110 net/ipv4/ip_sockglue.c:1424 tcp_setsockopt+0x98/0xb0 net/ipv4/tcp.c:4108 sock_common_setsockopt+0x66/0x80 net/core/sock.c:3944 do_sock_setsockopt net/socket.c:2296 [inline] __sys_setsockopt+0x181/0x200 net/socket.c:2321 __do_sys_setsockopt net/socket.c:2327 [inline] __se_sys_setsockopt net/socket.c:2324 [inline] __x64_sys_setsockopt+0x64/0x80 net/socket.c:2324 x64_sys_call+0x2bd5/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:55 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000000000a9aba -> 0x00000000000a9abb Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 12666 Comm: syz-executor Not tainted 6.15.0-syzkaller-12426-ge271ed52b344 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff8881039ce020 of 4 bytes by interrupt on cpu 0: can_can_gw_rcv+0x807/0x820 net/can/gw.c:566 deliver net/can/af_can.c:575 [inline] can_rcv_filter+0xc7/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x63/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x32b/0x530 kernel/smpboot.c:164 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xda/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff8881039ce020 of 4 bytes by interrupt on cpu 1: can_can_gw_rcv+0x807/0x820 net/can/gw.c:566 deliver net/can/af_can.c:575 [inline] can_rcv_filter+0xc7/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x63/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 __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_global_purge net/batman-adv/translation-table.c:2250 [inline] batadv_tt_purge+0x2cd/0x610 net/batman-adv/translation-table.c:3510 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x4cb/0x9d0 kernel/workqueue.c:3321 worker_thread+0x582/0x770 kernel/workqueue.c:3402 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xda/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x00124813 -> 0x00124815 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 16477 Comm: kworker/u8:58 Not tainted 6.15.0-syzkaller-12426-ge271ed52b344 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: bat_events batadv_tt_purge ==================================================================