================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff88812a885020 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:5991 [inline] __netif_receive_skb+0x11d/0x270 net/core/dev.c:6104 process_backlog+0x229/0x420 net/core/dev.c:6456 __napi_poll+0x63/0x310 net/core/dev.c:7506 napi_poll net/core/dev.c:7569 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7696 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x328/0x530 kernel/smpboot.c:160 kthread+0x486/0x510 kernel/kthread.c:463 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 0xffff88812a885020 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:5991 [inline] __netif_receive_skb+0x11d/0x270 net/core/dev.c:6104 process_backlog+0x229/0x420 net/core/dev.c:6456 __napi_poll+0x63/0x310 net/core/dev.c:7506 napi_poll net/core/dev.c:7569 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7696 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x328/0x530 kernel/smpboot.c:160 kthread+0x486/0x510 kernel/kthread.c:463 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: 0x00172993 -> 0x00172995 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff88810222b3d8 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:5991 [inline] __netif_receive_skb+0x11d/0x270 net/core/dev.c:6104 process_backlog+0x229/0x420 net/core/dev.c:6456 __napi_poll+0x63/0x310 net/core/dev.c:7506 napi_poll net/core/dev.c:7569 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7696 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] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_encrypt_worker+0xb44/0xb80 drivers/net/wireguard/send.c:293 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3319 worker_thread+0x582/0x770 kernel/workqueue.c:3400 kthread+0x486/0x510 kernel/kthread.c:463 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 0xffff88810222b3d8 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:5991 [inline] __netif_receive_skb+0x11d/0x270 net/core/dev.c:6104 process_backlog+0x229/0x420 net/core/dev.c:6456 __napi_poll+0x63/0x310 net/core/dev.c:7506 napi_poll net/core/dev.c:7569 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7696 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] lock_sock_nested+0x112/0x140 net/core/sock.c:3718 lock_sock include/net/sock.h:1669 [inline] tcp_close+0x1d/0xd0 net/ipv4/tcp.c:3273 inet_release+0xcb/0xf0 net/ipv4/af_inet.c:435 __sock_release net/socket.c:649 [inline] sock_close+0x6b/0x150 net/socket.c:1439 __fput+0x298/0x650 fs/file_table.c:468 fput_close_sync+0x6e/0x120 fs/file_table.c:573 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __x64_sys_close+0x56/0xf0 fs/open.c:1572 x64_sys_call+0x2738/0x2ff0 arch/x86/include/generated/asm/syscalls_64.h:4 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: 0x0000000000175319 -> 0x000000000017531a Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 8197 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff88810222b3d8 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:5991 [inline] __netif_receive_skb+0x11d/0x270 net/core/dev.c:6104 process_backlog+0x229/0x420 net/core/dev.c:6456 __napi_poll+0x63/0x310 net/core/dev.c:7506 napi_poll net/core/dev.c:7569 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7696 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] nsim_dev_trap_report drivers/net/netdevsim/dev.c:835 [inline] nsim_dev_trap_report_work+0x52b/0x630 drivers/net/netdevsim/dev.c:866 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3319 worker_thread+0x582/0x770 kernel/workqueue.c:3400 kthread+0x486/0x510 kernel/kthread.c:463 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 0xffff88810222b3d8 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:5991 [inline] __netif_receive_skb+0x11d/0x270 net/core/dev.c:6104 process_backlog+0x229/0x420 net/core/dev.c:6456 __napi_poll+0x63/0x310 net/core/dev.c:7506 napi_poll net/core/dev.c:7569 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7696 handle_softirqs+0xb7/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x328/0x530 kernel/smpboot.c:160 kthread+0x486/0x510 kernel/kthread.c:463 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: 0x00000000002a547d -> 0x00000000002a547e Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 ==================================================================