================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888132a2f608 of 8 bytes by interrupt on cpu 0: can_receive+0x4e/0x1f0 net/can/af_can.c:649 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5523 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5637 process_backlog+0x21f/0x380 net/core/dev.c:5965 __napi_poll+0x60/0x3b0 net/core/dev.c:6527 napi_poll net/core/dev.c:6594 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6727 __do_softirq+0xc1/0x265 kernel/softirq.c:553 run_ksoftirqd+0x17/0x20 kernel/softirq.c:921 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164 kthread+0x1d7/0x210 kernel/kthread.c:388 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 read-write to 0xffff888132a2f608 of 8 bytes by interrupt on cpu 1: can_receive+0x4e/0x1f0 net/can/af_can.c:649 canfd_rcv+0xe7/0x180 net/can/af_can.c:702 __netif_receive_skb_one_core net/core/dev.c:5523 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5637 process_backlog+0x21f/0x380 net/core/dev.c:5965 __napi_poll+0x60/0x3b0 net/core/dev.c:6527 napi_poll net/core/dev.c:6594 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6727 __do_softirq+0xc1/0x265 kernel/softirq.c:553 do_softirq+0x5e/0x90 kernel/softirq.c:454 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381 __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+0x108/0x110 net/core/sock.c:3530 dccp_close+0x807/0x9c0 net/dccp/proto.c:1062 inet_release+0xc9/0xf0 net/ipv4/af_inet.c:433 __sock_release net/socket.c:659 [inline] sock_close+0x64/0x140 net/socket.c:1401 __fput+0x2fd/0x5f0 fs/file_table.c:384 ____fput+0x15/0x20 fs/file_table.c:412 task_work_run+0x135/0x1a0 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x5ff/0x1660 kernel/exit.c:874 do_group_exit+0x141/0x150 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x1f/0x20 kernel/exit.c:1033 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000000022cbd -> 0x0000000000022cbe Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 9933 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-12145-g4a0fc73da97e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 ==================================================================