================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff8881036dc588 of 8 bytes by interrupt on cpu 0: can_receive+0x4e/0x1f0 net/can/af_can.c:650 canfd_rcv+0xe7/0x180 net/can/af_can.c:703 __netif_receive_skb_one_core net/core/dev.c:5893 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:6006 process_backlog+0x22e/0x440 net/core/dev.c:6354 __napi_poll+0x63/0x3c0 net/core/dev.c:7188 napi_poll net/core/dev.c:7257 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7379 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x4ae/0x520 kernel/kthread.c:464 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff8881036dc588 of 8 bytes by interrupt on cpu 1: can_receive+0x4e/0x1f0 net/can/af_can.c:650 canfd_rcv+0xe7/0x180 net/can/af_can.c:703 __netif_receive_skb_one_core net/core/dev.c:5893 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:6006 process_backlog+0x22e/0x440 net/core/dev.c:6354 __napi_poll+0x63/0x3c0 net/core/dev.c:7188 napi_poll net/core/dev.c:7257 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7379 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x4ae/0x520 kernel/kthread.c:464 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000000000002ad -> 0x00000000000002ae Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.14.0-rc6-syzkaller-00003-g4d872d51bc9d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ==================================================================