================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff888101f50978 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x221/0x490 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:5493 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5607 process_backlog+0x21f/0x380 net/core/dev.c:5935 __napi_poll+0x60/0x3b0 net/core/dev.c:6498 napi_poll net/core/dev.c:6565 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6698 __do_softirq+0xc1/0x265 kernel/softirq.c:571 run_ksoftirqd+0x17/0x20 kernel/softirq.c:939 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164 kthread+0x1d7/0x210 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 read-write to 0xffff888101f50978 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x221/0x490 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:5493 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5607 process_backlog+0x21f/0x380 net/core/dev.c:5935 __napi_poll+0x60/0x3b0 net/core/dev.c:6498 napi_poll net/core/dev.c:6565 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6698 __do_softirq+0xc1/0x265 kernel/softirq.c:571 run_ksoftirqd+0x17/0x20 kernel/softirq.c:939 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164 kthread+0x1d7/0x210 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 value changed: 0x00000000000003a1 -> 0x00000000000003a2 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 6.4.0-rc7-syzkaller-00234-g547cc9be86f4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 ================================================================== vcan0: j1939_tp_rxtimer: 0xffff888139c2a200: rx timeout, send abort vcan0: j1939_tp_rxtimer: 0xffff888139b14600: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888139c2a200: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0xffff888139b14600: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_tp_rxtimer: 0xffff888139b14600: rx timeout, send abort vcan0: j1939_tp_rxtimer: 0xffff888139c2a200: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888139b14600: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0xffff888139c2a200: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_tp_rxtimer: 0xffff888139a86e00: rx timeout, send abort vcan0: j1939_tp_rxtimer: 0xffff8881082e2a00: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888139a86e00: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0xffff8881082e2a00: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_tp_rxtimer: 0xffff888139ece800: rx timeout, send abort vcan0: j1939_tp_rxtimer: 0xffff888139b33e00: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888139ece800: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0xffff888139b33e00: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_tp_rxtimer: 0xffff888139b33e00: rx timeout, send abort vcan0: j1939_tp_rxtimer: 0xffff888139ece800: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888139b33e00: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0xffff888139ece800: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_tp_rxtimer: 0xffff888139a57e00: rx timeout, send abort vcan0: j1939_tp_rxtimer: 0xffff888139e3f400: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888139a57e00: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0xffff888139e3f400: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_tp_rxtimer: 0xffff888139925800: rx timeout, send abort vcan0: j1939_tp_rxtimer: 0xffff888139952a00: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888139925800: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0xffff888139952a00: 0x00000: (3) A timeout occurred and this is the connection abort to close the session.