vcan0: j1939_xtp_rx_abort_one: 0x00000000e528dee4: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0x00000000d897de31: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. vcan0: j1939_xtp_rx_abort_one: 0x00000000da8e5161: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. ================================================================== BUG: KCSAN: data-race in j1939_xtp_rx_dat_one / j1939_xtp_rx_dat_one read to 0xffff8880b9608480 of 1 bytes by interrupt on cpu 0: j1939_xtp_rx_dat_one+0x77/0x5d0 net/can/j1939/transport.c:1728 j1939_xtp_rx_dat net/can/j1939/transport.c:1830 [inline] j1939_tp_recv+0x304/0x660 net/can/j1939/transport.c:1995 j1939_can_recv+0x34e/0x4b0 net/can/j1939/main.c:101 deliver net/can/af_can.c:569 [inline] can_rcv_filter+0x1c7/0x5b0 net/can/af_can.c:603 can_receive+0x189/0x230 net/can/af_can.c:660 can_rcv+0xbd/0x120 net/can/af_can.c:686 __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5150 __netif_receive_skb+0x37/0xf0 net/core/dev.c:5264 process_backlog+0x207/0x4b0 net/core/dev.c:6095 napi_poll net/core/dev.c:6532 [inline] net_rx_action+0x3ae/0xa90 net/core/dev.c:6600 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 write to 0xffff8880b9608480 of 1 bytes by interrupt on cpu 1: j1939_xtp_rx_dat_one+0x3d5/0x5d0 net/can/j1939/transport.c:1795 j1939_xtp_rx_dat net/can/j1939/transport.c:1830 [inline] j1939_tp_recv+0x304/0x660 net/can/j1939/transport.c:1995 j1939_can_recv+0x34e/0x4b0 net/can/j1939/main.c:101 deliver net/can/af_can.c:569 [inline] can_rcv_filter+0x1c7/0x5b0 net/can/af_can.c:603 can_receive+0x189/0x230 net/can/af_can.c:660 can_rcv+0xbd/0x120 net/can/af_can.c:686 __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5150 __netif_receive_skb+0x37/0xf0 net/core/dev.c:5264 process_backlog+0x207/0x4b0 net/core/dev.c:6095 napi_poll net/core/dev.c:6532 [inline] net_rx_action+0x3ae/0xa90 net/core/dev.c:6600 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================