vcan0: j1939_xtp_rx_dat_one: 0xffff88813df60800: last 15 vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6a5000: should have been completed vcan0: j1939_xtp_rx_dat: no rx connection found vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6a5200: last 00 ================================================================== BUG: KCSAN: data-race in j1939_xtp_rx_dat_one / j1939_xtp_rx_dat_one write to 0xffff88812f6a52ac of 4 bytes by interrupt on cpu 1: j1939_xtp_rx_dat_one+0x892/0x1040 net/can/j1939/transport.c:1875 j1939_xtp_rx_dat net/can/j1939/transport.c:1929 [inline] j1939_tp_recv+0x24a/0xa20 net/can/j1939/transport.c:2123 j1939_can_recv+0x3f9/0x4e0 net/can/j1939/main.c:108 deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x254/0x520 net/can/af_can.c:608 can_receive+0x1a2/0x220 net/can/af_can.c:665 can_rcv+0x9e/0x170 net/can/af_can.c:696 __netif_receive_skb_one_core net/core/dev.c:5351 [inline] __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5465 process_backlog+0x23f/0x3e0 net/core/dev.c:5797 __napi_poll+0x65/0x3f0 net/core/dev.c:6365 napi_poll net/core/dev.c:6432 [inline] net_rx_action+0x29e/0x650 net/core/dev.c:6519 __do_softirq+0x158/0x2de kernel/softirq.c:558 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:921 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164 kthread+0x1bf/0x1e0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 read to 0xffff88812f6a52ac of 4 bytes by interrupt on cpu 0: j1939_xtp_rx_dat_one+0x6e9/0x1040 net/can/j1939/transport.c:1835 j1939_xtp_rx_dat net/can/j1939/transport.c:1929 [inline] j1939_tp_recv+0x24a/0xa20 net/can/j1939/transport.c:2123 j1939_can_recv+0x3f9/0x4e0 net/can/j1939/main.c:108 deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x254/0x520 net/can/af_can.c:608 can_receive+0x1a2/0x220 net/can/af_can.c:665 can_rcv+0x9e/0x170 net/can/af_can.c:696 __netif_receive_skb_one_core net/core/dev.c:5351 [inline] __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5465 process_backlog+0x23f/0x3e0 net/core/dev.c:5797 __napi_poll+0x65/0x3f0 net/core/dev.c:6365 napi_poll net/core/dev.c:6432 [inline] net_rx_action+0x29e/0x650 net/core/dev.c:6519 __do_softirq+0x158/0x2de kernel/softirq.c:558 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:921 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164 kthread+0x1bf/0x1e0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 value changed: 0x000000a5 -> 0x000000a6 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12 Comm: ksoftirqd/0 Tainted: G W 5.17.0-rc8-syzkaller-00003-g56e337f2cf13-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6a5200: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5e00: should have been completed vcan0: j1939_xtp_rx_dat_one: 0xffff88812f6d5a00: should have been completed vcan0: j1939_xtp_rx_abort_one: 0xffff88812f6d5e00: 0x00000: (5) Maximal retransmit request limit reached vcan0: j1939_xtp_rx_abort_one: 0xffff88812f6d5a00: 0x00000: (5) Maximal retransmit request limit reached sd 0:0:1:0: [sda] tag#581 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s sd 0:0:1:0: [sda] tag#581 CDB: opcode=0xe5 (vendor) sd 0:0:1:0: [sda] tag#581 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c sd 0:0:1:0: [sda] tag#581 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d sd 0:0:1:0: [sda] tag#581 CDB[20]: ba sd 0:0:1:0: [sda] tag#583 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s sd 0:0:1:0: [sda] tag#583 CDB: opcode=0xe5 (vendor) sd 0:0:1:0: [sda] tag#583 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c sd 0:0:1:0: [sda] tag#583 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d sd 0:0:1:0: [sda] tag#583 CDB[20]: ba sd 0:0:1:0: [sda] tag#584 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s sd 0:0:1:0: [sda] tag#584 CDB: opcode=0xe5 (vendor) sd 0:0:1:0: [sda] tag#584 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c sd 0:0:1:0: [sda] tag#584 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d sd 0:0:1:0: [sda] tag#584 CDB[20]: ba sd 0:0:1:0: [sda] tag#587 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s sd 0:0:1:0: [sda] tag#587 CDB: opcode=0xe5 (vendor) sd 0:0:1:0: [sda] tag#587 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c sd 0:0:1:0: [sda] tag#587 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d sd 0:0:1:0: [sda] tag#587 CDB[20]: ba