KCSAN: data-race in can_send / can

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in can_send / can_send (4) can	6	1311	677d	1562d	0/29	auto-obsoleted due to no activity on 2024/10/25 17:08
upstream	KCSAN: data-race in can_send / can_send (2) can	6	1	2351d	2351d	0/29	auto-closed as invalid on 2020/05/07 07:35
upstream	KCSAN: data-race in can_send / can_send (5) can	6	56	504d	514d	28/29	fixed on 2025/06/10 16:19
upstream	KCSAN: data-race in can_send / can_send can	6	1	2451d	2451d	0/29	auto-closed as invalid on 2020/01/28 10:46

vcan0: j1939_tp_rxtimer: 0x00000000f768a425: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0x00000000f768a425: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff888022adbf90 of 8 bytes by interrupt on cpu 0: can_send+0x3fd/0x490 net/can/af_can.c:290 j1939_send_one+0x189/0x1b0 net/can/j1939/main.c:340 j1939_tp_tx_dat net/can/j1939/transport.c:623 [inline] j1939_session_tx_dat net/can/j1939/transport.c:813 [inline] j1939_xtp_txnext_transmiter net/can/j1939/transport.c:869 [inline] j1939_tp_txtimer+0x147d/0x2ad0 net/can/j1939/transport.c:1117 __run_hrtimer+0x133/0x420 kernel/time/hrtimer.c:1519 __hrtimer_run_queues kernel/time/hrtimer.c:1583 [inline] hrtimer_run_softirq+0x1c9/0x2a0 kernel/time/hrtimer.c:1600 __do_softirq+0x12c/0x2b1 kernel/softirq.c:298 run_ksoftirqd+0x13/0x20 kernel/softirq.c:653 smpboot_thread_fn+0x34f/0x520 kernel/smpboot.c:165 kthread+0x1fa/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 read-write to 0xffff888022adbf90 of 8 bytes by interrupt on cpu 1: can_send+0x3fd/0x490 net/can/af_can.c:290 j1939_send_one+0x189/0x1b0 net/can/j1939/main.c:340 j1939_tp_tx_dat net/can/j1939/transport.c:623 [inline] j1939_session_tx_dat net/can/j1939/transport.c:813 [inline] j1939_xtp_txnext_transmiter net/can/j1939/transport.c:869 [inline] j1939_tp_txtimer+0x147d/0x2ad0 net/can/j1939/transport.c:1117 __run_hrtimer+0x133/0x420 kernel/time/hrtimer.c:1519 __hrtimer_run_queues kernel/time/hrtimer.c:1583 [inline] hrtimer_run_softirq+0x1c9/0x2a0 kernel/time/hrtimer.c:1600 __do_softirq+0x12c/0x2b1 kernel/softirq.c:298 run_ksoftirqd+0x13/0x20 kernel/softirq.c:653 smpboot_thread_fn+0x34f/0x520 kernel/smpboot.c:165 kthread+0x1fa/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================