vcan0: j1939_xtp_rx_abort_one: 0xffff88807d06f800: 0x00000: (1) Already in one or more connection managed sessions and cannot support another. vcan0: j1939_xtp_rx_abort_one: 0xffff88806eb92000: 0x00000: (1) Already in one or more connection managed sessions and cannot support another. vcan0: j1939_xtp_rx_abort_one: 0xffff8880661c2800: 0x00000: (1) Already in one or more connection managed sessions and cannot support another. vcan0: j1939_xtp_rx_abort_one: 0xffff88807bc6dc00: 0x00000: (1) Already in one or more connection managed sessions and cannot support another. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 13 at net/can/j1939/transport.c:1090 j1939_session_deactivate+0xaf/0xd0 net/can/j1939/transport.c:1090 Modules linked in: CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:j1939_session_deactivate+0xaf/0xd0 net/can/j1939/transport.c:1090 Code: fd 01 76 21 e8 d2 50 5f f9 48 89 ef e8 2a fc ff ff 4c 89 e7 41 89 c5 e8 cf a0 21 01 44 89 e8 5d 41 5c 41 5d c3 e8 b1 50 5f f9 <0f> 0b eb d6 4c 89 ef e8 f5 a5 a6 f9 eb b5 48 89 ef e8 fb a5 a6 f9 RSP: 0018:ffffc90000d27990 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100 RDX: ffff888011ef8000 RSI: ffffffff88179c6f RDI: 0000000000000003 RBP: ffff88807bc6dc00 R08: 0000000000000001 R09: ffff88807bc6dc2b R10: ffffffff88179c43 R11: 000000000000001d R12: ffff888069a6d070 R13: 0000000000000001 R14: ffff8880661c3818 R15: ffffffff8aa05fc0 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f24f80ba018 CR3: 00000000733c3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: j1939_session_deactivate_activate_next+0x12/0x35 net/can/j1939/transport.c:1100 j1939_xtp_rx_abort_one.cold+0x20b/0x33c net/can/j1939/transport.c:1340 j1939_xtp_rx_abort net/can/j1939/transport.c:1351 [inline] j1939_tp_cmd_recv net/can/j1939/transport.c:2089 [inline] j1939_tp_recv+0x8f4/0xb40 net/can/j1939/transport.c:2122 j1939_can_recv+0x6d7/0x930 net/can/j1939/main.c:101 deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x5d4/0x8d0 net/can/af_can.c:608 can_receive+0x31d/0x580 net/can/af_can.c:665 can_rcv+0x120/0x1c0 net/can/af_can.c:696 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5436 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5550 process_backlog+0x2a5/0x6c0 net/core/dev.c:6427 __napi_poll+0xaf/0x440 net/core/dev.c:6986 napi_poll net/core/dev.c:7053 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7140 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 run_ksoftirqd kernel/softirq.c:920 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295