vcan0: j1939_tp_rxtimer: 0xffff888031193800: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff888068609400: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 25703 at net/can/j1939/transport.c:1085 j1939_session_deactivate net/can/j1939/transport.c:1085 [inline] WARNING: CPU: 1 PID: 25703 at net/can/j1939/transport.c:1085 j1939_session_deactivate_activate_next net/can/j1939/transport.c:1095 [inline] WARNING: CPU: 1 PID: 25703 at net/can/j1939/transport.c:1085 j1939_xtp_rx_abort_one+0x666/0x790 net/can/j1939/transport.c:1329 Modules linked in: CPU: 1 PID: 25703 Comm: kworker/1:18 Not tainted 5.14.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: rcu_gp srcu_invoke_callbacks RIP: 0010:j1939_session_deactivate net/can/j1939/transport.c:1085 [inline] RIP: 0010:j1939_session_deactivate_activate_next net/can/j1939/transport.c:1095 [inline] RIP: 0010:j1939_xtp_rx_abort_one+0x666/0x790 net/can/j1939/transport.c:1329 Code: e9 88 fa ff ff e8 da 5f 8b f8 4c 89 f7 be 03 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 af 1f 11 fb e8 ba 5f 8b f8 <0f> 0b e9 4b fd ff ff e8 ae 5f 8b f8 0f 0b e9 ca fd ff ff 89 e9 80 RSP: 0018:ffffc90000dc07c0 EFLAGS: 00010246 RAX: ffffffff88f4c4f6 RBX: 0000000000000001 RCX: ffff88802cf30000 RDX: 0000000080000302 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 1ffff1100d0c1280 R08: ffffffff88f4c23a R09: ffffed100d0c1286 R10: ffffed100d0c1286 R11: 0000000000000000 R12: ffff888068609400 R13: 0000000000000009 R14: ffff88802a005070 R15: ffff888068609428 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 000000005f383000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: j1939_xtp_rx_abort net/can/j1939/transport.c:1340 [inline] j1939_tp_cmd_recv+0x374/0x1200 net/can/j1939/transport.c:2065 j1939_tp_recv+0x1f7/0x540 net/can/j1939/transport.c:2098 j1939_can_recv+0x652/0xa10 net/can/j1939/main.c:101 deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x35e/0x800 net/can/af_can.c:608 can_receive+0x2e8/0x410 net/can/af_can.c:665 can_rcv+0xda/0x1f0 net/can/af_can.c:696 __netif_receive_skb_one_core net/core/dev.c:5498 [inline] __netif_receive_skb+0x1d1/0x500 net/core/dev.c:5612 process_backlog+0x4d8/0x940 net/core/dev.c:6492 __napi_poll+0xba/0x4f0 net/core/dev.c:7047 napi_poll net/core/dev.c:7114 [inline] net_rx_action+0x62c/0xf30 net/core/dev.c:7201 __do_softirq+0x372/0x783 kernel/softirq.c:558 do_softirq+0x14a/0x210 kernel/softirq.c:459 __local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:383 srcu_invoke_callbacks+0x1bc/0x400 kernel/rcu/srcutree.c:1273 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295