vcan0: j1939_tp_rxtimer: 0x0000000070ea65d6: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0x0000000070ea65d6: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. WARNING: CPU: 0 PID: 9 at net/can/j1939/socket.c:182 j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:163 [inline] WARNING: CPU: 0 PID: 9 at net/can/j1939/socket.c:182 j1939_sk_queue_activate_next+0x2a9/0x3e0 net/can/j1939/socket.c:206 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x113/0x167 lib/dump_stack.c:113 panic+0x223/0x4dc kernel/panic.c:219 __warn.cold.10+0x1b/0x37 kernel/panic.c:576 report_bug+0x1a4/0x200 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:182 [inline] RIP: 0010:j1939_sk_queue_activate_next+0x2a9/0x3e0 net/can/j1939/socket.c:206 Code: 0b e9 2f fe ff ff e8 f6 66 03 fd c1 e8 1c 83 c0 0a 89 45 d4 eb b4 e8 56 a5 9c fb e9 07 fe ff ff e8 4c a5 9c fb e9 89 fe ff ff <0f> 0b 48 8d be b0 00 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 20 84 RSP: 0018:ffff8880a98bf910 EFLAGS: 00010286 RAX: 00000000fffffff5 RBX: ffff888097d4a6d0 RCX: 0000000000000002 RDX: 1ffffffff10653d4 RSI: ffff888090edbd58 RDI: ffffffff88329ea0 RBP: ffff8880a98bf968 R08: 0000000000000002 R09: fffffbfff134773b R10: fffffbfff134773a R11: ffffffff89a3b9d7 R12: dffffc0000000000 R13: ffff888090edbd40 R14: ffff888097d4a1c0 R15: ffff888097d4a708 j1939_session_deactivate_activate_next+0x1c/0x20 net/can/j1939/transport.c:1042 j1939_xtp_rx_abort_one.cold.18+0x1df/0x33d net/can/j1939/transport.c:1258 j1939_xtp_rx_abort net/can/j1939/transport.c:1269 [inline] j1939_tp_cmd_recv net/can/j1939/transport.c:1940 [inline] j1939_tp_recv+0x4a9/0x780 net/can/j1939/transport.c:1973 j1939_can_recv+0x425/0x590 net/can/j1939/main.c:100 deliver net/can/af_can.c:568 [inline] can_rcv_filter+0x4ff/0x840 net/can/af_can.c:602 can_receive+0x290/0x470 net/can/af_can.c:659 can_rcv+0xd9/0x160 net/can/af_can.c:685 __netif_receive_skb_one_core+0xe9/0x170 net/core/dev.c:5006 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5120 process_backlog+0x1cb/0x670 net/core/dev.c:5951 napi_poll net/core/dev.c:6388 [inline] net_rx_action+0x458/0xe40 net/core/dev.c:6456 __do_softirq+0x262/0x9a8 kernel/softirq.c:292 run_ksoftirqd+0x94/0x100 kernel/softirq.c:603 smpboot_thread_fn+0x55f/0x8b0 kernel/smpboot.c:165 kthread+0x331/0x3f0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..