vcan0: j1939_tp_rxtimer: 0x000000009832a0a3: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0x000000009832a0a3: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16 at net/can/j1939/socket.c:180 j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:180 [inline] WARNING: CPU: 1 PID: 16 at net/can/j1939/socket.c:180 j1939_sk_queue_activate_next+0x2ae/0x390 net/can/j1939/socket.c:204 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc8-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+0x1fb/0x318 lib/dump_stack.c:118 panic+0x264/0x7a9 kernel/panic.c:221 __warn+0x20e/0x210 kernel/panic.c:582 report_bug+0x1b6/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0xd7/0x440 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:180 [inline] RIP: 0010:j1939_sk_queue_activate_next+0x2ae/0x390 net/can/j1939/socket.c:204 Code: 4c 39 f8 4c 8d 60 e8 b8 00 00 00 00 4c 0f 44 e0 4d 85 e4 0f 84 a0 00 00 00 4c 89 e7 e8 eb 67 00 00 85 c0 74 43 e8 42 12 c3 fa <0f> 0b 4c 89 e9 4d 8d ac 24 c8 00 00 00 4c 89 e8 48 c1 e8 03 0f b6 RSP: 0018:ffff8880a98f7908 EFLAGS: 00010206 RAX: ffffffff86b0648e RBX: 1ffff1101361c2a9 RCX: ffff8880a98de440 RDX: 0000000080000301 RSI: 0000000000000008 RDI: ffff8880a98dec84 RBP: ffff8880a98f7948 R08: ffff8880a98dec98 R09: fffffbfff12bc2b4 R10: fffffbfff12bc2b4 R11: 0000000000000000 R12: ffff88809544bc00 R13: dffffc0000000000 R14: ffff88809b0e1510 R15: ffff88809b0e1548 j1939_session_deactivate_activate_next net/can/j1939/transport.c:1046 [inline] j1939_xtp_rx_abort_one+0x344/0x3f0 net/can/j1939/transport.c:1275 j1939_xtp_rx_abort net/can/j1939/transport.c:1286 [inline] j1939_tp_cmd_recv net/can/j1939/transport.c:1972 [inline] j1939_tp_recv+0x633/0xb80 net/can/j1939/transport.c:2005 j1939_can_recv+0x463/0x7f0 net/can/j1939/main.c:101 deliver net/can/af_can.c:569 [inline] can_rcv_filter+0x3c0/0x8b0 net/can/af_can.c:603 can_receive+0x2ac/0x3b0 net/can/af_can.c:660 can_rcv+0xe4/0x220 net/can/af_can.c:686 __netif_receive_skb_one_core net/core/dev.c:4929 [inline] __netif_receive_skb+0x136/0x370 net/core/dev.c:5043 process_backlog+0x4d8/0x930 net/core/dev.c:5874 napi_poll net/core/dev.c:6311 [inline] net_rx_action+0x5ef/0x10d0 net/core/dev.c:6379 __do_softirq+0x333/0x7c4 arch/x86/include/asm/paravirt.h:766 run_ksoftirqd+0x64/0xf0 kernel/softirq.c:603 smpboot_thread_fn+0x5b3/0x9a0 kernel/smpboot.c:165 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..