vxcan0: j1939_xtp_rx_abort_one: 0xffff8880453cec00: 0x00000: (1) Already in one or more connection managed sessions and cannot support another. ------------[ cut here ]------------ WARNING: CPU: 3 PID: 34 at net/can/j1939/transport.c:1656 j1939_xtp_rx_rts_session_new net/can/j1939/transport.c:1656 [inline] WARNING: CPU: 3 PID: 34 at net/can/j1939/transport.c:1656 j1939_xtp_rx_rts+0x148a/0x17d0 net/can/j1939/transport.c:1735 Modules linked in: CPU: 3 PID: 34 Comm: ksoftirqd/3 Not tainted 6.9.0-syzkaller-08284-gea5f6ad9ad96 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:j1939_xtp_rx_rts_session_new net/can/j1939/transport.c:1656 [inline] RIP: 0010:j1939_xtp_rx_rts+0x148a/0x17d0 net/can/j1939/transport.c:1735 Code: fb ff ff bd 02 00 00 00 e9 72 fe ff ff e8 fe aa b8 f7 be 01 00 00 00 48 89 ef e8 b1 76 ab fa e9 76 fb ff ff e8 e7 aa b8 f7 90 <0f> 0b 90 48 8d 83 c0 00 00 00 4c 8d b3 c2 00 00 00 48 89 44 24 10 RSP: 0018:ffffc90000908940 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8880453ce400 RCX: ffffffff89d52b30 RDX: ffff88801928c880 RSI: ffffffff89d53199 RDI: 0000000000000005 RBP: 00000000fffffff5 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffff5 R11: 0000000000000002 R12: ffff888015f48000 R13: ffff8880453ce4dc R14: 0000000000000001 R15: 0000000000002447 FS: 0000000000000000(0000) GS:ffff88806b300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30624000 CR3: 000000003cd9e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: j1939_tp_cmd_recv net/can/j1939/transport.c:2057 [inline] j1939_tp_recv+0x36a/0xf50 net/can/j1939/transport.c:2144 j1939_can_recv+0x78f/0xa70 net/can/j1939/main.c:112 deliver net/can/af_can.c:572 [inline] can_rcv_filter+0x2a8/0x900 net/can/af_can.c:606 can_receive+0x320/0x5c0 net/can/af_can.c:663 can_rcv+0x1e0/0x280 net/can/af_can.c:687 __netif_receive_skb_one_core+0x1b1/0x1e0 net/core/dev.c:5624 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5738 process_backlog+0x133/0x760 net/core/dev.c:6067 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6721 napi_poll net/core/dev.c:6790 [inline] net_rx_action+0x9b6/0xf10 net/core/dev.c:6906 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5283 Code: a9 0a 00 00 44 8b 0d 27 cb 85 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 d9 b9 36 00 fb 65 48 8b 1d b0 8f a5 7e <48> 8d bb f8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc900008dfc78 EFLAGS: 00000206 RAX: 0000000000087187 RBX: ffff88801928c880 RCX: 1ffffffff1fc7391 RDX: 0000000000000000 RSI: ffffffff8b2ca9a0 RDI: ffffffff8b8f8700 RBP: ffffc900008dfcc0 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8fe3df17 R11: 0000000000000000 R12: ffff88806b33f7b8 R13: ffff88803fdcc880 R14: 0000000000000000 R15: ffff88806b23ea40 context_switch kernel/sched/core.c:5412 [inline] __schedule+0xf1d/0x5d00 kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6838 smpboot_thread_fn+0x2d5/0xa10 kernel/smpboot.c:160 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ---------------- Code disassembly (best guess): 0: a9 0a 00 00 44 test $0x4400000a,%eax 5: 8b 0d 27 cb 85 0e mov 0xe85cb27(%rip),%ecx # 0xe85cb32 b: 45 85 c9 test %r9d,%r9d e: 0f 85 c0 01 00 00 jne 0x1d4 14: 48 89 df mov %rbx,%rdi 17: e8 ae f8 ff ff call 0xfffff8ca 1c: e8 d9 b9 36 00 call 0x36b9fa 21: fb sti 22: 65 48 8b 1d b0 8f a5 mov %gs:0x7ea58fb0(%rip),%rbx # 0x7ea58fda 29: 7e * 2a: 48 8d bb f8 15 00 00 lea 0x15f8(%rbx),%rdi <-- trapping instruction 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 89 fa mov %rdi,%rdx 3e: 48 rex.W 3f: c1 .byte 0xc1