vcan0: j1939_tp_rxtimer: 0xffff88808203e400: rx timeout, send abort vcan0: j1939_xtp_rx_abort_one: 0xffff88808203e400: 0x40000: (3) A timeout occurred and this is the connection abort to close the session. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4416 at net/can/j1939/transport.c:1098 j1939_session_deactivate net/can/j1939/transport.c:1098 [inline] WARNING: CPU: 1 PID: 4416 at net/can/j1939/transport.c:1098 j1939_session_deactivate_activate_next+0x95/0xd3 net/can/j1939/transport.c:1108 Modules linked in: CPU: 1 PID: 4416 Comm: klogd Not tainted 6.2.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:j1939_session_deactivate net/can/j1939/transport.c:1098 [inline] RIP: 0010:j1939_session_deactivate_activate_next+0x95/0xd3 net/can/j1939/transport.c:1108 Code: 03 38 d0 7c 0c 84 d2 74 08 4c 89 ef e8 bc 5b cc f7 8b 5d 28 bf 01 00 00 00 89 de e8 3d 56 7e f7 83 fb 01 77 07 e8 83 59 7e f7 <0f> 0b e8 7c 59 7e f7 48 89 ef e8 24 51 c8 fe 4c 89 e7 89 c3 e8 6a RSP: 0018:ffffc900001e0a88 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100 RDX: ffff88807e6f0000 RSI: ffffffff8a03092d RDI: 0000000000000005 RBP: ffff88808203e400 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888084511070 R13: ffff88808203e428 R14: ffffffff8b7023c0 R15: 0000000000000003 FS: 00007f25b474b800(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020404030 CR3: 0000000026288000 CR4: 0000000000350ee0 Call Trace: j1939_xtp_rx_abort_one.cold+0x301/0x403 net/can/j1939/transport.c:1348 j1939_xtp_rx_abort net/can/j1939/transport.c:1359 [inline] j1939_tp_cmd_recv net/can/j1939/transport.c:2108 [inline] j1939_tp_recv+0xb63/0xcd0 net/can/j1939/transport.c:2141 j1939_can_recv net/can/j1939/main.c:112 [inline] j1939_can_recv+0x78e/0xa30 net/can/j1939/main.c:38 deliver net/can/af_can.c:572 [inline] can_rcv_filter+0x5d4/0x8d0 net/can/af_can.c:606 can_receive+0x31d/0x580 net/can/af_can.c:663 can_rcv+0x1e1/0x230 net/can/af_can.c:687 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5482 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5596 process_backlog+0x3e4/0x810 net/core/dev.c:5924 __napi_poll+0xb8/0x770 net/core/dev.c:6485 napi_poll net/core/dev.c:6552 [inline] net_rx_action+0xa00/0xde0 net/core/dev.c:6663 __do_softirq+0x1fb/0xadc kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x20 kernel/kcov.c:304 Code: 00 00 f3 0f 1e fa 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 b8 fe ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 9a fe ff ff 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc9000315f9b8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff81668e2f RDX: ffff88807e6f0000 RSI: 0000000000000002 RDI: 0000000000000001 RBP: ffffc9000315fb28 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000003 R11: 0000000000000000 R12: 1ffff9200062bf38 R13: 0000000000001aa3 R14: 0000000000000003 R15: dffffc0000000000 desc_read_finalized_seq+0xaf/0x1c0 kernel/printk/printk_ringbuffer.c:1771 prb_read kernel/printk/printk_ringbuffer.c:1811 [inline] _prb_read_valid+0x1cd/0x710 kernel/printk/printk_ringbuffer.c:1891 prb_read_valid+0x79/0xa0 kernel/printk/printk_ringbuffer.c:1940 syslog_print+0x3f0/0x580 kernel/printk/printk.c:1626 do_syslog.part.0+0x246/0x630 kernel/printk/printk.c:1762 do_syslog kernel/printk/printk.c:1852 [inline] __do_sys_syslog kernel/printk/printk.c:1854 [inline] __se_sys_syslog kernel/printk/printk.c:1852 [inline] __x64_sys_syslog+0x9b/0xd0 kernel/printk/printk.c:1852 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f25b48e68b7 Code: 73 01 c3 48 8b 0d c1 05 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 05 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007fffd74125f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000067 RAX: ffffffffffffffda RBX: 00007f25b4a73490 RCX: 00007f25b48e68b7 RDX: 00000000000003ff RSI: 00007f25b4a73490 RDI: 0000000000000002 RBP: 0000000000000000 R08: 0000000000000007 R09: 000055be96d3cc10 R10: 0000000000004000 R11: 0000000000000206 R12: 00007f25b4a73490 R13: 00007f25b4a734df R14: 00007f25b4a734df R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: f3 0f 1e fa endbr64 6: 48 8b 0c 24 mov (%rsp),%rcx a: 0f b7 d6 movzwl %si,%edx d: 0f b7 f7 movzwl %di,%esi 10: bf 03 00 00 00 mov $0x3,%edi 15: e9 b8 fe ff ff jmpq 0xfffffed2 1a: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 21: 00 22: f3 0f 1e fa endbr64 26: 48 8b 0c 24 mov (%rsp),%rcx * 2a: 89 f2 mov %esi,%edx <-- trapping instruction 2c: 89 fe mov %edi,%esi 2e: bf 05 00 00 00 mov $0x5,%edi 33: e9 9a fe ff ff jmpq 0xfffffed2 38: 66 data16 39: 2e cs 3a: 0f .byte 0xf 3b: 1f (bad) 3c: 84 00 test %al,(%rax)