vxcan0: j1939_xtp_rx_abort_one: 0xffff888031b55400: 0x00000: (250) Any other reason (if a Connection Abort reason is identified that is not listed in the table use code 250)
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 7329 at lib/refcount.c:28 refcount_warn_saturate+0x15a/0x1d0 lib/refcount.c:28
Modules linked in:
CPU: 1 UID: 0 PID: 7329 Comm: syz.5.302 Not tainted 6.12.0-syzkaller-00239-gc6d64479d609 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:refcount_warn_saturate+0x15a/0x1d0 lib/refcount.c:28
Code: 00 d5 60 8c e8 c7 b8 97 fc 90 0f 0b 90 90 eb 99 e8 4b c9 d6 fc c6 05 1d f9 48 0b 01 90 48 c7 c7 60 d5 60 8c e8 a7 b8 97 fc 90 <0f> 0b 90 90 e9 76 ff ff ff e8 28 c9 d6 fc c6 05 f7 f8 48 0b 01 90
RSP: 0018:ffffc90000a18740 EFLAGS: 00010246
RAX: f90921d704c1bd00 RBX: ffff88801fbf8864 RCX: ffff88802f72bc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000003 R08: ffffffff8155e312 R09: 1ffff92000143084
R10: dffffc0000000000 R11: fffff52000143085 R12: ffff888031b55468
R13: ffff88801fbf8864 R14: 1ffff1100636aa98 R15: ffff888031b55400
FS:  00007f53f65676c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2f0469 CR3: 00000000718ac000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 kfree_skb_reason include/linux/skbuff.h:1262 [inline]
 kfree_skb include/linux/skbuff.h:1271 [inline]
 j1939_session_destroy net/can/j1939/transport.c:282 [inline]
 __j1939_session_release net/can/j1939/transport.c:294 [inline]
 kref_put include/linux/kref.h:65 [inline]
 j1939_session_put+0x1ed/0x440 net/can/j1939/transport.c:299
 j1939_xtp_rx_abort net/can/j1939/transport.c:1362 [inline]
 j1939_tp_cmd_recv net/can/j1939/transport.c:2128 [inline]
 j1939_tp_recv+0x92a/0x1050 net/can/j1939/transport.c:2161
 j1939_can_recv+0x732/0xb20 net/can/j1939/main.c:108
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0x35b/0x7f0 net/can/af_can.c:606
 can_receive+0x31c/0x470 net/can/af_can.c:663
 can_rcv+0x144/0x260 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5670 [inline]
 __netif_receive_skb+0x2e2/0x650 net/core/dev.c:5783
 process_backlog+0x662/0x15b0 net/core/dev.c:6115
 __napi_poll+0xcd/0x490 net/core/dev.c:6779
 napi_poll net/core/dev.c:6848 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6970
 handle_softirqs+0x2c7/0x980 kernel/softirq.c:554
 do_softirq+0x11b/0x1e0 kernel/softirq.c:455
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
 __dev_queue_xmit+0x171d/0x3ed0 net/core/dev.c:4459
 dev_queue_xmit include/linux/netdevice.h:3094 [inline]
 __netlink_deliver_tap_skb net/netlink/af_netlink.c:307 [inline]
 __netlink_deliver_tap+0x54d/0x7c0 net/netlink/af_netlink.c:325
 netlink_deliver_tap+0x19d/0x1b0 net/netlink/af_netlink.c:338
 netlink_deliver_tap_kernel net/netlink/af_netlink.c:347 [inline]
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x7c4/0x990 net/netlink/af_netlink.c:1347
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1891
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg+0x223/0x270 net/socket.c:726
 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2581
 ___sys_sendmsg net/socket.c:2635 [inline]
 __sys_sendmsg+0x269/0x350 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f53f577e759
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f53f6567038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f53f5935f80 RCX: 00007f53f577e759
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00007f53f57f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f53f5935f80 R15: 00007ffdf661a538
 </TASK>