vxcan0: j1939_xtp_rx_abort_one: 0x00000000269c61a3: 0x40000: (3) A timeout occurred and this is the connection abort to close the session.
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 9561 at lib/refcount.c:28 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
Modules linked in:

CPU: 1 UID: 0 PID: 9561 Comm: syz-executor Not tainted 6.12.0-rc1-syzkaller-g3eddb108abe3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
lr : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
sp : ffff8000800176d0
x29: ffff8000800176d0 x28: 0000000000000001 x27: 00000000ffffffff
x26: 1fffe0001978f798 x25: dfff800000000000 x24: 0000000000000000
x23: ffff0000d5015d64 x22: ffff80008a57d30c x21: 0000000000000003
x20: ffff0000d5015d64 x19: ffff800092a70000 x18: ffff800080016ef8
x17: 0000000000000000 x16: ffff800080355404 x15: 0000000000000001
x14: 1ffff00011f1383c x13: 0000000000000000 x12: 0000000000000003
x11: 0000000000000103 x10: 0000000000ff0100 x9 : 241e58862dd15800
x8 : 241e58862dd15800 x7 : ffff8000803948bc x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff0000edacbc80 x1 : 0000000100000101 x0 : 0000000000000000
Call trace:
 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
 __refcount_sub_and_test include/linux/refcount.h:275 [inline]
 __refcount_dec_and_test include/linux/refcount.h:307 [inline]
 refcount_dec_and_test include/linux/refcount.h:325 [inline]
 skb_unref include/linux/skbuff.h:1232 [inline]
 __sk_skb_reason_drop net/core/skbuff.c:1213 [inline]
 sk_skb_reason_drop+0x210/0x43c net/core/skbuff.c:1241
 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+0x1c8/0x460 net/can/j1939/transport.c:299
 j1939_xtp_rx_abort_one+0xd4/0x358 net/can/j1939/transport.c:1354
 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+0x814/0xe14 net/can/j1939/transport.c:2161
 j1939_can_recv+0x5bc/0x934 net/can/j1939/main.c:108
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0x308/0x714 net/can/af_can.c:606
 can_receive+0x328/0x488 net/can/af_can.c:663
 can_rcv+0x128/0x240 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5662 [inline]
 __netif_receive_skb+0x18c/0x3c8 net/core/dev.c:5775
 process_backlog+0x640/0x123c net/core/dev.c:6107
 __napi_poll+0xb4/0x3fc net/core/dev.c:6771
 napi_poll net/core/dev.c:6840 [inline]
 net_rx_action+0x6a8/0xf4c net/core/dev.c:6962
 handle_softirqs+0x2e0/0xbf8 kernel/softirq.c:554
 __do_softirq+0x14/0x20 kernel/softirq.c:588
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86
 do_softirq+0x90/0xf8 kernel/softirq.c:455
 __local_bh_enable_ip+0x288/0x44c kernel/softirq.c:382
 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33
 put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:244 [inline]
 fpsimd_restore_current_state+0x64/0xec arch/arm64/kernel/fpsimd.c:1810
 do_notify_resume+0x114/0x1f4 arch/arm64/kernel/entry-common.c:154
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 asm_exit_to_user_mode+0x78/0x8c arch/arm64/kernel/entry-common.c:185
 ret_from_fork+0x1c/0x20 arch/arm64/kernel/entry.S:863
irq event stamp: 97
hardirqs last  enabled at (96): [<ffff80008b48391c>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
hardirqs last  enabled at (96): [<ffff80008b48391c>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95
hardirqs last disabled at (97): [<ffff80008b481418>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (14): [<ffff8000800307f8>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (15): [<ffff800080020db4>] __do_softirq+0x14/0x20 kernel/softirq.c:588
---[ end trace 0000000000000000 ]---