vxcan1: j1939_tp_rxtimer: 0x850ce900: rx timeout, send abort
vxcan1: j1939_xtp_rx_abort_one: 0x850ce900: 0x00000: (3) A timeout occurred and this is the connection abort to close the session.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3088 at lib/refcount.c:28 refcount_warn_saturate+0x13c/0x174 lib/refcount.c:28
refcount_t: underflow; use-after-free.
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 3088 Comm: syz-executor Not tainted 6.12.0-rc6-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: frame pointer underflow
[<8199c7f8>] (dump_backtrace) from [<8199c8f4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f44 r5:00000000 r4:8203db14
[<8199c8dc>] (show_stack) from [<819bad88>] (__dump_stack lib/dump_stack.c:94 [inline])
[<8199c8dc>] (show_stack) from [<819bad88>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819bad34>] (dump_stack_lvl) from [<819badc8>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82870d18
[<819badb0>] (dump_stack) from [<8199d420>] (panic+0x120/0x374 kernel/panic.c:354)
[<8199d300>] (panic) from [<80242118>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<8199d300>] (panic) from [<80242118>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:82025ee8 r0:8202d950
 r7:80840670
[<802420a4>] (check_panic_on_warn) from [<8024227c>] (__warn+0x80/0x188 kernel/panic.c:748)
[<802421fc>] (__warn) from [<8024256c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783)
 r8:00000009 r7:8208c310 r6:df805c3c r5:8412d400 r4:00000000
[<80242388>] (warn_slowpath_fmt) from [<80840670>] (refcount_warn_saturate+0x13c/0x174 lib/refcount.c:28)
 r10:ddde50c8 r9:00000003 r8:00000001 r7:00000000 r6:81829ec4 r5:00000002
 r4:83e6e240
[<80840534>] (refcount_warn_saturate) from [<8149b980>] (__refcount_sub_and_test include/linux/refcount.h:275 [inline])
[<80840534>] (refcount_warn_saturate) from [<8149b980>] (__refcount_dec_and_test include/linux/refcount.h:307 [inline])
[<80840534>] (refcount_warn_saturate) from [<8149b980>] (refcount_dec_and_test include/linux/refcount.h:325 [inline])
[<80840534>] (refcount_warn_saturate) from [<8149b980>] (skb_unref include/linux/skbuff.h:1232 [inline])
[<80840534>] (refcount_warn_saturate) from [<8149b980>] (__sk_skb_reason_drop net/core/skbuff.c:1213 [inline])
[<80840534>] (refcount_warn_saturate) from [<8149b980>] (sk_skb_reason_drop+0x1d8/0x248 net/core/skbuff.c:1241)
[<8149b7a8>] (sk_skb_reason_drop) from [<81829ec4>] (kfree_skb_reason include/linux/skbuff.h:1262 [inline])
[<8149b7a8>] (sk_skb_reason_drop) from [<81829ec4>] (kfree_skb include/linux/skbuff.h:1271 [inline])
[<8149b7a8>] (sk_skb_reason_drop) from [<81829ec4>] (j1939_session_destroy+0x78/0x200 net/can/j1939/transport.c:282)
 r9:00000003 r8:00000001 r7:84bd881c r6:850ce950 r5:850ce900 r4:83e6e240
[<81829e4c>] (j1939_session_destroy) from [<8182a6b0>] (__j1939_session_release net/can/j1939/transport.c:294 [inline])
[<81829e4c>] (j1939_session_destroy) from [<8182a6b0>] (kref_put include/linux/kref.h:65 [inline])
[<81829e4c>] (j1939_session_destroy) from [<8182a6b0>] (j1939_session_put net/can/j1939/transport.c:299 [inline])
[<81829e4c>] (j1939_session_destroy) from [<8182a6b0>] (j1939_xtp_rx_abort_one+0xbc/0x2a4 net/can/j1939/transport.c:1354)
 r6:84bd8000 r5:850ce900 r4:83e6e600
[<8182a5f4>] (j1939_xtp_rx_abort_one) from [<8182d468>] (j1939_xtp_rx_abort net/can/j1939/transport.c:1362 [inline])
[<8182a5f4>] (j1939_xtp_rx_abort_one) from [<8182d468>] (j1939_tp_cmd_recv net/can/j1939/transport.c:2128 [inline])
[<8182a5f4>] (j1939_xtp_rx_abort_one) from [<8182d468>] (j1939_tp_recv+0x4c4/0x530 net/can/j1939/transport.c:2161)
 r9:00000040 r8:83d30250 r7:84bd8000 r6:84bd8008 r5:84bd8000 r4:83e6e600
[<8182cfa4>] (j1939_tp_recv) from [<81826e30>] (j1939_can_recv+0x1e4/0x2dc net/can/j1939/main.c:108)
 r7:84bd8000 r6:84bd8008 r5:84bd8810 r4:83e6e600
[<81826c4c>] (j1939_can_recv) from [<8181cc00>] (deliver net/can/af_can.c:572 [inline])
[<81826c4c>] (j1939_can_recv) from [<8181cc00>] (can_rcv_filter+0x9c/0x218 net/can/af_can.c:606)
 r9:00000040 r8:848fc6a0 r7:98ec0001 r6:83e6e480 r5:00000001 r4:85031120
[<8181cb64>] (can_rcv_filter) from [<8181d5a4>] (can_receive+0xb4/0xf0 net/can/af_can.c:663)
 r9:00000040 r8:00000000 r7:848fc000 r6:83cb5240 r5:84a80000 r4:83e6e480
[<8181d4f0>] (can_receive) from [<8181d664>] (can_rcv+0x84/0xac net/can/af_can.c:687)
 r9:00000040 r8:00000002 r7:00000000 r6:00000000 r5:8181d5e0 r4:83e6e480
[<8181d5e0>] (can_rcv) from [<814bc8f4>] (__netif_receive_skb_one_core+0x5c/0x80 net/core/dev.c:5670)
 r5:8181d5e0 r4:848fc000
[<814bc898>] (__netif_receive_skb_one_core) from [<814bc960>] (__netif_receive_skb+0x18/0x5c net/core/dev.c:5783)
 r5:ddde51b0 r4:83e6e480
[<814bc948>] (__netif_receive_skb) from [<814bcc68>] (process_backlog+0xa0/0x17c net/core/dev.c:6115)
 r5:ddde51b0 r4:83e6e480
[<814bcbc8>] (process_backlog) from [<814bdb74>] (__napi_poll+0x34/0x240 net/core/dev.c:6779)
 r10:ddde50c0 r9:ddde5300 r8:df805ea0 r7:df805e9b r6:00000040 r5:ddde51b0
 r4:00000001
[<814bdb40>] (__napi_poll) from [<814be3e8>] (napi_poll net/core/dev.c:6848 [inline])
[<814bdb40>] (__napi_poll) from [<814be3e8>] (net_rx_action+0x358/0x440 net/core/dev.c:6970)
 r9:ddde5300 r8:df805ea0 r7:0000012c r6:ffffc393 r5:ddde51b0 r4:00000000
[<814be090>] (net_rx_action) from [<8024b55c>] (handle_softirqs+0x158/0x464 kernel/softirq.c:554)
 r10:00000008 r9:8412d400 r8:00000101 r7:00400140 r6:00000003 r5:00000004
 r4:8260408c
[<8024b404>] (handle_softirqs) from [<8024b958>] (__do_softirq kernel/softirq.c:588 [inline])
[<8024b404>] (handle_softirqs) from [<8024b958>] (invoke_softirq kernel/softirq.c:428 [inline])
[<8024b404>] (handle_softirqs) from [<8024b958>] (__irq_exit_rcu+0xa4/0x164 kernel/softirq.c:637)
 r10:00000072 r9:8412d400 r8:00000000 r7:df985e38 r6:821df6f0 r5:8221ff04
 r4:8412d400
[<8024b8b4>] (__irq_exit_rcu) from [<8024bc58>] (irq_exit+0x10/0x18 kernel/softirq.c:661)
 r5:8221ff04 r4:824bbcdc
[<8024bc48>] (irq_exit) from [<819bb764>] (generic_handle_arch_irq+0x7c/0x80 kernel/irq/handle.c:240)
[<819bb6e8>] (generic_handle_arch_irq) from [<8196bc84>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40)
 r9:8412d400 r8:df985ef4 r7:df985e6c r6:ffffffff r5:60000013 r4:802499b0
[<8196bc68>] (call_with_stack) from [<80200bcc>] (__irq_svc+0x8c/0xbc arch/arm/kernel/entry-armv.S:227)
Exception stack(0xdf985e38 to 0xdf985e80)
5e20:                                                       00000000 00000000
5e40: 00000000 00000000 df985edc 8412d400 df985edc 00000001 df985ef4 8412d400
5e60: 00000072 df985eac df985e48 df985e88 8027d40c 802499b0 60000013 ffffffff
[<80249964>] (__do_wait) from [<80249bf4>] (do_wait+0x6c/0x14c kernel/exit.c:1692)
 r9:8412d400 r8:df985ef4 r7:00000001 r6:df985edc r5:8412d400 r4:40000005
[<80249b88>] (do_wait) from [<8024a1ac>] (kernel_wait4+0x9c/0x154 kernel/exit.c:1851)
 r9:8412d400 r8:00000000 r7:00000000 r6:7ecc3a7c r5:00000000 r4:40000005
[<8024a110>] (kernel_wait4) from [<8024a3f4>] (__do_sys_wait4 kernel/exit.c:1879 [inline])
[<8024a110>] (kernel_wait4) from [<8024a3f4>] (sys_wait4+0xf4/0x100 kernel/exit.c:1875)
 r9:8412d400 r8:8020029c r7:ffffffff r6:40000001 r5:00000000 r4:7ecc3a7c
[<8024a300>] (sys_wait4) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdf985fa8 to 0xdf985ff0)
5fa0:                   00000000 40000001 ffffffff 7ecc3a7c 40000001 00000000
5fc0: 00000000 40000001 ffffffff 00000072 00000000 7ecc3ac8 00000000 00000547
5fe0: 00000158 7ecc39e0 00000000 00127db8
 r7:00000072 r6:ffffffff r5:40000001 r4:00000000
SMP: failed to stop secondary CPUs
Rebooting in 86400 seconds..