vxcan0: j1939_tp_rxtimer: 0xffff88802f8eac00: rx timeout, send abort
vxcan0: j1939_tp_rxtimer: 0xffff88802f8eac00: abort rx timeout. Force session deactivation
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 3 PID: 0 at lib/refcount.c:28 refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Modules linked in:
CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Not tainted 6.11.0-syzkaller-02520-gadfc3ded5c33 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Code: ff 89 de e8 48 c9 03 fd 84 db 0f 85 66 ff ff ff e8 5b c7 03 fd c6 05 fe 37 75 0b 01 90 48 c7 c7 00 c3 b0 8b e8 67 19 c6 fc 90 <0f> 0b 90 90 e9 43 ff ff ff e8 38 c7 03 fd 0f b6 1d d9 37 75 0b 31
RSP: 0018:ffffc90000908d40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814e2c79
RDX: ffff88801d6da440 RSI: ffffffff814e2c86 RDI: 0000000000000001
RBP: ffff8880314a6d64 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffff8880314a6d64 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001790 CR3: 000000000db7c000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__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+0x183/0x1a0 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+0x163/0x460 net/can/j1939/transport.c:282
__j1939_session_release net/can/j1939/transport.c:294 [inline]
kref_put include/linux/kref.h:65 [inline]
j1939_session_put net/can/j1939/transport.c:299 [inline]
j1939_tp_rxtimer+0x1e8/0x4f0 net/can/j1939/transport.c:1265
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1770
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:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:default_idle+0xf/0x20 arch/x86/kernel/process.c:743
Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 23 bb 2f 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc900001a7e08 EFLAGS: 00000206
RAX: 0000000000028eaf RBX: 0000000000000003 RCX: ffffffff8b16c979
RDX: 0000000000000000 RSI: ffffffff8b4cdac0 RDI: ffffffff8bb115a0
RBP: ffffed1003adb488 R08: 0000000000000001 R09: ffffed100d526fd9
R10: ffff88806a937ecb R11: 0000000000000000 R12: 0000000000000003
R13: ffff88801d6da440 R14: ffffffff90146ed8 R15: 0000000000000000
default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x32c/0x3f0 kernel/sched/idle.c:326
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:424
start_secondary+0x220/0x2b0 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x148
----------------
Code disassembly (best guess):
0: 4c 01 c7 add %r8,%rdi
3: 4c 29 c2 sub %r8,%rdx
6: e9 72 ff ff ff jmp 0xffffff7d
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 90 nop
1b: f3 0f 1e fa endbr64
1f: eb 07 jmp 0x28
21: 0f 00 2d 23 bb 2f 00 verw 0x2fbb23(%rip) # 0x2fbb4b
28: fb sti
29: f4 hlt
* 2a: fa cli <-- trapping instruction
2b: c3 ret
2c: cc int3
2d: cc int3
2e: cc int3
2f: cc int3
30: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
37: 00 00 00 00
3b: 90 nop
3c: 90 nop
3d: 90 nop
3e: 90 nop
3f: 90 nop