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ODEBUG: activate active (active state 0) object: ffff888047d6d358 object type: rcu_head hint: 0x0
WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 41 56 48 8b 14 dd 60 44 16 8c 4c 89 e6 48 c7 c7 e0 38 16 8c e8 1f f6 8e fc 90 <0f> 0b 90 90 58 83 05 86 5a c0 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d
RSP: 0018:ffffc900006a0ad8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff817a4388
RDX: ffff88801deba440 RSI: ffffffff817a4395 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8c163f00
R13: ffffffff8baeb920 R14: 0000000000000000 R15: ffffc900006a0b98
FS: 0000000000000000(0000) GS:ffff8880d67b2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c32d59e CR3: 0000000031b71000 CR4: 0000000000352ef0
Call Trace:
debug_object_activate+0x2bc/0x4c0 lib/debugobjects.c:842
debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline]
__call_rcu_common.constprop.0+0x35/0xa10 kernel/rcu/tree.c:3108
radix_tree_node_free lib/radix-tree.c:310 [inline]
delete_node+0x1fc/0x8d0 lib/radix-tree.c:573
__radix_tree_delete+0x193/0x3d0 lib/radix-tree.c:1379
radix_tree_delete_item+0xea/0x230 lib/radix-tree.c:1430
afs_cell_destroy+0x1db/0x310 fs/afs/cell.c:523
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0x799/0x1530 kernel/rcu/tree.c:2861
handle_softirqs+0x219/0x8e0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:82
Code: 6d 61 02 c3 cc cc cc cc 0f 1f 00 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 d3 46 15 00 fb f4 cc 09 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc90000177df8 EFLAGS: 00000282
RAX: 0000000000550617 RBX: 0000000000000001 RCX: ffffffff8b94cb49
RDX: 0000000000000000 RSI: ffffffff8de52d31 RDI: ffffffff8c163380
RBP: ffffed1003bd7488 R08: 0000000000000001 R09: ffffed100d4a6655
R10: ffff88806a5332ab R11: 0000000000000000 R12: 0000000000000001
R13: ffff88801deba440 R14: ffffffff90ab7490 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:757
default_idle_call+0x6d/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:190 [inline]
do_idle+0x391/0x510 kernel/sched/idle.c:330
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428
start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:315
common_startup_64+0x13e/0x148
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 02 c3 add %bl,%al
2: cc int3
3: cc int3
4: cc int3
5: cc int3
6: 0f 1f 00 nopl (%rax)
9: 90 nop
a: 90 nop
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: f3 0f 1e fa endbr64
1d: eb 07 jmp 0x26
1f: 0f 00 2d d3 46 15 00 verw 0x1546d3(%rip) # 0x1546f9
26: fb sti
27: f4 hlt
* 28: e9 cc 09 03 00 jmp 0x309f9 <-- trapping instruction
2d: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
34: 00 00 00
37: 66 90 xchg %ax,%ax
39: 90 nop
3a: 90 nop
3b: 90 nop
3c: 90 nop
3d: 90 nop