------------[ cut here ]------------
ODEBUG: activate active (active state 0) object: ffff888058899098 object type: rcu_head hint: 0x0
WARNING: lib/debugobjects.c:615 at debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612, CPU#0: syz-executor/5875
Modules linked in:
CPU: 0 UID: 0 PID: 5875 Comm: syz-executor Not tainted 6.17.0-rc1-next-20250812-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 b7 46 4a fd 4d 8b 0f 48 c7 c7 a0 e2 04 8c 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 ca 7c aa fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 07 df 0b 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc900000078e0 EFLAGS: 00010292
RAX: 7f6cfa21df4d9300 RBX: dffffc0000000000 RCX: ffff8880306e9e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c7a1ec R12: 0000000000000000
R13: ffffffff8c04e420 R14: ffff888058899098 R15: ffffffff8babd420
FS: 0000555567fef500(0000) GS:ffff8881257da000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2bbb6e56c0 CR3: 000000007728a000 CR4: 00000000003526f0
Call Trace:
debug_object_activate+0x26a/0x420 lib/debugobjects.c:842
debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline]
__call_rcu_common kernel/rcu/tree.c:3108 [inline]
call_rcu+0xaa/0x9c0 kernel/rcu/tree.c:3243
radix_tree_node_free lib/radix-tree.c:310 [inline]
delete_node+0x1b6/0xa50 lib/radix-tree.c:573
radix_tree_delete_item+0x2b6/0x400 lib/radix-tree.c:1430
afs_cell_destroy+0x16f/0x2c0 fs/afs/cell.c:523
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_is_watching+0x9/0xb0 kernel/rcu/tree.c:750
Code: 61 03 eb cc 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 <65> ff 05 a0 b2 3d 11 e8 eb e0 db 09 89 c3 83 f8 08 73 65 49 bf 00
RSP: 0018:ffffc90003fd7288 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffffff822ea8aa RCX: ffff8880306e9e00
RDX: 0000000000000000 RSI: ffffffff822ea8aa RDI: ffffffff8e539fa0
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff822ea8aa
R10: dffffc0000000000 R11: fffff9400033aa79 R12: dffffc0000000000
R13: ffffffff822ea8aa R14: ffffffff8e539fa0 R15: ffff88813fffa580
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x4b/0x3e0 kernel/locking/lockdep.c:5879
rcu_lock_release include/linux/rcupdate.h:341 [inline]
rcu_read_unlock_sched include/linux/rcupdate.h:953 [inline]
pfn_valid+0x3b2/0x490 include/linux/mmzone.h:2172
page_table_check_set+0x25/0x730 mm/page_table_check.c:105
page_table_check_ptes_set include/linux/page_table_check.h:76 [inline]
set_ptes include/linux/pgtable.h:292 [inline]
__copy_present_ptes mm/memory.c:972 [inline]
copy_present_ptes mm/memory.c:1051 [inline]
copy_pte_range mm/memory.c:1174 [inline]
copy_pmd_range+0x4439/0x71d0 mm/memory.c:1261
copy_pud_range mm/memory.c:1298 [inline]
copy_p4d_range mm/memory.c:1322 [inline]
copy_page_range+0xc14/0x1270 mm/memory.c:1410
dup_mmap+0xf57/0x1ac0 mm/mmap.c:1834
dup_mm kernel/fork.c:1485 [inline]
copy_mm+0x13c/0x4b0 kernel/fork.c:1537
copy_process+0x1706/0x3c00 kernel/fork.c:2175
kernel_clone+0x21e/0x840 kernel/fork.c:2605
__do_sys_clone kernel/fork.c:2748 [inline]
__se_sys_clone kernel/fork.c:2732 [inline]
__x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2732
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2bba985453
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffe4d85bf18 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2bba985453
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555567fef7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000001a3d6 R15: 00007ffe4d85c0b0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 03 eb add %ebx,%ebp
2: cc int3
3: 66 66 66 66 2e 0f 1f data16 data16 data16 cs nopw 0x0(%rax,%rax,1)
a: 84 00 00 00 00 00
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: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: f3 0f 1e fa endbr64
24: 41 57 push %r15
26: 41 56 push %r14
28: 53 push %rbx
* 29: 65 ff 05 a0 b2 3d 11 incl %gs:0x113db2a0(%rip) # 0x113db2d0 <-- trapping instruction
30: e8 eb e0 db 09 call 0x9dbe120
35: 89 c3 mov %eax,%ebx
37: 83 f8 08 cmp $0x8,%eax
3a: 73 65 jae 0xa1
3c: 49 rex.WB
3d: bf .byte 0xbf