Oops: general protection fault, probably for non-canonical address 0xffff1101a3d30000: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xfff8a80d1e980000-0xfff8a80d1e980007]
CPU: 0 UID: 0 PID: 18372 Comm: kworker/u8:17 Not tainted 6.15.0-syzkaller-03589-gfeacb1774bd5 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: kvfree_rcu_reclaim kfree_rcu_work
RIP: 0010:percpu_ref_get_many+0xa3/0x140 include/linux/percpu-refcount.h:205
Code: a8 72 ff 49 bc 00 00 00 00 00 fc ff df 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 24 71 f7 ff 49 8b 07 a8 03 75 62 <65> 4c 01 30 e8 d4 d1 32 09 85 c0 74 3a e8 6b 6b 7b ff 84 c0 75 31
RSP: 0018:ffffc90005467718 EFLAGS: 00010046
RAX: ffff88807e0a4000 RBX: ffffffff822b6669 RCX: 07a2baceb7538d00
RDX: 0000000000000000 RSI: ffffffff8be24de0 RDI: ffffffff8be24da0
RBP: ffffc90005467840 R08: 0000000000000000 R09: ffffffff822b6669
R10: dffffc0000000000 R11: fffffbfff1f3fd17 R12: dffffc0000000000
R13: ffff88807cd27400 R14: 0000000000000001 R15: ffff88807cd27400
FS:  0000000000000000(0000) GS:ffff888125c8c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd4c09e049c CR3: 0000000066eab000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
 obj_cgroup_get include/linux/memcontrol.h:760 [inline]
 replace_stock_objcg mm/memcontrol.c:2772 [inline]
 refill_obj_stock+0x265/0x790 mm/memcontrol.c:2950
 obj_cgroup_uncharge mm/memcontrol.c:3013 [inline]
 __memcg_slab_free_hook+0x25d/0x390 mm/memcontrol.c:3100
 memcg_slab_free_hook mm/slub.c:2205 [inline]
 slab_free_bulk mm/slub.c:4660 [inline]
 kmem_cache_free_bulk+0x46e/0x520 mm/slub.c:5243
 kfree_bulk include/linux/slab.h:794 [inline]
 kvfree_rcu_bulk+0xe5/0x1e0 mm/slab_common.c:1516
 kfree_rcu_work+0xed/0x170 mm/slab_common.c:1594
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:percpu_ref_get_many+0xa3/0x140 include/linux/percpu-refcount.h:205
Code: a8 72 ff 49 bc 00 00 00 00 00 fc ff df 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 24 71 f7 ff 49 8b 07 a8 03 75 62 <65> 4c 01 30 e8 d4 d1 32 09 85 c0 74 3a e8 6b 6b 7b ff 84 c0 75 31
RSP: 0018:ffffc90005467718 EFLAGS: 00010046
RAX: ffff88807e0a4000 RBX: ffffffff822b6669 RCX: 07a2baceb7538d00
RDX: 0000000000000000 RSI: ffffffff8be24de0 RDI: ffffffff8be24da0
RBP: ffffc90005467840 R08: 0000000000000000 R09: ffffffff822b6669
R10: dffffc0000000000 R11: fffffbfff1f3fd17 R12: dffffc0000000000
R13: ffff88807cd27400 R14: 0000000000000001 R15: ffff88807cd27400
FS:  0000000000000000(0000) GS:ffff888125c8c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd4c09e049c CR3: 0000000066eab000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	72 ff                	jb     0x1
   2:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
   9:	fc ff df
   c:	4c 89 f8             	mov    %r15,%rax
   f:	48 c1 e8 03          	shr    $0x3,%rax
  13:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  18:	74 08                	je     0x22
  1a:	4c 89 ff             	mov    %r15,%rdi
  1d:	e8 24 71 f7 ff       	call   0xfff77146
  22:	49 8b 07             	mov    (%r15),%rax
  25:	a8 03                	test   $0x3,%al
  27:	75 62                	jne    0x8b
* 29:	65 4c 01 30          	add    %r14,%gs:(%rax) <-- trapping instruction
  2d:	e8 d4 d1 32 09       	call   0x932d206
  32:	85 c0                	test   %eax,%eax
  34:	74 3a                	je     0x70
  36:	e8 6b 6b 7b ff       	call   0xff7b6ba6
  3b:	84 c0                	test   %al,%al
  3d:	75 31                	jne    0x70