EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8.
cgroup2: Unknown parameter 'perf_event'
------------[ cut here ]------------
percpu ref (free_ioctx_reqs) <= 0 (0) after switching to atomic
WARNING: lib/percpu-refcount.c:197 at percpu_ref_switch_to_atomic_rcu+0x3cc/0x480, CPU#1: syz-executor.5/4031
Modules linked in:
CPU: 1 UID: 0 PID: 4031 Comm: syz-executor.5 Tainted: G        W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:percpu_ref_switch_to_atomic_rcu+0x3cc/0x480
Code: 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 9e 00 00 00 49 8b 75 e8 48 c7 c7 80 97 e2 84 e8 75 c5 e9 fe 90 <0f> 0b 90 90 e9 2b ff ff ff e8 f6 de 5f ff e9 9e fe ff ff e8 7c df
RSP: 0018:ffff88806cf08e20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8139de70
RDX: ffff88801b593700 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 8000000000000000 R08: 0000000000000001 R09: ffffed100d9e4801
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f38d600
R13: ffff88800f38d620 R14: 0000000000000002 R15: 0000000000000003
FS:  00007fe0a6369700(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556c370c58 CR3: 000000001d5e2000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 rcu_core+0x7c8/0x1800
 handle_softirqs+0x1b1/0x770
 __irq_exit_rcu+0xc4/0x100
 irq_exit_rcu+0x9/0x20
 sysvec_apic_timer_interrupt+0x70/0x80
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_release+0x152/0x290
Code: 84 e0 00 00 00 b8 ff ff ff ff 65 0f c1 05 ce 95 32 06 83 f8 01 0f 85 f6 00 00 00 41 f7 c5 00 02 00 00 74 01 fb 48 8b 44 24 10 <65> 48 2b 05 ee 55 32 06 0f 85 27 01 00 00 48 83 c4 18 5d 41 5c 41
RSP: 0018:ffff88801610f9b8 EFLAGS: 00000206
RAX: b349cae073e79200 RBX: dffffc0000000000 RCX: ffff88801610f9c4
RDX: 0000000000000002 RSI: ffffffff85c1c760 RDI: ffff88801b5941a8
RBP: ffffffff85c1c760 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff81b1cd36
R13: 0000000000000206 R14: ffff88801b593700 R15: 0000000000000003
 get_mem_cgroup_from_mm+0x4ab/0x680
 __mem_cgroup_charge+0x17/0x90
 __handle_mm_fault+0x1485/0x3260
 handle_mm_fault+0x2c3/0x9b0
 __get_user_pages+0x58a/0x2f10
 populate_vma_page_range+0x282/0x410
 __mm_populate+0x100/0x3a0
 __do_sys_mlockall+0x50f/0x5c0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe0a8df3b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe0a6369188 EFLAGS: 00000246 ORIG_RAX: 0000000000000097
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=59 sclass=netlink_route_socket pid=4080 comm=syz-executor.3
RAX: ffffffffffffffda RBX: 00007fe0a8f06f60 RCX: 00007fe0a8df3b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fe0a8e4df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc6f92c5f R14: 00007fe0a6369300 R15: 0000000000022000
 </TASK>
irq event stamp: 15506
hardirqs last  enabled at (15516): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=59 sclass=netlink_route_socket pid=4083 comm=syz-executor.3
hardirqs last disabled at (15523): [<ffffffff84bb7e0f>] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last  enabled at (14612): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (14629): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
percpu_ref_switch_to_atomic_rcu: percpu_ref_switch_to_atomic_rcu(): percpu_ref underflow slab kmalloc-64 start ffff88800f38d600 pointer offset 0 size 64
----------------
Code disassembly (best guess):
   0:	84 e0                	test   %ah,%al
   2:	00 00                	add    %al,(%rax)
   4:	00 b8 ff ff ff ff    	add    %bh,-0x1(%rax)
   a:	65 0f c1 05 ce 95 32 	xadd   %eax,%gs:0x63295ce(%rip)        # 0x63295e0
  11:	06
  12:	83 f8 01             	cmp    $0x1,%eax
  15:	0f 85 f6 00 00 00    	jne    0x111
  1b:	41 f7 c5 00 02 00 00 	test   $0x200,%r13d
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	48 8b 44 24 10       	mov    0x10(%rsp),%rax
* 2a:	65 48 2b 05 ee 55 32 	sub    %gs:0x63255ee(%rip),%rax        # 0x6325620 <-- trapping instruction
  31:	06
  32:	0f 85 27 01 00 00    	jne    0x15f
  38:	48 83 c4 18          	add    $0x18,%rsp
  3c:	5d                   	pop    %rbp
  3d:	41 5c                	pop    %r12
  3f:	41                   	rex.B