Oops: general protection fault, probably for non-canonical address 0xffff1101189c0400: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xfff8a808c4e02000-0xfff8a808c4e02007]
CPU: 0 UID: 0 PID: 6962 Comm: udevd Not tainted 6.15.0-rc6-syzkaller-00105-g088d13246a46 #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:percpu_ref_get_many include/linux/percpu-refcount.h:205 [inline]
RIP: 0010:percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
RIP: 0010:obj_cgroup_get include/linux/memcontrol.h:760 [inline]
RIP: 0010:replace_stock_objcg mm/memcontrol.c:2774 [inline]
RIP: 0010:refill_obj_stock+0x1e1/0x7d0 mm/memcontrol.c:2952
Code: 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 96 05 00 00 49 8b 04 24 a8 03 0f 85 23 03 00 00 <65> 48 ff 00 e8 86 40 ff ff 49 8d 7c 24 18 be 04 00 00 00 48 89 7c
RSP: 0018:ffffc90006407918 EFLAGS: 00010046
RAX: ffff888041fe1400 RBX: ffffffff93a55cc0 RCX: 00000000bc83c05a
RDX: 1ffff110093edf00 RSI: ffffffff8bf48a20 RDI: ffffffff8dceed20
RBP: ffffffff908530b4 R08: de412ee965419ca4 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: ffff888049f6f800
R13: 0000000000000078 R14: ffff88806a434cc0 R15: ffff88806a434d08
FS:  00007f64689f6880(0000) GS:ffff8880d69df000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd184afc78 CR3: 0000000032ccd000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 obj_cgroup_uncharge mm/memcontrol.c:3015 [inline]
 __memcg_slab_free_hook+0x226/0x5b0 mm/memcontrol.c:3102
 memcg_slab_free_hook mm/slub.c:2205 [inline]
 slab_free mm/slub.c:4639 [inline]
 kmem_cache_free+0x381/0x4d0 mm/slub.c:4744
 __sigqueue_free+0xba/0x2a0 kernel/signal.c:475
 collect_signal+0x263/0x540 kernel/signal.c:587
 __dequeue_signal kernel/signal.c:609 [inline]
 dequeue_signal+0x3f9/0x520 kernel/signal.c:632
 signalfd_dequeue fs/signalfd.c:162 [inline]
 signalfd_read_iter+0x230/0x7c0 fs/signalfd.c:216
 new_sync_read fs/read_write.c:489 [inline]
 vfs_read+0x8c8/0xc70 fs/read_write.c:570
 ksys_read+0x12a/0x240 fs/read_write.c:713
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f64682a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffcf54ff400 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f64689f6880 RCX: 00007f64682a7407
RDX: 0000000000000080 RSI: 00007ffcf54ff540 RDI: 0000000000000003
RBP: 00005600511462c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffcf54ff490
R13: 00007ffcf54ff490 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:percpu_ref_get_many include/linux/percpu-refcount.h:205 [inline]
RIP: 0010:percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
RIP: 0010:obj_cgroup_get include/linux/memcontrol.h:760 [inline]
RIP: 0010:replace_stock_objcg mm/memcontrol.c:2774 [inline]
RIP: 0010:refill_obj_stock+0x1e1/0x7d0 mm/memcontrol.c:2952
Code: 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 96 05 00 00 49 8b 04 24 a8 03 0f 85 23 03 00 00 <65> 48 ff 00 e8 86 40 ff ff 49 8d 7c 24 18 be 04 00 00 00 48 89 7c
RSP: 0018:ffffc90006407918 EFLAGS: 00010046
RAX: ffff888041fe1400 RBX: ffffffff93a55cc0 RCX: 00000000bc83c05a
RDX: 1ffff110093edf00 RSI: ffffffff8bf48a20 RDI: ffffffff8dceed20
RBP: ffffffff908530b4 R08: de412ee965419ca4 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: ffff888049f6f800
R13: 0000000000000078 R14: ffff88806a434cc0 R15: ffff88806a434d08
FS:  00007f64689f6880(0000) GS:ffff8880d69df000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd184afc78 CR3: 0000000032ccd000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   9:	fc ff df
   c:	4c 89 e2             	mov    %r12,%rdx
   f:	48 c1 ea 03          	shr    $0x3,%rdx
  13:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  17:	0f 85 96 05 00 00    	jne    0x5b3
  1d:	49 8b 04 24          	mov    (%r12),%rax
  21:	a8 03                	test   $0x3,%al
  23:	0f 85 23 03 00 00    	jne    0x34c
* 29:	65 48 ff 00          	incq   %gs:(%rax) <-- trapping instruction
  2d:	e8 86 40 ff ff       	call   0xffff40b8
  32:	49 8d 7c 24 18       	lea    0x18(%r12),%rdi
  37:	be 04 00 00 00       	mov    $0x4,%esi
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	7c                   	.byte 0x7c