==================================================================
BUG: KASAN: slab-out-of-bounds in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: slab-out-of-bounds in atomic64_read include/linux/atomic/atomic-instrumented.h:1610 [inline]
BUG: KASAN: slab-out-of-bounds in memcg_vmstats_needs_flush mm/memcontrol.c:569 [inline]
BUG: KASAN: slab-out-of-bounds in memcg_rstat_updated+0x13c/0x288 mm/memcontrol.c:594
Read of size 8 at addr ffff0000ee411662 by task syz.5.342/8201

CPU: 0 UID: 0 PID: 8201 Comm: syz.5.342 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0x198/0x550 mm/kasan/report.c:521
 kasan_report+0xd8/0x138 mm/kasan/report.c:634
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x268/0x2a8 mm/kasan/generic.c:189
 __kasan_check_read+0x20/0x30 mm/kasan/shadow.c:31
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic64_read include/linux/atomic/atomic-instrumented.h:1610 [inline]
 memcg_vmstats_needs_flush mm/memcontrol.c:569 [inline]
 memcg_rstat_updated+0x13c/0x288 mm/memcontrol.c:594
 __mod_memcg_lruvec_state+0x374/0x7e0 mm/memcontrol.c:766
 __mod_lruvec_state+0x64/0x7c mm/memcontrol.c:789
 __update_lru_size include/linux/mm_inline.h:47 [inline]
 update_lru_size include/linux/mm_inline.h:56 [inline]
 lruvec_add_folio include/linux/mm_inline.h:347 [inline]
 lru_add+0x5e0/0xbf8 mm/swap.c:154
 folio_batch_move_lru+0x20c/0x3c0 mm/swap.c:168
 __folio_batch_add_and_move+0x3c4/0x630 mm/swap.c:196
 folio_add_lru+0xc4/0x154 mm/swap.c:505
 shmem_alloc_and_add_folio+0xfa8/0x1564 mm/shmem.c:1961
 shmem_get_folio_gfp+0x554/0x1790 mm/shmem.c:2545
 shmem_get_folio mm/shmem.c:2651 [inline]
 shmem_write_begin+0x140/0x488 mm/shmem.c:3301
 generic_perform_write+0x29c/0x868 mm/filemap.c:4102
 shmem_file_write_iter+0x110/0x138 mm/shmem.c:3477
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0x704/0xa9c fs/read_write.c:679
 ksys_write+0x15c/0x26c fs/read_write.c:731
 __do_sys_write fs/read_write.c:742 [inline]
 __se_sys_write fs/read_write.c:739 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:739
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Allocated by task 7833:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:562
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x2cc/0x428 mm/slub.c:4325
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 mem_cgroup_alloc mm/memcontrol.c:3507 [inline]
 mem_cgroup_css_alloc+0x2a8/0x159c mm/memcontrol.c:3570
 css_create kernel/cgroup/cgroup.c:5627 [inline]
 cgroup_apply_control_enable+0x348/0x9ac kernel/cgroup/cgroup.c:3239
 cgroup_mkdir+0x864/0xba0 kernel/cgroup/cgroup.c:5843
 kernfs_iop_mkdir+0x22c/0x3bc fs/kernfs/dir.c:1247
 vfs_mkdir+0x27c/0x410 fs/namei.c:4313
 do_mkdirat+0x250/0x584 fs/namei.c:4336
 __do_sys_mkdirat fs/namei.c:4351 [inline]
 __se_sys_mkdirat fs/namei.c:4349 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4349
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

The buggy address belongs to the object at ffff0000ee411000
 which belongs to the cache kmalloc-cg-2k of size 2048
The buggy address is located 1634 bytes inside of
 allocated 1640-byte region [ffff0000ee411000, ffff0000ee411668)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000ee412000 pfn:0x12e410
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000c9c2db01
flags: 0x5ffc00000000240(workingset|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000240 ffff0000c000f3c0 fffffdffc3255410 fffffdffc3689610
raw: ffff0000ee412000 0000000000080007 00000000f5000000 ffff0000c9c2db01
head: 05ffc00000000240 ffff0000c000f3c0 fffffdffc3255410 fffffdffc3689610
head: ffff0000ee412000 0000000000080007 00000000f5000000 ffff0000c9c2db01
head: 05ffc00000000003 fffffdffc3b90401 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000ee411500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000ee411580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000ee411600: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
                                                          ^
 ffff0000ee411680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000ee411700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
Unable to handle kernel paging request at virtual address ffff0000ee411662
KASAN: maybe wild-memory-access in range [0xfffc00077208b310-0xfffc00077208b317]
Mem abort info:
  ESR = 0x0000000096000021
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x21: alignment fault
Data abort info:
  ISV = 0, ISS = 0x00000021, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001a4a2b000
[ffff0000ee411662] pgd=0000000000000000, p4d=180000023ffff403, pud=180000023f41b403, pmd=180000023f2a8403, pte=006800012e411707
Internal error: Oops: 0000000096000021 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 UID: 0 PID: 8201 Comm: syz.5.342 Tainted: G    B              6.14.0-rc7-syzkaller-ga2392f333575 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __lse_atomic64_add arch/arm64/include/asm/atomic_lse.h:134 [inline]
pc : arch_atomic64_add arch/arm64/include/asm/atomic.h:67 [inline]
pc : raw_atomic64_add include/linux/atomic/atomic-arch-fallback.h:2672 [inline]
pc : atomic64_add include/linux/atomic/atomic-instrumented.h:1683 [inline]
pc : memcg_rstat_updated+0x19c/0x288 mm/memcontrol.c:595
lr : instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
lr : atomic64_add include/linux/atomic/atomic-instrumented.h:1682 [inline]
lr : memcg_rstat_updated+0x198/0x288 mm/memcontrol.c:595
sp : ffff8000a40e72b0
x29: ffff8000a40e72b0 x28: 1fffffbff7ef0820 x27: ffff80008fd3d000
x26: 1fffffbff7ef0822 x25: 1ffff00011fa7ac6 x24: 0000000000000001
x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000ee411662
x20: fffffdffbf784100 x19: 0000000000000040 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008b7c542c x15: ffff60001dc822cd
x14: 1fffe0001dc822cc x13: 00000000000000fc x12: ffffffffffffffff
x11: ffff60001dc822cd x10: 1fffe0001dc822cd x9 : ffff800097aa7400
x8 : 0000000000000001 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000a40e6958 x4 : ffff80008fe2fb00 x3 : ffff800080c658ec
x2 : 0000000000000001 x1 : 0000000000000008 x0 : 0000000000000001
Call trace:
 alternative_has_cap_likely arch/arm64/include/asm/alternative-macros.h:232 [inline] (P)
 arch_atomic64_add arch/arm64/include/asm/atomic.h:67 [inline] (P)
 raw_atomic64_add include/linux/atomic/atomic-arch-fallback.h:2672 [inline] (P)
 atomic64_add include/linux/atomic/atomic-instrumented.h:1683 [inline] (P)
 memcg_rstat_updated+0x19c/0x288 mm/memcontrol.c:595 (P)
 __mod_memcg_lruvec_state+0x374/0x7e0 mm/memcontrol.c:766
 __mod_lruvec_state+0x64/0x7c mm/memcontrol.c:789
 __update_lru_size include/linux/mm_inline.h:47 [inline]
 update_lru_size include/linux/mm_inline.h:56 [inline]
 lruvec_add_folio include/linux/mm_inline.h:347 [inline]
 lru_add+0x5e0/0xbf8 mm/swap.c:154
 folio_batch_move_lru+0x20c/0x3c0 mm/swap.c:168
 __folio_batch_add_and_move+0x3c4/0x630 mm/swap.c:196
 folio_add_lru+0xc4/0x154 mm/swap.c:505
 shmem_alloc_and_add_folio+0xfa8/0x1564 mm/shmem.c:1961
 shmem_get_folio_gfp+0x554/0x1790 mm/shmem.c:2545
 shmem_get_folio mm/shmem.c:2651 [inline]
 shmem_write_begin+0x140/0x488 mm/shmem.c:3301
 generic_perform_write+0x29c/0x868 mm/filemap.c:4102
 shmem_file_write_iter+0x110/0x138 mm/shmem.c:3477
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0x704/0xa9c fs/read_write.c:679
 ksys_write+0x15c/0x26c fs/read_write.c:731
 __do_sys_write fs/read_write.c:742 [inline]
 __se_sys_write fs/read_write.c:739 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:739
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 91198115 aa1503e0 97fe4eaa d503201f (f83302bf) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	91198115 	add	x21, x8, #0x660
   4:	aa1503e0 	mov	x0, x21
   8:	97fe4eaa 	bl	0xfffffffffff93ab0
   c:	d503201f 	nop
* 10:	f83302bf 	stadd	x19, [x21] <-- trapping instruction