==================================================================
BUG: KASAN: slab-out-of-bounds in shrink_folio_list+0x141d/0x37d0
Read of size 8 at addr ffff888042498741 by task syz-executor.5/89988

CPU: 0 PID: 89988 Comm: syz-executor.5 Not tainted 6.4.0-next-20230706 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x91/0xf0
 print_report+0xcc/0x620
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 kasan_report+0xbe/0xf0
 kasan_check_range+0x39/0x1b0
 shrink_folio_list+0x141d/0x37d0
 reclaim_folio_list+0xc4/0x300
 reclaim_pages+0x377/0x520
 madvise_cold_or_pageout_pte_range+0xc9c/0xf90
 walk_pgd_range+0xcc3/0x1740
 __walk_page_range+0x5f6/0x720
 walk_page_range+0x316/0x4b0
 madvise_pageout+0x30b/0x580
 madvise_vma_behavior+0x413/0x20a0
 do_madvise.part.0+0x39a/0x650
 __x64_sys_madvise+0x10c/0x160
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7f9871fabb19
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:00007f986f521188 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f98720bef60 RCX: 00007f9871fabb19
RDX: 0000000000000015 RSI: 0000000000004000 RDI: 0000000020ffa000
RBP: 00007f9872005f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc195a572f R14: 00007f986f521300 R15: 0000000000022000
 </TASK>

CPU: 1 PID: 89984 Comm: syz-executor.7 Not tainted 6.4.0-next-20230706 #1
Allocated by task 7327:
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
 kasan_save_stack+0x22/0x50
Call Trace:
 kasan_set_track+0x25/0x30
 <TASK>
 __kasan_slab_alloc+0x59/0x70
 dump_stack_lvl+0xc1/0xf0
 kmem_cache_alloc+0x17b/0x390
 should_fail_ex+0x4b4/0x5b0
 anon_vma_fork+0xe6/0x630
 dup_mmap+0xaf9/0x1250
 should_failslab+0x9/0x20
 copy_process+0x3e68/0x7320
 __kmem_cache_alloc_node+0x66/0x310
 kernel_clone+0xeb/0x7d0
 __do_sys_clone+0xba/0x100
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
 __kmalloc_node_track_caller+0x4b/0x160

The buggy address belongs to the object at ffff888042498660
 which belongs to the cache anon_vma of size 208
 kstrdup+0x3f/0x80
The buggy address is located 17 bytes to the right of
 allocated 208-byte region [ffff888042498660, ffff888042498730)
 kstrdup_const+0x57/0x80

The buggy address belongs to the physical page:
 alloc_vfsmnt+0xb5/0x6c0
page:00000000f8135b68 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x42498
 clone_mnt+0x6c/0xd80
memcg:ffff888019d25a01
 copy_tree+0x3b3/0x8a0
anon flags: 0x100000000000200(slab|node=0|zone=1)
 copy_mnt_ns+0x1a9/0xae0
page_type: 0xffffffff()
raw: 0100000000000200 ffff8880087a2280 ffffea00003d2380 dead000000000003
 create_new_namespaces+0xd6/0xb30
raw: 0000000000000000 00000000000f000f 00000001ffffffff ffff888019d25a01
page dumped because: kasan: bad access detected
 copy_namespaces+0x414/0x500

Memory state around the buggy address:
 copy_process+0x2b78/0x7320
 ffff888042498600: 00 00 00 00 fc fc fc fc fc fc fc fc 00 00 00 00
 ffff888042498680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888042498700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc 00 00
                                           ^
 kernel_clone+0xeb/0x7d0
 ffff888042498780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888042498800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
==================================================================
hpet: Lost 4 RTC interrupts
 __do_sys_clone3+0x1d5/0x250
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7ff715676b19
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:00007ff712bec188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007ff715789f60 RCX: 00007ff715676b19
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200016c0
RBP: 00007ff712bec1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffc76087d6f R14: 00007ff712bec300 R15: 0000000000022000
 </TASK>
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16