==================================================================
BUG: KASAN: slab-use-after-free in shrink_folio_list+0x141d/0x37d0
Read of size 8 at addr ffff88800ebc80d1 by task syz-executor.5/3989

CPU: 0 PID: 3989 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
 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: 0033:0x7f625672bb19
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:00007f6253ca1188 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f625683ef60 RCX: 00007f625672bb19
RDX: 0000000000000015 RSI: 0000000000004000 RDI: 0000000020ffa000
RBP: 00007f6256785f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff8e4ae1f R14: 00007f6253ca1300 R15: 0000000000022000
 </TASK>

Allocated by task 3927:
 kasan_save_stack+0x22/0x50
 kasan_set_track+0x25/0x30
 __kasan_slab_alloc+0x59/0x70
 kmem_cache_alloc+0x17b/0x390
 mas_alloc_nodes+0x4e7/0x890
 mas_node_count_gfp+0x106/0x140
 mas_root_expand.isra.0+0x92/0x700
 mas_wr_store_entry.isra.0+0x705/0x1050
 mas_store_gfp+0xce/0x1f0
 do_vmi_align_munmap.constprop.0+0x42b/0xca0
 do_vmi_munmap+0x1e7/0x300
 mmap_region+0x1fe/0x2170
 do_mmap+0x833/0xea0
 vm_mmap_pgoff+0x1b5/0x270
 ksys_mmap_pgoff+0x3af/0x500
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8

Last potentially related work creation:
 kasan_save_stack+0x22/0x50
 __kasan_record_aux_stack+0x8e/0xa0
 __call_rcu_common.constprop.0+0x6a/0xbd0
 mas_replace+0xac2/0x10f0
 mas_wr_node_store+0xd34/0x1210
 mas_wr_modify+0x6e6/0x18e0
 mas_wr_store_entry.isra.0+0x496/0x1050
 mas_store_prealloc+0xb3/0x160
 vma_complete+0x955/0xd70
 __split_vma+0x640/0x750
 do_vmi_align_munmap.constprop.0+0x29a/0xca0
 do_vmi_munmap+0x1e7/0x300
 __vm_munmap+0x138/0x240
 elf_map+0x26f/0x310
 load_elf_binary+0xd82/0x5030
 bprm_execve+0x803/0x1940
 kernel_execve+0x3ee/0x510
 call_usermodehelper_exec_async+0x263/0x4e0
 ret_from_fork+0x2c/0x50

Second to last potentially related work creation:
 kasan_save_stack+0x22/0x50
 __kasan_record_aux_stack+0x8e/0xa0
 __call_rcu_common.constprop.0+0x6a/0xbd0
 mas_replace+0xac2/0x10f0
 mas_wr_node_store+0xd34/0x1210
 mas_wr_modify+0x6e6/0x18e0
 mas_wr_store_entry.isra.0+0x496/0x1050
 mas_store_prealloc+0xb3/0x160
 vma_complete+0x955/0xd70
 __split_vma+0x640/0x750
 do_vmi_align_munmap.constprop.0+0x29a/0xca0
 do_vmi_munmap+0x1e7/0x300
 mmap_region+0x1fe/0x2170
 do_mmap+0x833/0xea0
 vm_mmap_pgoff+0x1b5/0x270
 ksys_mmap_pgoff+0x3af/0x500
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8

The buggy address belongs to the object at ffff88800ebc8000
 which belongs to the cache maple_node of size 256
The buggy address is located 209 bytes inside of
 freed 256-byte region [ffff88800ebc8000, ffff88800ebc8100)

The buggy address belongs to the physical page:
page:000000004811614f refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ebc9200 pfn:0xebc8
head:000000004811614f order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
page_type: 0xffffffff()
raw: 0100000000010200 ffff8880084c6140 ffffea00005d1d10 ffffea0000315490
raw: ffff88800ebc9200 0000000000100002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88800ebc7f80: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
 ffff88800ebc8000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88800ebc8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff88800ebc8100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88800ebc8180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
loop3: detected capacity change from 0 to 264192
SELinux: security_context_str_to_sid (root) failed with errno=-22
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 17 prio class 2
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 2, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 3, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 4, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 5, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 6, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 7, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
loop3: detected capacity change from 0 to 264192
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
SELinux: security_context_str_to_sid (root) failed with errno=-22
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer