loop0: detected capacity change from 0 to 2048
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
==================================================================
BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data fs/ext4/inline.c:209 [inline]
BUG: KASAN: slab-out-of-bounds in ext4_convert_inline_data_nolock+0x31a/0xd80 fs/ext4/inline.c:1213
Read of size 20 at addr ffff888076dba1a3 by task syz-executor.0/5427

CPU: 0 PID: 5427 Comm: syz-executor.0 Not tainted 6.4.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:351 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:462
 kasan_report+0x176/0x1b0 mm/kasan/report.c:572
 kasan_check_range+0x283/0x290 mm/kasan/generic.c:187
 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105
 ext4_read_inline_data fs/ext4/inline.c:209 [inline]
 ext4_convert_inline_data_nolock+0x31a/0xd80 fs/ext4/inline.c:1213
 ext4_convert_inline_data+0x4da/0x620 fs/ext4/inline.c:2074
 ext4_fallocate+0x14e/0x2000 fs/ext4/extents.c:4708
 vfs_fallocate+0x54b/0x6b0 fs/open.c:324
 ksys_fallocate fs/open.c:347 [inline]
 __do_sys_fallocate fs/open.c:355 [inline]
 __se_sys_fallocate fs/open.c:353 [inline]
 __x64_sys_fallocate+0xbd/0x100 fs/open.c:353
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fddcd88c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fddce576168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fddcd9abf80 RCX: 00007fddcd88c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fddcd8e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7b6975ff R14: 00007fddce576300 R15: 0000000000022000
 </TASK>

Allocated by task 5334:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 __kasan_slab_alloc+0x4b/0x60 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x64/0x380 mm/slab.h:711
 kmem_cache_alloc_bulk+0x394/0x480 mm/slub.c:4033
 mt_alloc_bulk lib/maple_tree.c:164 [inline]
 mas_alloc_nodes+0x3df/0x800 lib/maple_tree.c:1309
 mas_node_count_gfp lib/maple_tree.c:1367 [inline]
 mas_preallocate+0x131/0x350 lib/maple_tree.c:5775
 vma_iter_prealloc mm/internal.h:1029 [inline]
 __split_vma+0x1af/0x760 mm/mmap.c:2253
 do_vmi_align_munmap+0x3ae/0x13b0 mm/mmap.c:2380
 do_vmi_munmap+0x24a/0x2b0 mm/mmap.c:2530
 mmap_region+0x769/0x21b0 mm/mmap.c:2578
 do_mmap+0x8c4/0xf70 mm/mmap.c:1394
 vm_mmap_pgoff+0x1db/0x410 mm/util.c:543
 ksys_mmap_pgoff+0x4f9/0x6d0 mm/mmap.c:1440
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 5334:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free+0xb0/0x100 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3786 [inline]
 kmem_cache_free_bulk+0x4ca/0x710 mm/slub.c:3904
 mt_free_bulk lib/maple_tree.c:169 [inline]
 mas_destroy+0x1c50/0x2310 lib/maple_tree.c:5830
 mas_store_prealloc+0x351/0x460 lib/maple_tree.c:5760
 vma_iter_store mm/internal.h:1070 [inline]
 vma_complete+0x4da/0xe20 mm/mmap.c:585
 __split_vma+0x736/0x760 mm/mmap.c:2290
 do_vmi_align_munmap+0x3ae/0x13b0 mm/mmap.c:2380
 do_vmi_munmap+0x24a/0x2b0 mm/mmap.c:2530
 mmap_region+0x769/0x21b0 mm/mmap.c:2578
 do_mmap+0x8c4/0xf70 mm/mmap.c:1394
 vm_mmap_pgoff+0x1db/0x410 mm/util.c:543
 ksys_mmap_pgoff+0x4f9/0x6d0 mm/mmap.c:1440
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff888076dba000
 which belongs to the cache maple_node of size 256
The buggy address is located 163 bytes to the right of
 allocated 256-byte region [ffff888076dba000, ffff888076dba100)

The buggy address belongs to the physical page:
page:ffffea0001db6e80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x76dba
head:ffffea0001db6e80 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff8880124cd000 ffffea0001db4680 dead000000000002
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4745, tgid 4745 (cmp), ts 24269114606, free_ts 19670240913
 prep_new_page mm/page_alloc.c:1738 [inline]
 get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768
 alloc_slab_page+0x6a/0x160 mm/slub.c:1851
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2051
 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3192
 __kmem_cache_alloc_bulk mm/slub.c:3951 [inline]
 kmem_cache_alloc_bulk+0x19b/0x480 mm/slub.c:4026
 mt_alloc_bulk lib/maple_tree.c:164 [inline]
 mas_alloc_nodes+0x3df/0x800 lib/maple_tree.c:1309
 mas_node_count_gfp lib/maple_tree.c:1367 [inline]
 mas_preallocate+0x131/0x350 lib/maple_tree.c:5775
 vma_iter_prealloc mm/internal.h:1029 [inline]
 __split_vma+0x1af/0x760 mm/mmap.c:2253
 do_vmi_align_munmap+0x492/0x13b0 mm/mmap.c:2398
 do_vmi_munmap+0x24a/0x2b0 mm/mmap.c:2530
 mmap_region+0x769/0x21b0 mm/mmap.c:2578
 do_mmap+0x8c4/0xf70 mm/mmap.c:1394
 vm_mmap_pgoff+0x1db/0x410 mm/util.c:543
 ksys_mmap_pgoff+0x4f9/0x6d0 mm/mmap.c:1440
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1302 [inline]
 free_unref_page_prepare+0x8fe/0xa10 mm/page_alloc.c:2564
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2659
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x23/0x60 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x64/0x380 mm/slab.h:711
 slab_alloc_node mm/slub.c:3451 [inline]
 slab_alloc mm/slub.c:3459 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3466 [inline]
 kmem_cache_alloc+0x111/0x2a0 mm/slub.c:3475
 getname_flags+0xbc/0x4e0 fs/namei.c:140
 vfs_fstatat fs/stat.c:275 [inline]
 __do_sys_newfstatat fs/stat.c:446 [inline]
 __se_sys_newfstatat fs/stat.c:440 [inline]
 __x64_sys_newfstatat+0x12e/0x1d0 fs/stat.c:440
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff888076dba080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888076dba100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888076dba180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                               ^
 ffff888076dba200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888076dba280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================