BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4766
Read of size 8 at addr ffff88812a465f48 by task syz.1.174/1080

CPU: 0 PID: 1080 Comm: syz.1.174 Not tainted 5.10.231-syzkaller-00700-g4055d754db6f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:452
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4766
 ext4_quota_enable fs/ext4/super.c:6423 [inline]
 ext4_enable_quotas+0x56f/0x9f0 fs/ext4/super.c:6459
 ext4_fill_super+0x86dc/0x9150 fs/ext4/super.c:5060
 mount_bdev+0x262/0x370 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6638
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1572
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2917
 path_mount+0x56f/0xcb0 fs/namespace.c:3247
 do_mount fs/namespace.c:3260 [inline]
 __do_sys_mount fs/namespace.c:3468 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3445
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3445
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f19b55cd4ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f19b3c3ce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f19b3c3cef0 RCX: 00007f19b55cd4ca
RDX: 0000000020000140 RSI: 00000000200005c0 RDI: 00007f19b3c3ceb0
RBP: 0000000020000140 R08: 00007f19b3c3cef0 R09: 0000000000004000
R10: 0000000000004000 R11: 0000000000000246 R12: 00000000200005c0
R13: 00007f19b3c3ceb0 R14: 00000000000005d8 R15: 0000000020000040

Allocated by task 0:
(stack is not available)

The buggy address belongs to the object at ffff88812a465a20
 which belongs to the cache f2fs_inode_cache of size 1520
The buggy address is located 1320 bytes inside of
 1520-byte region [ffff88812a465a20, ffff88812a466010)
The buggy address belongs to the page:
page:ffffea0004a91800 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812a466700 pfn:0x12a460
head:ffffea0004a91800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff8881029cea80
raw: ffff88812a466700 0000000080130011 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 428, ts 30092509783, free_ts 0
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x166/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5348
 allocate_slab mm/slub.c:1808 [inline]
 new_slab+0x80/0x400 mm/slub.c:1869
 new_slab_objects mm/slub.c:2627 [inline]
 ___slab_alloc+0x302/0x4b0 mm/slub.c:2791
 __slab_alloc+0x63/0xa0 mm/slub.c:2831
 slab_alloc_node mm/slub.c:2913 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:2960
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2779 [inline]
 f2fs_alloc_inode+0x26/0x420 fs/f2fs/super.c:1373
 alloc_inode fs/inode.c:233 [inline]
 iget_locked+0x14f/0x870 fs/inode.c:1275
 f2fs_iget+0x55/0x50a0 fs/f2fs/inode.c:498
 f2fs_fill_super+0x4c57/0x7d90 fs/f2fs/super.c:4193
 mount_bdev+0x262/0x370 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4548
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1572
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2917
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88812a465e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88812a465e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88812a465f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                              ^
 ffff88812a465f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88812a466000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs warning (device loop1): ext4_enable_quotas:6467: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop1): mount failed