loop3: detected capacity change from 0 to 512
==================================================================
BUG: KASAN: use-after-free in __ext4_iget+0x2ee/0x3f00 fs/ext4/inode.c:4682
Read of size 8 at addr ffff88811c32fef8 by task syz-executor.3/27133

CPU: 0 PID: 27133 Comm: syz-executor.3 Tainted: G        W         5.15.118-syzkaller-01748-g241da2ad5601 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description+0x87/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:444
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 __ext4_iget+0x2ee/0x3f00 fs/ext4/inode.c:4682
 ext4_quota_enable fs/ext4/super.c:6363 [inline]
 ext4_enable_quotas+0x556/0x980 fs/ext4/super.c:6399
 ext4_fill_super+0x8b32/0x9680 fs/ext4/super.c:4950
 mount_bdev+0x282/0x3b0 fs/super.c:1378
 ext4_mount+0x34/0x40 fs/ext4/super.c:6578
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:610
 vfs_get_tree+0x88/0x290 fs/super.c:1508
 do_new_mount+0x28b/0xad0 fs/namespace.c:2994
 path_mount+0x671/0x1070 fs/namespace.c:3324
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3522
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f53d1c218ba
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f53d0992f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000000004a6 RCX: 00007f53d1c218ba
RDX: 00000000200004c0 RSI: 0000000020000500 RDI: 00007f53d0992fe0
RBP: 00007f53d0993020 R08: 00007f53d0993020 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200004c0
R13: 0000000020000500 R14: 00007f53d0992fe0 R15: 0000000020000240
 </TASK>

The buggy address belongs to the page:
page:ffffea000470cbc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x200 pfn:0x11c32f
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000200 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 18654, ts 2646627741135, free_ts 2692793738034
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2595
 prep_new_page mm/page_alloc.c:2601 [inline]
 get_page_from_freelist+0x2eab/0x2f80 mm/page_alloc.c:4394
 __alloc_pages+0x386/0x7b0 mm/page_alloc.c:5679
 allocate_slab mm/slub.c:1930 [inline]
 new_slab+0x92/0x490 mm/slub.c:1993
 ___slab_alloc+0x39e/0x830 mm/slub.c:3026
 __slab_alloc+0x4a/0x90 mm/slub.c:3113
 slab_alloc_node mm/slub.c:3204 [inline]
 slab_alloc mm/slub.c:3246 [inline]
 kmem_cache_alloc+0x134/0x200 mm/slub.c:3251
 kmem_cache_zalloc include/linux/slab.h:728 [inline]
 alloc_buffer_head+0x26/0x110 fs/buffer.c:3311
 alloc_page_buffers+0x192/0x390 fs/buffer.c:832
 create_empty_buffers+0x3d/0x4c0 fs/buffer.c:1562
 ext4_block_write_begin+0x280/0x12a0 fs/ext4/inode.c:1070
 ext4_da_write_begin+0x5da/0xc30 fs/ext4/inode.c:3021
 generic_perform_write+0x2bc/0x5a0 mm/filemap.c:3831
 ext4_buffered_write_iter+0x48a/0x610 fs/ext4/file.c:270
 ext4_file_write_iter+0x443/0x1c80
 call_write_iter include/linux/fs.h:2159 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0xd5d/0x1110 fs/read_write.c:594
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1466 [inline]
 free_pcp_prepare mm/page_alloc.c:1538 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3502
 free_unref_page+0xbd/0x5a0 mm/page_alloc.c:3583
 free_the_page mm/page_alloc.c:800 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5755
 __free_slab+0xec/0x1d0 mm/slub.c:2018
 free_slab mm/slub.c:2033 [inline]
 discard_slab mm/slub.c:2039 [inline]
 __unfreeze_partials+0x165/0x1a0 mm/slub.c:2525
 put_cpu_partial+0xc4/0x120 mm/slub.c:2605
 __slab_free+0x1c8/0x290 mm/slub.c:3386
 do_slab_free mm/slub.c:3505 [inline]
 ___cache_free+0x109/0x120 mm/slub.c:3524
 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x44/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3238 [inline]
 slab_alloc mm/slub.c:3246 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3251
 vm_area_dup+0x26/0x230 kernel/fork.c:367
 dup_mmap kernel/fork.c:601 [inline]
 dup_mm+0x81b/0x12c0 kernel/fork.c:1513

Memory state around the buggy address:
 ffff88811c32fd80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811c32fe00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88811c32fe80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                                ^
 ffff88811c32ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811c32ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs warning (device loop3): ext4_enable_quotas:6407: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop3): mount failed