==================================================================
BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:4963 [inline]
BUG: KASAN: use-after-free in __ext4_iget+0x384/0x4330 fs/ext4/inode.c:5011
Read of size 8 at addr ffff8881b4b3ff50 by task syz-executor.1/4956

CPU: 1 PID: 4956 Comm: syz-executor.1 Not tainted 5.4.249-syzkaller-00007-g50533a8b511b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x241 lib/dump_stack.c:118
 print_address_description+0x8c/0x600 mm/kasan/report.c:384
 __kasan_report+0xf3/0x120 mm/kasan/report.c:516
 kasan_report+0x30/0x60 mm/kasan/common.c:653
 check_igot_inode fs/ext4/inode.c:4963 [inline]
 __ext4_iget+0x384/0x4330 fs/ext4/inode.c:5011
 ext4_quota_enable fs/ext4/super.c:6055 [inline]
 ext4_enable_quotas+0x528/0x940 fs/ext4/super.c:6091
 ext4_fill_super+0x84d4/0x8d70 fs/ext4/super.c:4708
 mount_bdev+0x267/0x370 fs/super.c:1417
 legacy_get_tree+0xdf/0x170 fs/fs_context.c:647
 vfs_get_tree+0x85/0x260 fs/super.c:1547
 do_new_mount+0x292/0x570 fs/namespace.c:2843
 do_mount+0x688/0xe10 fs/namespace.c:3163
 ksys_mount+0xc2/0xf0 fs/namespace.c:3372
 __do_sys_mount fs/namespace.c:3386 [inline]
 __se_sys_mount fs/namespace.c:3383 [inline]
 __x64_sys_mount+0xb1/0xc0 fs/namespace.c:3383
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1

The buggy address belongs to the page:
page:ffffea0006d2cfc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2
flags: 0x8000000000000000()
raw: 8000000000000000 ffffea0006f59d48 ffffea0006e8e148 0000000000000000
raw: 0000000000000002 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)
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook mm/page_alloc.c:2165 [inline]
 prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
 get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
 __alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4891
 alloc_slab_page+0x39/0x3c0 mm/slub.c:343
 allocate_slab mm/slub.c:1683 [inline]
 new_slab+0x97/0x440 mm/slub.c:1749
 new_slab_objects mm/slub.c:2505 [inline]
 ___slab_alloc+0x2fe/0x490 mm/slub.c:2667
 __slab_alloc+0x62/0xa0 mm/slub.c:2707
 slab_alloc_node mm/slub.c:2792 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc+0x109/0x250 mm/slub.c:2842
 kmem_cache_zalloc include/linux/slab.h:680 [inline]
 jbd2_alloc_handle include/linux/jbd2.h:1437 [inline]
 new_handle fs/jbd2/transaction.c:433 [inline]
 jbd2__journal_start+0x10c/0x6c0 fs/jbd2/transaction.c:458
 __ext4_journal_start fs/ext4/ext4_jbd2.h:311 [inline]
 ext4_da_write_begin+0x6d9/0xfe0 fs/ext4/inode.c:3166
 generic_perform_write+0x2c7/0x560 mm/filemap.c:3352
 __generic_file_write_iter+0x224/0x530 mm/filemap.c:3481
 ext4_file_write_iter+0x499/0x10e0 fs/ext4/file.c:270
 do_iter_readv_writev+0x591/0x7a0 fs/read_write.c:690
 do_iter_write+0x170/0x560 fs/read_write.c:970
 iter_file_splice_write+0x7b0/0xf60 fs/splice.c:746
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1176 [inline]
 free_pcp_prepare mm/page_alloc.c:1233 [inline]
 free_unref_page_prepare+0x297/0x380 mm/page_alloc.c:3085
 free_unref_page mm/page_alloc.c:3134 [inline]
 free_the_page mm/page_alloc.c:4951 [inline]
 __free_pages+0xaf/0x140 mm/page_alloc.c:4959
 __free_slab+0x221/0x2e0 mm/slub.c:1774
 free_slab mm/slub.c:1789 [inline]
 discard_slab mm/slub.c:1795 [inline]
 unfreeze_partials+0x14e/0x180 mm/slub.c:2288
 put_cpu_partial+0x44/0x180 mm/slub.c:2324
 __slab_free+0x297/0x360 mm/slub.c:2971
 qlist_free_all+0x43/0xb0 mm/kasan/quarantine.c:167
 quarantine_reduce+0x1d9/0x210 mm/kasan/quarantine.c:260
 __kasan_kmalloc+0x41/0x210 mm/kasan/common.c:507
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2829 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc_trace+0xdc/0x260 mm/slub.c:2854
 kmem_cache_alloc_node_trace include/linux/slab.h:444 [inline]
 kmalloc_node include/linux/slab.h:594 [inline]
 kzalloc_node include/linux/slab.h:701 [inline]
 __get_vm_area_node+0x183/0x310 mm/vmalloc.c:2059
 __vmalloc_node_range+0xee/0x710 mm/vmalloc.c:2494
 __vmalloc_node mm/vmalloc.c:2554 [inline]
 __vmalloc_node_flags mm/vmalloc.c:2568 [inline]
 vmalloc+0x70/0x80 mm/vmalloc.c:2593
 netlink_alloc_large_skb net/netlink/af_netlink.c:1198 [inline]
 netlink_sendmsg+0x630/0xcf0 net/netlink/af_netlink.c:1889
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 kernel_sendmsg+0xf5/0x130 net/socket.c:678
 sock_no_sendpage+0x144/0x1b0 net/core/sock.c:2778

Memory state around the buggy address:
 ffff8881b4b3fe00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881b4b3fe80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881b4b3ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                 ^
 ffff8881b4b3ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881b4b40000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs warning (device loop1): ext4_enable_quotas:6099: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop1): mount failed