loop1: detected capacity change from 0 to 4096
==================================================================
BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline]
BUG: KASAN: use-after-free in __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4710
Read of size 8 at addr ffff888111dff228 by task syz.1.2077/7532

CPU: 1 PID: 7532 Comm: syz.1.2077 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0xf1/0x140 mm/kasan/report.c:444
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 check_igot_inode fs/ext4/inode.c:-1 [inline]
 __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4710
 ext4_quota_enable fs/ext4/super.c:6409 [inline]
 ext4_enable_quotas+0x33c/0x6d0 fs/ext4/super.c:6445
 ext4_fill_super+0x87a6/0x9080 fs/ext4/super.c:4952
 mount_bdev+0x2ae/0x3e0 fs/super.c:1400
 ext4_mount+0x34/0x40 fs/ext4/super.c:6624
 legacy_get_tree+0xed/0x190 fs/fs_context.c:611
 vfs_get_tree+0x89/0x260 fs/super.c:1530
 do_new_mount+0x25a/0xa20 fs/namespace.c:3034
 path_mount+0x659/0xff0 fs/namespace.c:3364
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3562
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562
 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fee5ca6e14a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fee5b4c8e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fee5b4c8ee0 RCX: 00007fee5ca6e14a
RDX: 0000200000000bc0 RSI: 0000200000000240 RDI: 00007fee5b4c8ea0
RBP: 0000200000000bc0 R08: 00007fee5b4c8ee0 R09: 0000000000004000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000200000000240
R13: 00007fee5b4c8ea0 R14: 0000000000000bb8 R15: 0000200000000000
 </TASK>

Allocated by task 4948:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 __kasan_slab_alloc+0xbd/0xf0 mm/kasan/common.c:466
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3245 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2820 [inline]
 f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1459
 alloc_inode fs/inode.c:264 [inline]
 iget_locked+0x16c/0x7e0 fs/inode.c:1318
 f2fs_iget+0x55/0x5060 fs/f2fs/inode.c:517
 f2fs_fill_super+0x3cbc/0x6d70 fs/f2fs/super.c:4345
 mount_bdev+0x2ae/0x3e0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4705
 legacy_get_tree+0xed/0x190 fs/fs_context.c:611
 vfs_get_tree+0x89/0x260 fs/super.c:1530
 do_new_mount+0x25a/0xa20 fs/namespace.c:3034
 path_mount+0x659/0xff0 fs/namespace.c:3364
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3562
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562
 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd2/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu_common kernel/rcu/tree.c:3011 [inline]
 call_rcu+0x10b/0xf80 kernel/rcu/tree.c:3129
 destroy_inode fs/inode.c:319 [inline]
 evict+0x834/0x8d0 fs/inode.c:665
 iput_final fs/inode.c:1779 [inline]
 iput+0x635/0x7c0 fs/inode.c:1805
 f2fs_fill_super+0x575d/0x6d70 fs/f2fs/super.c:4659
 mount_bdev+0x2ae/0x3e0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4705
 legacy_get_tree+0xed/0x190 fs/fs_context.c:611
 vfs_get_tree+0x89/0x260 fs/super.c:1530
 do_new_mount+0x25a/0xa20 fs/namespace.c:3034
 path_mount+0x659/0xff0 fs/namespace.c:3364
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3562
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562
 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Second to last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd2/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu_common kernel/rcu/tree.c:3011 [inline]
 call_rcu+0x10b/0xf80 kernel/rcu/tree.c:3129
 destroy_inode fs/inode.c:319 [inline]
 evict+0x834/0x8d0 fs/inode.c:665
 iput_final fs/inode.c:1779 [inline]
 iput+0x635/0x7c0 fs/inode.c:1805
 f2fs_put_super+0x661/0xc20 fs/f2fs/super.c:1690
 generic_shutdown_super+0x151/0x330 fs/super.c:475
 kill_block_super+0x7f/0xf0 fs/super.c:1427
 kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4737
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x45b/0x510 fs/namespace.c:1148
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1155
 task_work_run+0x127/0x190 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff888111dfed20
 which belongs to the cache f2fs_inode_cache of size 1424
The buggy address is located 1288 bytes inside of
 1424-byte region [ffff888111dfed20, ffff888111dff2b0)
The buggy address belongs to the page:
page:ffffea0004477e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888111dfced0 pfn:0x111df8
head:ffffea0004477e00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 0000000100000001 ffff8881003e8d80
raw: ffff888111dfced0 000000008015000b 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 520, ts 33891789112, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x2d3a/0x2dc0 mm/page_alloc.c:4485
 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5808
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1937 [inline]
 new_slab+0xa1/0x4d0 mm/slub.c:2000
 ___slab_alloc+0x381/0x810 mm/slub.c:3033
 __slab_alloc+0x49/0x90 mm/slub.c:3120
 slab_alloc_node mm/slub.c:3211 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc+0x138/0x260 mm/slub.c:3260
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2820 [inline]
 f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1459
 alloc_inode fs/inode.c:264 [inline]
 iget_locked+0x16c/0x7e0 fs/inode.c:1318
 f2fs_iget+0x55/0x5060 fs/f2fs/inode.c:517
 f2fs_fill_super+0x4a20/0x6d70 fs/f2fs/super.c:4456
 mount_bdev+0x2ae/0x3e0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4705
 legacy_get_tree+0xed/0x190 fs/fs_context.c:611
 vfs_get_tree+0x89/0x260 fs/super.c:1530
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888111dff100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888111dff180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888111dff200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff888111dff280: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
 ffff888111dff300: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs warning (device loop1): ext4_enable_quotas:6453: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop1): mount failed