EXT4-fs (loop0): revision level too high, forcing read-only mode
EXT4-fs (loop0): orphan cleanup on readonly fs
==================================================================
BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline]
BUG: KASAN: use-after-free in __ext4_iget+0x36d/0x40e0 fs/ext4/inode.c:4787
Read of size 8 at addr ffff88812c1d9ee8 by task syz.0.2623/10813

CPU: 1 PID: 10813 Comm: syz.0.2623 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0xe2/0x130 mm/kasan/report.c:452
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 check_igot_inode fs/ext4/inode.c:-1 [inline]
 __ext4_iget+0x36d/0x40e0 fs/ext4/inode.c:4787
 ext4_quota_enable fs/ext4/super.c:6447 [inline]
 ext4_enable_quotas+0x33b/0x6d0 fs/ext4/super.c:6483
 ext4_orphan_cleanup+0x2d4/0xd30 fs/ext4/super.c:3046
 ext4_fill_super+0x845b/0x8b60 fs/ext4/super.c:5075
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6662
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2997
 path_mount+0x572/0xc80 fs/namespace.c:3327
 do_mount fs/namespace.c:3340 [inline]
 __do_sys_mount fs/namespace.c:3548 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3525
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3525
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7ff9e006766a
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:00007ff9dea8be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff9dea8bef0 RCX: 00007ff9e006766a
RDX: 0000200000000140 RSI: 0000200000000080 RDI: 00007ff9dea8beb0
RBP: 0000200000000140 R08: 00007ff9dea8bef0 R09: 0000000000000c10
R10: 0000000000000c10 R11: 0000000000000246 R12: 0000200000000080
R13: 00007ff9dea8beb0 R14: 0000000000000620 R15: 0000200000000000

Allocated by task 9084:
 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:430 [inline]
 __kasan_slab_alloc+0xbd/0xf0 mm/kasan/common.c:463
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x5d/0x2f0 mm/slab.h:580
 slab_alloc_node mm/slub.c:2952 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 kmem_cache_alloc+0x165/0x2e0 mm/slub.c:2965
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2785 [inline]
 f2fs_alloc_inode+0x26/0x410 fs/f2fs/super.c:1392
 alloc_inode fs/inode.c:233 [inline]
 iget_locked+0x146/0x7d0 fs/inode.c:1275
 f2fs_iget+0x55/0x4ed0 fs/f2fs/inode.c:505
 f2fs_fill_super+0x39f0/0x6c70 fs/f2fs/super.c:4240
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4595
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2997
 path_mount+0x572/0xc80 fs/namespace.c:3327
 do_mount fs/namespace.c:3340 [inline]
 __do_sys_mount fs/namespace.c:3548 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3525
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3525
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

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 kernel/rcu/tree.c:2980 [inline]
 call_rcu+0x10e/0x1050 kernel/rcu/tree.c:3054
 destroy_inode fs/inode.c:288 [inline]
 evict+0x857/0x910 fs/inode.c:629
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_put_super+0x68a/0xc00 fs/f2fs/super.c:1633
 generic_shutdown_super+0x149/0x320 fs/super.c:465
 kill_block_super+0x7f/0xf0 fs/super.c:1469
 kill_f2fs_super+0x2e7/0x390 fs/f2fs/super.c:4627
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x446/0x500 fs/namespace.c:1114
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1121
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

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 kernel/rcu/tree.c:2980 [inline]
 call_rcu+0x10e/0x1050 kernel/rcu/tree.c:3054
 destroy_inode fs/inode.c:288 [inline]
 evict+0x857/0x910 fs/inode.c:629
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5453/0x6c70 fs/f2fs/super.c:4549
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4595
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2997
 path_mount+0x572/0xc80 fs/namespace.c:3327
 do_mount fs/namespace.c:3340 [inline]
 __do_sys_mount fs/namespace.c:3548 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3525
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3525
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff88812c1d99c0
 which belongs to the cache f2fs_inode_cache of size 1520
The buggy address is located 1320 bytes inside of
 1520-byte region [ffff88812c1d99c0, ffff88812c1d9fb0)
The buggy address belongs to the page:
page:ffffea0004b07600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812c1dad10 pfn:0x12c1d8
head:ffffea0004b07600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff8881029d2180
raw: ffff88812c1dad10 0000000080130006 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 821, ts 50159521961, 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+0x179/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2235/0x23d0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5370
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2a6/0x450 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 kmem_cache_alloc+0x1af/0x2e0 mm/slub.c:2965
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2785 [inline]
 f2fs_alloc_inode+0x26/0x410 fs/f2fs/super.c:1392
 alloc_inode fs/inode.c:233 [inline]
 iget_locked+0x146/0x7d0 fs/inode.c:1275
 f2fs_iget+0x55/0x4ed0 fs/f2fs/inode.c:505
 f2fs_fill_super+0x39f0/0x6c70 fs/f2fs/super.c:4240
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4595
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2997
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88812c1d9d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812c1d9e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812c1d9e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff88812c1d9f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812c1d9f80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs warning (device loop0): ext4_enable_quotas:6491: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop0): Cannot turn on quotas: error -13
EXT4-fs error (device loop0): ext4_free_blocks:5685: comm syz.0.2623: Freeing blocks not in datazone - block = 0, count = 4096
EXT4-fs (loop0): 1 orphan inode deleted
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue