EXT4-fs (loop2): revision level too high, forcing read-only mode
EXT4-fs (loop2): 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+0x381/0x44b0 fs/ext4/inode.c:4793
Read of size 8 at addr ffff88812fe72558 by task syz.2.1114/5063

CPU: 0 PID: 5063 Comm: syz.2.1114 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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+0x381/0x44b0 fs/ext4/inode.c:4793
 ext4_quota_enable fs/ext4/super.c:6445 [inline]
 ext4_enable_quotas+0x33b/0x6d0 fs/ext4/super.c:6481
 ext4_orphan_cleanup+0x2d4/0xd30 fs/ext4/super.c:3046
 ext4_fill_super+0x8452/0x8b60 fs/ext4/super.c:5073
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6660
 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:3006
 path_mount+0x572/0xc80 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f32e1b1eeea
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:00007f32e0584e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f32e0584ef0 RCX: 00007f32e1b1eeea
RDX: 0000200000000100 RSI: 0000200000000080 RDI: 00007f32e0584eb0
RBP: 0000200000000100 R08: 00007f32e0584ef0 R09: 0000000003000010
R10: 0000000003000010 R11: 0000000000000246 R12: 0000200000000080
R13: 00007f32e0584eb0 R14: 0000000000000512 R15: 00002000000001c0

Allocated by task 3761:
 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:2786 [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+0x55/0x4b60 fs/f2fs/inode.c:505
 f2fs_fill_super+0x468e/0x6c70 fs/f2fs/super.c:4356
 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:3006
 path_mount+0x572/0xc80 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 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
 dispose_list fs/inode.c:647 [inline]
 evict_inodes+0x5d4/0x640 fs/inode.c:701
 generic_shutdown_super+0x96/0x320 fs/super.c:454
 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:1123
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1130
 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_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:1123
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1130
 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

The buggy address belongs to the object at ffff88812fe72030
 which belongs to the cache f2fs_inode_cache of size 1520
The buggy address is located 1320 bytes inside of
 1520-byte region [ffff88812fe72030, ffff88812fe72620)
The buggy address belongs to the page:
page:ffffea0004bf9c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812fe74d40 pfn:0x12fe70
head:ffffea0004bf9c00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 0000000000000000 0000000100000001 ffff8881027a6a80
raw: ffff88812fe74d40 0000000080130001 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 2186, ts 88154537555, free_ts 44052880267
 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:2786 [inline]
 f2fs_alloc_inode+0x26/0x410 fs/f2fs/super.c:1392
 alloc_inode fs/inode.c:233 [inline]
 new_inode_pseudo+0x62/0x210 fs/inode.c:968
 new_inode+0x28/0x1e0 fs/inode.c:997
 f2fs_new_inode+0xea/0x13e0 fs/f2fs/namei.c:35
 f2fs_mkdir+0x17d/0x680 fs/f2fs/namei.c:767
 vfs_mkdir+0x4c7/0x6a0 fs/namei.c:3798
 do_mkdirat+0x14c/0x340 fs/namei.c:3820
 __do_sys_mkdirat fs/namei.c:3831 [inline]
 __se_sys_mkdirat fs/namei.c:3829 [inline]
 __x64_sys_mkdirat+0x7b/0x90 fs/namei.c:3829
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 __free_pages_ok+0x7fc/0x820 mm/page_alloc.c:1629
 free_the_page mm/page_alloc.c:5431 [inline]
 __free_pages+0xdd/0x380 mm/page_alloc.c:5440
 free_pages+0x82/0x90 mm/page_alloc.c:5451
 hcd_buffer_free_pages+0xf5/0x160 drivers/usb/core/buffer.c:208
 dec_usb_memory_use_count+0x26a/0x340 drivers/usb/core/devio.c:185
 usbdev_vm_close+0x3f/0x50 drivers/usb/core/devio.c:209
 vma_close+0x72/0xb0 mm/util.c:1105
 remove_vma mm/mmap.c:204 [inline]
 exit_mmap+0x399/0x540 mm/mmap.c:3393
 __mmput+0x93/0x2f0 kernel/fork.c:1153
 mmput+0x4e/0x150 kernel/fork.c:1176
 exit_mm kernel/exit.c:539 [inline]
 do_exit+0x9ae/0x2480 kernel/exit.c:859
 do_group_exit+0x141/0x310 kernel/exit.c:986
 get_signal+0xf7d/0x12e0 kernel/signal.c:2793
 arch_do_signal_or_restart+0xbf/0x10f0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0xa2/0xe0 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199

Memory state around the buggy address:
 ffff88812fe72400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812fe72480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812fe72500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff88812fe72580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812fe72600: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs warning (device loop2): ext4_enable_quotas:6489: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop2): Cannot turn on quotas: error -13
EXT4-fs error (device loop2) in ext4_do_update_inode:5350: error 27
EXT4-fs error (device loop2): ext4_dirty_inode:6157: inode #16: comm syz.2.1114: mark_inode_dirty error
EXT4-fs error (device loop2) in ext4_do_update_inode:5350: error 27
EXT4-fs error (device loop2): __ext4_ext_dirty:182: inode #16: comm syz.2.1114: mark_inode_dirty error
EXT4-fs error (device loop2) in ext4_do_update_inode:5350: error 27
EXT4-fs error (device loop2) in ext4_orphan_del:3292: error 27
EXT4-fs error (device loop2) in ext4_do_update_inode:5350: error 27
EXT4-fs error (device loop2): ext4_truncate:4396: inode #16: comm syz.2.1114: mark_inode_dirty error
EXT4-fs error (device loop2) in ext4_orphan_cleanup:3108: error 27
EXT4-fs (loop2): 1 truncate cleaned up
EXT4-fs (loop2): mounted filesystem without journal. Opts: resgid=0x0000000000000000,nodioread_nolock,,errors=continue