==================================================================
BUG: KASAN: use-after-free in __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4738
Read of size 8 at addr ffff88812939d8d8 by task syz.0.4588/19437

CPU: 0 PID: 19437 Comm: syz.0.4588 Tainted: G        W         5.10.216-syzkaller-00510-ga4a2b7a82ee4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:452
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4738
 ext4_quota_enable fs/ext4/super.c:6423 [inline]
 ext4_enable_quotas+0x56f/0x9f0 fs/ext4/super.c:6459
 ext4_fill_super+0x86dc/0x9150 fs/ext4/super.c:5060
 mount_bdev+0x262/0x370 fs/super.c:1429
 ext4_mount+0x34/0x40 fs/ext4/super.c:6638
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1559
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910
 path_mount+0x56f/0xcb0 fs/namespace.c:3240
 do_mount fs/namespace.c:3253 [inline]
 __do_sys_mount fs/namespace.c:3461 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3438
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3438
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f1a2886129a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 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:00007f1a27ae0e78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1a27ae0f00 RCX: 00007f1a2886129a
RDX: 0000000020000080 RSI: 0000000020000140 RDI: 00007f1a27ae0ec0
RBP: 0000000020000080 R08: 00007f1a27ae0f00 R09: 0000000002000040
R10: 0000000002000040 R11: 0000000000000206 R12: 0000000020000140
R13: 00007f1a27ae0ec0 R14: 00000000000004d2 R15: 000000000000002c

Allocated by task 19323:
 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+0xb1/0xe0 mm/kasan/common.c:463
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
 slab_alloc_node mm/slub.c:2947 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2776 [inline]
 f2fs_alloc_inode+0x26/0x420 fs/f2fs/super.c:1373
 alloc_inode fs/inode.c:233 [inline]
 iget_locked+0x14f/0x870 fs/inode.c:1236
 f2fs_iget+0x55/0x4da0 fs/f2fs/inode.c:489
 f2fs_fill_super+0x64c2/0x7e30 fs/f2fs/super.c:4316
 mount_bdev+0x262/0x370 fs/super.c:1429
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4555
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1559
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910
 path_mount+0x56f/0xcb0 fs/namespace.c:3240
 do_mount fs/namespace.c:3253 [inline]
 __do_sys_mount fs/namespace.c:3461 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3438
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3438
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6

Freed by task 12:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x121/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1595 [inline]
 slab_free_freelist_hook+0xc0/0x190 mm/slub.c:1621
 slab_free mm/slub.c:3203 [inline]
 kmem_cache_free+0xa9/0x1e0 mm/slub.c:3219
 f2fs_free_inode+0x24/0x30 fs/f2fs/super.c:1528
 i_callback+0x4b/0x70 fs/inode.c:222
 rcu_do_batch+0x597/0xc40 kernel/rcu/tree.c:2494
 rcu_core+0x5ad/0xe40 kernel/rcu/tree.c:2735
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2748
 __do_softirq+0x268/0x5bb kernel/softirq.c:309

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu kernel/rcu/tree.c:2976 [inline]
 call_rcu+0x135/0x11f0 kernel/rcu/tree.c:3050
 destroy_inode fs/inode.c:288 [inline]
 evict+0x648/0x6c0 fs/inode.c:594
 dispose_list fs/inode.c:612 [inline]
 evict_inodes+0x5d1/0x650 fs/inode.c:662
 generic_shutdown_super+0x9c/0x2d0 fs/super.c:454
 kill_block_super+0x7e/0xe0 fs/super.c:1456
 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4587
 deactivate_locked_super+0xad/0x110 fs/super.c:335
 deactivate_super+0xbe/0xf0 fs/super.c:366
 cleanup_mnt+0x45c/0x510 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x129/0x190 kernel/task_work.c:165
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xbf/0xd0 kernel/entry/common.c:172
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274
 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xc6

Second to last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu kernel/rcu/tree.c:2976 [inline]
 call_rcu+0x135/0x11f0 kernel/rcu/tree.c:3050
 destroy_inode fs/inode.c:288 [inline]
 evict+0x648/0x6c0 fs/inode.c:594
 dispose_list fs/inode.c:612 [inline]
 evict_inodes+0x5d1/0x650 fs/inode.c:662
 generic_shutdown_super+0x9c/0x2d0 fs/super.c:454
 kill_block_super+0x7e/0xe0 fs/super.c:1456
 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4587
 deactivate_locked_super+0xad/0x110 fs/super.c:335
 deactivate_super+0xbe/0xf0 fs/super.c:366
 cleanup_mnt+0x45c/0x510 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x129/0x190 kernel/task_work.c:165
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xbf/0xd0 kernel/entry/common.c:172
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274
 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xc6

The buggy address belongs to the object at ffff88812939d3b0
 which belongs to the cache f2fs_inode_cache of size 1520
The buggy address is located 1320 bytes inside of
 1520-byte region [ffff88812939d3b0, ffff88812939d9a0)
The buggy address belongs to the page:
page:ffffea0004a4e600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888129398000 pfn:0x129398
head:ffffea0004a4e600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 ffffea0004bc8400 0000000500000005 ffff88810278ad80
raw: ffff888129398000 0000000080130012 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 623, ts 36727132100, 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+0x166/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5348
 allocate_slab mm/slub.c:1808 [inline]
 new_slab+0x80/0x400 mm/slub.c:1869
 new_slab_objects mm/slub.c:2627 [inline]
 ___slab_alloc+0x302/0x4b0 mm/slub.c:2791
 __slab_alloc+0x63/0xa0 mm/slub.c:2831
 slab_alloc_node mm/slub.c:2913 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:2960
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2776 [inline]
 f2fs_alloc_inode+0x26/0x420 fs/f2fs/super.c:1373
 alloc_inode fs/inode.c:233 [inline]
 iget_locked+0x14f/0x870 fs/inode.c:1236
 f2fs_iget+0x55/0x4da0 fs/f2fs/inode.c:489
 f2fs_fill_super+0x4c90/0x7e30 fs/f2fs/super.c:4200
 mount_bdev+0x262/0x370 fs/super.c:1429
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4555
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1559
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88812939d780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812939d800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812939d880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff88812939d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812939d980: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs warning (device loop0): ext4_enable_quotas:6467: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop0): mount failed