==================================================================
BUG: KASAN: use-after-free in __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4683
Read of size 8 at addr ffff88812b376608 by task syz.6.12195/9487

CPU: 0 PID: 9487 Comm: syz.6.12195 Not tainted 5.15.173-syzkaller-00123-g6f0de8f8a165 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1c0 lib/dump_stack.c:106
 print_address_description+0x87/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:444
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4683
 ext4_quota_enable fs/ext4/super.c:6379 [inline]
 ext4_enable_quotas+0x556/0x980 fs/ext4/super.c:6415
 ext4_fill_super+0x8b95/0x96e0 fs/ext4/super.c:4951
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 ext4_mount+0x34/0x40 fs/ext4/super.c:6594
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1530
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012
 path_mount+0x671/0x1070 fs/namespace.c:3342
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540
 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f71782f44ba
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:00007f7176963e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7176963ef0 RCX: 00007f71782f44ba
RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007f7176963eb0
RBP: 0000000020000080 R08: 00007f7176963ef0 R09: 000000000020081e
R10: 000000000020081e R11: 0000000000000246 R12: 0000000020000100
R13: 00007f7176963eb0 R14: 00000000000004f4 R15: 0000000020000040
 </TASK>

Allocated by task 22885:
 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+0xb1/0xe0 mm/kasan/common.c:466
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3240 [inline]
 slab_alloc mm/slub.c:3248 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3253
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2801 [inline]
 f2fs_alloc_inode+0x26/0x340 fs/f2fs/super.c:1406
 alloc_inode fs/inode.c:236 [inline]
 iget_locked+0x174/0x860 fs/inode.c:1283
 f2fs_iget+0x55/0x4fe0 fs/f2fs/inode.c:512
 f2fs_fill_super+0x66aa/0x8190 fs/f2fs/super.c:4374
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4623
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1530
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012
 path_mount+0x671/0x1070 fs/namespace.c:3342
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540
 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu_common kernel/rcu/tree.c:3007 [inline]
 call_rcu+0x123/0x10b0 kernel/rcu/tree.c:3125
 destroy_inode fs/inode.c:291 [inline]
 evict+0x87d/0x930 fs/inode.c:637
 iput_final fs/inode.c:1744 [inline]
 iput+0x63b/0x7e0 fs/inode.c:1770
 f2fs_put_super+0x632/0xc10 fs/f2fs/super.c:1635
 generic_shutdown_super+0x14f/0x330 fs/super.c:475
 kill_block_super+0x7e/0xe0 fs/super.c:1427
 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4655
 deactivate_locked_super+0xad/0x110 fs/super.c:335
 deactivate_super+0xbe/0xf0 fs/super.c:366
 cleanup_mnt+0x45c/0x510 fs/namespace.c:1143
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150
 task_work_run+0x129/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:880
 do_group_exit+0x141/0x310 kernel/exit.c:1002
 get_signal+0x7a3/0x1630 kernel/signal.c:2907
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 exc_page_fault+0x47a/0x7f0 arch/x86/mm/fault.c:1568
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:606

Second to last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu_common kernel/rcu/tree.c:3007 [inline]
 call_rcu+0x123/0x10b0 kernel/rcu/tree.c:3125
 destroy_inode fs/inode.c:291 [inline]
 evict+0x87d/0x930 fs/inode.c:637
 iput_final fs/inode.c:1744 [inline]
 iput+0x63b/0x7e0 fs/inode.c:1770
 f2fs_put_super+0x683/0xc10 fs/f2fs/super.c:1638
 generic_shutdown_super+0x14f/0x330 fs/super.c:475
 kill_block_super+0x7e/0xe0 fs/super.c:1427
 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4655
 deactivate_locked_super+0xad/0x110 fs/super.c:335
 deactivate_super+0xbe/0xf0 fs/super.c:366
 cleanup_mnt+0x45c/0x510 fs/namespace.c:1143
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150
 task_work_run+0x129/0x190 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff88812b376100
 which belongs to the cache f2fs_inode_cache of size 1424
The buggy address is located 1288 bytes inside of
 1424-byte region [ffff88812b376100, ffff88812b376690)
The buggy address belongs to the page:
page:ffffea0004acdc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812b376d20 pfn:0x12b370
head:ffffea0004acdc00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea0004d1ec00 0000000400000004 ffff8881029c4d80
raw: ffff88812b376d20 0000000080150001 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 1192, ts 60658636126, free_ts 57896424948
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485
 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5779
 allocate_slab mm/slub.c:1932 [inline]
 new_slab+0x9a/0x4e0 mm/slub.c:1995
 ___slab_alloc+0x39e/0x830 mm/slub.c:3028
 __slab_alloc+0x4a/0x90 mm/slub.c:3115
 slab_alloc_node mm/slub.c:3206 [inline]
 slab_alloc mm/slub.c:3248 [inline]
 kmem_cache_alloc+0x134/0x200 mm/slub.c:3253
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2801 [inline]
 f2fs_alloc_inode+0x26/0x340 fs/f2fs/super.c:1406
 alloc_inode fs/inode.c:236 [inline]
 new_inode_pseudo+0x64/0x220 fs/inode.c:976
 new_inode+0x28/0x1c0 fs/inode.c:1005
 f2fs_new_inode+0x10e/0x1410 fs/f2fs/namei.c:36
 f2fs_create+0x178/0x1510 fs/f2fs/namei.c:358
 lookup_open fs/namei.c:3462 [inline]
 open_last_lookups fs/namei.c:3532 [inline]
 path_openat+0x13a8/0x2f40 fs/namei.c:3739
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13f/0x820 fs/open.c:1234
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534
 free_unref_page+0xe8/0x750 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5855
 __free_slab+0xec/0x1d0 mm/slub.c:2020
 free_slab mm/slub.c:2035 [inline]
 discard_slab mm/slub.c:2041 [inline]
 __unfreeze_partials+0x165/0x1a0 mm/slub.c:2527
 put_cpu_partial+0xc4/0x120 mm/slub.c:2607
 __slab_free+0x1c8/0x290 mm/slub.c:3388
 do_slab_free mm/slub.c:3507 [inline]
 ___cache_free+0x109/0x120 mm/slub.c:3526
 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x44/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3240 [inline]
 slab_alloc mm/slub.c:3248 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3253
 getname_flags+0xba/0x520 fs/namei.c:138
 user_path_at_empty+0x2d/0x1a0 fs/namei.c:2882

Memory state around the buggy address:
 ffff88812b376500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812b376580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812b376600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88812b376680: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88812b376700: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs error (device loop6): ext4_quota_enable:6379: inode #3: comm syz.6.12195: unexpected EA_INODE flag
EXT4-fs error (device loop6): ext4_quota_enable:6382: comm syz.6.12195: Bad quota inode: 3, type: 0
EXT4-fs warning (device loop6): ext4_enable_quotas:6423: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix.
EXT4-fs (loop6): mount failed
loop6: detected capacity change from 0 to 1024
EXT4-fs (loop6): unsupported inode size: 7
EXT4-fs (loop6): blocksize: 1024