=========================================================[  168.600721][    T9] ==================================================================
BUG: KASAN: slab-use-after-free in inode_state_read_once include/linux/fs.h:884 [inline]
BUG: KASAN: slab-use-after-free in iput+0x3a7/0xe80 fs/inode.c:1986
Read of size 4 at addr ffff88805ff83ea8 by task kworker/0:0/9

CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events fserror_worker
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 inode_state_read_once include/linux/fs.h:884 [inline]
 iput+0x3a7/0xe80 fs/inode.c:1986
 fserror_worker+0x230/0x350 fs/fserror.c:69
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 6614:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 unpoison_slab_object mm/kasan/common.c:340 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4501 [inline]
 slab_alloc_node mm/slub.c:4830 [inline]
 kmem_cache_alloc_lru_noprof+0x33c/0x680 mm/slub.c:4849
 xfs_inode_alloc+0x7e/0x670 fs/xfs/xfs_icache.c:97
 xfs_iget_cache_miss fs/xfs/xfs_icache.c:635 [inline]
 xfs_iget+0xa68/0x2dd0 fs/xfs/xfs_icache.c:799
 xfs_lookup+0x321/0x670 fs/xfs/xfs_inode.c:553
 xfs_vn_lookup+0x130/0x200 fs/xfs/xfs_iops.c:327
 lookup_one_qstr_excl+0x131/0x360 fs/namei.c:1805
 __start_dirop fs/namei.c:2925 [inline]
 start_dirop fs/namei.c:2934 [inline]
 filename_create+0x20e/0x370 fs/namei.c:4922
 filename_mkdirat+0xd2/0x520 fs/namei.c:5259
 __do_sys_mkdirat fs/namei.c:5287 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5284
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 20:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2687 [inline]
 slab_free mm/slub.c:6124 [inline]
 kmem_cache_free+0x185/0x6b0 mm/slub.c:6254
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core kernel/rcu/tree.c:2869 [inline]
 rcu_cpu_kthread+0x99e/0x1470 kernel/rcu/tree.c:2957
 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Last potentially related work creation:
 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:57
 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:556
 __call_rcu_common kernel/rcu/tree.c:3131 [inline]
 call_rcu+0xee/0x890 kernel/rcu/tree.c:3251
 xfs_iget_cache_miss fs/xfs/xfs_icache.c:740 [inline]
 xfs_iget+0xade/0x2dd0 fs/xfs/xfs_icache.c:799
 xfs_lookup+0x321/0x670 fs/xfs/xfs_inode.c:553
 xfs_vn_lookup+0x130/0x200 fs/xfs/xfs_iops.c:327
 lookup_one_qstr_excl+0x131/0x360 fs/namei.c:1805
 __start_dirop fs/namei.c:2925 [inline]
 start_dirop fs/namei.c:2934 [inline]
 filename_create+0x20e/0x370 fs/namei.c:4922
 filename_mkdirat+0xd2/0x520 fs/namei.c:5259
 __do_sys_mkdirat fs/namei.c:5287 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5284
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88805ff83b80
 which belongs to the cache xfs_inode of size 2032
The buggy address is located 808 bytes inside of
 freed 2032-byte region [ffff88805ff83b80, ffff88805ff84370)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805ff80000 pfn:0x5ff80
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88805ff87f81
flags: 0x80000000000240(workingset|head|node=0|zone=1)
page_type: f5(slab)
raw: 0080000000000240 ffff888140432c80 ffffea00017f8610 ffffea0001920e10
raw: ffff88805ff80000 00000008000f000c 00000000f5000000 ffff88805ff87f81
head: 0080000000000240 ffff888140432c80 ffffea00017f8610 ffffea0001920e10
head: ffff88805ff80000 00000008000f000c 00000000f5000000 ffff88805ff87f81
head: 0080000000000003 ffffea00017fe001 00000000ffffffff 00000000ffffffff
head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0xd2050(__GFP_RECLAIMABLE|__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5975, tgid 5952 (syz.1.10), ts 105416766299, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
 prep_new_page mm/page_alloc.c:1897 [inline]
 get_page_from_freelist+0x28bb/0x2950 mm/page_alloc.c:3962
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
 alloc_slab_page mm/slub.c:3255 [inline]
 allocate_slab+0x77/0x660 mm/slub.c:3444
 new_slab mm/slub.c:3502 [inline]
 refill_objects+0x334/0x3c0 mm/slub.c:7134
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x328/0x5f0 mm/slub.c:4578
 alloc_from_pcs mm/slub.c:4681 [inline]
 slab_alloc_node mm/slub.c:4815 [inline]
 kmem_cache_alloc_lru_noprof+0x433/0x680 mm/slub.c:4849
 xfs_inode_alloc+0x7e/0x670 fs/xfs/xfs_icache.c:97
 xfs_iget_cache_miss fs/xfs/xfs_icache.c:635 [inline]
 xfs_iget+0xa68/0x2dd0 fs/xfs/xfs_icache.c:799
 xfs_icreate+0xbe/0x170 fs/xfs/xfs_inode.c:600
 xfs_create+0x648/0xb30 fs/xfs/xfs_inode.c:721
 xfs_generic_create+0x413/0xb30 fs/xfs/xfs_iops.c:216
 lookup_open fs/namei.c:4483 [inline]
 open_last_lookups fs/namei.c:4583 [inline]
 path_openat+0x13b4/0x38a0 fs/namei.c:4827
 do_file_open+0x23e/0x4a0 fs/namei.c:4859
 do_sys_openat2+0x113/0x200 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1383
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88805ff83d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805ff83e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88805ff83e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff88805ff83f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805ff83f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================