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BUG: KASAN: slab-use-after-free in ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1445 [inline]
BUG: KASAN: slab-use-after-free in ocfs2_claim_suballoc_bits+0x10d3/0x2560 fs/ocfs2/suballoc.c:1982
Read of size 4 at addr ffff888034342000 by task syz.7.139/7052

CPU: 1 UID: 0 PID: 7052 Comm: syz.7.139 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:489
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1445 [inline]
 ocfs2_claim_suballoc_bits+0x10d3/0x2560 fs/ocfs2/suballoc.c:1982
 ocfs2_claim_metadata+0x16d/0x580 fs/ocfs2/suballoc.c:2057
 ocfs2_dx_dir_attach_index+0x231/0xf90 fs/ocfs2/dir.c:2308
 ocfs2_expand_inline_dir fs/ocfs2/dir.c:3000 [inline]
 ocfs2_extend_dir+0x439f/0x53c0 fs/ocfs2/dir.c:3182
 ocfs2_prepare_dir_for_insert+0x33b5/0x5c40 fs/ocfs2/dir.c:4287
 ocfs2_mknod+0xcaf/0x2b30 fs/ocfs2/namei.c:294
 vfs_mknod+0x36d/0x3b0 fs/namei.c:4189
 do_mknodat+0x3ec/0x5b0
 __do_sys_mknod fs/namei.c:4272 [inline]
 __se_sys_mknod fs/namei.c:4270 [inline]
 __x64_sys_mknod+0x8c/0xa0 fs/namei.c:4270
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc67bb85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fc67c9fd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007fc67bd75fa0 RCX: 00007fc67bb85d29
RDX: 000000000000070f RSI: 0000000000002000 RDI: 0000000020000000
RBP: 00007fc67bc01aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc67bd75fa0 R15: 00007ffe8e2a62a8
 </TASK>

Allocated by task 6429:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4119 [inline]
 slab_alloc_node mm/slub.c:4168 [inline]
 kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175
 alloc_empty_file+0x9e/0x1d0 fs/file_table.c:228
 path_openat+0x107/0x3590 fs/namei.c:3973
 do_filp_open+0x27f/0x4e0 fs/namei.c:4014
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_sys_openat fs/open.c:1433 [inline]
 __se_sys_openat fs/open.c:1428 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1428
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 16:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free_after_rcu_debug+0x11a/0x280 mm/slub.c:4663
 rcu_do_batch kernel/rcu/tree.c:2567 [inline]
 rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544
 slab_free_hook mm/slub.c:2314 [inline]
 slab_free mm/slub.c:4613 [inline]
 kmem_cache_free+0x2fb/0x410 mm/slub.c:4715
 __do_sys_close fs/open.c:1554 [inline]
 __se_sys_close fs/open.c:1539 [inline]
 __x64_sys_close+0x7f/0x110 fs/open.c:1539
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888034342000
 which belongs to the cache filp of size 360
The buggy address is located 0 bytes inside of
 freed 360-byte region [ffff888034342000, ffff888034342168)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880343436c0 pfn:0x34342
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888024d12901
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801baffc80 ffffea0000cea990 ffffea0000d20990
raw: ffff8880343436c0 0000000000120003 00000001f5000000 ffff888024d12901
head: 00fff00000000240 ffff88801baffc80 ffffea0000cea990 ffffea0000d20990
head: ffff8880343436c0 0000000000120003 00000001f5000000 ffff888024d12901
head: 00fff00000000001 ffffea0000d0d081 ffffffffffffffff 0000000000000000
head: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5157, tgid 5157 (mount), ts 17551417747, free_ts 14172128703
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269
 alloc_slab_page+0x6a/0x110 mm/slub.c:2423
 allocate_slab+0x5a/0x2b0 mm/slub.c:2589
 new_slab mm/slub.c:2642 [inline]
 ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830
 __slab_alloc+0x58/0xa0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 kmem_cache_alloc_noprof+0x268/0x380 mm/slub.c:4175
 alloc_empty_file+0x9e/0x1d0 fs/file_table.c:228
 path_openat+0x107/0x3590 fs/namei.c:3973
 do_filp_open+0x27f/0x4e0 fs/namei.c:4014
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_sys_openat fs/open.c:1433 [inline]
 __se_sys_openat fs/open.c:1428 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1428
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 878 tgid 878 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0xd2c/0x1000 mm/page_alloc.c:2659
 vfree+0x1c3/0x360 mm/vmalloc.c:3383
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3303
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888034341f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888034341f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888034342000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888034342080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888034342100: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
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