loop4: detected capacity change from 0 to 512
==================================================================
BUG: KASAN: slab-use-after-free in check_igot_inode+0x187/0x1b0 fs/ext4/inode.c:4622
Read of size 8 at addr ffff88808ebd8c70 by task syz-executor.4/8551

CPU: 0 PID: 8551 Comm: syz-executor.4 Not tainted 6.5.0-rc3-next-20230728-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 check_igot_inode+0x187/0x1b0 fs/ext4/inode.c:4622
 __ext4_iget+0x14fb/0x4310 fs/ext4/inode.c:4674
 __ext4_fill_super fs/ext4/super.c:5467 [inline]
 ext4_fill_super+0x64c9/0xaf30 fs/ext4/super.c:5696
 get_tree_bdev+0x390/0x6a0 fs/super.c:1345
 vfs_get_tree+0x88/0x350 fs/super.c:1521
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb0c167e22a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb0c01fdee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb0c01fdf80 RCX: 00007fb0c167e22a
RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007fb0c01fdf40
RBP: 0000000020000040 R08: 00007fb0c01fdf80 R09: 0000000000804400
R10: 0000000000804400 R11: 0000000000000202 R12: 0000000020000500
R13: 00007fb0c01fdf40 R14: 00000000000004b4 R15: 0000000020005b80
 </TASK>

Allocated by task 6957:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc_lru+0x21a/0x630 mm/slub.c:3509
 alloc_inode_sb include/linux/fs.h:2810 [inline]
 reiserfs_alloc_inode+0x26/0xb0 fs/reiserfs/super.c:642
 alloc_inode+0x5d/0x220 fs/inode.c:260
 new_inode_pseudo fs/inode.c:1018 [inline]
 new_inode+0x29/0x270 fs/inode.c:1046
 reiserfs_mkdir+0x214/0x9a0 fs/reiserfs/namei.c:813
 xattr_mkdir fs/reiserfs/xattr.c:77 [inline]
 create_privroot fs/reiserfs/xattr.c:891 [inline]
 reiserfs_xattr_init+0x57f/0xbb0 fs/reiserfs/xattr.c:1007
 reiserfs_fill_super+0x2139/0x3150 fs/reiserfs/super.c:2175
 mount_bdev+0x1f3/0x350 fs/super.c:1398
 legacy_get_tree+0x109/0x220 fs/fs_context.c:611
 vfs_get_tree+0x88/0x350 fs/super.c:1521
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Last potentially related work creation:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
 destroy_inode+0x129/0x1b0 fs/inode.c:315
 iput_final fs/inode.c:1791 [inline]
 iput.part.0+0x55e/0x7a0 fs/inode.c:1817
 iput+0x5c/0x80 fs/inode.c:1807
 reiserfs_new_inode+0x4b5/0x20b0 fs/reiserfs/inode.c:2152
 reiserfs_mkdir+0x4c0/0x9a0 fs/reiserfs/namei.c:843
 xattr_mkdir fs/reiserfs/xattr.c:77 [inline]
 create_privroot fs/reiserfs/xattr.c:891 [inline]
 reiserfs_xattr_init+0x57f/0xbb0 fs/reiserfs/xattr.c:1007
 reiserfs_fill_super+0x2139/0x3150 fs/reiserfs/super.c:2175
 mount_bdev+0x1f3/0x350 fs/super.c:1398
 legacy_get_tree+0x109/0x220 fs/fs_context.c:611
 vfs_get_tree+0x88/0x350 fs/super.c:1521
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88808ebd86a0
 which belongs to the cache reiser_inode_cache of size 1568
The buggy address is located 1488 bytes inside of
 freed 1568-byte region [ffff88808ebd86a0, ffff88808ebd8cc0)

The buggy address belongs to the physical page:
page:ffffea00023af600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88808ebda120 pfn:0x8ebd8
head:ffffea00023af600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88802c3a4501
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff8880137428c0 dead000000000122 0000000000000000
raw: ffff88808ebda120 0000000080130010 00000001ffffffff ffff88802c3a4501
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 6957, tgid 6951 (syz-executor.5), ts 478845613604, free_ts 452142612480
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1569
 prep_new_page mm/page_alloc.c:1576 [inline]
 get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3256
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4512
 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2279
 alloc_slab_page mm/slub.c:1870 [inline]
 allocate_slab+0x24e/0x380 mm/slub.c:2017
 new_slab mm/slub.c:2070 [inline]
 ___slab_alloc+0x8bc/0x1570 mm/slub.c:3223
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc_lru+0x4e4/0x630 mm/slub.c:3509
 alloc_inode_sb include/linux/fs.h:2810 [inline]
 reiserfs_alloc_inode+0x26/0xb0 fs/reiserfs/super.c:642
 alloc_inode+0x5d/0x220 fs/inode.c:260
 iget5_locked fs/inode.c:1285 [inline]
 iget5_locked+0x63/0xe0 fs/inode.c:1278
 reiserfs_fill_super+0x10e7/0x3150 fs/reiserfs/super.c:2053
 mount_bdev+0x1f3/0x350 fs/super.c:1398
 legacy_get_tree+0x109/0x220 fs/fs_context.c:611
 vfs_get_tree+0x88/0x350 fs/super.c:1521
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3662
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1160 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2383
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2478
 __unfreeze_partials+0x21d/0x240 mm/slub.c:2655
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x18b/0x1d0 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 __kmem_cache_alloc_node+0x19b/0x350 mm/slub.c:3517
 __do_kmalloc_node mm/slab_common.c:1023 [inline]
 __kmalloc+0x4f/0x100 mm/slab_common.c:1037
 kmalloc include/linux/slab.h:603 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 tomoyo_encode2+0x100/0x3d0 security/tomoyo/realpath.c:45
 tomoyo_encode+0x29/0x50 security/tomoyo/realpath.c:80
 tomoyo_realpath_from_path+0x196/0x710 security/tomoyo/realpath.c:283
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x2aa/0x3b0 security/tomoyo/file.c:771
 tomoyo_file_open security/tomoyo/tomoyo.c:332 [inline]
 tomoyo_file_open+0xa8/0xd0 security/tomoyo/tomoyo.c:327
 security_file_open+0x6a/0xe0 security/security.c:2822
 do_dentry_open+0x538/0x1780 fs/open.c:912
 do_open fs/namei.c:3636 [inline]
 path_openat+0x19af/0x29c0 fs/namei.c:3793

Memory state around the buggy address:
 ffff88808ebd8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88808ebd8b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88808ebd8c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff88808ebd8c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88808ebd8d00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
==================================================================