==================================================================
BUG: KASAN: slab-use-after-free in __ext4_iget+0x26c/0x3390 fs/ext4/inode.c:4716
Read of size 8 at addr ffff0000dbfeceb0 by task syz-executor.2/21446

CPU: 1 PID: 21446 Comm: syz-executor.2 Not tainted 6.7.0-rc5-syzkaller-g0bcda4cd6851 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:475
 kasan_report+0xd8/0x138 mm/kasan/report.c:588
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 __ext4_iget+0x26c/0x3390 fs/ext4/inode.c:4716
 __ext4_fill_super fs/ext4/super.c:5482 [inline]
 ext4_fill_super+0x44a8/0x5818 fs/ext4/super.c:5712
 get_tree_bdev+0x33c/0x4a8 fs/super.c:1598
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5744
 vfs_get_tree+0x90/0x288 fs/super.c:1771
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3337
 path_mount+0x590/0xe04 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3863
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Allocated by task 10000:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x7c mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511
 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x90/0x498 mm/slab.h:763
 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+0x194/0x394 mm/slub.c:3509
 alloc_inode_sb include/linux/fs.h:2937 [inline]
 reiserfs_alloc_inode+0x2c/0xc4 fs/reiserfs/super.c:642
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x68/0x1d0 fs/inode.c:1006
 new_inode+0x30/0x16c fs/inode.c:1032
 reiserfs_mkdir+0x18c/0x77c fs/reiserfs/namei.c:813
 xattr_mkdir fs/reiserfs/xattr.c:77 [inline]
 create_privroot fs/reiserfs/xattr.c:891 [inline]
 reiserfs_xattr_init+0x2b4/0x638 fs/reiserfs/xattr.c:1007
 reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
 mount_bdev+0x1e8/0x2b4 fs/super.c:1650
 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662
 vfs_get_tree+0x90/0x288 fs/super.c:1771
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3337
 path_mount+0x590/0xe04 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3863
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Last potentially related work creation:
 kasan_save_stack+0x40/0x6c mm/kasan/common.c:45
 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:492
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:502
 __call_rcu_common kernel/rcu/tree.c:2681 [inline]
 call_rcu+0x104/0xaf4 kernel/rcu/tree.c:2795
 destroy_inode fs/inode.c:316 [inline]
 evict+0x5fc/0x68c fs/inode.c:681
 iput_final fs/inode.c:1777 [inline]
 iput+0x734/0x818 fs/inode.c:1803
 reiserfs_mkdir+0x2ec/0x77c
 xattr_mkdir fs/reiserfs/xattr.c:77 [inline]
 create_privroot fs/reiserfs/xattr.c:891 [inline]
 reiserfs_xattr_init+0x2b4/0x638 fs/reiserfs/xattr.c:1007
 reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175
 mount_bdev+0x1e8/0x2b4 fs/super.c:1650
 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662
 vfs_get_tree+0x90/0x288 fs/super.c:1771
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3337
 path_mount+0x590/0xe04 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3863
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

The buggy address belongs to the object at ffff0000dbfec8e0
 which belongs to the cache reiser_inode_cache of size 1568
The buggy address is located 1488 bytes inside of
 freed 1568-byte region [ffff0000dbfec8e0, ffff0000dbfecf00)

The buggy address belongs to the physical page:
page:00000000474c8813 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000dbfed620 pfn:0x11bfe8
head:00000000474c8813 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000cfd05401
flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000840 ffff0000c46c9dc0 dead000000000122 0000000000000000
raw: ffff0000dbfed620 0000000080130009 00000001ffffffff ffff0000cfd05401
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000dbfecd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000dbfece00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000dbfece80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff0000dbfecf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000dbfecf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs error (device loop2): __ext4_fill_super:5482: inode #2: comm syz-executor.2: unexpected EA_INODE flag
EXT4-fs (loop2): get root inode failed
EXT4-fs (loop2): mount failed