loop2: detected capacity change from 0 to 512
==================================================================
BUG: KASAN: slab-use-after-free in __ext4_iget+0x26c/0x3338 fs/ext4/inode.c:4708
Read of size 8 at addr ffff00012bd985d0 by task syz-executor.2/13061

CPU: 1 PID: 13061 Comm: syz-executor.2 Not tainted 6.6.0-rc3-syzkaller-gbf6547d8715b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __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/0x3338 fs/ext4/inode.c:4708
 __ext4_fill_super fs/ext4/super.c:5473 [inline]
 ext4_fill_super+0x4380/0x56ec fs/ext4/super.c:5703
 get_tree_bdev+0x33c/0x4a8 fs/super.c:1577
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5735
 vfs_get_tree+0x90/0x288 fs/super.c:1750
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335
 path_mount+0x590/0xe04 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]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861
 __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+0x58/0x16c 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:591

Allocated by task 9687:
 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+0x90/0x4a0 mm/slab.h:762
 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:2868 [inline]
 reiserfs_alloc_inode+0x2c/0xc4 fs/reiserfs/super.c:642
 alloc_inode fs/inode.c:259 [inline]
 new_inode_pseudo+0x68/0x1d0 fs/inode.c:1004
 new_inode+0x30/0x16c fs/inode.c:1030
 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:1629
 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:638
 vfs_get_tree+0x90/0x288 fs/super.c:1750
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335
 path_mount+0x590/0xe04 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]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861
 __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+0x58/0x16c 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:591

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:2653 [inline]
 call_rcu+0x104/0xaf4 kernel/rcu/tree.c:2767
 destroy_inode fs/inode.c:314 [inline]
 evict+0x5fc/0x68c fs/inode.c:679
 iput_final fs/inode.c:1775 [inline]
 iput+0x734/0x818 fs/inode.c:1801
 reiserfs_new_inode+0xc28/0x16f8 fs/reiserfs/inode.c:2152
 reiserfs_mkdir+0x4ac/0x77c fs/reiserfs/namei.c:843
 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:1629
 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:638
 vfs_get_tree+0x90/0x288 fs/super.c:1750
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335
 path_mount+0x590/0xe04 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]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861
 __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+0x58/0x16c 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:591

Second to 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:2653 [inline]
 call_rcu+0x104/0xaf4 kernel/rcu/tree.c:2767
 destroy_inode fs/inode.c:314 [inline]
 evict+0x5fc/0x68c fs/inode.c:679
 dispose_list fs/inode.c:697 [inline]
 evict_inodes+0x6b4/0x74c fs/inode.c:747
 generic_shutdown_super+0x9c/0x2b8 fs/super.c:672
 kill_block_super+0x40/0x74 fs/super.c:1646
 reiserfs_kill_sb+0x134/0x14c fs/reiserfs/super.c:570
 deactivate_locked_super+0xac/0x12c fs/super.c:481
 deactivate_super+0xe0/0x100 fs/super.c:514
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2184/0x3c94 arch/arm64/kernel/signal.c:1305
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

The buggy address belongs to the object at ffff00012bd98000
 which belongs to the cache reiser_inode_cache of size 1568
The buggy address is located 1488 bytes inside of
 freed 1568-byte region [ffff00012bd98000, ffff00012bd98620)

The buggy address belongs to the physical page:
page:0000000033f8ef6c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16bd98
head:0000000033f8ef6c order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000d44aff01
flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000840 ffff0000c4546000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080130013 00000001ffffffff ffff0000d44aff01
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff00012bd98480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff00012bd98500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff00012bd98580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff00012bd98600: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
 ffff00012bd98680: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs (loop2): corrupt root inode, run e2fsck
EXT4-fs (loop2): mount failed