REISERFS (device loop1): Using tea hash to sort names
==================================================================
BUG: KASAN: out-of-bounds in leaf_paste_entries+0x694/0xb38 fs/reiserfs/lbalance.c:1377
Read of size 18446744073709551584 at addr ffff0000fc2d5fa4 by task syz.1.150/5217

CPU: 1 PID: 5217 Comm: syz.1.150 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 print_address_description+0x88/0x218 mm/kasan/report.c:316
 print_report+0x50/0x68 mm/kasan/report.c:420
 kasan_report+0xa8/0xfc mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x258/0x290 mm/kasan/generic.c:189
 memmove+0x48/0x90 mm/kasan/shadow.c:54
 leaf_paste_entries+0x694/0xb38 fs/reiserfs/lbalance.c:1377
 balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline]
 balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline]
 balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline]
 balance_leaf+0x9658/0xdee0 fs/reiserfs/do_balan.c:1452
 do_balance+0x270/0x794 fs/reiserfs/do_balan.c:1888
 reiserfs_paste_into_item+0x640/0x6e8 fs/reiserfs/stree.c:2159
 reiserfs_add_entry+0x87c/0xc44 fs/reiserfs/namei.c:567
 reiserfs_mkdir+0x5bc/0x7d4 fs/reiserfs/namei.c:862
 xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
 create_privroot fs/reiserfs/xattr.c:882 [inline]
 reiserfs_xattr_init+0x2b4/0x6a8 fs/reiserfs/xattr.c:1005
 reiserfs_fill_super+0x198c/0x1dbc fs/reiserfs/super.c:2175
 mount_bdev+0x264/0x35c fs/super.c:1443
 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
 legacy_get_tree+0xd8/0x174 fs/fs_context.c:632
 vfs_get_tree+0x90/0x278 fs/super.c:1573
 do_new_mount+0x228/0x804 fs/namespace.c:3078
 path_mount+0x5ac/0xe6c fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x4a0/0x5a0 fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

The buggy address belongs to the physical page:
page:000000003bd4ed3c refcount:3 mapcount:0 mapping:000000006873ae0d index:0x213 pfn:0x13c2d5
memcg:ffff0000cbd90000
aops:def_blk_aops ino:700001
flags: 0x5ffc60000002042(referenced|workingset|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc60000002042 0000000000000000 dead000000000122 ffff0000c049d518
raw: 0000000000000213 ffff0000e152be80 00000003ffffffff ffff0000cbd90000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000fc2d5e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000fc2d5f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000fc2d5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                               ^
 ffff0000fc2d6000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000fc2d6080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
REISERFS warning: reiserfs-5094 has_valid_deh_location: directory entry location seems wrong *3.5*[1768256046 1718773107 0x72705f73 UNKNOWN], item_len 29662, item_location 2, free_space(entry_count) 37376
REISERFS error (device loop1): vs-5150 search_by_key: invalid format found in block 531. Fsck?
REISERFS (device loop1): Remounting filesystem read-only
REISERFS error (device loop1): vs-13050 reiserfs_update_sd_size: i/o failure occurred trying to update [1 2 0x0 SD] stat data
REISERFS warning (device loop1): jdm-20006 create_privroot: xattrs/ACLs enabled and couldn't find/create .reiserfs_priv. Failing mount.
REISERFS warning: reiserfs-5094 has_valid_deh_location: directory entry location seems wrong *3.5*[1768256046 1718773107 0x72705f73 UNKNOWN], item_len 29662, item_location 2, free_space(entry_count) 37376
REISERFS error (device loop1): vs-5150 search_by_key: invalid format found in block 531. Fsck?
REISERFS error (device loop1): zam-7001 reiserfs_find_entry: io error
loop1: detected capacity change from 0 to 32768
netlink: 8 bytes leftover after parsing attributes in process `syz.1.150'.
loop1: detected capacity change from 0 to 32768
XFS (loop1): Mounting V5 Filesystem
XFS (loop1): Ending clean mount
XFS (loop1): Unmounting Filesystem