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kernel BUG at fs/reiserfs/item_ops.c:569!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4844 Comm: syz.1.97 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : direntry_check_right+0x230/0x23c fs/reiserfs/item_ops.c:561
lr : direntry_check_right+0x230/0x23c fs/reiserfs/item_ops.c:561
sp : ffff8000230d6d60
x29: ffff8000230d6d60 x28: 0000000000000000 x27: fffffffffffffffe
x26: ffff0000c39ac102 x25: fffffffffffffffe x24: dfff800000000000
x23: 0000000000000028 x22: ffff0000c39ac0fe x21: 0000000000000014
x20: 0000000000000003 x19: ffff0000c39ac0f8 x18: ffff800011a5bd40
x17: ffff800008c83150 x16: ffff8000082d3a08 x15: 0000000000000000
x14: 0000000000000070 x13: 0000000000ff0100 x12: 0000000000ff0100
x11: ff00800008ce692c
 x10: 0000000000000000
 x9 : ffff800008ce692c

x8 : ffff0000d6c61bc0
 x7 : 0000000000000000
 x6 : 000000000000003f

x5 : 0000000000000040
 x4 : ffffffffffffffd0
 x3 : 00000000ffffffe4

x2 : 000000000000017c
 x1 : 0000000000000028
 x0 : 000000000000003c

Call trace:
 direntry_check_right+0x230/0x23c fs/reiserfs/item_ops.c:561
 check_right+0x428/0x690 fs/reiserfs/fix_node.c:355
 dc_check_balance_leaf fs/reiserfs/fix_node.c:1983 [inline]
 dc_check_balance fs/reiserfs/fix_node.c:2039 [inline]
 check_balance fs/reiserfs/fix_node.c:2086 [inline]
 fix_nodes+0x28cc/0x6b4c fs/reiserfs/fix_node.c:2635
 reiserfs_cut_from_item+0x23c/0x1a58 fs/reiserfs/stree.c:1742
 reiserfs_do_truncate+0x738/0x1020 fs/reiserfs/stree.c:1973
 reiserfs_truncate_file+0x5c0/0xaf4 fs/reiserfs/inode.c:2310
 reiserfs_file_release+0x710/0x894 fs/reiserfs/file.c:109
 __fput+0x1bc/0x7c0 fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x1ec/0x270 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2038/0x2b28 arch/arm64/kernel/signal.c:1137
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 52800041 97efc92d 17ffff92 97def1f6 (d4210000) 
---[ end trace 0000000000000000 ]---