=====================================================
BUG: KMSAN: uninit-value in get_match_len fs/ntfs3/lznt.c:43 [inline]
BUG: KMSAN: uninit-value in longest_match_std+0x589/0xee0 fs/ntfs3/lznt.c:64
 get_match_len fs/ntfs3/lznt.c:43 [inline]
 longest_match_std+0x589/0xee0 fs/ntfs3/lznt.c:64
 compress_chunk fs/ntfs3/lznt.c:170 [inline]
 compress_lznt+0x4a0/0xe90 fs/ntfs3/lznt.c:339
 ni_write_frame+0xad0/0x1510 fs/ntfs3/frecord.c:2729
 ntfs_compress_write+0x2765/0x3940 fs/ntfs3/file.c:1200
 ntfs_file_write_iter+0xf39/0x10d0 fs/ntfs3/file.c:1317
 __kernel_write_iter+0x6f9/0xdd0 fs/read_write.c:619
 __kernel_write+0xc8/0x100 fs/read_write.c:639
 acct_write_process+0x674/0xc50 kernel/acct.c:536
 close_work+0x48/0x130 kernel/acct.c:208
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xae7/0x1d60 kernel/workqueue.c:3340
 worker_thread+0x1741/0x1de0 kernel/workqueue.c:3421
 kthread+0xd5a/0xf00 kernel/kthread.c:463
 ret_from_fork+0x207/0x6f0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246

Uninit was created at:
 __alloc_frozen_pages_noprof+0x6df/0xf50 mm/page_alloc.c:5263
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2486
 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline]
 alloc_pages_noprof mm/mempolicy.c:2577 [inline]
 folio_alloc_noprof+0x108/0x360 mm/mempolicy.c:2587
 filemap_alloc_folio_noprof+0xd9/0x480 mm/filemap.c:1013
 __filemap_get_folio_mpol+0xb43/0x1960 mm/filemap.c:2006
 __filemap_get_folio include/linux/pagemap.h:774 [inline]
 ntfs_get_frame_pages+0xdf/0x5f0 fs/ntfs3/file.c:996
 ntfs_compress_write+0x1cf2/0x3940 fs/ntfs3/file.c:1149
 ntfs_file_write_iter+0xf39/0x10d0 fs/ntfs3/file.c:1317
 __kernel_write_iter+0x6f9/0xdd0 fs/read_write.c:619
 __kernel_write+0xc8/0x100 fs/read_write.c:639
 acct_write_process+0x674/0xc50 kernel/acct.c:536
 do_acct_process kernel/acct.c:550 [inline]
 slow_acct_process+0x40a/0x600 kernel/acct.c:604
 acct_process+0x106/0x140 kernel/acct.c:628
 do_exit+0x8f0/0x3cc0 kernel/exit.c:962
 do_group_exit+0x258/0x390 kernel/exit.c:1112
 get_signal+0x237d/0x29d0 kernel/signal.c:3034
 arch_do_signal_or_restart+0x53/0xc00 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x118/0x1b10 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x1d7/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 5843 Comm: kworker/1:5 Tainted: G             L      syzkaller #0 PREEMPT(voluntary) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: events close_work
=====================================================