=====================================================
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline]
BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:30 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:302 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:330 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0xef3/0x33f0 lib/iov_iter.c:185
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 copy_to_user_iter lib/iov_iter.c:24 [inline]
 iterate_ubuf include/linux/iov_iter.h:30 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:302 [inline]
 iterate_and_advance include/linux/iov_iter.h:330 [inline]
 _copy_to_iter+0xef3/0x33f0 lib/iov_iter.c:185
 copy_page_to_iter+0x482/0x910 lib/iov_iter.c:362
 copy_folio_to_iter include/linux/uio.h:204 [inline]
 filemap_read+0xcfd/0x2300 mm/filemap.c:2799
 blkdev_read_iter+0x89f/0xb00 block/fops.c:859
 new_sync_read fs/read_write.c:491 [inline]
 vfs_read+0x8ed/0xf90 fs/read_write.c:572
 ksys_read fs/read_write.c:715 [inline]
 __do_sys_read fs/read_write.c:724 [inline]
 __se_sys_read fs/read_write.c:722 [inline]
 __x64_sys_read+0x1fb/0x4d0 fs/read_write.c:722
 x64_sys_call+0x2f9c/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 ntfs_write_bh+0x6ae/0xe90 fs/ntfs3/fsntfs.c:1430
 mi_write+0xb4/0x2f0 fs/ntfs3/record.c:402
 ni_write_inode+0xd95/0x1ca0 fs/ntfs3/frecord.c:3325
 ntfs_sync_inode+0x3a/0x50 fs/ntfs3/inode.c:1047
 ntfs_truncate fs/ntfs3/file.c:498 [inline]
 ntfs_setattr+0x1123/0x1640 fs/ntfs3/file.c:806
 notify_change+0x1ada/0x1bf0 fs/attr.c:546
 do_truncate+0x28f/0x310 fs/open.c:68
 handle_truncate fs/namei.c:3596 [inline]
 do_open fs/namei.c:3979 [inline]
 path_openat+0x5d85/0x6760 fs/namei.c:4134
 do_filp_open+0x280/0x660 fs/namei.c:4161
 do_sys_openat2+0x1bb/0x2f0 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_sys_creat fs/open.c:1530 [inline]
 __se_sys_creat fs/open.c:1524 [inline]
 __x64_sys_creat+0xe1/0x150 fs/open.c:1524
 x64_sys_call+0x3a14/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:86
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 al_update+0x3a9/0x570 fs/ntfs3/attrlist.c:404
 ni_write_inode+0x1adc/0x1ca0 fs/ntfs3/frecord.c:3293
 ntfs_sync_inode+0x3a/0x50 fs/ntfs3/inode.c:1047
 ntfs_truncate fs/ntfs3/file.c:498 [inline]
 ntfs_setattr+0x1123/0x1640 fs/ntfs3/file.c:806
 notify_change+0x1ada/0x1bf0 fs/attr.c:546
 do_truncate+0x28f/0x310 fs/open.c:68
 handle_truncate fs/namei.c:3596 [inline]
 do_open fs/namei.c:3979 [inline]
 path_openat+0x5d85/0x6760 fs/namei.c:4134
 do_filp_open+0x280/0x660 fs/namei.c:4161
 do_sys_openat2+0x1bb/0x2f0 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_sys_creat fs/open.c:1530 [inline]
 __se_sys_creat fs/open.c:1524 [inline]
 __x64_sys_creat+0xe1/0x150 fs/open.c:1524
 x64_sys_call+0x3a14/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:86
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4985 [inline]
 slab_alloc_node mm/slub.c:5288 [inline]
 __do_kmalloc_node mm/slub.c:5649 [inline]
 __kmalloc_noprof+0xabb/0x1b40 mm/slub.c:5662
 kmalloc_noprof include/linux/slab.h:961 [inline]
 ni_create_attr_list+0x1ca/0x1db0 fs/ntfs3/frecord.c:770
 ni_ins_attr_ext+0x676/0x1480 fs/ntfs3/frecord.c:924
 ni_insert_attr fs/ntfs3/frecord.c:1091 [inline]
 ni_insert_resident fs/ntfs3/frecord.c:1475 [inline]
 ni_add_name+0xb09/0x11e0 fs/ntfs3/frecord.c:2987
 ntfs_link_inode+0x221/0x350 fs/ntfs3/inode.c:1734
 ntfs_link+0x20e/0x500 fs/ntfs3/namei.c:146
 vfs_link+0x8eb/0xb30 fs/namei.c:4941
 do_linkat+0x4af/0x1040 fs/namei.c:5011
 __do_sys_link fs/namei.c:5045 [inline]
 __se_sys_link fs/namei.c:5043 [inline]
 __x64_sys_link+0xd7/0x140 fs/namei.c:5043
 x64_sys_call+0x162f/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:87
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Bytes 202-207 of 512 are uninitialized
Memory access of size 512 starts at ffff88804f0b3000
Data copied to user address 00007f92b2c2a000

CPU: 0 UID: 0 PID: 6200 Comm: udevd Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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