syzbot

=====================================================
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:29 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x366/0x24a0 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:29 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:245 [inline]
 iterate_and_advance include/linux/iov_iter.h:271 [inline]
 _copy_to_iter+0x366/0x24a0 lib/iov_iter.c:185
 copy_page_to_iter+0x419/0x880 lib/iov_iter.c:362
 copy_folio_to_iter include/linux/uio.h:180 [inline]
 filemap_read+0xc16/0x1500 mm/filemap.c:2676
 blkdev_read_iter+0x6c0/0x8e0 block/fops.c:764
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x8c0/0xf60 fs/read_write.c:476
 ksys_read+0x20f/0x4c0 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0x93/0xe0 fs/read_write.c:627
 x64_sys_call+0x3055/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450
 mi_write+0xda/0x2d0 fs/ntfs3/record.c:388
 ni_write_inode+0xd80/0x1de0 fs/ntfs3/frecord.c:3440
 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
 write_inode fs/fs-writeback.c:1497 [inline]
 __writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
 writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
 wb_writeback+0x4df/0xea0 fs/fs-writeback.c:2127
 wb_do_writeback fs/fs-writeback.c:2274 [inline]
 wb_workfn+0x40b/0x1940 fs/fs-writeback.c:2314
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
 worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was stored to memory at:
 al_update+0x388/0x4d0 fs/ntfs3/attrlist.c:457
 ni_write_inode+0x1aea/0x1de0 fs/ntfs3/frecord.c:3408
 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
 write_inode fs/fs-writeback.c:1497 [inline]
 __writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
 writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
 wb_writeback+0x4df/0xea0 fs/fs-writeback.c:2127
 wb_do_writeback fs/fs-writeback.c:2274 [inline]
 wb_workfn+0x40b/0x1940 fs/fs-writeback.c:2314
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
 worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:3998 [inline]
 slab_alloc_node mm/slub.c:4041 [inline]
 __do_kmalloc_node mm/slub.c:4161 [inline]
 __kmalloc_noprof+0x661/0xf30 mm/slub.c:4174
 kmalloc_noprof include/linux/slab.h:685 [inline]
 ni_create_attr_list+0x1b8/0x19d0 fs/ntfs3/frecord.c:820
 ni_ins_attr_ext+0x4e6/0x10a0 fs/ntfs3/frecord.c:974
 ni_insert_attr fs/ntfs3/frecord.c:1141 [inline]
 ni_insert_resident fs/ntfs3/frecord.c:1525 [inline]
 ni_add_name+0xaf1/0x10d0 fs/ntfs3/frecord.c:3115
 ntfs_link_inode+0x265/0x310 fs/ntfs3/inode.c:1768
 ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:146
 vfs_link+0x93d/0xb70 fs/namei.c:4692
 do_linkat+0x4f5/0xfd0 fs/namei.c:4762
 __do_sys_link fs/namei.c:4796 [inline]
 __se_sys_link fs/namei.c:4794 [inline]
 __x64_sys_link+0xe8/0x140 fs/namei.c:4794
 x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Bytes 202-207 of 1024 are uninitialized
Memory access of size 1024 starts at ffff888013004000
Data copied to user address 00005599e434fab8

CPU: 1 UID: 0 PID: 5201 Comm: udevd Not tainted 6.11.0-rc6-syzkaller-00308-gb31c44928842 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
=====================================================