syzbot

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BUG: KMSAN: uninit-value in memcmp lib/string.c:665 [inline]
BUG: KMSAN: uninit-value in bcmp+0xc3/0x1c0 lib/string.c:697
 memcmp lib/string.c:665 [inline]
 bcmp+0xc3/0x1c0 lib/string.c:697
 ni_update_parent+0xeda/0x14b0 fs/ntfs3/frecord.c:3273
 ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3389
 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1016
 write_inode fs/fs-writeback.c:1503 [inline]
 __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1723
 writeback_sb_inodes+0xa34/0x1c20 fs/fs-writeback.c:1954
 __writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2025
 wb_writeback+0x50b/0xcb0 fs/fs-writeback.c:2136
 wb_check_background_flush fs/fs-writeback.c:2206 [inline]
 wb_do_writeback fs/fs-writeback.c:2294 [inline]
 wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2321
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391
 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:
 ni_add_name+0xe1b/0x10d0 fs/ntfs3/frecord.c:3117
 ntfs_link_inode+0x265/0x310 fs/ntfs3/inode.c:1735
 ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:146
 vfs_link+0x94c/0xb70 fs/namei.c:4739
 do_linkat+0x4f5/0xfd0 fs/namei.c:4809
 __do_sys_linkat fs/namei.c:4837 [inline]
 __se_sys_linkat fs/namei.c:4834 [inline]
 __x64_sys_linkat+0x186/0x230 fs/namei.c:4834
 x64_sys_call+0x37e1/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:266
 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 created at:
 slab_post_alloc_hook mm/slub.c:4091 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 kmem_cache_alloc_noprof+0x637/0xb20 mm/slub.c:4141
 ntfs_link_inode+0x8f/0x310 fs/ntfs3/inode.c:1723
 ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:146
 vfs_link+0x94c/0xb70 fs/namei.c:4739
 do_linkat+0x4f5/0xfd0 fs/namei.c:4809
 __do_sys_linkat fs/namei.c:4837 [inline]
 __se_sys_linkat fs/namei.c:4834 [inline]
 __x64_sys_linkat+0x186/0x230 fs/namei.c:4834
 x64_sys_call+0x37e1/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:266
 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

CPU: 0 UID: 0 PID: 3858 Comm: kworker/u8:17 Not tainted 6.12.0-rc6-syzkaller-00272-gda4373fbcf00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: writeback wb_workfn (flush-7:0)
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