syzbot

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BUG: KMSAN: uninit-value in memcmp lib/string.c:676 [inline]
BUG: KMSAN: uninit-value in bcmp+0xc3/0x1c0 lib/string.c:708
 memcmp lib/string.c:676 [inline]
 bcmp+0xc3/0x1c0 lib/string.c:708
 ni_update_parent+0xeda/0x14b0 fs/ntfs3/frecord.c:3199
 ni_write_inode+0x1d01/0x1df0 fs/ntfs3/frecord.c:3315
 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1016
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1745
 writeback_sb_inodes+0xa34/0x1c20 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2047
 wb_writeback+0x50b/0xcb0 fs/fs-writeback.c:2158
 wb_check_background_flush fs/fs-writeback.c:2228 [inline]
 wb_do_writeback fs/fs-writeback.c:2316 [inline]
 wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2343
 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:3043
 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:4793
 do_linkat+0x4f5/0xff0 fs/namei.c:4863
 __do_sys_link fs/namei.c:4897 [inline]
 __se_sys_link fs/namei.c:4895 [inline]
 __x64_sys_link+0xe8/0x140 fs/namei.c:4895
 x64_sys_call+0x3afa/0x3c30 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

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4125 [inline]
 slab_alloc_node mm/slub.c:4168 [inline]
 kmem_cache_alloc_noprof+0x915/0xe10 mm/slub.c:4175
 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:4793
 do_linkat+0x4f5/0xff0 fs/namei.c:4863
 __do_sys_link fs/namei.c:4897 [inline]
 __se_sys_link fs/namei.c:4895 [inline]
 __x64_sys_link+0xe8/0x140 fs/namei.c:4895
 x64_sys_call+0x3afa/0x3c30 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

CPU: 0 UID: 0 PID: 4842 Comm: kworker/u8:27 Not tainted 6.13.0-rc5-syzkaller-00161-g63676eefb7a0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: writeback wb_workfn (flush-7:0)
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