===================================================== BUG: KMSAN: uninit-value in ntfs_dir_emit fs/ntfs3/dir.c:335 [inline] BUG: KMSAN: uninit-value in ntfs_read_hdr+0xfcc/0x13e0 fs/ntfs3/dir.c:384 ntfs_dir_emit fs/ntfs3/dir.c:335 [inline] ntfs_read_hdr+0xfcc/0x13e0 fs/ntfs3/dir.c:384 ntfs_readdir+0xf21/0x1a30 fs/ntfs3/dir.c:495 iterate_dir+0x452/0x620 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:410 [inline] __se_sys_getdents64+0x17e/0x550 fs/readdir.c:396 __x64_sys_getdents64+0x97/0xe0 fs/readdir.c:396 x64_sys_call+0x3cef/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:218 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: ntfs_read_run_nb+0x7cf/0x1810 fs/ntfs3/fsntfs.c:1232 ntfs_read_bh+0x6a/0xc00 fs/ntfs3/fsntfs.c:1293 indx_read+0x450/0x1840 fs/ntfs3/index.c:1067 indx_find+0xa80/0x1510 fs/ntfs3/index.c:1179 indx_update_dup+0xb67/0x10f0 fs/ntfs3/index.c:2683 ni_update_parent+0x144c/0x1810 fs/ntfs3/frecord.c:3119 ni_write_inode+0x1be0/0x1cb0 fs/ntfs3/frecord.c:3214 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1043 write_inode fs/fs-writeback.c:1582 [inline] __writeback_single_inode+0x892/0x1190 fs/fs-writeback.c:1802 writeback_single_inode+0x315/0x960 fs/fs-writeback.c:1858 sync_inode_metadata+0xa4/0xe0 fs/fs-writeback.c:2944 __generic_file_fsync+0x2ae/0x430 fs/libfs.c:1569 generic_file_fsync+0x7b/0x190 fs/libfs.c:1599 ntfs_file_fsync+0xe9/0x160 fs/ntfs3/file.c:1452 vfs_fsync_range+0x1a1/0x240 fs/sync.c:188 generic_write_sync include/linux/fs.h:2616 [inline] ntfs_file_write_iter+0xded/0x10d0 fs/ntfs3/file.c:1324 __kernel_write_iter+0x6fa/0xdd0 fs/read_write.c:619 __kernel_write+0xc8/0x100 fs/read_write.c:639 __dump_emit fs/coredump.c:1220 [inline] dump_emit+0x3a0/0x5d0 fs/coredump.c:1258 elf_core_dump+0x58f6/0x6cb0 fs/binfmt_elf.c:2090 coredump_write+0x20b6/0x2d60 fs/coredump.c:1049 do_coredump fs/coredump.c:1126 [inline] vfs_coredump+0x79b7/0x8cf0 fs/coredump.c:1200 get_signal+0x20a9/0x2a20 kernel/signal.c:3019 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 kernel/entry/common.c:75 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline] irqentry_exit+0xf2/0x720 kernel/entry/common.c:196 exc_general_protection+0x164/0x1c0 arch/x86/kernel/traps.c:913 asm_exc_general_protection+0x2b/0x30 arch/x86/include/asm/idtentry.h:612 Uninit was stored to memory at: ntfs_write_bh+0x6ae/0xe90 fs/ntfs3/fsntfs.c:1437 indx_write fs/ntfs3/index.c:1027 [inline] indx_update_dup+0xe3d/0x10f0 fs/ntfs3/index.c:2711 ni_update_parent+0x144c/0x1810 fs/ntfs3/frecord.c:3119 ni_write_inode+0x1be0/0x1cb0 fs/ntfs3/frecord.c:3214 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1043 write_inode fs/fs-writeback.c:1582 [inline] __writeback_single_inode+0x892/0x1190 fs/fs-writeback.c:1802 writeback_single_inode+0x315/0x960 fs/fs-writeback.c:1858 write_inode_now+0x1c8/0x230 fs/fs-writeback.c:2924 ntfs_extend+0xd73/0xf50 fs/ntfs3/file.c:493 ntfs_file_write_iter+0x627/0x10d0 fs/ntfs3/file.c:1313 __kernel_write_iter+0x6fa/0xdd0 fs/read_write.c:619 __kernel_write+0xc8/0x100 fs/read_write.c:639 __dump_emit fs/coredump.c:1220 [inline] dump_emit+0x3a0/0x5d0 fs/coredump.c:1258 elf_core_dump+0x58f6/0x6cb0 fs/binfmt_elf.c:2090 coredump_write+0x20b6/0x2d60 fs/coredump.c:1049 do_coredump fs/coredump.c:1126 [inline] vfs_coredump+0x79b7/0x8cf0 fs/coredump.c:1200 get_signal+0x20a9/0x2a20 kernel/signal.c:3019 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 kernel/entry/common.c:75 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline] irqentry_exit+0xf2/0x720 kernel/entry/common.c:196 exc_general_protection+0x164/0x1c0 arch/x86/kernel/traps.c:913 asm_exc_general_protection+0x2b/0x30 arch/x86/include/asm/idtentry.h:612 Uninit was stored to memory at: ntfs_read_run_nb+0x7cf/0x1810 fs/ntfs3/fsntfs.c:1232 ntfs_read_bh+0x6a/0xc00 fs/ntfs3/fsntfs.c:1293 indx_read+0x450/0x1840 fs/ntfs3/index.c:1067 indx_find+0xa80/0x1510 fs/ntfs3/index.c:1179 indx_update_dup+0xb67/0x10f0 fs/ntfs3/index.c:2683 ni_update_parent+0x144c/0x1810 fs/ntfs3/frecord.c:3119 ni_write_inode+0x1be0/0x1cb0 fs/ntfs3/frecord.c:3214 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1043 write_inode fs/fs-writeback.c:1582 [inline] __writeback_single_inode+0x892/0x1190 fs/fs-writeback.c:1802 writeback_single_inode+0x315/0x960 fs/fs-writeback.c:1858 write_inode_now+0x1c8/0x230 fs/fs-writeback.c:2924 ntfs_extend+0xd73/0xf50 fs/ntfs3/file.c:493 ntfs_file_write_iter+0x627/0x10d0 fs/ntfs3/file.c:1313 __kernel_write_iter+0x6fa/0xdd0 fs/read_write.c:619 __kernel_write+0xc8/0x100 fs/read_write.c:639 __dump_emit fs/coredump.c:1220 [inline] dump_emit+0x3a0/0x5d0 fs/coredump.c:1258 elf_core_dump+0x58f6/0x6cb0 fs/binfmt_elf.c:2090 coredump_write+0x20b6/0x2d60 fs/coredump.c:1049 do_coredump fs/coredump.c:1126 [inline] vfs_coredump+0x79b7/0x8cf0 fs/coredump.c:1200 get_signal+0x20a9/0x2a20 kernel/signal.c:3019 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 kernel/entry/common.c:75 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline] irqentry_exit+0xf2/0x720 kernel/entry/common.c:196 exc_general_protection+0x164/0x1c0 arch/x86/kernel/traps.c:913 asm_exc_general_protection+0x2b/0x30 arch/x86/include/asm/idtentry.h:612 Uninit was stored to memory at: ntfs_write_bh+0x6ae/0xe90 fs/ntfs3/fsntfs.c:1437 indx_write fs/ntfs3/index.c:1027 [inline] indx_delete_entry+0x27cc/0x8890 fs/ntfs3/index.c:2347 ni_remove_name+0x33d/0xdb0 fs/ntfs3/frecord.c:2805 ni_rename+0x170/0x220 fs/ntfs3/frecord.c:2965 ntfs_rename+0xdd2/0x1290 fs/ntfs3/namei.c:332 vfs_rename+0x2138/0x2640 fs/namei.c:5929 do_renameat2+0xb7f/0x15a0 fs/namei.c:6047 __do_sys_rename fs/namei.c:6090 [inline] __se_sys_rename fs/namei.c:6088 [inline] __x64_sys_rename+0xd7/0x140 fs/namei.c:6088 x64_sys_call+0x2c5/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: ntfs_read_run_nb+0x7cf/0x1810 fs/ntfs3/fsntfs.c:1232 ntfs_read_bh+0x6a/0xc00 fs/ntfs3/fsntfs.c:1293 indx_read+0x450/0x1840 fs/ntfs3/index.c:1067 indx_find+0xa80/0x1510 fs/ntfs3/index.c:1179 indx_delete_entry+0x11bd/0x8890 fs/ntfs3/index.c:2311 ni_remove_name+0x33d/0xdb0 fs/ntfs3/frecord.c:2805 ni_rename+0x170/0x220 fs/ntfs3/frecord.c:2965 ntfs_rename+0xdd2/0x1290 fs/ntfs3/namei.c:332 vfs_rename+0x2138/0x2640 fs/namei.c:5929 do_renameat2+0xb7f/0x15a0 fs/namei.c:6047 __do_sys_rename fs/namei.c:6090 [inline] __se_sys_rename fs/namei.c:6088 [inline] __x64_sys_rename+0xd7/0x140 fs/namei.c:6088 x64_sys_call+0x2c5/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 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:1437 indx_write fs/ntfs3/index.c:1027 [inline] indx_insert_into_buffer+0x287/0x2010 fs/ntfs3/index.c:1819 indx_insert_entry+0xcde/0x1050 fs/ntfs3/index.c:1997 ni_add_name+0xef7/0x11e0 fs/ntfs3/frecord.c:2931 ni_rename+0x97/0x220 fs/ntfs3/frecord.c:2962 ntfs_rename+0xdd2/0x1290 fs/ntfs3/namei.c:332 vfs_rename+0x2138/0x2640 fs/namei.c:5929 do_renameat2+0xb7f/0x15a0 fs/namei.c:6047 __do_sys_rename fs/namei.c:6090 [inline] __se_sys_rename fs/namei.c:6088 [inline] __x64_sys_rename+0xd7/0x140 fs/namei.c:6088 x64_sys_call+0x2c5/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: hdr_insert_de+0x4c8/0x550 fs/ntfs3/index.c:838 indx_insert_into_buffer+0x1b6/0x2010 fs/ntfs3/index.c:1815 indx_insert_entry+0xcde/0x1050 fs/ntfs3/index.c:1997 ni_add_name+0xef7/0x11e0 fs/ntfs3/frecord.c:2931 ni_rename+0x97/0x220 fs/ntfs3/frecord.c:2962 ntfs_rename+0xdd2/0x1290 fs/ntfs3/namei.c:332 vfs_rename+0x2138/0x2640 fs/namei.c:5929 do_renameat2+0xb7f/0x15a0 fs/namei.c:6047 __do_sys_rename fs/namei.c:6090 [inline] __se_sys_rename fs/namei.c:6088 [inline] __x64_sys_rename+0xd7/0x140 fs/namei.c:6088 x64_sys_call+0x2c5/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 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:4960 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x970/0x1750 mm/slub.c:5270 ntfs_rename+0x874/0x1290 fs/ntfs3/namei.c:307 vfs_rename+0x2138/0x2640 fs/namei.c:5929 do_renameat2+0xb7f/0x15a0 fs/namei.c:6047 __do_sys_rename fs/namei.c:6090 [inline] __se_sys_rename fs/namei.c:6088 [inline] __x64_sys_rename+0xd7/0x140 fs/namei.c:6088 x64_sys_call+0x2c5/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 19104 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(none) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 =====================================================