Hello, syzbot found the following issue on: HEAD commit: da4373fbcf00 Merge tag 'thermal-6.12-rc7' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16c5e0c0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e4580d62ee1893a5 dashboard link: https://syzkaller.appspot.com/bug?extid=6b97c7810fd3600a03e0 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/204d5ed3c12b/disk-da4373fb.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b51aa0c6ab3a/vmlinux-da4373fb.xz kernel image: https://storage.googleapis.com/syzbot-assets/197213720e0c/bzImage-da4373fb.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6b97c7810fd3600a03e0@xxxxxxxxxxxxxxxxxxxxxxxxx ntfs3(loop4): Different NTFS sector size (2048) and media sector size (512). ===================================================== BUG: KMSAN: uninit-value in ntfs_dir_emit fs/ntfs3/dir.c:333 [inline] BUG: KMSAN: uninit-value in ntfs_read_hdr+0xfba/0x1290 fs/ntfs3/dir.c:383 ntfs_dir_emit fs/ntfs3/dir.c:333 [inline] ntfs_read_hdr+0xfba/0x1290 fs/ntfs3/dir.c:383 ntfs_readdir+0xf48/0x1a10 fs/ntfs3/dir.c:494 iterate_dir+0x5b3/0x9e0 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:407 [inline] __se_sys_getdents64+0x16e/0x550 fs/readdir.c:392 __x64_sys_getdents64+0x96/0xe0 fs/readdir.c:392 x64_sys_call+0x3430/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:218 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_read_run_nb+0x786/0x1070 fs/ntfs3/fsntfs.c:1252 ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1313 indx_read+0x44e/0x17b0 fs/ntfs3/index.c:1067 ntfs_readdir+0xe07/0x1a10 fs/ntfs3/dir.c:489 iterate_dir+0x5b3/0x9e0 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:407 [inline] __se_sys_getdents64+0x16e/0x550 fs/readdir.c:392 __x64_sys_getdents64+0x96/0xe0 fs/readdir.c:392 x64_sys_call+0x3430/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:218 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 indx_write fs/ntfs3/index.c:1027 [inline] indx_insert_into_buffer+0xd8f/0x2010 fs/ntfs3/index.c:1811 indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988 ni_add_name+0xe5d/0x10d0 fs/ntfs3/frecord.c:3120 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 stored to memory at: hdr_insert_de fs/ntfs3/index.c:838 [inline] indx_insert_into_buffer+0xcdf/0x2010 fs/ntfs3/index.c:1807 indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988 ni_add_name+0xe5d/0x10d0 fs/ntfs3/frecord.c:3120 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: 10448 Comm: syz.4.1589 Not tainted 6.12.0-rc6-syzkaller-00272-gda4373fbcf00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
