From: syzbot <syzbot+488af4b73b8ab6ed0f27@syzkaller.appspotmail.com>
To: almaz.alexandrovich@paragon-software.com,
linux-kernel@vger.kernel.org, ntfs3@lists.linux.dev,
syzkaller-bugs@googlegroups.com
Subject: [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (2)
Date: Fri, 02 May 2025 03:43:30 -0700 [thread overview]
Message-ID: <6814a1d2.050a0220.53db9.0009.GAE@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 02ddfb981de8 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13be6374580000
kernel config: https://syzkaller.appspot.com/x/.config?x=9dc42c34a3f5c357
dashboard link: https://syzkaller.appspot.com/bug?extid=488af4b73b8ab6ed0f27
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5ca57f5a3f77/disk-02ddfb98.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3f23cbc11e68/vmlinux-02ddfb98.xz
kernel image: https://storage.googleapis.com/syzbot-assets/73e63afac354/bzImage-02ddfb98.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+488af4b73b8ab6ed0f27@syzkaller.appspotmail.com
=====================================================
BUG: KMSAN: uninit-value in ntfs_dir_emit fs/ntfs3/dir.c:333 [inline]
BUG: KMSAN: uninit-value in ntfs_read_hdr+0x105a/0x1370 fs/ntfs3/dir.c:383
ntfs_dir_emit fs/ntfs3/dir.c:333 [inline]
ntfs_read_hdr+0x105a/0x1370 fs/ntfs3/dir.c:383
ntfs_readdir+0xf21/0x1a30 fs/ntfs3/dir.c:494
iterate_dir+0x716/0x920 fs/readdir.c:108
__do_sys_getdents64 fs/readdir.c:403 [inline]
__se_sys_getdents64+0x17e/0x550 fs/readdir.c:389
__x64_sys_getdents64+0x97/0xe0 fs/readdir.c:389
x64_sys_call+0x16c4/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:218
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 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:1228
ntfs_read_bh+0x6a/0xc00 fs/ntfs3/fsntfs.c:1289
indx_read+0x450/0x1840 fs/ntfs3/index.c:1067
ntfs_readdir+0xddf/0x1a30 fs/ntfs3/dir.c:489
iterate_dir+0x716/0x920 fs/readdir.c:108
__do_sys_getdents64 fs/readdir.c:403 [inline]
__se_sys_getdents64+0x17e/0x550 fs/readdir.c:389
__x64_sys_getdents64+0x97/0xe0 fs/readdir.c:389
x64_sys_call+0x16c4/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:218
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 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:1426
indx_write fs/ntfs3/index.c:1027 [inline]
indx_insert_into_buffer+0x287/0x2010 fs/ntfs3/index.c:1809
indx_insert_entry+0xcde/0x1050 fs/ntfs3/index.c:1986
ntfs_create_inode+0x47b0/0x5560 fs/ntfs3/inode.c:1616
ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207
vfs_mkdir+0x4e7/0x850 fs/namei.c:4359
do_mkdirat+0x41a/0xf30 fs/namei.c:4392
__do_sys_mkdir fs/namei.c:4414 [inline]
__se_sys_mkdir fs/namei.c:4412 [inline]
__x64_sys_mkdir+0x9a/0xf0 fs/namei.c:4412
x64_sys_call+0x29b6/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:84
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was stored to memory at:
hdr_insert_de+0x471/0x550 fs/ntfs3/index.c:835
indx_insert_into_buffer+0x1b6/0x2010 fs/ntfs3/index.c:1805
indx_insert_entry+0xcde/0x1050 fs/ntfs3/index.c:1986
ntfs_create_inode+0x47b0/0x5560 fs/ntfs3/inode.c:1616
ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207
vfs_mkdir+0x4e7/0x850 fs/namei.c:4359
do_mkdirat+0x41a/0xf30 fs/namei.c:4392
__do_sys_mkdir fs/namei.c:4414 [inline]
__se_sys_mkdir fs/namei.c:4412 [inline]
__x64_sys_mkdir+0x9a/0xf0 fs/namei.c:4412
x64_sys_call+0x29b6/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:84
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 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:1228
ntfs_read_bh+0x6a/0xc00 fs/ntfs3/fsntfs.c:1289
indx_read+0x450/0x1840 fs/ntfs3/index.c:1067
indx_find+0xa80/0x1510 fs/ntfs3/index.c:1179
indx_insert_entry+0xd74/0x1050 fs/ntfs3/index.c:1963
ntfs_create_inode+0x47b0/0x5560 fs/ntfs3/inode.c:1616
ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207
vfs_mkdir+0x4e7/0x850 fs/namei.c:4359
do_mkdirat+0x41a/0xf30 fs/namei.c:4392
__do_sys_mkdir fs/namei.c:4414 [inline]
__se_sys_mkdir fs/namei.c:4412 [inline]
__x64_sys_mkdir+0x9a/0xf0 fs/namei.c:4412
x64_sys_call+0x29b6/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:84
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 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:1426
indx_write fs/ntfs3/index.c:1027 [inline]
indx_insert_into_buffer+0x287/0x2010 fs/ntfs3/index.c:1809
indx_insert_entry+0xcde/0x1050 fs/ntfs3/index.c:1986
ni_add_name+0xef7/0x11e0 fs/ntfs3/frecord.c:2995
ntfs_link_inode+0x221/0x350 fs/ntfs3/inode.c:1698
ntfs_link+0x20e/0x500 fs/ntfs3/namei.c:146
vfs_link+0x8e8/0xb30 fs/namei.c:4847
do_linkat+0x4af/0x1040 fs/namei.c:4917
__do_sys_link fs/namei.c:4951 [inline]
__se_sys_link fs/namei.c:4949 [inline]
__x64_sys_link+0xd7/0x140 fs/namei.c:4949
x64_sys_call+0x3567/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 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:1805
indx_insert_entry+0xcde/0x1050 fs/ntfs3/index.c:1986
ni_add_name+0xef7/0x11e0 fs/ntfs3/frecord.c:2995
ntfs_link_inode+0x221/0x350 fs/ntfs3/inode.c:1698
ntfs_link+0x20e/0x500 fs/ntfs3/namei.c:146
vfs_link+0x8e8/0xb30 fs/namei.c:4847
do_linkat+0x4af/0x1040 fs/namei.c:4917
__do_sys_link fs/namei.c:4951 [inline]
__se_sys_link fs/namei.c:4949 [inline]
__x64_sys_link+0xd7/0x140 fs/namei.c:4949
x64_sys_call+0x3567/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 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:4167 [inline]
slab_alloc_node mm/slub.c:4210 [inline]
kmem_cache_alloc_noprof+0x81b/0xec0 mm/slub.c:4217
ntfs_link_inode+0x90/0x350 fs/ntfs3/inode.c:1686
ntfs_link+0x20e/0x500 fs/ntfs3/namei.c:146
vfs_link+0x8e8/0xb30 fs/namei.c:4847
do_linkat+0x4af/0x1040 fs/namei.c:4917
__do_sys_link fs/namei.c:4951 [inline]
__se_sys_link fs/namei.c:4949 [inline]
__x64_sys_link+0xd7/0x140 fs/namei.c:4949
x64_sys_call+0x3567/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 0 UID: 0 PID: 5804 Comm: syz-executor Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
=====================================================
---
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reply other threads:[~2025-05-02 10:43 UTC|newest]
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