* [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (3)
@ 2025-09-17 22:55 syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-09-17 22:55 UTC (permalink / raw)
To: almaz.alexandrovich, linux-kernel, ntfs3, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 5aca7966d2a7 Merge tag 'perf-tools-fixes-for-v6.17-2025-09..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12998c7c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1b093ccee5a9e08c
dashboard link: https://syzkaller.appspot.com/bug?extid=332bd4e9d148f11a87dc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14ccc534580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16998c7c580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7dcf9f15bc6a/disk-5aca7966.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8836a30085d9/vmlinux-5aca7966.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b00f10dc0558/bzImage-5aca7966.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/78b7a2febda1/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
=====================================================
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:385
ntfs_dir_emit fs/ntfs3/dir.c:335 [inline]
ntfs_read_hdr+0xfcc/0x13e0 fs/ntfs3/dir.c:385
ntfs_readdir+0xf21/0x1a30 fs/ntfs3/dir.c:496
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+0x3a14/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:218
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 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:1430
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:1728
ntfs_link+0x20e/0x500 fs/ntfs3/namei.c:146
vfs_link+0x8eb/0xb30 fs/namei.c:4854
do_linkat+0x4af/0x1040 fs/namei.c:4924
__do_sys_link fs/namei.c:4958 [inline]
__se_sys_link fs/namei.c:4956 [inline]
__x64_sys_link+0xd7/0x140 fs/namei.c:4956
x64_sys_call+0x162f/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 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:1728
ntfs_link+0x20e/0x500 fs/ntfs3/namei.c:146
vfs_link+0x8eb/0xb30 fs/namei.c:4854
do_linkat+0x4af/0x1040 fs/namei.c:4924
__do_sys_link fs/namei.c:4958 [inline]
__se_sys_link fs/namei.c:4956 [inline]
__x64_sys_link+0xd7/0x140 fs/namei.c:4956
x64_sys_call+0x162f/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 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:4197 [inline]
slab_alloc_node mm/slub.c:4240 [inline]
kmem_cache_alloc_noprof+0x81b/0xec0 mm/slub.c:4247
ntfs_link_inode+0x90/0x350 fs/ntfs3/inode.c:1716
ntfs_link+0x20e/0x500 fs/ntfs3/namei.c:146
vfs_link+0x8eb/0xb30 fs/namei.c:4854
do_linkat+0x4af/0x1040 fs/namei.c:4924
__do_sys_link fs/namei.c:4958 [inline]
__se_sys_link fs/namei.c:4956 [inline]
__x64_sys_link+0xd7/0x140 fs/namei.c:4956
x64_sys_call+0x162f/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 0 UID: 0 PID: 5963 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
=====================================================
---
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@googlegroups.com.
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 syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
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If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (3)
[not found] <20250918193455.115481-1-sidharthseela@gmail.com>
@ 2025-09-18 19:56 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-09-18 19:56 UTC (permalink / raw)
To: linux-kernel, sidharthseela, syzkaller-bugs
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
KMSAN: uninit-value in ntfs_read_hdr
=====================================================
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:385
ntfs_dir_emit fs/ntfs3/dir.c:335 [inline]
ntfs_read_hdr+0xfcc/0x13e0 fs/ntfs3/dir.c:385
ntfs_readdir+0xf21/0x1a30 fs/ntfs3/dir.c:496
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+0x3a14/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:218
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 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:4197 [inline]
slab_alloc_node mm/slub.c:4240 [inline]
kmem_cache_alloc_noprof+0x81b/0xec0 mm/slub.c:4247
ntfs_lookup+0x60/0x410 fs/ntfs3/namei.c:71
lookup_one_qstr_excl+0x23f/0x7a0 fs/namei.c:1697
filename_create+0x2cb/0x590 fs/namei.c:4140
do_linkat+0x1fb/0x1040 fs/namei.c:4908
__do_sys_link fs/namei.c:4958 [inline]
__se_sys_link fs/namei.c:4956 [inline]
__x64_sys_link+0xd7/0x140 fs/namei.c:4956
x64_sys_call+0x162f/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 1 UID: 0 PID: 6379 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
=====================================================
Tested on:
commit: cbf658dd Merge tag 'net-6.17-rc7' of git://git.kernel...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1430c0e2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1b093ccee5a9e08c
dashboard link: https://syzkaller.appspot.com/bug?extid=332bd4e9d148f11a87dc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=11383f62580000
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (3)
[not found] <20250922180305.163051-2-sidharthseela@gmail.com>
@ 2025-09-22 19:42 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-09-22 19:42 UTC (permalink / raw)
To: linux-kernel, sidharthseela, syzkaller-bugs
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested on:
commit: d4c7fccf Merge tag 'for-linus-iommufd' of git://git.ke..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=119e427c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1b093ccee5a9e08c
dashboard link: https://syzkaller.appspot.com/bug?extid=332bd4e9d148f11a87dc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=10c1e8e2580000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (3)
[not found] <CAPqLRf3LgEErOjV3V2A6XsaBL=fvhGPFooXWSv4Vt2Q6juWGXQ@mail.gmail.com>
@ 2025-10-26 16:26 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-10-26 16:26 UTC (permalink / raw)
To: kubik.bartlomiej, linux-kernel, syzkaller-bugs
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested on:
commit: 72761a7e Merge tag 'driver-core-6.18-rc3' of git://git..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=122a1e7c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=b8e9002258a92a7b
dashboard link: https://syzkaller.appspot.com/bug?extid=332bd4e9d148f11a87dc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=13ba93cd980000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (3)
[not found] <CAPqLRf1_Y=mCBQKKHoSZJ3BxxsfMWYd+asreyGLofV+ge2UySg@mail.gmail.com>
@ 2025-10-29 20:50 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-10-29 20:50 UTC (permalink / raw)
To: kubik.bartlomiej, linux-kernel, syzkaller-bugs
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested on:
commit: e53642b8 Merge tag 'v6.18-rc3-smb-server-fixes' of git..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1661efe2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=2901a6a99b67fbcc
dashboard link: https://syzkaller.appspot.com/bug?extid=332bd4e9d148f11a87dc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=10be4fe2580000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (3)
[not found] <CAPqLRf36qEgmaLxkGfURAQ549Em_==asxBSuy6PcoKYpXi05ag@mail.gmail.com>
@ 2025-11-05 8:42 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-11-05 8:42 UTC (permalink / raw)
To: kubik.bartlomiej, linux-kernel, syzkaller-bugs
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Tested on:
commit: 84d39fb9 Add linux-next specific files for 20251105
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=1782a114580000
kernel config: https://syzkaller.appspot.com/x/.config?x=d1fcb9bd985db1e7
dashboard link: https://syzkaller.appspot.com/bug?extid=332bd4e9d148f11a87dc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=10d8a532580000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2025-11-05 8:42 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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[not found] <20250918193455.115481-1-sidharthseela@gmail.com>
2025-09-18 19:56 ` [syzbot] [ntfs3?] KMSAN: uninit-value in ntfs_read_hdr (3) syzbot
[not found] <CAPqLRf36qEgmaLxkGfURAQ549Em_==asxBSuy6PcoKYpXi05ag@mail.gmail.com>
2025-11-05 8:42 ` syzbot
[not found] <CAPqLRf1_Y=mCBQKKHoSZJ3BxxsfMWYd+asreyGLofV+ge2UySg@mail.gmail.com>
2025-10-29 20:50 ` syzbot
[not found] <CAPqLRf3LgEErOjV3V2A6XsaBL=fvhGPFooXWSv4Vt2Q6juWGXQ@mail.gmail.com>
2025-10-26 16:26 ` syzbot
[not found] <20250922180305.163051-2-sidharthseela@gmail.com>
2025-09-22 19:42 ` syzbot
2025-09-17 22:55 syzbot
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