From: syzbot <syzbot+7adcddaeeb860e5d3f2f@syzkaller.appspotmail.com>
To: kartikey406@gmail.com, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [ntfs3?] memory leak in run_add_entry (2)
Date: Fri, 20 Mar 2026 20:36:02 -0700 [thread overview]
Message-ID: <69be1222.050a0220.3bf4de.0039.GAE@google.com> (raw)
In-Reply-To: <20260321020935.1113436-1-kartikey406@gmail.com>
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
memory leak in run_add_entry
BUG: memory leak
unreferenced object 0xffff8881293eb400 (size 64):
comm "syz.0.17", pid 6727, jiffies 4294946367
hex dump (first 32 bytes):
00 00 00 00 01 00 00 00 1e 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 692543f4):
kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
slab_post_alloc_hook mm/slub.c:4543 [inline]
slab_alloc_node mm/slub.c:4866 [inline]
__do_kmalloc_node mm/slub.c:5259 [inline]
__kvmalloc_node_noprof+0x53d/0x770 mm/slub.c:6752
run_add_entry+0x108/0x730 fs/ntfs3/run.c:390
attr_allocate_clusters+0x15a/0x450 fs/ntfs3/attrib.c:199
indx_create_allocate fs/ntfs3/index.c:1449 [inline]
indx_insert_into_root+0x575/0xb50 fs/ntfs3/index.c:1705
indx_insert_entry+0x182/0x290 fs/ntfs3/index.c:1995
ni_add_name+0x1ab/0x2e0 fs/ntfs3/frecord.c:2764
ntfs_link_inode+0x95/0xc0 fs/ntfs3/inode.c:1794
ntfs_link+0xb4/0x180 fs/ntfs3/namei.c:146
vfs_link+0x270/0x5a0 fs/namei.c:5746
filename_linkat+0x262/0x3c0 fs/namei.c:5814
__do_sys_link fs/namei.c:5847 [inline]
__se_sys_link fs/namei.c:5843 [inline]
__x64_sys_link+0x4b/0x70 fs/namei.c:5843
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
BUG: memory leak
unreferenced object 0xffff888108dbf5c0 (size 64):
comm "syz.0.18", pid 6734, jiffies 4294946376
hex dump (first 32 bytes):
00 00 00 00 01 00 00 00 1e 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 692543f4):
kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
slab_post_alloc_hook mm/slub.c:4543 [inline]
slab_alloc_node mm/slub.c:4866 [inline]
__do_kmalloc_node mm/slub.c:5259 [inline]
__kvmalloc_node_noprof+0x53d/0x770 mm/slub.c:6752
run_add_entry+0x108/0x730 fs/ntfs3/run.c:390
attr_allocate_clusters+0x15a/0x450 fs/ntfs3/attrib.c:199
indx_create_allocate fs/ntfs3/index.c:1449 [inline]
indx_insert_into_root+0x575/0xb50 fs/ntfs3/index.c:1705
indx_insert_entry+0x182/0x290 fs/ntfs3/index.c:1995
ni_add_name+0x1ab/0x2e0 fs/ntfs3/frecord.c:2764
ntfs_link_inode+0x95/0xc0 fs/ntfs3/inode.c:1794
ntfs_link+0xb4/0x180 fs/ntfs3/namei.c:146
vfs_link+0x270/0x5a0 fs/namei.c:5746
filename_linkat+0x262/0x3c0 fs/namei.c:5814
__do_sys_link fs/namei.c:5847 [inline]
__se_sys_link fs/namei.c:5843 [inline]
__x64_sys_link+0x4b/0x70 fs/namei.c:5843
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF
Tested on:
commit: 42bddab0 Merge tag 'execve-v7.0-rc5' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1059ca06580000
kernel config: https://syzkaller.appspot.com/x/.config?x=e2bba615ee79faa5
dashboard link: https://syzkaller.appspot.com/bug?extid=7adcddaeeb860e5d3f2f
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch: https://syzkaller.appspot.com/x/patch.diff?x=10d866da580000
next parent reply other threads:[~2026-03-21 3:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260321020935.1113436-1-kartikey406@gmail.com>
2026-03-21 3:36 ` syzbot [this message]
[not found] <20260321035841.1115548-1-kartikey406@gmail.com>
2026-03-21 5:50 ` [syzbot] [ntfs3?] memory leak in run_add_entry (2) syzbot
2026-03-20 22:56 syzbot
2026-03-21 4:52 ` Edward Adam Davis
2026-03-21 6:02 ` syzbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=69be1222.050a0220.3bf4de.0039.GAE@google.com \
--to=syzbot+7adcddaeeb860e5d3f2f@syzkaller.appspotmail.com \
--cc=kartikey406@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox