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List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1:b0:433:7c9a:e8b6 with SMTP id e9e14a558f8ab-4338becc429mr25466785ab.9.1762824002789; Mon, 10 Nov 2025 17:20:02 -0800 (PST) Date: Mon, 10 Nov 2025 17:20:02 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69128f42.a70a0220.22f260.0119.GAE@google.com> Subject: Re: [syzbot] [ntfs3?] memory leak in ni_add_subrecord From: syzbot To: eadavis@qq.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: memory leak in ni_add_subrecord BUG: memory leak unreferenced object 0xffff888126a90e00 (size 128): comm "syz.0.17", pid 6726, jiffies 4294946753 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 b8 51 13 81 88 ff ff ..........Q..... backtrace (crc 5c7e5ed8): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4979 [inline] slab_alloc_node mm/slub.c:5284 [inline] __kmalloc_cache_noprof+0x3a6/0x5b0 mm/slub.c:5762 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] ni_add_subrecord+0x31/0x180 fs/ntfs3/frecord.c:317 ntfs_look_free_mft+0xf0/0x790 fs/ntfs3/fsntfs.c:715 ni_ins_attr_ext+0x40c/0x690 fs/ntfs3/frecord.c:988 ni_insert_attr+0x1d1/0x480 fs/ntfs3/frecord.c:1091 ni_insert_resident+0x85/0x140 fs/ntfs3/frecord.c:1475 ni_add_name+0x15b/0x2e0 fs/ntfs3/frecord.c:2987 ni_rename+0x4c/0x100 fs/ntfs3/frecord.c:3026 ntfs_rename+0x46c/0x5d0 fs/ntfs3/namei.c:332 vfs_rename+0x94b/0x1340 fs/namei.c:5216 do_renameat2+0x5f5/0x870 fs/namei.c:5364 __do_sys_rename fs/namei.c:5411 [inline] __se_sys_rename fs/namei.c:5409 [inline] __x64_sys_rename+0x42/0x50 fs/namei.c:5409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff888108b8c400 (size 1024): comm "syz.0.17", pid 6726, jiffies 4294946753 hex dump (first 32 bytes): 46 49 4c 45 2a 00 03 00 00 00 00 00 00 00 00 00 FILE*........... 03 00 00 00 30 00 01 00 88 02 00 00 00 04 00 00 ....0........... backtrace (crc 7197c55e): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4979 [inline] slab_alloc_node mm/slub.c:5284 [inline] __do_kmalloc_node mm/slub.c:5645 [inline] __kmalloc_noprof+0x3e3/0x6b0 mm/slub.c:5658 kmalloc_noprof include/linux/slab.h:961 [inline] mi_init+0x2b/0x50 fs/ntfs3/record.c:105 mi_format_new+0x40/0x220 fs/ntfs3/record.c:422 ni_add_subrecord+0x6b/0x180 fs/ntfs3/frecord.c:321 ntfs_look_free_mft+0xf0/0x790 fs/ntfs3/fsntfs.c:715 ni_ins_attr_ext+0x40c/0x690 fs/ntfs3/frecord.c:988 ni_insert_attr+0x1d1/0x480 fs/ntfs3/frecord.c:1091 ni_insert_resident+0x85/0x140 fs/ntfs3/frecord.c:1475 ni_add_name+0x15b/0x2e0 fs/ntfs3/frecord.c:2987 ni_rename+0x4c/0x100 fs/ntfs3/frecord.c:3026 ntfs_rename+0x46c/0x5d0 fs/ntfs3/namei.c:332 vfs_rename+0x94b/0x1340 fs/namei.c:5216 do_renameat2+0x5f5/0x870 fs/namei.c:5364 __do_sys_rename fs/namei.c:5411 [inline] __se_sys_rename fs/namei.c:5409 [inline] __x64_sys_rename+0x42/0x50 fs/namei.c:5409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff88812586cb00 (size 128): comm "syz.0.18", pid 6736, jiffies 4294946763 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 e8 f5 0e 81 88 ff ff ................ backtrace (crc db17ea11): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4979 [inline] slab_alloc_node mm/slub.c:5284 [inline] __kmalloc_cache_noprof+0x3a6/0x5b0 mm/slub.c:5762 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] ni_add_subrecord+0x31/0x180 fs/ntfs3/frecord.c:317 ntfs_look_free_mft+0xf0/0x790 fs/ntfs3/fsntfs.c:715 ni_ins_attr_ext+0x40c/0x690 fs/ntfs3/frecord.c:988 ni_insert_attr+0x1d1/0x480 fs/ntfs3/frecord.c:1091 ni_insert_resident+0x85/0x140 fs/ntfs3/frecord.c:1475 ni_add_name+0x15b/0x2e0 fs/ntfs3/frecord.c:2987 ni_rename+0x4c/0x100 fs/ntfs3/frecord.c:3026 ntfs_rename+0x46c/0x5d0 fs/ntfs3/namei.c:332 vfs_rename+0x94b/0x1340 fs/namei.c:5216 do_renameat2+0x5f5/0x870 fs/namei.c:5364 __do_sys_rename fs/namei.c:5411 [inline] __se_sys_rename fs/namei.c:5409 [inline] __x64_sys_rename+0x42/0x50 fs/namei.c:5409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff8881275a6000 (size 1024): comm "syz.0.18", pid 6736, jiffies 4294946763 hex dump (first 32 bytes): 46 49 4c 45 2a 00 03 00 00 00 00 00 00 00 00 00 FILE*........... 03 00 00 00 30 00 01 00 88 02 00 00 00 04 00 00 ....0........... backtrace (crc 7197c55e): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4979 [inline] slab_alloc_node mm/slub.c:5284 [inline] __do_kmalloc_node mm/slub.c:5645 [inline] __kmalloc_noprof+0x3e3/0x6b0 mm/slub.c:5658 kmalloc_noprof include/linux/slab.h:961 [inline] mi_init+0x2b/0x50 fs/ntfs3/record.c:105 mi_format_new+0x40/0x220 fs/ntfs3/record.c:422 ni_add_subrecord+0x6b/0x180 fs/ntfs3/frecord.c:321 ntfs_look_free_mft+0xf0/0x790 fs/ntfs3/fsntfs.c:715 ni_ins_attr_ext+0x40c/0x690 fs/ntfs3/frecord.c:988 ni_insert_attr+0x1d1/0x480 fs/ntfs3/frecord.c:1091 ni_insert_resident+0x85/0x140 fs/ntfs3/frecord.c:1475 ni_add_name+0x15b/0x2e0 fs/ntfs3/frecord.c:2987 ni_rename+0x4c/0x100 fs/ntfs3/frecord.c:3026 ntfs_rename+0x46c/0x5d0 fs/ntfs3/namei.c:332 vfs_rename+0x94b/0x1340 fs/namei.c:5216 do_renameat2+0x5f5/0x870 fs/namei.c:5364 __do_sys_rename fs/namei.c:5411 [inline] __se_sys_rename fs/namei.c:5409 [inline] __x64_sys_rename+0x42/0x50 fs/namei.c:5409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff888125f77780 (size 128): comm "syz.0.19", pid 6746, jiffies 4294946771 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 c8 51 13 81 88 ff ff ..........Q..... backtrace (crc af0a413f): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4979 [inline] slab_alloc_node mm/slub.c:5284 [inline] __kmalloc_cache_noprof+0x3a6/0x5b0 mm/slub.c:5762 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] ni_add_subrecord+0x31/0x180 fs/ntfs3/frecord.c:317 ntfs_look_free_mft+0xf0/0x790 fs/ntfs3/fsntfs.c:715 ni_ins_attr_ext+0x40c/0x690 fs/ntfs3/frecord.c:988 ni_insert_attr+0x1d1/0x480 fs/ntfs3/frecord.c:1091 ni_insert_resident+0x85/0x140 fs/ntfs3/frecord.c:1475 ni_add_name+0x15b/0x2e0 fs/ntfs3/frecord.c:2987 ni_rename+0x4c/0x100 fs/ntfs3/frecord.c:3026 ntfs_rename+0x46c/0x5d0 fs/ntfs3/namei.c:332 vfs_rename+0x94b/0x1340 fs/namei.c:5216 do_renameat2+0x5f5/0x870 fs/namei.c:5364 __do_sys_rename fs/namei.c:5411 [inline] __se_sys_rename fs/namei.c:5409 [inline] __x64_sys_rename+0x42/0x50 fs/namei.c:5409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 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: 4427259c Merge tag 'riscv-for-linus-6.18-rc6' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1771960a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=cb128cd5cb439809 dashboard link: https://syzkaller.appspot.com/bug?extid=3932ccb896e06f7414c9 compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=167e960a580000