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AJvYcCXsMSyBDO/ybghV7LbCohQPfujjMlykN/udQiCooha+GK7V6Z87AbDhwdMQF/OEzs0et3+SF9rPnNkvMhU=@vger.kernel.org X-Gm-Message-State: AOJu0YyUx4ePfnZx530k0YZRxg5SRBkW8aHKtvNqTcuqdgdJA2z1MXHf zXJ/4WKW718OcoyPRrhsiLyYVy97IMpKmgH6cchKkzI7u5FYCEq8QQy6Fmgmtq6HOCQH8We74m2 dBSxarfNtbPCh4GAdRgPNFj5T5geWWizy4UKAzm8WRY02O3jMuFecgNkOero= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:c82:b0:662:f8a9:9f7 with SMTP id 006d021491bc7-679c44d0e46mr4209287eaf.37.1771847787279; Mon, 23 Feb 2026 03:56:27 -0800 (PST) Date: Mon, 23 Feb 2026 03:56:27 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <699c406b.050a0220.1876f9.0002.GAE@google.com> Subject: [syzbot] [ntfs3?] WARNING in attr_data_get_block_locked From: syzbot To: almaz.alexandrovich@paragon-software.com, linux-kernel@vger.kernel.org, ntfs3@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 956b9cbd7f15 Merge tag 'kbuild-fixes-7.0-1' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=148bb15a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=65722f41f7edc17e dashboard link: https://syzkaller.appspot.com/bug?extid=c1e9aedbd913fadad617 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14f61ffa580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15833b3a580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-956b9cbd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f0b3757a15ed/vmlinux-956b9cbd.xz kernel image: https://storage.googleapis.com/syzbot-assets/c564e8613b4e/bzImage-956b9cbd.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/30f6900c6fc3/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c1e9aedbd913fadad617@syzkaller.appspotmail.com ------------[ cut here ]------------ 1 WARNING: fs/ntfs3/attrib.c:1222 at attr_data_get_block_locked+0x174a/0x22a0 fs/ntfs3/attrib.c:1222, CPU#0: syz.0.17/5462 Modules linked in: CPU: 0 UID: 0 PID: 5462 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:attr_data_get_block_locked+0x174a/0x22a0 fs/ntfs3/attrib.c:1222 Code: 89 ee 49 89 d6 e8 d6 19 a6 fe 4d 89 f2 44 89 ac 24 bc 00 00 00 45 29 ea 73 1e e8 01 18 a6 fe e9 47 f9 ff ff e8 f7 17 a6 fe 90 <0f> 0b 90 41 bf ea ff ff ff e9 d6 fa ff ff 48 b8 00 00 00 00 00 fc RSP: 0018:ffffc900049079c0 EFLAGS: 00010293 RAX: ffffffff831f83a9 RBX: 00000000ffffffff RCX: ffff888000ea0000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 00000000ffffffff RBP: ffffc90004907be8 R08: 0000000000000000 R09: 1ffff11002487041 R10: dffffc0000000000 R11: ffffed1002487042 R12: 0000000000000002 R13: dffffc0000000000 R14: 0000000000002000 R15: 0000000000000007 FS: 000055558ba85500(0000) GS:ffff88808ca5b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd19d7909c0 CR3: 0000000012819000 CR4: 0000000000352ef0 Call Trace: attr_data_get_block+0x250/0x310 fs/ntfs3/attrib.c:982 ntfs_fallocate+0xfac/0x1220 fs/ntfs3/file.c:677 vfs_fallocate+0x669/0x7e0 fs/open.c:340 ksys_fallocate fs/open.c:364 [inline] __do_sys_fallocate fs/open.c:369 [inline] __se_sys_fallocate fs/open.c:367 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:367 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1e3d39c629 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffbfb65448 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f1e3d615fa0 RCX: 00007f1e3d39c629 RDX: 0000000000007351 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f1e3d432b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1e3d615fac R14: 00007f1e3d615fa0 R15: 00007f1e3d615fa0 --- 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 If you attach or paste a git patch, syzbot will apply it before testing. 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