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AJvYcCUsI2Eln96aX3AEOt5ktLXkNwWHRIj13OontlA7T0kEs19xQXZ6jpjdBWya7T6kKy/cgfl121Qe/zR9W+0=@vger.kernel.org X-Gm-Message-State: AOJu0YwwN0+ZsCCXsPiIBoYwx/x5nDwpNrfBgG9b2sb5ojlIMmeadZMy 1UI4mHiYemRJM6yGIbQtt3K+cqAxlqLlLQx31yFmcGGkc5UCaC5QxFk4Z9NRXBB71/DXrtj50ZH RM2wMCZdY94pKHU+3jmcqONeq5jOK8XvyUPMKpIBglKZFXcICMy9rFz7976k= X-Google-Smtp-Source: AGHT+IEONtvsqEyT9Cy/dVpWDrwJVGJAQsAH+BirtcW0EGh8mtcHkqDGk5tj5hD9ivfUGYWOKYcwm3AYaVL/wJPdVXWCWTyCEkqY Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3782:b0:412:c994:db15 with SMTP id e9e14a558f8ab-42481947474mr87183285ab.14.1758327214465; Fri, 19 Sep 2025 17:13:34 -0700 (PDT) Date: Fri, 19 Sep 2025 17:13:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68cdf1ae.a00a0220.37dadf.0021.GAE@google.com> Subject: [syzbot] [nfs?] WARNING in nsfs_fh_to_dentry From: syzbot To: amir73il@gmail.com, chuck.lever@oracle.com, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 846bd2225ec3 Add linux-next specific files for 20250919 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=144b8d04580000 kernel config: https://syzkaller.appspot.com/x/.config?x=135377594f35b576 dashboard link: https://syzkaller.appspot.com/bug?extid=9eefe09bedd093f156c2 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=1724be42580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12fc2712580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c53d48022f8a/disk-846bd222.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/483534e784c8/vmlinux-846bd222.xz kernel image: https://storage.googleapis.com/syzbot-assets/721b36eec9b3/bzImage-846bd222.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9eefe09bedd093f156c2@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: fs/nsfs.c:493 at nsfs_fh_to_dentry+0xcc5/0xdc0 fs/nsfs.c:493, CPU#1: syz.0.17/6050 Modules linked in: CPU: 1 UID: 0 PID: 6050 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:nsfs_fh_to_dentry+0xcc5/0xdc0 fs/nsfs.c:493 Code: 7c 24 60 e9 10 f8 ff ff e8 48 01 79 ff 90 0f 0b 90 e9 09 f6 ff ff e8 3a 01 79 ff 90 0f 0b 90 e9 81 f6 ff ff e8 2c 01 79 ff 90 <0f> 0b 90 e9 d0 f6 ff ff e8 1e 01 79 ff 45 31 ff e9 d9 f7 ff ff e8 RSP: 0018:ffffc90002f97a20 EFLAGS: 00010293 RAX: ffffffff824717f4 RBX: 00000000effffffd RCX: ffff888031990000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000effffffd RBP: ffffc90002f97b10 R08: ffffffff8fe4db77 R09: 1ffffffff1fc9b6e R10: dffffc0000000000 R11: fffffbfff1fc9b6f R12: 1ffff920005f2f4c R13: ffff888028d74894 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000555569cd2500(0000) GS:ffff8881258a2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32363fff CR3: 0000000028a1e000 CR4: 00000000003526f0 Call Trace: exportfs_decode_fh_raw+0x178/0x6e0 fs/exportfs/expfs.c:456 do_handle_to_path+0xa4/0x1a0 fs/fhandle.c:276 handle_to_path fs/fhandle.c:400 [inline] do_handle_open+0x6b4/0x8f0 fs/fhandle.c:415 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1a5d78ec29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffff390c9e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130 RAX: ffffffffffffffda RBX: 00007f1a5d9d5fa0 RCX: 00007f1a5d78ec29 RDX: 0000000000400040 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007f1a5d811e41 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1a5d9d5fa0 R14: 00007f1a5d9d5fa0 R15: 0000000000000003 --- 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