From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 34C8327B4FB for ; Fri, 7 Nov 2025 07:30:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762500631; cv=none; b=R27uK/6Pc46eyDik24V+dpdk8lDCUfbfvjfiJqWuU+YRqtWjUYeCye7ljVyPyNpKDgakVUiDDj2lB2u+ZevcM3WoUC0vle6OrQ/M3WBafJTcutsq0bB1Xrdld/ea3bl/CnIeDisbFxdf/UmaD59sEb48xgzmW50LKqVcbE8r+Q4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762500631; c=relaxed/simple; bh=PmuoT3c8H1nbh0QIg54m2H7tK1X89lomLu0DJ4gC6vk=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=BsFvsaAZk88CTS7ErJXeyvlfcwi3nJHZsFB85asJA2qmFffj/d3VJcpNHKUR9+/TWFEHlblLqYOJUxVZ+s+nHxu7+tFOx7A45vhtsFH2xSAPKBn0rUirbhYkuJbMqg66X6uCArzJ/7LzxwIICpEhNPiut9J7oqPirIEFx8oX+7E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.207 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f207.google.com with SMTP id e9e14a558f8ab-431d84fdb91so9625585ab.3 for ; Thu, 06 Nov 2025 23:30:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762500628; x=1763105428; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=wvhS3yJ5RI+iBD3kWFB7/BHHupDd3V14Ik9agSFoCEU=; b=JKDe1xYAPdF5E+5OH0FfwTayTWQa+jiv+QbA8I3PgJc/tcff/QZaSUSYJV1aS3o1vB OCqUtwzC/8mCr4rL50RMxZ+NmcEpi5EP9mUZFiHPg2dI+gdP2AXvoFg7mHz/H8oyw+f6 FCxxW77vYMXbjKoekQMTMO93HavkqOTuaRZwL5VsVd+JXW9BZDnsKDjVCNcqcnVHZPQK w6yxSn49xHIc9ald0+zFyVx+pXtREQPVw9Cht0l6wLNmO/EYWoZkxHoR0wvOCuE0XMzC z7LHHpvljvYeDvJqssVAlaGXXll6Fs3GCO17d5qjl8kCG2Ax03bTR+vfHfchnULA+s2E P0CA== X-Forwarded-Encrypted: i=1; AJvYcCUyKKGH6GxiffsN9aUeClGaRkUzwZNCFCmQlCAUH135tK5j7Qle4p2ShD1j7DbnbQmOrX8mn42EFhamLmQ=@vger.kernel.org X-Gm-Message-State: AOJu0YxYxGhrweZ45syV7+8Xx6f99rWXa1nS8bsNsFxcL3i1I7qKD2Xd x5WloDQHgWAQ7WMOVIxuA788z/O9ZzJ0CJb0UVSxWeLmrpbka9P/uuXDuRJbMZqcPtCQ73staoo OxxIgNvSjf/o7sQewnFMaOEkTd4pXVfdHSsyyyLP/wJdCK2MLOh2qoSt4/ho= X-Google-Smtp-Source: AGHT+IFJk0Ewu+jeYb+KnQD2z6NrRThAVFqW/pLK+NL0wuCeR3kb4YjsvP6XIDWgVBnDoviUPxi+rly+NBHelhzxQuqwhXQ+GFhj Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2283:b0:433:4f00:5d0c with SMTP id e9e14a558f8ab-4335f441229mr27971185ab.20.1762500628341; Thu, 06 Nov 2025 23:30:28 -0800 (PST) Date: Thu, 06 Nov 2025 23:30:28 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <690da014.a70a0220.22f260.0026.GAE@google.com> Subject: [syzbot] [cifs?] memory leak in smb3_fs_context_parse_param From: syzbot To: bharathsm@microsoft.com, linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org, pc@manguebit.org, ronniesahlberg@gmail.com, samba-technical@lists.samba.org, sfrench@samba.org, sprasad@microsoft.com, syzkaller-bugs@googlegroups.com, tom@talpey.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: c2c2ccfd4ba7 Merge tag 'net-6.18-rc5' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=127d2a58580000 kernel config: https://syzkaller.appspot.com/x/.config?x=cb128cd5cb439809 dashboard link: https://syzkaller.appspot.com/bug?extid=72afd4c236e6bc3f4bac compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=104c7012580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1206e17c580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/b0451ba3fe41/disk-c2c2ccfd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d3e8c67119ab/vmlinux-c2c2ccfd.xz kernel image: https://storage.googleapis.com/syzbot-assets/1d8e176e5054/bzImage-c2c2ccfd.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+72afd4c236e6bc3f4bac@syzkaller.appspotmail.com 2025/11/07 05:48:37 executed programs: 5 BUG: memory leak unreferenced object 0xffff888108910420 (size 96): comm "syz.0.17", pid 6085, jiffies 4294942570 hex dump (first 32 bytes): 2f 2f f2 62 06 08 ba df 58 6f dc ea 95 9a 9b 2f //.b....Xo...../ 51 39 f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d Q9..mD.)U..X.I.} backtrace (crc 79c9c7ba): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4975 [inline] slab_alloc_node mm/slub.c:5280 [inline] __do_kmalloc_node mm/slub.c:5641 [inline] __kmalloc_node_track_caller_noprof+0x3aa/0x6b0 mm/slub.c:5751 __kmemdup_nul mm/util.c:64 [inline] kstrdup+0x3c/0x80 mm/util.c:84 smb3_fs_context_parse_param+0x229b/0x36c0 fs/smb/client/fs_context.c:1444 vfs_parse_fs_param+0xf4/0x190 fs/fs_context.c:146 vfs_fsconfig_locked fs/fsopen.c:303 [inline] __do_sys_fsconfig+0x7d3/0x900 fs/fsopen.c:473 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 0xffff888128afa060 (size 96): comm "syz.0.18", pid 6087, jiffies 4294942571 hex dump (first 32 bytes): 2f 2f f2 62 06 08 ba df 58 6f dc ea 95 9a 9b 2f //.b....Xo...../ 51 39 f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d Q9..mD.)U..X.I.} backtrace (crc 79c9c7ba): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4975 [inline] slab_alloc_node mm/slub.c:5280 [inline] __do_kmalloc_node mm/slub.c:5641 [inline] __kmalloc_node_track_caller_noprof+0x3aa/0x6b0 mm/slub.c:5751 __kmemdup_nul mm/util.c:64 [inline] kstrdup+0x3c/0x80 mm/util.c:84 smb3_fs_context_parse_param+0x229b/0x36c0 fs/smb/client/fs_context.c:1444 vfs_parse_fs_param+0xf4/0x190 fs/fs_context.c:146 vfs_fsconfig_locked fs/fsopen.c:303 [inline] __do_sys_fsconfig+0x7d3/0x900 fs/fsopen.c:473 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 0xffff888128afa300 (size 96): comm "syz.0.19", pid 6090, jiffies 4294942572 hex dump (first 32 bytes): 2f 2f f2 62 06 08 ba df 58 6f dc ea 95 9a 9b 2f //.b....Xo...../ 51 39 f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d Q9..mD.)U..X.I.} backtrace (crc 79c9c7ba): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4975 [inline] slab_alloc_node mm/slub.c:5280 [inline] __do_kmalloc_node mm/slub.c:5641 [inline] __kmalloc_noprof+0x3e3/0x6b0 mm/slub.c:5654 kmalloc_noprof include/linux/slab.h:961 [inline] smb3_fs_context_fullpath+0x70/0x1b0 fs/smb/client/fs_context.c:629 smb3_fs_context_parse_param+0x2266/0x36c0 fs/smb/client/fs_context.c:1438 vfs_parse_fs_param+0xf4/0x190 fs/fs_context.c:146 vfs_fsconfig_locked fs/fsopen.c:303 [inline] __do_sys_fsconfig+0x7d3/0x900 fs/fsopen.c:473 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 0xffff888128afa360 (size 96): comm "syz.0.19", pid 6090, jiffies 4294942572 hex dump (first 32 bytes): 2f 2f f2 62 06 08 ba df 58 6f dc ea 95 9a 9b 2f //.b....Xo...../ 51 39 f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d Q9..mD.)U..X.I.} backtrace (crc 79c9c7ba): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4975 [inline] slab_alloc_node mm/slub.c:5280 [inline] __do_kmalloc_node mm/slub.c:5641 [inline] __kmalloc_node_track_caller_noprof+0x3aa/0x6b0 mm/slub.c:5751 __kmemdup_nul mm/util.c:64 [inline] kstrdup+0x3c/0x80 mm/util.c:84 smb3_fs_context_parse_param+0x229b/0x36c0 fs/smb/client/fs_context.c:1444 vfs_parse_fs_param+0xf4/0x190 fs/fs_context.c:146 vfs_fsconfig_locked fs/fsopen.c:303 [inline] __do_sys_fsconfig+0x7d3/0x900 fs/fsopen.c:473 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 0xffff888112c7d900 (size 96): comm "syz.0.21", pid 6128, jiffies 4294943114 hex dump (first 32 bytes): 2f 2f f2 62 06 08 ba df 58 6f dc ea 95 9a 9b 2f //.b....Xo...../ 51 39 f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d Q9..mD.)U..X.I.} backtrace (crc 79c9c7ba): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4975 [inline] slab_alloc_node mm/slub.c:5280 [inline] __do_kmalloc_node mm/slub.c:5641 [inline] __kmalloc_noprof+0x3e3/0x6b0 mm/slub.c:5654 kmalloc_noprof include/linux/slab.h:961 [inline] smb3_fs_context_fullpath+0x70/0x1b0 fs/smb/client/fs_context.c:629 smb3_fs_context_parse_param+0x2266/0x36c0 fs/smb/client/fs_context.c:1438 vfs_parse_fs_param+0xf4/0x190 fs/fs_context.c:146 vfs_fsconfig_locked fs/fsopen.c:303 [inline] __do_sys_fsconfig+0x7d3/0x900 fs/fsopen.c:473 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 0xffff888112c7d420 (size 96): comm "syz.0.21", pid 6128, jiffies 4294943114 hex dump (first 32 bytes): 2f 2f f2 62 06 08 ba df 58 6f dc ea 95 9a 9b 2f //.b....Xo...../ 51 39 f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d Q9..mD.)U..X.I.} backtrace (crc 79c9c7ba): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4975 [inline] slab_alloc_node mm/slub.c:5280 [inline] __do_kmalloc_node mm/slub.c:5641 [inline] __kmalloc_node_track_caller_noprof+0x3aa/0x6b0 mm/slub.c:5751 __kmemdup_nul mm/util.c:64 [inline] kstrdup+0x3c/0x80 mm/util.c:84 smb3_fs_context_parse_param+0x229b/0x36c0 fs/smb/client/fs_context.c:1444 vfs_parse_fs_param+0xf4/0x190 fs/fs_context.c:146 vfs_fsconfig_locked fs/fsopen.c:303 [inline] __do_sys_fsconfig+0x7d3/0x900 fs/fsopen.c:473 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 --- 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