From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f79.google.com (mail-oo1-f79.google.com [209.85.161.79]) (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 E08332F6928 for ; Mon, 29 Dec 2025 11:09:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767006563; cv=none; b=DzPvjVK8piR9XdemnCnihb+Maxnw14VuSE5cTxTrvjRckkir82+bR0dVpXpkOOD6k5OP35saten7ONaypWTiOSXEe4Co8VYr2jf7HxWK3f0bjcb9pKt6eCxxKH9Q1WOFhMv6KfUGnVaXJ5y6OtDFxE0mrOXLWUThIaZfeHGIk8w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767006563; c=relaxed/simple; bh=pAuyDpU5oLWj9w9Cz+NjQIf9qoyI6EVxPrVuUOPMWSI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=jRyCI9BLfiacPX/SIsJzCOWw1xdBH3v3Pp+JZy1BSme/yRVuTA/g0ZcQTu5kgQZI+K7QSYsphws3HLG0WIVDPkZq7pnJUQwNPmT0Omw1F3kNj9p8CNbzj/sRn9zm5RI0bPPI2u4jrjdhoDmZQqOLE5LVizsPyvvdhZqyG9mk+/w= 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=209.85.161.79 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-oo1-f79.google.com with SMTP id 006d021491bc7-65e902a9ce8so12757135eaf.0 for ; Mon, 29 Dec 2025 03:09:21 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767006561; x=1767611361; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=60Xyamx/h3ysjnvTktyovzErOYdK/RULB9LFjkm+8RA=; b=q/ki7Yo/usESZJhh5FC97nvFY49Goa27ayNcmODunlQzw78haa5jgo/7qeWbyKJQXa I5SETVa1hYWDiizLAtKNO1ybMkkEiQ5Il1/TZ3sIhv9/1aNF9/kpC7pF8WdLBDRFNWzT W07D5sZSQ4En06jDIx8REB7TUoQF4rxIUeQt5Hyn7ubsQoD0PFuQThwRK6uJecykp+mG lB40oacISgQ4Ghznls2Vuw87MS9iDSEdZqU7EYsbAuY1YcRHN9OOMXj+vvlEsgreAA1T 4BtF69Di2TkBXt0OT9M115GWzQigf4ldRzXNolPbBjpEvS8KdzmOZ4j8SgPt5HbShzR0 4evA== X-Forwarded-Encrypted: i=1; AJvYcCWXuadhBfBXB7MiJ9JeQSVhjDBk5iyjZi3SWTeXCSVhkuIfV9RJlXpYbYPz074p2M2SuzLR+zjj//uwd80=@vger.kernel.org X-Gm-Message-State: AOJu0YzFWuUa7gQer0jZJL7PPP1DWqWTy8nhtVg0Vw0pJmOlzcSFpKmS 5rH7uaChZWJkmz2wQZSgFsG6ZZQRqiBmb/hU/PrQgu3fdqPU8grw8HDSwpSs/lx9hAqBLhVNuRI IF2dEp4f9hVauMnLDtPnKX07mjTnpTbONCkFFHaRTJUUCo5CQ7NInF/UhCHk= X-Google-Smtp-Source: AGHT+IHUvuTKW6aL+r29nwMOlej4fRaox1OMiLU6rEO9bqqPpwqwJv4xa5pzZrmM9T0v3TgFjFyt9taUN+yrJwEqPYdOygQn6WUr Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:d744:0:b0:65c:f062:bdde with SMTP id 006d021491bc7-65cfe799322mr11668000eaf.36.1767006560880; Mon, 29 Dec 2025 03:09:20 -0800 (PST) Date: Mon, 29 Dec 2025 03:09:20 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69526160.050a0220.3b1790.0007.GAE@google.com> Subject: [syzbot] [fs?] BUG: corrupted list in vfs_setxattr From: syzbot To: brauner@kernel.org, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 40384c840ea1 Linux 6.13-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=129395e8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7 dashboard link: https://syzkaller.appspot.com/bug?extid=51930590c5ad85537daf compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/92994d383dd8/disk-40384c84.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5296b519dbbf/vmlinux-40384c84.xz kernel image: https://storage.googleapis.com/syzbot-assets/284141b3f7b6/bzImage-40384c84.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+51930590c5ad85537daf@syzkaller.appspotmail.com list_del corruption. prev->next should be ffffc90004bef8c0, but was ffff88805cd4d170. (prev=ffff88805cd4d170) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:64! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 12801 Comm: syz.4.1836 Not tainted 6.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__list_del_entry_valid_or_report+0x11b/0x140 lib/list_debug.c:62 Code: 36 fc 90 0f 0b 48 c7 c7 20 67 5f 8c 4c 89 fe e8 db 67 36 fc 90 0f 0b 48 c7 c7 80 67 5f 8c 4c 89 fe 48 89 d9 e8 c6 67 36 fc 90 <0f> 0b 48 c7 c7 00 68 5f 8c 4c 89 fe 4c 89 f1 e8 b1 67 36 fc 90 0f RSP: 0018:ffffc90004bef738 EFLAGS: 00010046 RAX: 000000000000006d RBX: ffff88805cd4d170 RCX: 1ea682c095ed3b00 RDX: ffffc9000ef54000 RSI: 00000000000051e2 RDI: 00000000000051e3 RBP: ffffc90004bef990 R08: ffffffff817f075c R09: fffffbfff1cfa210 R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: dffffc0000000000 R13: ffffc90004bef8c0 R14: ffff88805cd4d170 R15: ffffc90004bef8c0 FS: 00007f75e3bba6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f75e3bb9fb8 CR3: 000000004d838000 CR4: 0000000000350ef0 Call Trace: __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del include/linux/list.h:229 [inline] rwsem_try_write_lock kernel/locking/rwsem.c:661 [inline] rwsem_down_write_slowpath+0xf9b/0x13b0 kernel/locking/rwsem.c:1150 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:818 [inline] vfs_setxattr+0x1e1/0x430 fs/xattr.c:320 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x2af/0x430 fs/xattr.c:665 path_setxattrat+0x440/0x510 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f75e2d80849 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:00007f75e3bba058 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007f75e2f46080 RCX: 00007f75e2d80849 RDX: 0000000020001840 RSI: 0000000020000240 RDI: 0000000020000200 RBP: 00007f75e2df3986 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000002d6 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f75e2f46080 R15: 00007ffcc95a8aa8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x11b/0x140 lib/list_debug.c:62 Code: 36 fc 90 0f 0b 48 c7 c7 20 67 5f 8c 4c 89 fe e8 db 67 36 fc 90 0f 0b 48 c7 c7 80 67 5f 8c 4c 89 fe 48 89 d9 e8 c6 67 36 fc 90 <0f> 0b 48 c7 c7 00 68 5f 8c 4c 89 fe 4c 89 f1 e8 b1 67 36 fc 90 0f RSP: 0018:ffffc90004bef738 EFLAGS: 00010046 RAX: 000000000000006d RBX: ffff88805cd4d170 RCX: 1ea682c095ed3b00 RDX: ffffc9000ef54000 RSI: 00000000000051e2 RDI: 00000000000051e3 RBP: ffffc90004bef990 R08: ffffffff817f075c R09: fffffbfff1cfa210 R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: dffffc0000000000 R13: ffffc90004bef8c0 R14: ffff88805cd4d170 R15: ffffc90004bef8c0 FS: 00007f75e3bba6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f75e3bb9fb8 CR3: 000000004d838000 CR4: 0000000000350ef0 --- 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 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