From nobody Thu Oct 2 01:59:14 2025 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 DF51B189 for ; Tue, 23 Sep 2025 17:47:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758649666; cv=none; b=EPlUUPBXBHU/3e3JU+W6fMHpGN4upMBImfR+5Q1Ol7Dgno3Cq9kFwKRMc5ZdOc0RSwHNBaCF4Xuwrc862yW1VUf7bpOKcD9lG8lWk/+IRthiEmZtpInpFIqapgSEZ7Aoo3K79p756lojVG5RNlIeetKiF/SGevBilNugijjLqOI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758649666; c=relaxed/simple; bh=NYhVbLQmCiKAkkw+FgLiYG5boqLHzYRj7IsPHhe86tQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Ud/CC8DNv42TrLPUDe4HVSk+LKgH0JOoLM2fL52k0D/fA3V1P3twPlO1iOA2a0QyIx02vYTSVLMjlo3i/AE5+b5PNjGYwl4zZul36FlVOlErOroQgR/LbUyUckpaSTG+xVkUAusfzluVERSU+fW/gE75Qbn/8oPzYqOiWY+YiWw= 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=209.85.166.199 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-f199.google.com with SMTP id e9e14a558f8ab-42574804553so74863415ab.0 for ; Tue, 23 Sep 2025 10:47:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758649664; x=1759254464; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=UweK9PxaB89GoyVZ7u3bZJ3Y7spgw/H89b5lz78D1OQ=; b=XmWLCTzT+8paJyblDZpiqlfcDF0XcBYu9tzvRmMLqGzIosaMmmMre7Wdj59uXTw7tD ZuU2Q8Br/HtFnAxI7AuhVENpc3Z9Iiq5ia2eQVB5xmaVHopXhhjoSYZyMf42SLKxtRnN g93E53HkpozW0miWW8q5sEK9rpwA8L8Vj6suRV1RVu21w4PHQqg7bjJFsJU2gBHNRYX9 AKhdtb8yyrZs0HrehzjMyQ52iZICiHXivwWf7LGyUmc25SY9k+/a2hy8cCzAOoSk+lpz rWiF+J2vX/C99DqoJX5lNxf4md5KQJlcSGtwAu+P5lgF5YSxgwcRvbMZ9KYj1xefchO/ J5QQ== X-Gm-Message-State: AOJu0YwuRYxD0CGpFiblk4lg9LzAK8ElRQCuVAk9VhUScGSqgeEn/XQn vseuxG4Y7/UVpW2ZyeGdy2kQulkLB54CuYGMjtyLxInyVC933lm6tmRQJ6OEM0fr3snzXEEyA8Q dPJdxgn5bDHwgne3xbVdF5KOLji6XUypg/V5k2MO5NQaMO/cMmE2qpszRVXI= X-Google-Smtp-Source: AGHT+IEKIcYQjAktB74rtlMsqNYZaVUFQTqnE4I8zsg7F2qNS2ekhJKu4/izsmu+LRYifwD3JBc+iWt9FU55iUkdbGDetfxJUEFb Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:152e:b0:424:80f2:2a3 with SMTP id e9e14a558f8ab-42581e1717cmr55992715ab.6.1758649664173; Tue, 23 Sep 2025 10:47:44 -0700 (PDT) Date: Tue, 23 Sep 2025 10:47:44 -0700 In-Reply-To: <68197d2b.050a0220.23d401.2859.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68d2dd40.a70a0220.4f78.000c.GAE@google.com> Subject: Forwarded: KMSAN: uninit-value in BT_STACK_DUMP From: syzbot To: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: KMSAN: uninit-value in BT_STACK_DUMP Author: rampxxxx@gmail.com #syz test --- diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c index ab11849cf9cc..4fbb0e39270c 100644 --- a/fs/jfs/jfs_dtree.c +++ b/fs/jfs/jfs_dtree.c @@ -770,6 +770,10 @@ int dtSearch(struct inode *ip, struct component_name * key, ino_t * data, /* Something's corrupted, mark filesystem dirty so * chkdsk will fix it. */ + btsp =3D btstack->top; + btsp->bn =3D 0; + btsp->index =3D 0; + jfs_error(sb, "stack overrun!\n"); BT_STACK_DUMP(btstack); rc =3D -EIO;