From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f72.google.com (mail-ot1-f72.google.com [209.85.210.72]) (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 15E8C354AC7 for ; Sat, 18 Apr 2026 12:57:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776517051; cv=none; b=KTbuks02Bh+1OlllTFw3tD4fnuuwjgl6dl6WzJSM5QDaDxB2e3bjIWhmzRGP53FWYfB7mCTT6BSIAPLLmtEwiDc0FFnwra9qFWy2xpHHGMiEFPy5dLZ+z7/jfOek82o5qX74vgzH3G2hBNANS6ZsAD8mhAz/8D7OwMXYchzQ3zE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776517051; c=relaxed/simple; bh=m5TXc0xCSiuzgqMaXP9d/gmwP2ql45OLdLQzhqzEiWk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=fN4NV5XyFFNEbifWFh+1seDX4FxMbhUXc7y+J1vxrFfC6Kye3MEu4xFy/fp2M9zkHQjsN0rDUKVW8sOtmDs/Hoqh2Y95+l7DQ0ByJKDI/+1b3KDqpl/XkyFIxPYs/LWm3HKyRA15zRMqUeeXlyFLZnbLaONE/ZLM8whFn6OnwcM= 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=209.85.210.72 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-ot1-f72.google.com with SMTP id 46e09a7af769-7dc3df52bd9so2060926a34.0 for ; Sat, 18 Apr 2026 05:57:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776517049; x=1777121849; 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=h9S+feeeznlypR2cUylRZn0Dt7ICRGLjRtslzmuUg9A=; b=VMxQWoCQIkCTuAniW9DVzY9r1Z+uD29lfDwwknN/wOK0wzQU71uof6lxtJ/jz4VDRT d7Cazr/ZZeQ02Rl5SdK+lvsz22vQCfT5SfPZlfO3/9bAfAHVlSPtoSMx29ZIO3ip1bJ+ R4ZpIIg6aMct/9Snqvyx8Rz1/16NNHOby8J3rItc854TVxBNxzlRwPCtNe4t75p6BxRq GVjKV1aYVjtjxzRaZ7z2rVou49Kwq7XTtHryPMIc1Mt1Da4IjZ+nnGG3ViCjO/hpOJYf +c6IKbqoADWh7zebcRk5IuHl3PXrZgPDMb7YZcvToFmi8ZBg+ClylG0UVOA6rsc+t2SB PCTg== X-Gm-Message-State: AOJu0Yz7C2qPphoVgteOGrLpXlRNO9ENrHxRXDlHFCRvFiaAmSoPtT5y d1pxnLCYcs0osmfJBhMMhpHmbWoMjI71yoaxIQVu/pos/vzCPcaOOhfVCD1F0c0BRTeZtgdzOQA DyX3AWLDm1GqAUkvoUkOUGoPkPdxKgjeTHg8w/bW1H4I5wjKV5lttbKLxqUQ= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1ca0:b0:67e:16b4:aa1b with SMTP id 006d021491bc7-69462f3f1famr3867307eaf.53.1776517048977; Sat, 18 Apr 2026 05:57:28 -0700 (PDT) Date: Sat, 18 Apr 2026 05:57:28 -0700 In-Reply-To: <69651807.050a0220.eaf7.00b2.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69e37fb8.050a0220.24bfd3.0008.GAE@google.com> Subject: Forwarded: Re: [syzbot] WARNING in rgblk_free (2) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] WARNING in rgblk_free (2) Author: tristmd@gmail.com #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >>From b5a6713d34c32c37d273e16bd59099a0a6370de9 Mon Sep 17 00:00:00 2001 From: Tristan Madani Date: Sat, 18 Apr 2026 12:57:17 +0000 Subject: [PATCH] gfs2: replace WARN_ON_ONCE with fs_warn in rgblk_free rgblk_free() triggers WARN_ON_ONCE when gfs2_rbm_from_block() fails due to a block number outside the resource group bounds. This can be triggered by a corrupted filesystem image, causing unnecessary kernel warnings. Replace WARN_ON_ONCE with fs_warn() to provide a more informative diagnostic message while avoiding the kernel warning. Reported-by: syzbot+3e2c95229d1ab81a0bfd@syzkaller.appspotmail.com Fixes: 5b924ae2b7b4 ("GFS2: fix rgrp end rounding problem for bsize < page size") Cc: stable@vger.kernel.org Signed-off-by: Tristan Madani --- fs/gfs2/rgrp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 26d6c1eea5591..7707c1b1082f8 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -2266,8 +2266,11 @@ static void rgblk_free(struct gfs2_sbd *sdp, struct gfs2_rgrpd *rgd, struct gfs2_bitmap *bi, *bi_prev = NULL; rbm.rgd = rgd; - if (WARN_ON_ONCE(gfs2_rbm_from_block(&rbm, bstart))) + if (gfs2_rbm_from_block(&rbm, bstart)) { + fs_warn(sdp, "rgblk_free: block %llu outside rgrp\n", + (unsigned long long)bstart); return; + } while (blen--) { bi = rbm_bi(&rbm); if (bi != bi_prev) { -- 2.47.3