From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f70.google.com (mail-oa1-f70.google.com [209.85.160.70]) (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 6E1A026E71E for ; Fri, 17 Apr 2026 16:21:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776442897; cv=none; b=CBvK6LHyk7o06gxGMGoYJD7Uijv/acXTOVX/T7zGCldMaexmV+tkUMXiOT7LSCQOPvfR+742ubz5K6v9o2cTmE6CM9Vgnqeu4DchRr5X6FXLQMChdHNmsHysn2XZMX20V56Fz2bf+yEZxH8IU4sTPymfUtfQ0wR+4nGCwlbWin4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776442897; c=relaxed/simple; bh=M4xHxtLmiVTjUAbaSJ7kRwpiXpcxXXXXJ/TU5/VCRss=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=XPP2ZXDNIvi0ShG8U4FDmWLr0eApdQSLWm7cvdVA4W4lspewQWKnnopY29PFvsoeDyIQ3ZuQdiM1OfNCjQ7npV0MAxBRxgCi+IIXz33laxJrsP70QU9fsIsghjjgkJoQTZxLG61swUum/VI7u68HI0UB90KhydYNiRBmusnXRpQ= 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=209.85.160.70 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-oa1-f70.google.com with SMTP id 586e51a60fabf-42306db7f0dso1638878fac.1 for ; Fri, 17 Apr 2026 09:21:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776442895; x=1777047695; 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=4P3ej/0LfshnLU6QEkkh/1XNrRFZxVRy7nUop8kNrw0=; b=d/zKhL30ge1lIOk+biNOK8khqDepmf4IlMntbadnBLulZ3jAuCL4DbGIvbOWzpqQZm ECND20f+npLmHCR4Sg0fShwzl/aJDziOtLxmxV1Ap2SxX5FRlZ124rY5XquX3KWuqS3G LghiCqg785S+6MTNysVVnh9P/FoVYK4AGPM7pSXSMJrbARKuNR4/9XV0/n+AInPDs8v0 6O9a3PdmYjY9HrZ9Une/1q6Sm1bPZNWFpa7dr8SKV8zHPVWQN5HViGVVs8uOptxD14hY b8iWkdniSAeREDfH10LaHBfeu+1bhyX0AIxERSNne3E5tSp0hwkwEdjljQVwpU/KC0MZ 8W7w== X-Gm-Message-State: AOJu0YzxinZsgTXgfa8szA9onpqJd+m9ykvKWDBGquoKTtXzlas/5rqk 1ezwLZvDtKp5p7quHl6hG/FP0t5NCcRIkzD0p4BmaVXclJP8sebfTpfj0euNsgOS2vOVDeAX9bD gUUjuaDTlc4gKD6gGfUVy+k2mQf2H2HAH8EWSCn5YzbRG+M3kyz+Hib9REs8= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:200d:b0:67c:15b2:476d with SMTP id 006d021491bc7-69462f0e8cfmr1796530eaf.42.1776442895349; Fri, 17 Apr 2026 09:21:35 -0700 (PDT) Date: Fri, 17 Apr 2026 09:21:35 -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: <69e25e0f.050a0220.1de265.002d.GAE@google.com> Subject: Forwarded: Re: [syzbot] WARNING in rgblk_free 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 Author: tristmd@gmail.com #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >>From 4649cf253677e3ba7f3266916dfe24fecc0e3b69 Mon Sep 17 00:00:00 2001 From: Tristan Madani Date: Fri, 17 Apr 2026 16:15:19 +0000 Subject: [PATCH] gfs2: replace WARN_ON_ONCE with error message in rgblk_free() rgblk_free() uses WARN_ON_ONCE when gfs2_rbm_from_block() fails, which triggers a kernel WARNING on corrupted filesystems. Replace with fs_warn() to log the error without triggering a WARNING splat. Reported-by: syzbot+3e2c95229d1ab81a0bfd@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=3e2c95229d1ab81a0bfd 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 5988a16..a7c1965 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -2264,8 +2264,11 @@ 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