From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F67763B9 for ; Thu, 6 Nov 2025 12:29:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762432167; cv=none; b=Ttca8pxYJu46kRpss+3/Si6xpv7CxBxt3PuN1M8JRXOYtNi6SNE1bIKHUxjo9Tb0BuXDMeo5y4YUf79z9yQbd4Sdpk0NAxkevSCdsp50hbXFyRbadQV2QVvp4QiuXZ+cKT5NiqLZpM6trAlzkWpAZ7EebO11L8LNmBYBAaCTtvo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762432167; c=relaxed/simple; bh=vCCR4dzUaQzsdGNkIQM2UKH0xt7so0+8qrK+8YUzLq8=; h=Message-ID:Subject:From:To:Date:In-Reply-To:References: Content-Type:MIME-Version; b=jXwBOkt3CMzi2VuClU/twMduGuk5HMMSPyfY8fBBKK2V1GckTORhbidvlB0+jm/V0N2xWZbKqh+AtitrjP51uWnKzIIL8jXK+JiTZZYbE8v3O8NckDi9iU/T/8NXOsrLDwBoqmjhnLBEOSB+k2F/caiPFLVj0zKv13ZIKfKxs44= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pzGfdv+0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="pzGfdv+0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 931F5C4CEFB; Thu, 6 Nov 2025 12:29:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762432167; bh=vCCR4dzUaQzsdGNkIQM2UKH0xt7so0+8qrK+8YUzLq8=; h=Subject:From:To:Date:In-Reply-To:References:From; b=pzGfdv+0Q3waPNE/QPKVlZJxFKkxAuun29S6kjeLjkGPgTqtrkoz5AuSFye7KHxri kSE4BfBcjoh6jgvAX/vqJqxjj9zLry46ZAKqWqxPmQbYoR+c34d+HWrzVO7/wUevRy 8DJWyqyye5QT3vaCbvt6quFW3K9phwmZ9vtXn9xQNr1mLI/mcWDVHcTnl/6H5S8BJE vxehhnUnoVL8g3u5WLaYPWSRY/xCZIHqK+UBo6Ts4CHRCh4dQkHwLY/ioPx8P0VFTx 5E+Us1KeoNC8fyHyHkK2aCTaUP02o3J09v3xBkcYBJR8U3zDB1uRJBhxMO5puuwx3f eGgFBds4ULaWA== Message-ID: Subject: Re: Compile Error fs/nfsd/nfs4state.o - clamp() low limit slotsize greater than high limit total_avail/scale_factor From: Jeff Layton To: Mike-SPC via Bugspray Bot , cel@kernel.org, neilb@ownmail.net, trondmy@kernel.org, linux-nfs@vger.kernel.org, anna@kernel.org, neilb@brown.name Date: Thu, 06 Nov 2025 07:29:25 -0500 In-Reply-To: <20251106-b220745c6-0a65ef0b5697@bugzilla.kernel.org> References: <20251106-b220745c6-0a65ef0b5697@bugzilla.kernel.org> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 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writes via Kernel.org Bugzilla: >=20 > (In reply to Bugspray Bot from comment #5) > > Chuck Lever replies to comment #4: > >=20 > > On 11/5/25 7:25 AM, Mike-SPC via Bugspray Bot wrote: > > > Mike-SPC writes via Kernel.org Bugzilla: > > >=20 > > > > Have you found a 6.1.y kernel for which the build doesn't fail? > > >=20 > > > Yes. Compiling Version 6.1.155 works without problems. > > > Versions >=3D 6.1.156 aren't. > >=20 > > My analysis yesterday suggests that, because the nfs4state.c code hasn'= t > > changed, it's probably something elsewhere that introduced this problem= . > > As we can't reproduce the issue, can you use "git bisect" between > > v6.1.155 and v6.1.156 to find the culprit commit? > >=20 > > (via https://msgid.link/ab235dbe-7949-4208-a21a-2cdd50347152@kernel.org= ) >=20 >=20 > Yes, your analysis is right (thanks for it). > After some investigation, the issue appears to be caused by changes intro= duced in > include/linux/minmax.h. >=20 > I verified this by replacing minmax.h in 6.1.156 with the version from 6.= 1.155, > and the kernel then compiles successfully. >=20 > The relevant section in the 6.1.156 changelog (https://cdn.kernel.org/pub= /linux/kernel/v6.x/ChangeLog-6.1.156) shows several modifications to minmax= .h (notably around __clamp_once() and the use of > BUILD_BUG_ON_MSG(statically_true(ulo > uhi), ...)), which seem to trigger= a compile-time assertion when building NFSD. >=20 > Replacing the updated header with the previous one resolves the issue, so= this appears > to be a regression introduced by the new clamp() logic. >=20 > Could you please advise who is the right person or mailing list to report= this issue to > (minmax.h maintainers, kernel core, or stable tree)? >=20 I'd let all 3 know, and I'd include the author of the patches that you suspect are the problem. They'll probably want to revise the one that's a problem. Cheers, --=20 Jeff Layton