From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793618573; b=Em7c4dAladHUDT8KyxvhSX5xBircCP2sPxITlAXFedGGMN6l1JHCjFG0/ikJBcetvyLH vjeTk8I7hJebSrQ60vYpMJ3dK0GTOocvT74ik5ze/xeKH6PMvcY2P2feoJD6F8QRSHj4u 8KTTLOvJxHc1fbJHeL34p32Lg/SyjtCikXt1JB0EapJCgKlU474U6PsfooJSRACrv1TPF zZFNf3xGbvAg/MxwNukfdQeJafR2rxJ8IQzKG4qUj/GPlGmdr46l9SvCW5YPZzVFHqaiX bcatzHZCEjcHqNpSc2QX8YX858CxXDKHfM0oyG5+H2PdLhrIfXwIVfZsEBSnLyIOqUQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793618573; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=sd8pgkezC7ZcVn7+Uxgt0n5visYzPF1xvceS5f2PYO4=; b=bfu+Djgn2uJYN2La/XJ4nXswO+Zo89Oy/oJBMIIcLsWQwR20fRLLA1ZyD0hXAC4IN+FI vJE+55CNiod9BdvWJrD8Ye69o6gGpnj4ja7o5pPa+pJ+tjBQPi8yzT6MlauooLgAVoDzl a2tJVC9c5yg5BSZJatLL5N+m4OMOiwKBWXmjXq1nf6/PTd9u70lYroFYWe2Cq7Z7cyecE M5ipq8Ttpd7bDihGlCeRRjae8w6kPuaT0cmZdlzQsyisVzGNMM/S+qColyyjuSSZHv91X BnqqPpni3Nt0wk/ShPX4GdGfOXw5IaJBUg/BAzDqvPBqjOwgOpgfE9u/HcmJz9mnSwA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=pGKosGxF; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1DFB5606A8B3; Mon, 2 Nov 2026 11:22:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=pGKosGxF Received: by smtp.kernel.org (Postfix) with ESMTPSA id 783D71F00A1A; Mon, 2 Nov 2026 11:22:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793618572; bh=sd8pgkezC7ZcVn7+Uxgt0n5visYzPF1xvceS5f2PYO4=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=pGKosGxFrudNlcbW59RMsHe6tuTJpr4YZQiYTx5tweorjqyly2p/ZHW2n6kn+6tZ9 7kOqYfdue7c5u1AI1ZTIUdDzm8Cw6QO4zpQfTBjwlPLNeBFC07SGTCC5A/M+ae5zbG EDZ0RMLAbxmgD7cepYd9aer/eI6+pzaYoGgbZSwc= Date: Mon, 2 Nov 2026 12:22:45 +0100 From: Greg KH To: Ulf Markwardt Cc: stable@vger.kernel.org, regressions@lists.linux.dev Subject: Re: Infiniband PKEY Regression 6.12.115 Message-ID: <2026110214-property-unaligned-70bb@gregkh> References: X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Nov 02, 2026 at 07:38:39AM +0100, Ulf Markwardt wrote: > Dear Linux Developers, > we are running 6.12.x kernels with AlmaLinux 9.8 as OS on some HPC clusters. > From 6.12.114 to 6.12.115 we experience this regression on a certain host type: > > The InfiniBand P_Key tables do not get populated by the SM (opensm) when > booting kernel 6.12.115. All IPoIB child interfaces that require a specific P_Key > (e.g. 0x8001, 0x8002) fail with "P_Key not found". With kernel 6.12.114 the > P_Key tables get populated and all IPoIB subinterfaces come up at boot time. Any chance you can run 'git bisect' to find the offending commit? And always cc: the relevant subsystem developers to please. thanks, greg k-h