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 3C5042FE066 for ; Sun, 1 Mar 2026 01:52:43 +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=1772329963; cv=none; b=qorQdnCgtu0ZGUH/rL+/kqOCHDto1bsvWlBI9DSlupbLneQjLj6nEpBYKRCs/AhOQlSVKggLPR7dg5QKFuaWwG/k0uUiGpATANJQsUDbwWoJt7yMMklXmbkVNoyuqXELDJCwQZcU9UFdTM5TZJmvenUWgNiDs0Y5PYP9fELpI2A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772329963; c=relaxed/simple; bh=LdkQyWhY8/sOxq6lPbH2M0bRkx10EZVujj0IB3ReurY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=CIijS1JqvQRq3CZqKjpGBC5iyRlJnlAM9iF3jIF+fA4FfpdqKBVp3vbLu6B5+4PlxgbVrM1AX+Tfc3+JRehAMeDcgwvTyXd8frshGwkK8Tge013E7uFfcodhorOaofRKZ9yclxR7QrH8e5NesxrAdZlcCksYOvwxQwUkbrXMcwM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uJtg1itV; 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="uJtg1itV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 884FCC19421; Sun, 1 Mar 2026 01:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772329963; bh=LdkQyWhY8/sOxq6lPbH2M0bRkx10EZVujj0IB3ReurY=; h=From:To:Cc:Subject:Date:From; b=uJtg1itVxg2wNOwyAe7ELdugfJrJO128UWpinichCumeewvMaR983YarGN64n1bR1 lQ2NICDs4PHriDLmCez7474TXHdgvWQj6JykpFkRVTg6JbG1N+oWSqaszEdQ8g+tc1 4ZQswflGh0L3hE3FCZ2OXHKMic/8XbXOF1GaLcEe2gMdwR9uxmM+3hGqO7y8oV4m/q lg+48Aq0DhzXHFLn3UjO6RyFoPocuG3S+46Ni5Iix6W9QP2wjjQDXMmUrZOJv7AKgq BcuqiQy5UHBY8gC2+xjDKn4Jrg0U6LO0cUrIqE3RdC9rRJuW7jBfQXLnrn/b1MuVFG 0MLoARNY+k/5Q== From: Sasha Levin To: stable@vger.kernel.org, lgs201920130244@gmail.com Cc: Christophe Leroy , Madhavan Srinivasan , linuxppc-dev@lists.ozlabs.org Subject: FAILED: Patch "powerpc/smp: Add check for kcalloc() failure in parse_thread_groups()" failed to apply to 5.15-stable tree Date: Sat, 28 Feb 2026 20:52:41 -0500 Message-ID: <20260301015241.1719268-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 33c1c6d8a28a2761ac74b0380b2563cf546c2a3a Mon Sep 17 00:00:00 2001 From: Guangshuo Li Date: Tue, 23 Sep 2025 21:32:35 +0800 Subject: [PATCH] powerpc/smp: Add check for kcalloc() failure in parse_thread_groups() As kcalloc() may fail, check its return value to avoid a NULL pointer dereference when passing it to of_property_read_u32_array(). Fixes: 790a1662d3a26 ("powerpc/smp: Parse ibm,thread-groups with multiple properties") Cc: stable@vger.kernel.org Reviewed-by: Christophe Leroy Signed-off-by: Guangshuo Li Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250923133235.1862108-1-lgs201920130244@gmail.com --- arch/powerpc/kernel/smp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 292fee8809bc8..cad3358fa4c35 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -822,6 +822,8 @@ static int parse_thread_groups(struct device_node *dn, count = of_property_count_u32_elems(dn, "ibm,thread-groups"); thread_group_array = kcalloc(count, sizeof(u32), GFP_KERNEL); + if (!thread_group_array) + return -ENOMEM; ret = of_property_read_u32_array(dn, "ibm,thread-groups", thread_group_array, count); if (ret) -- 2.51.0