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 B711D2178FE; Wed, 23 Oct 2024 14:33:19 +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=1729693999; cv=none; b=cqixATTfvXROVl9MA7hEYvPSOsdOgfAmiSF3ODJ/n6X5LHARiJFcY+ts1NR8KVSaXRVomWw0LCqavkWIj0BRpm0d+or/mbyEGLiKvc9NlY9M/yoUpcWU2rKa63dvNcVj/LqnuIaSWcSOLFPWKlJ/SH55MOuZdYX7kCsk6LJUFYY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729693999; c=relaxed/simple; bh=8x4gbOVWk2fS1hTMUlUz7MC4z/meP6ZjHOlPHNJjRgE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=US89GGzfWBRiCIyU7YCHzysCT61gPghex8ZrLIpguN6rQTDr6p8jXhtJ3F0zT6bfHxjhI4NJ8ZRZqNqoqaG9Y56/VUf1soLm183tKNRe3HTZ/0zBYC72dxHTMtYod+GVIapjLGKAWiQjXFDvpCV/kfj2JG+AEsp7hKdxRhm+CmM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Jiyc8PLU; 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="Jiyc8PLU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC531C4CEC6; Wed, 23 Oct 2024 14:33:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729693999; bh=8x4gbOVWk2fS1hTMUlUz7MC4z/meP6ZjHOlPHNJjRgE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jiyc8PLUbGjx57lukD/YERhjbg1R6SiTOdR/9O3pI4EF8OsF2fYwi2CiODSxdnDxH QJ7in2WJQ+kQIrotpRj6eBV0Zudinx2EsoeEtDADqPJ2J6a2LJiplmDpubhpeyt65t e5tTsiVMTxeIBsd2nsSqa05+/lsYSnwEXM3VWIO5qwBQ5cCmnPgyow5DFwOAfYyXAg tDEHwIhzuNw7TRi/hdRGX2/gLY7NggpttLaRW80k6PjhHvxUYVBszVWM/a5Rkz6tWt jW9u9fzlCU8K/J9Ozk7bweklQlvIkeKStjmwZk/i25za0jPY0AgRwmkOSm37mFwku4 nKOZRQny0MEoA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Michael Ellerman , 2639161967 <2639161967@qq.com>, Sasha Levin , chentao@kylinos.cn, linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 5.4 5/5] powerpc/powernv: Free name on error in opal_event_init() Date: Wed, 23 Oct 2024 10:33:08 -0400 Message-ID: <20241023143310.2982725-5-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241023143310.2982725-1-sashal@kernel.org> References: <20241023143310.2982725-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.284 Content-Transfer-Encoding: 8bit From: Michael Ellerman [ Upstream commit cf8989d20d64ad702a6210c11a0347ebf3852aa7 ] In opal_event_init() if request_irq() fails name is not freed, leading to a memory leak. The code only runs at boot time, there's no way for a user to trigger it, so there's no security impact. Fix the leak by freeing name in the error path. Reported-by: 2639161967 <2639161967@qq.com> Closes: https://lore.kernel.org/linuxppc-dev/87wmjp3wig.fsf@mail.lhotse Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20240920093520.67997-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin --- arch/powerpc/platforms/powernv/opal-irqchip.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c index dcec0f760c8f8..522bda391179a 100644 --- a/arch/powerpc/platforms/powernv/opal-irqchip.c +++ b/arch/powerpc/platforms/powernv/opal-irqchip.c @@ -285,6 +285,7 @@ int __init opal_event_init(void) name, NULL); if (rc) { pr_warn("Error %d requesting OPAL irq %d\n", rc, (int)r->start); + kfree(name); continue; } } -- 2.43.0