From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 01 Dec 2023 16:12:35 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1r95Bz-00GAn0-0t for lore@lore.pengutronix.de; Fri, 01 Dec 2023 16:12:35 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1r95Bz-0005ab-By for lore@pengutronix.de; Fri, 01 Dec 2023 16:12:35 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7kjphg2bbUTpBS8mHZZ+zRFb0JNE1d8z4QSuayYZ6C0=; b=UcQa9CDBIh3hUH 3cwSdgH48MdPmUOvJ8ENUeD10PL8yV5jTNesB/sUMCde7djzhsA/9aKak3Pyg2A60dVvYXXSG6JF0 QuNC4iRuxGL9MiLvbzWbuZWtMqiKCAXbdHEKDfWhPb5fuulv3R5nbFAywUR8oR9X+TiOmKDFeQ0I8 GWMrNGHcOjo7cWDXYF6AEGCPy1O6pRmNJ2MEaa2/8DUGW9LgVKEH5UN+6I7EbiJXCMz1qZwUCn6hH K4b8Z5sEueEmNdh1iZsJX2sIZ3lerfgKqe5Hegj3H5mGspEMaULfr+Fo/TIhC/qEK9NCFzjo+Q9V0 pKlMaiAds7V2EB/5oHXw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r95AW-00E0VR-0P; Fri, 01 Dec 2023 15:11:04 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r95AS-00E0U7-21 for barebox@lists.infradead.org; Fri, 01 Dec 2023 15:11:01 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1r95AG-0005BT-Lt; Fri, 01 Dec 2023 16:10:48 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1r95AG-00Csnv-9F; Fri, 01 Dec 2023 16:10:48 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1r95AG-006upJ-0j; Fri, 01 Dec 2023 16:10:48 +0100 From: Sascha Hauer To: Barebox List Date: Fri, 1 Dec 2023 16:10:43 +0100 Message-Id: <20231201151044.1648393-2-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231201151044.1648393-1-s.hauer@pengutronix.de> References: <20231201151044.1648393-1-s.hauer@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231201_071100_670224_F64EE11E X-CRM114-Status: UNSURE ( 9.52 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexander Shiyan Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 2/3] ARM64: mmu: panic when out of PTEs X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) When running out of PTEs panic with an appropriate message instead of continuing with NULL pointers. Signed-off-by: Sascha Hauer --- arch/arm/cpu/mmu_64.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/cpu/mmu_64.c b/arch/arm/cpu/mmu_64.c index d62527809e..12c4dc90b3 100644 --- a/arch/arm/cpu/mmu_64.c +++ b/arch/arm/cpu/mmu_64.c @@ -99,6 +99,9 @@ static void split_block(uint64_t *pte, int level) levelshift = level2shift(level + 1); new_table = alloc_pte(); + if (!new_table) + panic("Unable to allocate PTE\n"); + for (i = 0; i < MAX_PTE_ENTRIES; i++) { new_table[i] = old_pte | (i << levelshift); -- 2.39.2