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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Sebastian Reichel , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org Subject: [PATCH] net: dsa: add return value check of genphy_read_status() Date: Thu, 14 Mar 2024 09:30:08 +0300 Message-Id: <20240314063008.11214-1-adiupina@astralinux.ru> X-Mailer: git-send-email 2.30.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DrWeb-SpamScore: -100 X-DrWeb-SpamState: legit X-DrWeb-SpamDetail: gggruggvucftvghtrhhoucdtuddrgedvfedrvdehuddgtddvucetufdoteggodetrfcurfhrohhfihhlvgemucfftfghgfeunecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkffoggfgsedtkeertdertddtnecuhfhrohhmpeetlhgvgigrnhgurhgrucffihhuphhinhgruceorgguihhuphhinhgrsegrshhtrhgrlhhinhhugidrrhhuqeenucggtffrrghtthgvrhhnpeduleetfeehffekueeuffektefgudfgffeutdefudfghedvieffheehleeuieehteenucffohhmrghinheplhhinhhugihtvghsthhinhhgrdhorhhgnecukfhppedutddrudejjedrvdefiedruddvleenucfrrghrrghmpehhvghloheprhgsthgrqdhmshhkqdhlthdqfedtvdeiledtrdgrshhtrhgrlhhinhhugidrrhhupdhinhgvthepuddtrddujeejrddvfeeirdduvdelmeehudejgeekpdhmrghilhhfrhhomheprgguihhuphhinhgrsegrshhtrhgrlhhinhhugidrrhhupdhnsggprhgtphhtthhopeduvddprhgtphhtthhopegrnhgurhgvfieslhhunhhnrdgthhdprhgtphhtthhopegrughiuhhpihhnrgesrghsthhrrghlihhnuhigrdhruhdprhgtphhtthhopehfrdhfrghinhgvlhhlihesghhmrghilhdrtghomhdprhgtphhtthhopeholhhtvggrnhhvsehgmhgrihhlrdgtohhmpdhrtghpthhtohepuggrvhgvmhesuggrvhgvmhhlohhfthdrnh gvthdprhgtphhtthhopegvughumhgriigvthesghhoohhglhgvrdgtohhmpdhrtghpthhtohepkhhusggrsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehprggsvghnihesrhgvughhrghtrdgtohhmpdhrtghpthhtohepshhrvgeskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepnhgvthguvghvsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhvtgdqphhrohhjvggttheslhhinhhugihtvghsthhinhhgrdhorhhg X-DrWeb-SpamVersion: Vade Retro 01.423.251#02 AS+AV+AP Profile: DRWEB; Bailout: 300 X-AntiVirus: Checked by Dr.Web [MailD: 11.1.19.2307031128, SE: 11.1.12.2210241838, Core engine: 7.00.62.01180, Virus records: 12498327, Updated: 2024-Mar-14 04:41:39 UTC] Need to check return value of genphy_read_status(), because higher in the call hierarchy is the dsa_register_switch() function, which is used in various drivers. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 33615367f378 ("net: dsa: Support internal phy on 'cpu' port") Signed-off-by: Alexandra Diupina --- net/dsa/port.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/dsa/port.c b/net/dsa/port.c index c42dac87671b..c411f30bb5f6 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -1765,7 +1765,9 @@ static int dsa_shared_port_fixed_link_register_of(struct dsa_port *dp) mode = PHY_INTERFACE_MODE_NA; phydev->interface = mode; - genphy_read_status(phydev); + err = genphy_read_status(phydev); + if (err) + return err; if (ds->ops->adjust_link) ds->ops->adjust_link(ds, port, phydev); -- 2.30.2