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[34.82.187.25]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cc7da126a49sm453319a12.7.2026.09.30.01.19.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Sep 2026 01:19:52 -0700 (PDT) From: Hui Peng To: Anders Larsen , Matthias Goergens Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Hui Peng Subject: [PATCH v5 5/6] qnx6: abort mount on superblock magic mismatch when silent is set in qnx6_mmi_fill_super() Date: Wed, 30 Sep 2026 08:19:46 +0000 Message-ID: <20260930081947.511613-6-benquike@gmail.com> X-Mailer: git-send-email 2.56.0.rc1.315.gc6ed9934b7-goog In-Reply-To: <20260930081947.511613-1-benquike@gmail.com> References: <20260930081947.511613-1-benquike@gmail.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In qnx6_mmi_fill_super(), when checking superblock magic for candidate superblocks, if the magic does not match QNX6_SUPER_MAGIC and silent is non-zero, the error message print is skipped but execution continues to subsequent checks, resulting in invalid superblock processing. Jump to error labels out1/out2 when superblock magic mismatch occurs, regardless of the silent parameter. Fixes: 3377755f1064 ("qnx6: add support for MMI (MME) media filesystem variant") Cc: stable@vger.kernel.org Reviewed-by: Matthias Goergens Tested-by: Matthias Goergens Assisted-by: LLM Signed-off-by: Hui Peng --- fs/qnx6/super_mmi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/qnx6/super_mmi.c b/fs/qnx6/super_mmi.c index 19f123d45678..2b6183d2c889 100644 --- a/fs/qnx6/super_mmi.c +++ b/fs/qnx6/super_mmi.c @@ -62,6 +62,7 @@ struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s, int silent) if (fs32_to_cpu(sbi, sb1->sb_magic) != QNX6_SUPER_MAGIC) { if (!silent) pr_err("wrong signature (magic) in superblock #1.\n"); + goto out1; } /* checksum check - start at byte 8 and end at byte 512 */ @@ -83,6 +84,7 @@ struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s, int silent) if (fs32_to_cpu(sbi, sb2->sb_magic) != QNX6_SUPER_MAGIC) { if (!silent) pr_err("wrong signature (magic) in superblock #2.\n"); + goto out2; } /* checksum check - start at byte 8 and end at byte 512 */ -- 2.47.3