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[34.82.187.25]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a4ce1c9045sm588743a91.12.2026.09.29.20.16.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Sep 2026 20:16:06 -0700 (PDT) From: Hui Peng To: Anders Larsen Cc: Matthias Goergens , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Hui Peng Subject: [PATCH v4 0/6] fs/qnx6: fix buffer head leaks, double free, and inode validation Date: Wed, 30 Sep 2026 03:15:58 +0000 Message-ID: <20260930031604.70544-1-benquike@gmail.com> X-Mailer: git-send-email 2.56.0.rc1.315.gc6ed9934b7-goog In-Reply-To: <20260924073920.2782917-1-benquike@gmail.com> References: <20260924073920.2782917-1-benquike@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series fixes buffer head leaks, double free issues, and inode/ superblock validation defects in fs/qnx6/: 1. Validate di_filelevels against QNX6_PTR_MAX_LEVELS (5) in qnx6_iget() before accessing level pointers. 2. Release buffer_head on error path in qnx6_block_map(). 3. Avoid double brelse() and fix sbi->sb_buf leak on error path in qnx6_fill_super(). 4. Clear bh pointers when selecting active superblock in qnx6_mmi_fill_super(). 5. Abort mount on superblock magic mismatch when silent is set in qnx6_mmi_fill_super(). 6. Validate sb_blocksize before dividing in qnx6_mmi_fill_super(). Changes in v4: - Rebased cleanly and tested for applicability against tip of upstream mainline commit 62f4c998b297 ("Merge tag 'parisc-for-7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux"). - Updated 1/6 commit description to state QNX6_PTR_MAX_LEVELS is 5 (defined in include/linux/qnx6_fs.h), correcting the previous description text as pointed out by Matthias Goergens. - Temporarily dropped Tested-by / Reviewed-by tags from Matthias Goergens per his request until he re-tests v4 on mainline. Changes in v3: - Added Tested-by and Reviewed-by tags from Matthias Goergens across all 6 patches. - Updated Fixes tag in patch 1/6 to commit 5d026c724220 ("fs: initial qnx6fs addition"). Hui Peng (6): qnx6: validate di_filelevels in qnx6_iget() before accessing level... qnx6: release bh on error path in qnx6_block_map() qnx6: avoid double brelse() and fix sb_buf leak on error path in... qnx6: release bh2/bh1 on active superblock selection in... qnx6: abort mount on superblock magic mismatch when silent is set... qnx6: validate sb_blocksize before dividing in qnx6_mmi_fill_super() fs/qnx6/inode.c | 17 ++++++++++++++--- fs/qnx6/super_mmi.c | 9 ++++++--- 2 files changed, 20 insertions(+), 6 deletions(-)