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Thu, 14 May 2026 01:24:45 -0700 (PDT) From: Abdun Nihaal Subject: [PATCH 00/14] fbdev: fix various memory leaks Date: Thu, 14 May 2026 13:54:29 +0530 Message-Id: <20260514-fbdev-v1-0-b3a2474fa720@cse.iitm.ac.in> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAL2GBWoC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDU0Nj3bSklNQyXUvLRFPjlGQDc1OTNCWg2oKi1LTMCrA50bG1tQBF/GH kVwAAAA== To: Helge Deller , Javier Martinez Canillas , Thomas Zimmermann , Benjamin Herrenschmidt , Andrew Morton , Sebastian Siewior , Florian Tobias Schandinat , Ondrej Zary , Antonino Daplas , Paul Mundt , Krzysztof Helt , Tomi Valkeinen , Michal Januszewski , Heiko Schocher , Peter Jones Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Abdun Nihaal X-Mailer: b4 0.13.0 This patchset fixes some memory leak issues present in fbdev drivers. Since commit 56c134f7f1b5 ("fbdev: Track deferred-I/O pages in pageref struct") fb_deferred_io_init() allocated memory for pagerefs and returned an error code, but the existing drivers which call fb_deferred_io_init() were not updated to do cleanup. The first three commits address this. - fbdev: hecubafb: fix potential memory leak in hecubafb_probe() - fbdev: broadsheetfb: fix potential memory leak in broadsheetfb_probe() - fbdev: metronomefb: fix potential memory leak in metronomefb_probe() Probe functions that call fb_add_videomode() or fb_videomode_to_modelist() sometimes did not call fb_destry_modelist() to free the allocated memory. The following patches address this issue. - fbdev: radeon: fix potential memory leak in radeonfb_pci_register() - fbdev: carminefb: fix potential memory leak in alloc_carmine_fb() - fbdev: i740fb: fix potential memory leak in i740fb_probe() - fbdev: nvidia: fix potential memory leak in nvidiafb_probe() - fbdev: s3fb: fix potential memory leak in s3_pci_probe() - fbdev: tdfxfb: fix potential memory leak in tdfxfb_probe() - fbdev: tridentfb: fix potential memory leak in trident_pci_probe() - fbdev: uvesafb: fix potential memory leak in uvesafb_probe() Since commit 73ce73c30ba9 ("fbdev: Transfer video= option strings to caller; clarify ownership") the fb_get_options() function transfers ownership of the memory allocated for options, and so the caller is expected to free it. The following two patches address this issue. - fbdev: efifb: fix memory leak in efifb_probe() - fbdev: vesafb: fix memory leak in vesafb_probe() The following commit fixes a simple memory leak. - fbdev: sm501fb: fix potential memory leak in sm501fb_probe() All the patches were only compile tested. The issues were found using static analysis. Signed-off-by: Abdun Nihaal --- Abdun Nihaal (14): fbdev: hecubafb: fix potential memory leak in hecubafb_probe() fbdev: broadsheetfb: fix potential memory leak in broadsheetfb_probe() fbdev: metronomefb: fix potential memory leak in metronomefb_probe() fbdev: radeon: fix potential memory leak in radeonfb_pci_register() fbdev: carminefb: fix potential memory leak in alloc_carmine_fb() fbdev: i740fb: fix potential memory leak in i740fb_probe() fbdev: nvidia: fix potential memory leak in nvidiafb_probe() fbdev: s3fb: fix potential memory leak in s3_pci_probe() fbdev: tdfxfb: fix potential memory leak in tdfxfb_probe() fbdev: tridentfb: fix potential memory leak in trident_pci_probe() fbdev: uvesafb: fix potential memory leak in uvesafb_probe() fbdev: efifb: fix memory leak in efifb_probe() fbdev: vesafb: fix memory leak in vesafb_probe() fbdev: sm501fb: fix potential memory leak in sm501fb_probe() drivers/video/fbdev/aty/radeon_base.c | 1 + drivers/video/fbdev/broadsheetfb.c | 8 ++++++-- drivers/video/fbdev/carminefb.c | 1 + drivers/video/fbdev/efifb.c | 1 + drivers/video/fbdev/hecubafb.c | 6 +++++- drivers/video/fbdev/i740fb.c | 1 + drivers/video/fbdev/metronomefb.c | 8 ++++++-- drivers/video/fbdev/nvidia/nvidia.c | 1 + drivers/video/fbdev/s3fb.c | 1 + drivers/video/fbdev/sm501fb.c | 3 +++ drivers/video/fbdev/tdfxfb.c | 1 + drivers/video/fbdev/tridentfb.c | 1 + drivers/video/fbdev/uvesafb.c | 4 ++-- drivers/video/fbdev/vesafb.c | 1 + 14 files changed, 31 insertions(+), 7 deletions(-) --- base-commit: ba2e787b4814ebf9ab5f6a84181678b67eb3677b change-id: 20260513-fbdev-99a53dc0754f Best regards, -- Abdun Nihaal