From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F1A3422A7E9 for ; Wed, 4 Mar 2026 10:06:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772618769; cv=none; b=D8XXia0oqtKhCGi47jxYSjdzzOnxXYhY6n/ebJKGuqAJen2KNDd2PSXKxhwAHgQzxlWaisN0wzdaIAW8ICOnBl2QnbSGKGGkeU3uvQPpcrw6Q9MnXrZo7rLJh9bM2y9jpo6aQBVAG2PTwvipskBhDcgsokoJrAs0EA6Y0ZSzUBc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772618769; c=relaxed/simple; bh=CBiwXMAd3YWbKWaXPfqC7/kVDJWdCo99WBgOyx00/mI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=sWRzudPpGWTzaJXQs2m0SeMXlTmMoM3b9CPu4ZCyvECEQXp/SfbTPFPPHfh17thAZldqA3+0hFMLVzY5CiULd/bGD+paDs1ulI2ri6iZKzWoLrCpetgt3ElLqG5QSwnV0mcgYhBmaBW44ogu6o8e0LpwhOzbuiNrdysxB2wleWs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=QTDEjnrm; arc=none smtp.client-ip=209.85.214.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="QTDEjnrm" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-2ab46931cf1so49246425ad.0 for ; Wed, 04 Mar 2026 02:06:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1772618767; x=1773223567; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=bsGz9NobNNMerVOOjKKJ0LgJD2SxFYXhHAVBSa0LnTg=; b=QTDEjnrmx1EpkCew2M1IkDfg9dqDXur8LvIb25+1MJ9Qz+wNmhz7hjvnUnWDEgWJBg 197Dew8WIYqBaVQyeVsl7jda4TsFVvi5SX/xJmiHDLgvVeuH+Q67KS7LdgzmnfRGKdFo 7VvPBEvuhzjSQLd4WGdVTV8B7UUnWIesMoNis4ZlmRSlwqU3qRQLv4GCyeY/W+R/vkDR OZspsBgFuN8v62VfSiD762tWhUSh6Z2Ud2iQw0Qp0/8Vve8F7GXSp6oRb3VLANRlW0X5 uqx0JqMj/4R/aautJ3RRrc29EUbWFWXHseCpiloT58yj1X8nh+KBu96VTXUlTHA87hK/ R+FQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772618767; x=1773223567; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=bsGz9NobNNMerVOOjKKJ0LgJD2SxFYXhHAVBSa0LnTg=; b=NrQAg60ICuWSs6cVb28WTCM6zjMSlNsNq0ssIf0CMhjkBNFq2UJUUUQtLXebIoQeJa 0ZrNBaxfwR+ZorL1x+uoKmKcknXhXvutpUUWkvXWPVeL4taEeui11GrfJrcQA4NY2uOv YBTcCdysHVwts2dTVXnAzWRXXSRqPPyI0B8fwXcIliiS1z9VW9cjaf23rzcwMio5nEQK H1kpmiKjPYkUAg6zeAmQ9o3d7tli1SdXo4UzLbhHAuOTXYdOnXPZbpqE+T0ofLihguXT 3cGWCDanr3uCV0W7+VAISRqY3quVvSVgI64AOyb0AGXYYNpW/JtxcKLfp0PF4yCgGNGA fYJw== X-Forwarded-Encrypted: i=1; AJvYcCVUgknrfcQpPF2AYKSNhahfBMlo2KnZPpr+JxA2LQbZiCT/WDDmM/+2m4H86y2SNbg5BtJB9SThHig/e8Yz@lists.linux.dev X-Gm-Message-State: AOJu0YyyoBnvvZEYtfB1t3YCsqaRU75AJ2uCNdoH0uttfmmfmKQ31efN Ky1IVGHvx5FCBQpGwWqRzxxBPnkP9zQ+Chs+VGoKv1j3xOGvy+7+W4q3 X-Gm-Gg: ATEYQzz11JM1SrSkS5cnn4JVsthTnvmmn+p8vawkVnSUYU7QIaPrEdSchSmm/dLZ9ke 9ZNiJYbpjdo52KR6BXpaZPYYHUHRp+eveYuBhw10dlHxKX0nc+JvGFJW3VcKdeBq74ajcXfvyOp YQGO2LC3M09bxwubcI4wCCarIUik1EyJCLjKmDuwGIu9PRdaOooCWwZpkOBBdBlQIGXFV5SLpTo 5iAOE3YM+x2bpsWuLIl69jEbHUaEHKcJxVtdzBdztBTX5B1u61RSAYcWrH/xhMVXkRp/CsZMfCL eTucAXsMXxyoTjhNh4HLqJXvsK2rqXE/c2CtXj8Fz4CsMzyKHZO2yY+bGzIkQ/Y/uZSNJgXhWrT wrP8IeTNVFNko+Db/RNoe5/HZIyXQua4uu+sRu8OF/HkON20SETRG5PADuSGpESwehBybIpR/Vb zHe3eHP3O8pH1ITsGBYymB X-Received: by 2002:a17:902:fc87:b0:2ad:da28:8c7a with SMTP id d9443c01a7336-2ae6ae0bfefmr15253245ad.8.1772618767233; Wed, 04 Mar 2026 02:06:07 -0800 (PST) Received: from rockpi-5b ([45.112.0.200]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2adfb5b48f4sm191220555ad.13.2026.03.04.02.06.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2026 02:06:06 -0800 (PST) From: Anand Moon To: Neil Armstrong , Mauro Carvalho Chehab , Greg Kroah-Hartman , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Maxime Jourdan , Hans Verkuil , linux-media@vger.kernel.org (open list:MESON VIDEO DECODER DRIVER FOR AMLOGIC SOCS), linux-amlogic@lists.infradead.org (open list:MESON VIDEO DECODER DRIVER FOR AMLOGIC SOCS), linux-staging@lists.linux.dev (open list:STAGING SUBSYSTEM), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Amlogic Meson SoC support), linux-kernel@vger.kernel.org (open list) Cc: Anand Moon Subject: [PATCH v1] media: meson: vdec: Fix memory leak in error path of vdec_open Date: Wed, 4 Mar 2026 15:35:53 +0530 Message-ID: <20260304100557.126488-1-linux.amoon@gmail.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit If vdec_init_ctrls(sess) fails, or any subsequent initialization step during vdec_open fails, the control handler allocated for the session is not released. This causes a memory leak of the v4l2_ctrl_handler and its associated control objects. Add a call to v4l2_ctrl_handler_free() in the err_m2m_release error path to ensure resources are properly reclaimed. unreferenced object 0xffff0000205d6878 (size 8): comm "v4l_id", pid 5289, jiffies 4294938580 hex dump (first 8 bytes): 40 d2 49 18 00 00 ff ff @.I..... backtrace (crc d3204599): kmemleak_alloc+0xc8/0xf0 __kvmalloc_node_noprof+0x60c/0x850 v4l2_ctrl_handler_init_class+0x1b4/0x2e8 [videodev] vdec_open+0x1f4/0x788 [meson_vdec] v4l2_open+0x144/0x460 [videodev] chrdev_open+0x1ac/0x500 do_dentry_open+0x3f0/0xfe8 vfs_open+0x68/0x320 do_open+0x2d8/0x9a8 path_openat+0x1d0/0x4f0 do_filp_open+0x190/0x380 do_sys_openat2+0xf8/0x1b0 __arm64_sys_openat+0x13c/0x1e8 invoke_syscall+0xdc/0x268 el0_svc_common.constprop.0+0x178/0x258 do_el0_svc+0x4c/0x70 Fixes: 3e7f51bd9607 ("media: meson: add v4l2 m2m video decoder driver") Signed-off-by: Anand Moon --- drivers/staging/media/meson/vdec/vdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c index 4b77ec1af5a7..a5ab0c2390f5 100644 --- a/drivers/staging/media/meson/vdec/vdec.c +++ b/drivers/staging/media/meson/vdec/vdec.c @@ -914,6 +914,7 @@ static int vdec_open(struct file *file) return 0; err_m2m_release: + v4l2_ctrl_handler_free(&sess->ctrl_handler); v4l2_m2m_release(sess->m2m_dev); err_free_sess: kfree(sess); @@ -926,6 +927,7 @@ static int vdec_close(struct file *file) v4l2_m2m_ctx_release(sess->m2m_ctx); v4l2_m2m_release(sess->m2m_dev); + v4l2_ctrl_handler_free(&sess->ctrl_handler); v4l2_fh_del(&sess->fh, file); v4l2_fh_exit(&sess->fh); base-commit: 0031c06807cfa8aa51a759ff8aa09e1aa48149af -- 2.50.1