From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6A895FC08 for ; Mon, 15 May 2023 17:42:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C05FBC4339B; Mon, 15 May 2023 17:42:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684172525; bh=kUrKhhjbrNgLmWrEkrLqnjT5n441ieTdGqorhDsJrRk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q6dliw0Ov+p+gdmAe7xFXvmR2c73V++jEm+AIjkHxdum77F30UWZy4Q/Waf5fS6d5 yuN0yyuFRhebOKgPKs8/972pghMRLjDkPf52iQbc4n3TL9Mx6zJtXE77VnlQ7Igru6 lR4Wdw0m+yNzhFqws9PTxaOfaWmzDsEBurEBvjI4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Johannes Berg , Gregory Greenman , Sasha Levin Subject: [PATCH 5.10 181/381] wifi: iwlwifi: fw: fix memory leak in debugfs Date: Mon, 15 May 2023 18:27:12 +0200 Message-Id: <20230515161744.998557331@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161736.775969473@linuxfoundation.org> References: <20230515161736.775969473@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Johannes Berg [ Upstream commit 3d90d2f4a018fe8cfd65068bc6350b6222be4852 ] Fix a memory leak that occurs when reading the fw_info file all the way, since we return NULL indicating no more data, but don't free the status tracking object. Fixes: 36dfe9ac6e8b ("iwlwifi: dump api version in yaml format") Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230418122405.239e501b3b8d.I4268f87809ef91209cbcd748eee0863195e70fa2@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/intel/iwlwifi/fw/debugfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c index 267ad4eddb5c0..24d6ed3513ce5 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c @@ -344,8 +344,10 @@ static void *iwl_dbgfs_fw_info_seq_next(struct seq_file *seq, const struct iwl_fw *fw = priv->fwrt->fw; *pos = ++state->pos; - if (*pos >= fw->ucode_capa.n_cmd_versions) + if (*pos >= fw->ucode_capa.n_cmd_versions) { + kfree(state); return NULL; + } return state; } -- 2.39.2