From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 ED3D63B4E9B; Tue, 21 Jul 2026 20:53:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784667185; cv=none; b=mcnQAVl6ClRweT5ADlJYUT3TPOfgHmcGl5rzo2vKvqXtRjeInhYJPxw50wataJQxd4UmjonwiY1mnpHuSQMVtF42P7x5TIqYaPY4PPiVjoQnJnA+wQF6EhH1tsCYEP/Il6+PJPWMIT9L1pvH4rg7c7WEgFDaR9IB6xPVEGRTlic= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784667185; c=relaxed/simple; bh=Y9q9TLpgo44fNsxMKZ42gZstTWqle0AT+CazzgHamEM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kFryWrdkCYOw2rPgGjUPUwxlWPeHlQH/A9vnYwQA7v6T++kPUU01fHI0PawE3geZkBnQEJJ+Yjtlyo0zPLesUYOk2995y4eEjD9H80eBiNRpIsaA0KmV+ZA59BL5HJpwZTjZqJZ+ROXyxNudwoF/4X2bRzubHbFz2OQ9XrkN80A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Sln367uc; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Sln367uc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28CCF1F000E9; Tue, 21 Jul 2026 20:53:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784667183; bh=NH5hKyoFyubvVC3BgT87/d+0UtznOcW+/w8cjwiLtKQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Sln367ucpdZkN/5Rn0u/tkGpC5HuXUQ6Gp5wqKwnvszhe5N+MF0Q0NMCpOWc0Nimn FGScYfS6ge1uR8kz+j481n8ZIBgJMm7kv2wl7BwDwANHQ3OMad5H6wGMIChvH9mb9R xTKNkn7SN17OgunbSe9Q6GHWaLE9D8WsKh2W4qA0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Abdun Nihaal , Alison Schofield Subject: [PATCH 6.6 0963/1266] nvdimm/btt: Free arena sub-allocations on discover_arenas() error path Date: Tue, 21 Jul 2026 17:23:20 +0200 Message-ID: <20260721152503.380059773@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152441.786066624@linuxfoundation.org> References: <20260721152441.786066624@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Abdun Nihaal commit 13fe4cd9ddd0aacb7777812328be525a11ea3fea upstream. Memory allocated by btt_freelist_init(), btt_rtt_init(), and btt_maplocks_init() is not freed on some discover_arenas() error paths. This leaks memory when arena discovery fails. Add the missing kfree() calls to release the allocations before returning an error. [ as: commit message and log edits ] Fixes: 5212e11fde4d ("nd_btt: atomic sector updates") Cc: stable@vger.kernel.org Signed-off-by: Abdun Nihaal Reviewed-by: Alison Schofield Link: https://patch.msgid.link/20260519-nvdimmleaks-v1-1-592300fb7a43@cse.iitm.ac.in Signed-off-by: Alison Schofield Signed-off-by: Greg Kroah-Hartman --- drivers/nvdimm/btt.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -923,6 +923,9 @@ static int discover_arenas(struct btt *b return ret; out: + kfree(arena->freelist); + kfree(arena->rtt); + kfree(arena->map_locks); kfree(arena); free_arenas(btt); out_super: