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 A506E3AFD1A for ; Fri, 4 Sep 2026 18:45:02 +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=1788547503; cv=none; b=MXROW6K3WrS407bErwo0PfnmAbJczJyti0kPyjzMtk3j6AZ0VbsPBWvFuV4tHzq0rQs4kKiRneooSoOumJK/y8dj9hHojx1zPIszU6S7bAYidvn6BVDtpq5WzeSv/p7lDlO3keoDrrmQiZB1BZ5/wpahi+Qpy0Lo+DqPCzhKlj8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788547503; c=relaxed/simple; bh=ge2+9hNBQ4+EN32vzKc048EJMk+dj8nDdx0vDr9ky28=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Bt72h1fdpKwWVdRYYA88AYgdsPLDJswJmuOgQnaDYZziyAalxNJV3yF4qW+FeOpzYE4RQfSkLdD0GGpjq+VqvDlSr5h+nGwizEk9CS3RxNvjYzein2YxVEIOmaXxbRABx+vXMSTDGLiZjeTTW6t3aJI+VPEU9Wx9QoeSTWAYjQ0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LPqUX7Hh; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LPqUX7Hh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4BF931F00A3E; Fri, 4 Sep 2026 18:45:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788547502; bh=h2FxEchpuU+eyPrMDnnc3VMDhOJbr8avwtR3jT+lb/E=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=LPqUX7HhzWs5AQzIHoeltfVQ/UJ0y1wDszgyNMdGtwS0R85ga7tFHLnIgyz422W89 XX1TCtjKSCDmZp8OmlhReFkzbltoqTFOXgYm96dijO96Y+k4F15FSsekpWn1WtsMBw OWusfYza/Z3XSDVvAfrdqpiMdD4jZohlkKqo33Z/vmsAe2QAp7u5q+8CjhomF0M7Ds vOvDR+oeNoZedwyDbNd+CXUdcgOFkZ/h3eHPdvw9eFRA1TAGkbcRQrJyCwxYv1kLfy XzGcV+IPHaakfG+9kfhudVJyB+ZpGMpySBPkgrEmryTAmlWo1RvtI0RflDJmx58Mnv d4Eq0OxutxA7Q== From: Sasha Levin To: stable@vger.kernel.org Cc: Sergey Senozhatsky , Chris Mason , Brian Geffon , David Stevens , Minchan Kim , Richard Chang , Andrew Morton , Sasha Levin Subject: [PATCH 5.15.y 1/2] zram: fixup read_block_state() Date: Fri, 4 Sep 2026 14:44:58 -0400 Message-ID: <20260904184459.1345418-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026090354-deafening-decorated-22e7@gregkh> References: <2026090354-deafening-decorated-22e7@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Sergey Senozhatsky [ Upstream commit 8b05d2d8af817c6a1e23032df51e7ad83030d543 ] ac_time is now in seconds, do not use ktime_to_timespec64() [akpm@linux-foundation.org: remove now-unused local `ts'] [akpm@linux-foundation.org: fix build] Link: https://lkml.kernel.org/r/20260115033031.3818977-1-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Reported-by: Chris Mason Closes: https://lkml.kernel.org/r/20260114124522.1326519-1-clm@meta.com Cc: Brian Geffon Cc: David Stevens Cc: Minchan Kim Cc: Richard Chang Signed-off-by: Andrew Morton [ Stable tree note: The ac_time conversion described above is not present here, so retain the ktime_t conversion and microsecond output. Move the timespec64 temporary into the scan loop instead, allowing the follow-up bounds fix to move nr_pages initialization under init_lock cleanly. ] Stable-dep-of: 391f057f44a5 ("zram: fix out-of-bounds access in read_block_state()") Signed-off-by: Sasha Levin --- drivers/block/zram/zram_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index a9f71b27d235a..d1f4b61509a0c 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -886,7 +886,6 @@ static ssize_t read_block_state(struct file *file, char __user *buf, ssize_t index, written = 0; struct zram *zram = file->private_data; unsigned long nr_pages = zram->disksize >> PAGE_SHIFT; - struct timespec64 ts; kbuf = kvmalloc(count, GFP_KERNEL); if (!kbuf) @@ -901,6 +900,7 @@ static ssize_t read_block_state(struct file *file, char __user *buf, for (index = *ppos; index < nr_pages; index++) { int copied; + struct timespec64 ts; zram_slot_lock(zram, index); if (!zram_allocated(zram, index)) -- 2.53.0