mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-11 08:54:28 -05:00
75 lines
3.4 KiB
Diff
75 lines
3.4 KiB
Diff
From 6266f954a52641f550ef71653ea83c80bdd083be Mon Sep 17 00:00:00 2001
|
|
From: Ravi Kishore Tanuku <rktanuku@codeaurora.org>
|
|
Date: Fri, 29 May 2015 11:49:26 +0530
|
|
Subject: msm: camera: cci: Add out of boundary check
|
|
|
|
While optimizing the cci transactions, we compare
|
|
i2c addresses in consecutive commands using pointer
|
|
to command.
|
|
if (cmd->reg_addr + 1 ==(cmd+1)->reg_addr)
|
|
Here, we need to have a out of boundary
|
|
check to see if the pointer to that command does not
|
|
go out of bounds.
|
|
|
|
==================================================================
|
|
BUG: KASan: out of bounds access in msm_cci_i2c_write+0x644/0xe64 at addr ffffffc01ef225d0
|
|
Read of size 2 by task mm-qcamera-daem/6458
|
|
=============================================================================
|
|
BUG kmalloc-2048 (Not tainted): kasan: bad access detected
|
|
-----------------------------------------------------------------------------
|
|
|
|
Disabling lock debugging due to kernel taint
|
|
INFO: Slab 0xffffffbc027bc800 objects=16 used=16 fp=0x (null) flags=0x4080
|
|
INFO: Object 0xffffffc01ef22000 @offset=8192 fp=0x0000000000000101
|
|
Call trace:
|
|
[<ffffffc000089dd0>] dump_backtrace+0x0/0x174
|
|
[<ffffffc000089f54>] show_stack+0x10/0x1c
|
|
[<ffffffc000f7bc34>] dump_stack+0x1c/0x28
|
|
[<ffffffc0001bcbf4>] print_trailer+0x138/0x14c
|
|
[<ffffffc0001bd02c>] object_err+0x38/0x4c
|
|
[<ffffffc0001c1cb4>] kasan_report_error+0x21c/0x3f0
|
|
[<ffffffc0001c1f88>] kasan_report+0x68/0x78
|
|
[<ffffffc0001c11d0>] __asan_load2+0x78/0x84
|
|
[<ffffffc0008f6c7c>] msm_cci_i2c_write+0x640/0xe64
|
|
[<ffffffc0008f83ac>] msm_cci_config+0xde0/0x18fc
|
|
[<ffffffc0008f8f50>] msm_cci_subdev_ioctl+0x88/0xdc
|
|
[<ffffffc0008fb2a4>] msm_camera_cci_i2c_write_table+0x100/0x198
|
|
[<ffffffc00091d5d0>] msm_sensor_config32+0x684/0xe64
|
|
[<ffffffc00091bc94>] msm_sensor_subdev_ioctl+0xf8/0x28c
|
|
[<ffffffc00091be64>] msm_sensor_subdev_do_ioctl+0x3c/0x48
|
|
[<ffffffc000882cf0>] video_usercopy+0x2e8/0x4d4
|
|
[<ffffffc00091a8f0>] msm_sensor_subdev_fops_ioctl+0x10/0x1c
|
|
[<ffffffc0008908d4>] v4l2_compat_ioctl32+0x668/0x684
|
|
[<ffffffc00022611c>] compat_sys_ioctl+0x13c/0x1998
|
|
Memory state around the buggy address:
|
|
ffffffc01ef22480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|
|
ffffffc01ef22500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|
|
>ffffffc01ef22580: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
|
|
^
|
|
ffffffc01ef22600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
|
|
ffffffc01ef22680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
|
|
==================================================================
|
|
|
|
Change-Id: Id835bf3276c91cd80c3ef59e6648a6d6792d2567
|
|
Signed-off-by: Ravi Kishore Tanuku <rktanuku@codeaurora.org>
|
|
---
|
|
drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c b/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
|
|
index 86561ce..05a4c0b 100644
|
|
--- a/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
|
|
+++ b/drivers/media/platform/msm/camera_v2/sensor/cci/msm_cci.c
|
|
@@ -330,7 +330,7 @@ static int32_t msm_cci_calc_cmd_len(struct cci_device *cci_dev,
|
|
pack_max_len = size < (cci_dev->payload_size-len) ?
|
|
size : (cci_dev->payload_size-len);
|
|
for (i = 0; i < pack_max_len;) {
|
|
- if (cmd->delay)
|
|
+ if (cmd->delay || ((cmd - i2c_cmd) >= (cmd_size-1)))
|
|
break;
|
|
if (cmd->reg_addr + 1 ==
|
|
(cmd+1)->reg_addr) {
|
|
--
|
|
cgit v1.1
|
|
|