New Build 41892: 01-05-2020-r41892

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kernel-panic69
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Joined: 08 May 2018
Posts: 6891
Location: Texas, USA

PostPosted: Sun Jan 05, 2020 19:22    Post subject: New Build 41892: 01-05-2020-r41892 Reply with quote
Downloads: (if a link does not work, try another)

https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2020/01-05-2020-r41892/

ftp://ftp.dd-wrt.com/betas/2020/01-05-2020-r41892/

Alternate link: DD-WRT website
Note: for wget (or curl) with CLI flash (`write {f/w} linux`), change the https to http, use `curl -k {link} -o {file}`, or ftp

Changelogs:
SVN* changelog since last build: 41874
Summary: (deprecated after 29739)
*Github mirror: https://github.com/mirror/dd-wrt/

Important: if reporting any issues, provide applicable info (GUI syslog, `dmesg`, `cat /var/log/messages`, etc.)
Or put into SVN ticket. For firewall issues, also provide "iptables" info (`iptables -L`, `iptables -t nat -L`, & the /tmp/.ipt file).

Template to copy (after "Code:") for posting issues, be sure to include the mode in use (gateway, AP, CB, etc.):
Code:
[b][u]Router/Version:[/u][/b]
[b]Mode:[/b]
[b]File: [/b]
[b]Kernel: [/b]
[b]Status: [/b]

WARNING: This thread is to report on flashing this experimental test build, providing important info for both developers and users. Always state your hardware model, version, mode (e.g. Repeater) and SPECIFIC build (e.g. 33555_NEWD-2_K3.x_mega-nv64k.bin). Please avoid discussions and create a new thread to discuss specific problems or questions, as this thread is for reporting, not support. Posts may be deleted or moved to keep this thread manageable and useful. If you don't understand the risks or what to flash and how, with a means of recovery if it bricks, do NOT flash this experimental test build.

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Last edited by kernel-panic69 on Sun Jan 05, 2020 21:21; edited 1 time in total
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turbowells
DD-WRT User


Joined: 14 Sep 2019
Posts: 157
Location: Maine, USA

PostPosted: Sun Jan 05, 2020 19:37    Post subject: Reply with quote
Posted in the r41874 thread...

Iceberger wrote:
Do not upgrade to DD-WRT v3.0-r41892 std (01/05/20) on the Dlink DIR-882 A1 Router! you will brick it!!
turbowells
DD-WRT User


Joined: 14 Sep 2019
Posts: 157
Location: Maine, USA

PostPosted: Sun Jan 05, 2020 19:38    Post subject: Reply with quote
Router/Version: Trendnet TEW-810DR
File: dlink-dir810lb1-webflash.bin
Firmware: DD-WRT v3.0-r41892 std (01/05/20)
Kernel: Linux 3.10.108-d8 #6666 Sun Jan 5 13:23:06 +04 2020 mips
Mode: Router/OpenVPN client
Previous: r41874
Reset?: N
Status: Working

Flashed from gui. Syslog clean. Up one hour.
Iceberger
DD-WRT Novice


Joined: 03 Jun 2018
Posts: 46

PostPosted: Mon Jan 06, 2020 6:21    Post subject: Reply with quote
turbowells wrote:
Posted in the r41874 thread...

Iceberger wrote:
Do not upgrade to DD-WRT v3.0-r41892 std (01/05/20) on the Dlink DIR-882 A1 Router! you will brick it!!


Correct. it might work for other routers. not for the D-Link DIR882-A

This is what I wrote earlier:
In system information it shows: Dlink DIR860L B1
did something went wrong creating this build?
Although the file name is dlink-dir882-a1-webflash.bin it's 2 MB smaller then the previous one...

When trying to revert back to r41874 the unit got bricked.
flashing back completed but the unit didn't start again...

Finally I recovered the router back to r41874 using the D-Link Router Recovery mode...
casualtester
DD-WRT User


Joined: 13 Dec 2015
Posts: 314

PostPosted: Mon Jan 06, 2020 7:41    Post subject: Reply with quote
Iceberger and turbowells,

Thanks for the warning.
x86ln
DD-WRT Novice


Joined: 12 Jan 2020
Posts: 2

PostPosted: Mon Jan 13, 2020 15:12    Post subject: Reply with quote
Iceberger wrote:
turbowells wrote:
Posted in the r41874 thread...

Iceberger wrote:
Do not upgrade to DD-WRT v3.0-r41892 std (01/05/20) on the Dlink DIR-882 A1 Router! you will brick it!!


Correct. it might work for other routers. not for the D-Link DIR882-A

This is what I wrote earlier:
In system information it shows: Dlink DIR860L B1
did something went wrong creating this build?
Although the file name is dlink-dir882-a1-webflash.bin it's 2 MB smaller then the previous one...

When trying to revert back to r41874 the unit got bricked.
flashing back completed but the unit didn't start again...

Finally I recovered the router back to r41874 using the D-Link Router Recovery mode...


After pulling apart the r41892 images for the DIR-860L B1 and DIR-882, I have discovered there is definitely something weird going on.

r41892 for both DIR-860L B1 and DIR-882 contain the 3.10.108-d8 kernel, but r41874 for the DIR-882 is kernel 4.14.161, and 41954 is kernel 4.14.162.

The /lib/modules/ dir in r41892 for both DIR-882 and DIR-860L B1 seem very similar.
casualtester
DD-WRT User


Joined: 13 Dec 2015
Posts: 314

PostPosted: Mon Jan 13, 2020 19:10    Post subject: Reply with quote
x86ln wrote:
...The /lib/modules/ dir in r41892 for both DIR-882 and DIR-860L B1 seem very similar.


? Isn't that to be expected?
Both use the MediaTek MT7621AT

The WLAN should be different though,
DIR-878: MediaTek MT7615N
DIR-860L B1: MediaTek MT7612E, MediaTek MT7602E
x86ln
DD-WRT Novice


Joined: 12 Jan 2020
Posts: 2

PostPosted: Tue Jan 14, 2020 6:34    Post subject: Reply with quote
casualtester wrote:
x86ln wrote:
...The /lib/modules/ dir in r41892 for both DIR-882 and DIR-860L B1 seem very similar.


? Isn't that to be expected?
Both use the MediaTek MT7621AT

The WLAN should be different though,
DIR-878: MediaTek MT7615N
DIR-860L B1: MediaTek MT7612E, MediaTek MT7602E


Perhaps, but as you said, not in regards to WLAN. I would expect to see the MT7615E module at least. I have investigated the situation and it is far more bizarre -- and perhaps dangerous -- than I had thought.

I downloaded webflash.bin distributions for the DIR-882 A1 and the DIR-860L B1. The suspect revision is r41892. For reference I also downloaded revisions r41874 and r41954.

Code:
[xln@nacho Templates]$ ls -l *.bin
-rw-rw-r--. 1 xln xln 13938716 Jan 14 15:53 r41874--dlink-dir860lb1-webflash.bin
-rw-rw-r--. 1 xln xln 16146460 Jan 14 15:53 r41874--dlink-dir882-a1-webflash.bin
-rw-rw-r--. 1 xln xln 13701148 Jan 14 15:53 r41892--dlink-dir860lb1-webflash.bin
-rw-rw-r--. 1 xln xln 13729820 Jan 14 15:53 r41892--dlink-dir882-a1-webflash.bin
-rw-rw-r--. 1 xln xln 13721628 Jan 14 15:53 r41954--dlink-dir860lb1-webflash.bin
-rw-rw-r--. 1 xln xln 15933468 Jan 14 15:53 r41954--dlink-dir882-a1-webflash.bin


Code:
[xln@nacho Templates]$ echo; for bin in *.bin; do BWF="${bin}walk"; binwalk -Bv "$bin" > "$BWF"; cat $BWF | grep 'Target\|MD5\|LZMA\|Squashfs'; echo; done

Target File:   /home/xln/Templates/r41874--dlink-dir860lb1-webflash.bin
MD5 Checksum:  8994adafe1320224b8e8905aa203e968
92            0x5C            LZMA compressed data, properties: 0x5D, dictionary size: 8388608 bytes, uncompressed size: 3819776 bytes
1282140       0x13905C        Squashfs filesystem, little endian, version 4.0, compression:xz, size: 12652654 bytes, 1686 inodes, blocksize: 131072 bytes, created: 2020-01-03 10:20:11

Target File:   /home/xln/Templates/r41874--dlink-dir882-a1-webflash.bin
MD5 Checksum:  7637dde0add833323bad3cffa95974cc
188           0xBC            LZMA compressed data, properties: 0x6D, dictionary size: 8388608 bytes, uncompressed size: 6575504 bytes
2031644       0x1F001C        Squashfs filesystem, little endian, version 4.0, compression:xz, size: 14112482 bytes, 1693 inodes, blocksize: 131072 bytes, created: 2020-01-03 10:30:15

Target File:   /home/xln/Templates/r41892--dlink-dir860lb1-webflash.bin
MD5 Checksum:  2c30f1addc8e798bda74aa973d757ab6
92            0x5C            LZMA compressed data, properties: 0x5D, dictionary size: 8388608 bytes, uncompressed size: 3819776 bytes
1282140       0x13905C        Squashfs filesystem, little endian, version 4.0, compression:xz, size: 12415126 bytes, 1686 inodes, blocksize: 131072 bytes, created: 2020-01-05 09:27:23

Target File:   /home/xln/Templates/r41892--dlink-dir882-a1-webflash.bin
MD5 Checksum:  ee64aa1f7a03ce52e077a3f304a5dc8a
188           0xBC            LZMA compressed data, properties: 0x6D, dictionary size: 8388608 bytes, uncompressed size: 3819776 bytes
1310748       0x14001C        Squashfs filesystem, little endian, version 4.0, compression:xz, size: 12415126 bytes, 1686 inodes, blocksize: 131072 bytes, created: 2020-01-05 09:27:23

Target File:   /home/xln/Templates/r41954--dlink-dir860lb1-webflash.bin
MD5 Checksum:  71512651a5bd91d6bf938c3b5b5aedd6
92            0x5C            LZMA compressed data, properties: 0x5D, dictionary size: 8388608 bytes, uncompressed size: 3819776 bytes
1282140       0x13905C        Squashfs filesystem, little endian, version 4.0, compression:xz, size: 12435554 bytes, 1686 inodes, blocksize: 131072 bytes, created: 2020-01-09 14:34:15

Target File:   /home/xln/Templates/r41954--dlink-dir882-a1-webflash.bin
MD5 Checksum:  8839d71942a0cb67b0757f4d58d54fc2
188           0xBC            LZMA compressed data, properties: 0x6D, dictionary size: 8388608 bytes, uncompressed size: 6575504 bytes
2031644       0x1F001C        Squashfs filesystem, little endian, version 4.0, compression:xz, size: 13898610 bytes, 1693 inodes, blocksize: 131072 bytes, created: 2020-01-09 14:37:50


In regards to the LZMA compressed sections (kernel), we can see that the r41892 webflash binaries for the DIR-882 A1 and DIR-860L B1 have kernels with the uncompressed size of 3819776 bytes. This is the 3.10.108-d8 kernel. The r41874 and r41954 binaries for the DIR-860L B1 also contain kernels of that size. On the other hand, we have r41874 and r41954 webflash binaries for the DIR-882 A1 that contain kernels with the uncompressed size of 6575504. These are the 4.14.161 and 4.14.162 kernels.

Now, if we turn our attention to the Squashfs sections (filesystem), we can see that the r41892 webflash binaries for both the DIR-860LB1 and DIR-882 A1 are IDENTICAL! Created at the same time, and having the exact same uncompressed sizes! The r41874 and r41954 webflash binaries are all totally different from one another.

All of this evidence strongly suggests that the r41892 build for the DIR-882 A1 is a dud. It may be safest to rebuild it, or at least pull it from the archive.

I don't know who to contact about this, but I feel like I need to tell someone about it. I hope one of you lads knows what to do in this situation!
casualtester
DD-WRT User


Joined: 13 Dec 2015
Posts: 314

PostPosted: Tue Jan 14, 2020 8:22    Post subject: Reply with quote
Click on the Contact button at the top of the page and that should fire off a message to BrainSlayer.
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2562
Location: Indy

PostPosted: Tue Jan 14, 2020 20:20    Post subject: Reply with quote
casualtester wrote:
Click on the Contact button at the top of the page and that should fire off a message to BrainSlayer.
Not directly, at least, but I've emailed him about it now.
_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 20.7|FT2020.4: EA6900v1.1@1GHz, F7D8302@532|DD 44062: DIR-810L, WNDR4500v2 & 4000@533,
R6300v1, RT-N66U@663, E1500@353, WRT54G{Lv1.1,Sv6}@250
|OpenWRT 19.7.3: RT-ACRH13, R6220, WNDR3700v4
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