From: rockford@yandex.ru (Панов Андрей)
To: linux-arm-kernel@lists.infradead.org
Subject: Bug in drivers/net/ethernet/freescale/fec_main.c, TX is broken. In 4.0.0-rc3
Date: Tue, 10 Mar 2015 23:12:14 +0300 [thread overview]
Message-ID: <3625951426018334@web26j.yandex.ru> (raw)
In-Reply-To: <390621425930628@web28o.yandex.ru>
Hello!
Adding lakml to cc:
> Commit 2b995f63987013bacde99168218f9c7b252bdcf1 in 4.0.0-rc3 introduces a nasty bug in transmit, corrupting packets.
>
> To reproduce:
>
> $ dd if=/dev/zero of=zeros bs=1M count=20
> $ md5sum -b zeros
> 8f4e33f3dc3e414ff94e5fb6905cba8c *zeros
>
> This checksum is correct.
>
> Copy file "zeros" to another host with NFS, and it gets corrupted, checksum is changed.
> File should be big, small amounts of transmit isn't affected.
>
> I use an i.MX6 Quad board.
>
> If this commit is reverted, all works fine.
3.19 works fine too.
And it is not random corruption, when copying all-zero file this is received on NFS host:
$ hd zeros | head -16
00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
0052c0f0 00 00 00 00 00 00 00 00 1c f0 9f e5 1c f0 9f e5 |................|
0052c100 1c f0 9f e5 1c f0 9f e5 1c f0 9f e5 1c f0 9f e5 |................|
0052c110 1c f0 9f e5 1c f0 9f e5 1c f0 9f e5 74 fb 00 00 |............t...|
0052c120 bc ff 93 00 c0 ff 93 00 c4 ff 93 00 c8 ff 93 00 |................|
0052c130 cc ff 93 00 d0 ff 93 00 d4 ff 93 00 d8 ff 93 00 |................|
0052c140 13 00 00 00 28 63 29 20 43 6f 70 79 72 69 67 68 |....(c) Copyrigh|
0052c150 74 20 32 30 30 37 2d 32 30 31 32 2c 20 46 72 65 |t 2007-2012, Fre|
0052c160 65 73 63 61 6c 65 20 53 65 6d 69 63 6f 6e 64 75 |escale Semicondu|
0052c170 63 74 6f 72 2e 20 41 6c 6c 20 72 69 67 68 74 73 |ctor. All rights|
0052c180 20 72 65 73 65 72 76 65 64 2e 00 00 dd 00 2c 41 | reserved.....,A|
0052c190 11 73 00 00 d3 74 00 00 3d 75 00 00 a9 78 00 00 |.s...t..=u...x..|
0052c1a0 4f 78 00 00 75 77 00 00 07 76 00 00 c3 79 00 00 |Ox..uw...v...y..|
0052c1b0 09 7a 00 00 75 7a 00 00 97 22 00 00 49 1f 00 00 |.z..uz..."..I...|
0052c1c0 b9 21 00 00 ff 70 00 00 90 21 90 00 23 4a 52 f8 |.!...p...!..#JR.|
Looks like zero page with vectors at beginning.
Freescale i.MX6 Quad-based Embedsky E9 board.
--
??????
next parent reply other threads:[~2015-03-10 20:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <390621425930628@web28o.yandex.ru>
2015-03-10 20:12 ` Панов Андрей [this message]
2015-03-16 9:21 ` Bug in drivers/net/ethernet/freescale/fec_main.c, TX is broken. In 4.0.0-rc3 fugang.duan at freescale.com
2015-03-16 13:37 ` Панов Андрей
2015-03-16 14:01 ` fugang.duan at freescale.com
2015-03-16 19:09 ` Панов Андрей
2015-03-21 20:53 ` Russell King - ARM Linux
2015-03-21 22:35 ` Fabio Estevam
2015-03-22 20:08 ` Панов Андрей
[not found] ` <BLUPR03MB373FC71B9A8559E51084C26F50D0@BLUPR03MB373.namprd03.prod.outlook.com>
2015-03-23 8:22 ` Панов Андрей
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