From mboxrd@z Thu Jan 1 00:00:00 1970 From: robin.murphy@arm.com (Robin Murphy) Date: Thu, 25 Jun 2015 12:00:25 +0100 Subject: BUG: Bad page state in process swapper pfn:XXXXX In-Reply-To: References: Message-ID: <558BDF49.7020908@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Arun, On 25/06/15 11:08, Arun Chandran wrote: [...] > A u-boot memtest for those areas resulted in errors[1 in 5 boots] > > SOCFPGA_ARRIA5 # mtest 0x1ff3a000 0x1ff4ffff > Pattern 00000002 Writing... Reading... > Mem error @ 0x1FF4A714: found FFFFFFFF, expected 000041C7 > > Mem error @ 0x1FF4A718: found 1C00FFFF, expected 000041C8 > > Mem error @ 0x1FF4A71C: found 143DCB25, expected 000041C9 > > Mem error @ 0x1FF4A720: found 01000608, expected 000041CA > > Mem error @ 0x1FF4A724: found 04060008, expected 000041CB > > Mem error @ 0x1FF4A728: found 1C000100, expected 000041CC > > Mem error @ 0x1FF4A72C: found 143DCB25, expected 000041CD > > Mem error @ 0x1FF4A730: found 1967A20A, expected 000041CE > > Mem error @ 0x1FF4A734: found 00000000, expected 000041CF > > Mem error @ 0x1FF4A738: found A20A0000, expected 000041D0 > > Mem error @ 0x1FF4A73C: found 00001667, expected 000041D1 > > Mem error @ 0x1FF4A740: found 00000000, expected 000041D2 > > Mem error @ 0x1FF4A744: found 00000000, expected 000041D3 > > Mem error @ 0x1FF4A748: found 00000000, expected 000041D4 > > Mem error @ 0x1FF4A74C: found 00000000, expected 000041D5 > > Mem error @ 0x1FF4A750: found E3D2A784, expected 000041D6 > Pattern 0000000A Writing... Reading... > Mem error @ 0x1FF3AE14: found 005A0320, expected 0000038F > Pattern FFFFFFF4 Writing... Reading... > Mem error @ 0x1FF3AE14: found 00400320, expected FFFFFC6F > Pattern FFFFFFEF Writing... Reading... > > > That means there is problem with my RAM [or board reset]. Or that your bootloader is leaving the network controller DMA'ing over kernel memory. That 'corruption' has a suspiciously familiar shape to it, and sure enough, turns out to be a valid ethernet packet - Wireshark had this to say about it: 1 0.000000000 HonHaiPr_cb:3d:14 Broadcast ARP 64 Who has 10.162.103.22? Tell 10.162.103.25 Robin. > > Sorry for the noise. > > --Arun > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >