<![CDATA[do_page_fault(): sending SIGSEGV to <myprogram> for invalid read access from...]]>Re: do_page_fault(): sending SIGSEGV to fast-gpio for invalid read access from 00000600

]]>http://community.onion.io/topic/2289/do_page_fault-sending-sigsegv-to-myprogram-for-invalid-read-access-fromRSS for NodeTue, 06 Oct 2026 16:13:59 GMTSat, 12 Aug 2017 22:28:23 GMT60<![CDATA[Reply to do_page_fault(): sending SIGSEGV to <myprogram> for invalid read access from... on Sat, 12 Aug 2017 22:28:23 GMT]]>Re: do_page_fault(): sending SIGSEGV to fast-gpio for invalid read access from 00000600

]]>http://community.onion.io/post/14120http://community.onion.io/post/14120Sat, 12 Aug 2017 22:28:23 GMT<![CDATA[Reply to do_page_fault(): sending SIGSEGV to <myprogram> for invalid read access from... on Sat, 12 Aug 2017 22:36:33 GMT]]>I have a program that reads from a usb cdc device (/dev/ttyACM0). It's basically a serial port. It runs fine anywhere else, but when run in Omega2 or Omega2+, it dies with the message:

do_page_fault(): sending SIGSEGV to nowd for invalid read access from 7faae0000,0,0,0,0,0,0,0,
[ 228.111736] epc = 0040106b in0,0,0,0,0,0,0,0, nowd[400000+2000]0,0,0,0,0,0,0,0,
[ 228.119167] ra = 00401079 in0,0,0,0,0,0,0,0, nowd[400000+2000]0,0,0,0,0,0,0,0,

(nowd) is my program.

Google do_page_fault() and SIGSEV results in a lot of hits. They all point to Omega2, LEDE, kernel 4.1.x. People have reported it happening to dnsmasq, fast-gpio, etc., some said it was fixed but no one pointed out what the problem was.

There was a similar thread that hinted DEVMEM not being configured in the kernel. So I built a LEDE firmware with DEVMEM and DEVKMEM enabled. No joy.

Can someone from Onion team shed a light on this issue?

]]>http://community.onion.io/post/14121http://community.onion.io/post/14121Sat, 12 Aug 2017 22:36:33 GMT<![CDATA[Reply to do_page_fault(): sending SIGSEGV to <myprogram> for invalid read access from... on Wed, 27 Nov 2019 22:03:49 GMT]]>Hey @Dzuy-Nguyen did you fix it? I'm having a similar problem here...

]]>http://community.onion.io/post/20695http://community.onion.io/post/20695Wed, 27 Nov 2019 22:03:49 GMT