<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1507862290271_5948"><span>Hi Balbir,</span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"><span id="yui_3_16_0_ym19_1_1507862290271_16317">sorry for not mentioning details.</span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948"><span><br></span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948">below are the details</div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6064">1. What machine you tried this on?</span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"> - I am using PowerPC e500mc processor with and it's customised. Can't share much details<br clear="none" style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6065"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6066">2. What MMU mode?</span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"> -Not sure about this.<br clear="none" style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6067"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6068">3. What kernel?</span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"> -kernel version is 4.1.35<br clear="none" style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6069"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6070">4. What gcc version, flags for KASAN</span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"> -gcc version 4.9.2 and KASAN_MINIMAL FLAG <br clear="none" style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6071"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_6072">5. What was the KASAN design - how much shadow memory to real memory?</span><br></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;" id="yui_3_16_0_ym19_1_1507862290271_12802"> -we have continuous 2 GB low memory and shadow size is 256 MB<br></span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;"><br></span></div><div id="yui_3_16_0_ym19_1_1507862290271_5948" dir="ltr"><span style="font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, "Lucida Grande", sans-serif;"><br></span></div><div></div><div id="yui_3_16_0_ym19_1_1507862290271_6014"> </div><div class="signature" id="yui_3_16_0_ym19_1_1507862290271_6008"><div id="yui_3_16_0_ym19_1_1507862290271_6007"><span style="font-size:16px;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);" id="yui_3_16_0_ym19_1_1507862290271_6006">THANKS AND REGARDS,</span></div><div id="yui_3_16_0_ym19_1_1507862290271_6013"><span style="font-size:medium;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);"><br></span></div><div style="background-color:transparent;font-style:normal;" id="yui_3_16_0_ym19_1_1507862290271_6012"><span style="font-size:medium;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);" id="yui_3_16_0_ym19_1_1507862290271_6011">KHUSHAL K. GUMGAONKAR</span></div><div style="background-color:transparent;font-style:normal;" id="yui_3_16_0_ym19_1_1507862290271_6010"><span style="font-size:medium;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);" id="yui_3_16_0_ym19_1_1507862290271_6009">M.TECH IN VISUAL INFORMATION AND EMBEDDED SYSTEM,</span></div><div style="background-color:transparent;font-style:normal;" id="yui_3_16_0_ym19_1_1507862290271_14523"><span style="font-size:16px;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);" id="yui_3_16_0_ym19_1_1507862290271_19665">IIT KHARAGPUR</span></div></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: times new roman, new york, times, serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Friday, 13 October 2017 4:45 AM, Balbir Singh <bsingharora@gmail.com> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div dir="ltr">On Tue, Oct 10, 2017 at 11:51 PM, KHUSHAL GUMGAONKAR<div class="yqt2026373896" id="yqtfd59941"><br clear="none"><<a shape="rect" ymailto="mailto:khushaluniversal@yahoo.com" href="mailto:khushaluniversal@yahoo.com">khushaluniversal@yahoo.com</a>> wrote:<br clear="none">> Hi Aneesh,<br clear="none">><br clear="none">> I am facing unknown error in printk during boot and after that kernel Hangs<br clear="none">> on powerpc with KASan changes.</div><br clear="none">><br clear="none"><br clear="none">This is probably the worst way to reach out. The reason being<br clear="none"><br clear="none">You describe the crash your seeing, there is no description of<br clear="none"><br clear="none">1. What machine you tried this on?<br clear="none">2. What MMU mode?<br clear="none">3. What kernel?<br clear="none">4. What gcc version, flags for KASAN<br clear="none">5. What was the KASAN design - how much shadow memory to real memory?<br clear="none"><br clear="none">Unless you can work out those details, this is just noise on the list.<br clear="none">I posted an RFC for radix -<br clear="none"><a shape="rect" href="http://linuxppc.10917.n7.nabble.com/RFC-PATCH-v1-powerpc-radix-kasan-KASAN-support-for-Radix-td125864.html" target="_blank">http://linuxppc.10917.n7.nabble.com/RFC-PATCH-v1-powerpc-radix-kasan-KASAN-support-for-Radix-td125864.html</a><br clear="none"><br clear="none">It needs work, please read the implementations so far, discuss your<br clear="none">design/understanding. Then we can discuss what issues you are running<br clear="none">into, otherwise it's just noise without effort.<br clear="none"><br clear="none">Balbir Singh.<div class="yqt2026373896" id="yqtfd42643"><br clear="none"></div></div><br><br></div> </div> </div> </div></div></body></html>