<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_1507639716641_2437"><span></span></div><div></div><div id="yui_3_16_0_ym19_1_1507639716641_4139"> Hi Aneesh,</div><div id="yui_3_16_0_ym19_1_1507639716641_4211"><br id="yui_3_16_0_ym19_1_1507639716641_4212"></div><div id="yui_3_16_0_ym19_1_1507639716641_4213">I am facing unknown error in printk during boot and after that kernel Hangs on powerpc with KASan changes.</div><div id="yui_3_16_0_ym19_1_1507639716641_4214"><br id="yui_3_16_0_ym19_1_1507639716641_4215"></div><div id="yui_3_16_0_ym19_1_1507639716641_4216">below is stack </div><div id="yui_3_16_0_ym19_1_1507639716641_4217">BUG: KASan: unknown crash in printk+0x60/0xb0 at addr 40bd4004</div><div id="yui_3_16_0_ym19_1_1507639716641_4218">Read of size 4 by task swapper/0</div><div id="yui_3_16_0_ym19_1_1507639716641_4219">CPU: 0 PID: 0 Comm: swapper Not tainted 4.1.35-rt41-g8ca68bd-dirty #0</div><div id="yui_3_16_0_ym19_1_1507639716641_4220">Call Trace:</div><div id="yui_3_16_0_ym19_1_1507639716641_4221">[40bd7e70] [40967e08] dump_stack+0x90/0xbc (unreliable)</div><div id="yui_3_16_0_ym19_1_1507639716641_4222">[40bd7ea0] [4014b588] kasan_report_error+0x408/0x410</div><div id="yui_3_16_0_ym19_1_1507639716641_4223">[40bd7f00] [4014ba54] kasan_report+0x34/0x50</div><div id="yui_3_16_0_ym19_1_1507639716641_4224">[40bd7f30] [40149df4] __asan_load4+0xe4/0x100</div><div id="yui_3_16_0_ym19_1_1507639716641_4225">[40bd7f60] [40966e74] printk+0x60/0xb0</div><div id="yui_3_16_0_ym19_1_1507639716641_4226">[40bd7fb0] [40b418b4] start_kernel+0x9c/0x42c</div><div id="yui_3_16_0_ym19_1_1507639716641_4227">[40bd7ff0] [400003d8] set_ivor+0x140/0x17c</div><div id="yui_3_16_0_ym19_1_1507639716641_4228"><br id="yui_3_16_0_ym19_1_1507639716641_4229"></div><div id="yui_3_16_0_ym19_1_1507639716641_4230">Memory state around the buggy address:</div><div id="yui_3_16_0_ym19_1_1507639716641_4231"> 40bd3ec0: 00 00 00 0a 7f b0 67 70 7f f6 72 87 7f f6 d9 e5</div><div id="yui_3_16_0_ym19_1_1507639716641_4232"> 40bd3f40: 00 00 00 0a 7f b0 67 70 7f f6 72 87 7f f6 d9 e5</div><div id="yui_3_16_0_ym19_1_1507639716641_4233">>40bd3fc0: 00 00 00 0a 7f b0 67 70 7f f6 72 87 7f f6 d9 e5</div><div id="yui_3_16_0_ym19_1_1507639716641_4234"> ^</div><div id="yui_3_16_0_ym19_1_1507639716641_4235"> 40bd4040: 00 00 00 0a 7f b0 67 70 7f f6 72 87 7f f6 d9 e5</div><div id="yui_3_16_0_ym19_1_1507639716641_4236"> 40bd40c0: 00 00 00 0a 7f b0 67 70 7f f6 72 87 7f f6 d9 e5</div><div id="yui_3_16_0_ym19_1_1507639716641_4237"><br id="yui_3_16_0_ym19_1_1507639716641_4238"></div><div id="yui_3_16_0_ym19_1_1507639716641_4239">please suggest some solutions which I can try. I am completely exhausted now with trial and error.</div><div id="yui_3_16_0_ym19_1_1507639716641_4240"><br id="yui_3_16_0_ym19_1_1507639716641_4241"></div><div id="yui_3_16_0_ym19_1_1507639716641_4242" dir="ltr"><font color="#0000ff" face="garamond, new york, times, serif" id="yui_3_16_0_ym19_1_1507639716641_5801"><span style="font-size: 16px;" id="yui_3_16_0_ym19_1_1507639716641_5800"><b id="yui_3_16_0_ym19_1_1507639716641_5799">I was not able to send mail through community and hence sending personal mail.</b></span></font></div><div id="yui_3_16_0_ym19_1_1507639716641_4242"><br></div><div id="yui_3_16_0_ym19_1_1507639716641_4242"><br></div><div class="signature" id="yui_3_16_0_ym19_1_1507639716641_5785"><div id="yui_3_16_0_ym19_1_1507639716641_5784"><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_1507639716641_5783">THANKS AND REGARDS,</span></div><div id="yui_3_16_0_ym19_1_1507639716641_7409"><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;"><span style="font-size:medium;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);">KHUSHAL K. GUMGAONKAR</span></div><div style="background-color:transparent;font-style:normal;"><span style="font-size:medium;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);">M.TECH IN VISUAL INFORMATION AND EMBEDDED SYSTEM,</span></div><div style="background-color:transparent;font-style:normal;"><span style="font-size:16px;font-family:garamond, 'new york', times, serif;font-weight:bold;color:rgb(0, 0, 255);">IIT KHARAGPUR</span></div></div></div></body></html>