<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">+ Megha, Sharad and Eswar.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 18, 2022 at 2:03 PM Amiya Mohakud <<a href="mailto:amohakud@paloaltonetworks.com">amohakud@paloaltonetworks.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">Hi Michal/DPDK-Experts,</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">I am facing one issue in net/ena driver while fetching extended stats (xstats). The DPDK seems to segfault with below backtrace. </div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">DPDK Version: 20.11.1</div><div class="gmail_default" style="font-family:verdana,sans-serif">ENA version: 2.2.1</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">Using host libthread_db library "/lib64/libthread_db.so.1".</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">Core was generated by `/opt/dpfs/usr/local/bin/brdagent'.</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">Program terminated with signal SIGSEGV, Segmentation fault.</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">#0<span> </span>__memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:232</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">232 <span> </span>VMOVU <span> </span>%VEC(0), (%rdi)</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">[Current thread is 1 (Thread 0x7fffed93a400 (LWP 5060))]</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier;min-height:16px"><br></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">Thread 1 (Thread 0x7fffed93a400 (LWP 5060)):</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">#0<span> </span>__memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:232</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">#1<span> </span>0x00007ffff3c246df in ena_com_handle_admin_completion () from ../lib64/../../lib64/libdpdk.so.20</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">#2<span> </span>0x00007ffff3c1e7f5 in ena_interrupt_handler_rte () from ../lib64/../../lib64/libdpdk.so.20</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">#3<span> </span>0x00007ffff3519902 in eal_intr_thread_main () from /../lib64/../../lib64/libdpdk.so.20</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">#4<span> </span>0x00007ffff510714a in start_thread (arg=<optimized out>) at pthread_create.c:479</p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier">#5<span> </span>0x00007ffff561ff23 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95</p><p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier"><br></p><p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier"><br></p><p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Courier"><br></p><div class="gmail_default"><u>Background:</u></div><div class="gmail_default"><ul><li>This used to work fine with DPDK-19.11.3 , that means there was no crash observed with the 19.11.3 DPDK version, but now after upgrading to DPDK 20.11.1, DPDK is crashing with the above trace. </li><li>It looks to me as a DPDK issue.</li><li>I could see multiple fixes/patches in the net/ena area, but not able to identify which patch would exactly fix this issue.</li></ul></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_default" style="font-family:verdana,sans-serif"><div class="gmail_default"><div>For example: <a href="http://git.dpdk.org/dpdk/diff/?h=releases&id=aab58857330bb4bd03f6699bf1ee716f72993774" target="_blank">http://git.dpdk.org/dpdk/diff/?h=releases&id=aab58857330bb4bd03f6699bf1ee716f72993774</a></div><div><a href="https://inbox.dpdk.org/dev/20210430125725.28796-6-mk@semihalf.com/T/#me99457c706718bb236d1fd8006ee7a0319ce76fc" target="_blank">https://inbox.dpdk.org/dev/20210430125725.28796-6-mk@semihalf.com/T/#me99457c706718bb236d1fd8006ee7a0319ce76fc</a><br></div><div><br></div></div></div></blockquote><div class="gmail_default" style="font-family:verdana,sans-serif"><div class="gmail_default"><div><br></div><div>Could you please help here and let me know what patch could fix this issue.</div></div><div class="gmail_default"><br></div></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Regards</div><div class="gmail_default" style="font-family:verdana,sans-serif">Amiya</div></div>
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