作业写完没. <br><br><br><html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <div id="imail_signature" class="ntes-signature"> <a href="https://dashi.163.com/projects/signature-manager/detail/index.html?ftlId=1&name=wangpcmic&uid=wangpcmic%40163.com&iconUrl=https%3A%2F%2Fmail-online.nosdn.127.net%2Fqiyelogo%2FdefaultAvatar.png&email=%E9%82%AE%E7%AE%B1%EF%BC%9Awangpcmic%40163.com&items=%5B%22%E9%82%AE%E7%AE%B1%EF%BC%9Awangpcmic%40163.com%22%5D" style="display:block;background:#fff; max-width: 400px; _width: 400px;padding:15px 0 10px 0;text-decoration: none; outline:none;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:none !important;text-size-adjust:none !important;"> <table cellpadding="0" style="width: 100%; max-width: 100%; table-layout: fixed; border-collapse: collapse;color: #9b9ea1;font-size: 14px;line-height:1.3;-webkit-text-size-adjust:none !important;text-size-adjust:none !important;"> <tbody style="font-family: 'PingFang SC', 'Hiragino Sans GB','WenQuanYi Micro Hei', 'Microsoft Yahei', '微软雅黑', verdana !important; 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margin-bottom: 12px; font-size: 14px; line-height: 1.25; color: #89898c; ">---- Replied Message ----</div> <div style=" margin-bottom: 12px; font-size: 13px; line-height: 1.25; color: #2c2c2e; padding: 2px; border-radius: 8px; background-color: #f0f0f0; "> <table width="100%" cellpadding="0" cellspacing="10" border="0"> <tr> <td valign="top" style=" width: 4em; font-size: 13px; line-height: 1.25; color: #89898c; white-space: nowrap; ">From</td> <td valign="top" style=" font-size: 13px; line-height: 1.25; color: #2c2c2e; word-break: break-all; "><a class="mail-from" style="color: #1c83eb; text-decoration: none" href="mailto:15720603159@163.com">jinag<15720603159@163.com></a></td> </tr> <tr> <td valign="top" style=" width: 4em; font-size: 13px; line-height: 1.25; color: #89898c; white-space: nowrap; ">Date</td> <td class="mail-date" valign="top" style=" font-size: 13px; line-height: 1.25; color: #2c2c2e; word-break: break-all; ">08/23/2023 19:20</td> </tr> <tr style=""> <td valign="top" style=" width: 4em; font-size: 13px; line-height: 1.25; color: #89898c; ">To</td> <td valign="top" style=" font-size: 13px; line-height: 1.25; color: #2c2c2e; word-break: break-all; "><a class="mail-to" style="color: #1c83eb; text-decoration: none" href="mailto:users@dpdk.org">users@dpdk.org</a></td> </tr> <tr style="display:none;"> <td valign="top" style=" width: 4em; font-size: 13px; line-height: 1.25; color: #89898c; ">Cc</td> <td valign="top" style=" font-size: 13px; line-height: 1.25; color: #2c2c2e; word-break: break-all; "></td> </tr> <tr> <td valign="top" style=" width: 4em; font-size: 13px; line-height: 1.25; color: #89898c; ">Subject</td> <td class="mail-subject" valign="top" style=" font-size: 13px; line-height: 1.25; color: #2c2c2e; word-break: break-all; ">vfio module crash when i used dpdk secondary process send pkts</td> </tr> </table> </div> <div><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div style="margin:0;">when I use dpdk to call rte_eth_tx_burst function for sending data from the secondary process, vfio will crash:</div><div style="margin:0;"><br></div><div style="margin:0;">PID: 60699 TASK: ffff8f0152235df00 CPU: 14 COMMAND: "testlstack02"</div><div style="margin:0;"> #0 [ffffa7d8cecc39a8] machine_kexec at ffffffff9045d67b</div><div style="margin:0;"> #1 [ffffa7d8ceec3a00] __crash_kexec at ffffffff90562e92</div><div style="margin:0;"> #2 [ffffa7d8ceec3ac0] panic at ffffffff904b9b79</div><div style="margin:0;"> #3 [ffffa7d8ceec3b48] oops_end at ffffffff904231fc</div><div style="margin:0;"> #4 [ffffa7d8ceec3b70] remap_pfn_range at ffffffff90664772</div><div style="margin:0;"> #5 [ffffa7d8ceec3c58] remap_pfn_range at ffffffff90664772</div><div style="margin:0;"> #6 [ffffa7d8ceec3da0] vfio_pci_mmap_fault at ffffffffc-bda821 [vfio_pci] </div><div style="margin:0;"> #7 [ffffa7d8ceec3dc0] __do_fault at ffffffff90662ee9</div><div style="margin:0;"> #8 [ffffa7d8ceec3df0] do fault at ffffffff90663b2c</div><div style="margin:0;"> #9 [ffffa7d8ceec3e90] __handle_mm_fault at ffffffff90663c9c</div><div style="margin:0;">#10 [ffffa7d8ceec3ec0] handle_mm_fault at ffffffff9047103b</div><div style="margin:0;">#11 [ffffa7d8ceec3ee0] __do_page_fault at ffffffff904712e1</div><div style="margin:0;">#12 [ffffa7d8ceec3f20] do_page_fault at ffffffff9047122e</div><div style="margin:0;">#13 [ffffa7d8ceec3f50] page_fault at ffffffff90e012de</div><div style="margin:0;"><br></div><div style="margin:0;">The crash occurs when the secondary queue of the secondary process send pkts. I have tested that the primary process and the first queue of the secondary process do not crash. I use i40e X710 nic.</div><div style="margin:0;"><br></div><div style="margin:0;">Has anyone ever encountered simlilar issue? please provide some ideas for fixing the issue.</div><div style="margin:0;">Thanks!</div><div style="margin:0;"><br></div></div></div> </div> </body> </html>