On Tue, 22 Aug 2023 09:33:39 +0800 (CST) jinag <[email protected]> wrote:
> when I use dpdk to call rte_eth_tx_burst function for sending data from the > secondary process, vfio will crash: > > > PID: 60699 TASK: ffff8f0152235df00 CPU: 14 COMMAND: "testlstack02" > #0 [ffffa7d8cecc39a8] machine_kexec at ffffffff9045d67b > #1 [ffffa7d8ceec3a00] __crash_kexec at ffffffff90562e92 > #2 [ffffa7d8ceec3ac0] panic at ffffffff904b9b79 > #3 [ffffa7d8ceec3b48] oops_end at ffffffff904231fc > #4 [ffffa7d8ceec3b70] remap_pfn_range at ffffffff90664772 > #5 [ffffa7d8ceec3c58] remap_pfn_range at ffffffff90664772 > #6 [ffffa7d8ceec3da0] vfio_pci_mmap_fault at ffffffffc-bda821 [vfio_pci] > #7 [ffffa7d8ceec3dc0] __do_fault at ffffffff90662ee9 > #8 [ffffa7d8ceec3df0] do fault at ffffffff90663b2c > #9 [ffffa7d8ceec3e90] __handle_mm_fault at ffffffff90663c9c > #10 [ffffa7d8ceec3ec0] handle_mm_fault at ffffffff9047103b > #11 [ffffa7d8ceec3ee0] __do_page_fault at ffffffff904712e1 > #12 [ffffa7d8ceec3f20] do_page_fault at ffffffff9047122e > #13 [ffffa7d8ceec3f50] page_fault at ffffffff90e012de > > > 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. > > > Has anyone ever encountered simlilar issue? please provide some ideas for > fixing the issue. > Thanks! > If this is a kernel crash, it is a kernel bug. No matter what application does VFIO in kernel should not panic. What kernel version are you using? Is it an upstream long-term-stable kernel?
