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!
