Bug 253932 - Freebsd 11.4 crashes on reboots on ESXi with passthrough of NIC
Summary: Freebsd 11.4 crashes on reboots on ESXi with passthrough of NIC
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 11.4-RELEASE
Hardware: amd64 Any
: --- Affects Many People
Assignee: freebsd-bugs (Nobody)
Depends on:
Reported: 2021-03-01 09:51 UTC by arif
Modified: 2021-03-01 09:52 UTC (History)
1 user (show)

See Also:


Note You need to log in before you can comment on or make changes to this bug.
Description arif 2021-03-01 09:51:47 UTC
Hi All,

The FreeBSD 11.4 vanilla VM downloaded from freebsd.org is crashing when doing passthrough of Intel NIC
"Ethernet Controller X710 for 10GbE SFP+" after a couple of reboots.

In the ESXi kernel logs seeing this message
cpu10:2235436)IntrCookie: 1565: Unable to allocate 128 cookies: Out of resources
2021-02-24T13:32:47.831Z cpu10:2235436)PCIPassthru: 2461: Failed to allocate 128 MSIX interrupts"
2021-02-24T13:32:47.968Z cpu10:2235436)UserDump: 2630: vmx-vcpu-1:arif-debug-11: Dumping cartel 2235424 (from world 2235436) to file /vmfs/volumes/5e329ba9-50e9cd52-8a4b-0cc47aacfdbc/arif-new-11/vmx-zdump.000 ...
2021-02-24T13:32:48.771Z cpu1:2235436)UserDump: 2818: vmx-vcpu-1:arif-debug-11: Userworld(vmx-vcpu-1:arif-debug-11) coredump complete.
PCIPassthru: 2461: Failed to allocate 128 MSIX interrupts

The issue is not seen 10.* freebsd VM. Looks like there is some issue with pci_alloc and free functions. First of all why ESX allocating 128 interrupts for one MSIX interrupt. And again after some reboots all the available interrupts are exhausted.