https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235342
Bug ID: 235342
Summary: [em] em0 hangs when vnet jail starts while
transferring files
Product: Base System
Version: CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: naito.yuich...@gmail.com
I'm using "FreeBSD 13.0-CURRENT r343486 GENERIC-NODEBUG amd64" with following
NIC.
em0@pci0:0:31:6: class=0x020000 card=0x00008086 chip=0x15b78086 rev=0x31
hdr=0x00
vendor = 'Intel Corporation'
device = 'Ethernet Connection (2) I219-LM'
class = network
subclass = ethernet
A following scenario causes em driver hangs.
1. start file transfer through em0.
I used sftp or netatalk. Both of them causes same result.
2. start vnet jail while transferring the file.
I used iocage with vnet=on dhcp=on bpf=yes.
Without iocage using jail.conf causes same result.
3. "em0: TX(0) desc avail = 1024, pidx = 0" is shown on console repetitive and
infinitely.
After 3., em0 hangs and no packets can be sent and/or received.
ifconfig up/down won't recover this hang up.
I've tried my jail with iocage set vnet=on dhcp=off bpf=no,
Nothing changed.
Upgrading to 'FreeBSD 13.0-CURRENT r343598 GENERIC-NODEBUG amd64'
won't fix this problem.
Workaround is installing net/intel-em-kmod for now.
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