Broadcom BCM57504 (100G) bnxt_en TX timeout and NIC reset on Proxmox 8.1.5 — while BCM57414 (25G) works fine on same host

[JuliusZet]

I have a similar issue with the following hardware:

• Mainboard: Supermicro H12SSL-NT
• NIC: Broadcom BCM57416 NetXtreme-E 10GBase-T Ethernet

Since I updated to the latest kernel, 7.0.14-20-pve, it happened two times:

• First occurrence was 1.5 hours after booting
  and
• second occurrence was 1 hour after booting.

Before that I had 7.0.14-15-pve and with that it never happened.

I reverted to 7.0.14-15-pve now and so far the issue did not reoccur. I will post an update if that changes.

Attached is an excerpt of my system log from the time when it happened and my /etc/network/interfaces file.

 

[FingerlessGloves]

I have 6 servers with a BCM57504 (237.1.148.0) which is a quad sfp28 card, firmware is from the latest HPE SSP for the HPE DL360 G10

I upgraded 3 of the servers to `7.0.14-19-pve` on 27th September 2026, and no seen any network issues.

Today I upgraded one of other 3 servers to `7.0.14-20-pve` within 10 minutes usually quicker, the transmits starts to timeout and it falls of the network



I then installed `7.0.14-19-pve` and the problem stopped, not had this issue at all prior to kernel update `7.0.14-20-pve` has proxmox installed on these hosts for months, but `7.0.14-19-pve` has been stable for hours now

I'm guessing my issue is caused by one of the CVE fixes, but I could be wrong.
- CVE-2026-92495: RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap
- CVE-2026-90101: bnxt_en: Fix call to hardware monitoring event handler

I have a test host that has 1gbit realtek nics using r8169 and that's not having issues on `7.0.14-20-pve`

 

[Stoiko Ivanov]

We built a test-kernel with bnxt_en changes reverted - see:

Post in thread 'Proxmox VE 9.2.21 - BCM57412 bnxt_en network failure after upgrade to kernel 7.0.14-20-pve'

Friday at 15:12

we uploaded a kernel with the changes for bnxt between 7.0.14-19-pve and 7.0.14-20-pve reverted:
http://download.proxmox.com/temp/kernel-7.0.14-22~test-bnxt-revert1/

It would be great if people experiencing the issues with bnxt_en nics could test this kernel - as it would help us in narrowing down the issue!

Additionally (and especially if this kernel still causes issues) - testing the mainline kernel builds from Ubuntu would be appreciated:
https://kernel.ubuntu.com/mainline/
(the latest 7.2 is probably best)
keep in mind that mainline builds by Ubuntu don't ship ZFS - so...

• Stoiko Ivanov

for more details

We'd appreciate feedback if it resolves the issue
Thanks!

 

[FingerlessGloves]

We built a test-kernel with bnxt_en changes reverted - see:

Post in thread 'Proxmox VE 9.2.21 - BCM57412 bnxt_en network failure after upgrade to kernel 7.0.14-20-pve'

Friday at 15:12

we uploaded a kernel with the changes for bnxt between 7.0.14-19-pve and 7.0.14-20-pve reverted:
http://download.proxmox.com/temp/kernel-7.0.14-22~test-bnxt-revert1/

It would be great if people experiencing the issues with bnxt_en nics could test this kernel - as it would help us in narrowing down the issue!

Additionally (and especially if this kernel still causes issues) - testing the mainline kernel builds from Ubuntu would be appreciated:
https://kernel.ubuntu.com/mainline/
(the latest 7.2 is probably best)
keep in mind that mainline builds by Ubuntu don't ship ZFS - so...

• Stoiko Ivanov

for more details

We'd appreciate feedback if it resolves the issue
Thanks!

Hi, do you have a signed `pve-signed` version, I only see a template deb file in there

 

[Stoiko Ivanov]

Hi, do you have a signed `pve-signed` version, I only see a template deb file in there

No - we don't sign such test-kernels - the kernel package is http://download.proxmox.com/temp/ke...-22-pve_7.0.14-22~test-bnxt-revert1_amd64.deb

which contains everything, but is not signed and will not work if you have secure-boot enabled (but works if you don't have secure-boot enabled)

 

[FingerlessGloves]

No - we don't sign such test-kernels - the kernel package is http://download.proxmox.com/temp/ke...-22-pve_7.0.14-22~test-bnxt-revert1_amd64.deb

which contains everything, but is not signed and will not work if you have secure-boot enabled (but works if you don't have secure-boot enabled)

Hi, ah I've got SecureBoot enabled for obvious reasons. I'll see what I can do

 

[FingerlessGloves]

We built a test-kernel with bnxt_en changes reverted - see:

Post in thread 'Proxmox VE 9.2.21 - BCM57412 bnxt_en network failure after upgrade to kernel 7.0.14-20-pve'

Friday at 15:12

we uploaded a kernel with the changes for bnxt between 7.0.14-19-pve and 7.0.14-20-pve reverted:
http://download.proxmox.com/temp/kernel-7.0.14-22~test-bnxt-revert1/

It would be great if people experiencing the issues with bnxt_en nics could test this kernel - as it would help us in narrowing down the issue!

Additionally (and especially if this kernel still causes issues) - testing the mainline kernel builds from Ubuntu would be appreciated:
https://kernel.ubuntu.com/mainline/
(the latest 7.2 is probably best)
keep in mind that mainline builds by Ubuntu don't ship ZFS - so...

• Stoiko Ivanov

for more details

We'd appreciate feedback if it resolves the issue
Thanks!

Same is happening on Kernel 7.0.14-22