Pico W crashes when accessing web workflow interface

[RetiredWizard]

CircuitPython version

Adafruit CircuitPython 8.1.0-alpha.2-16-g60a9c7e5b on 2023-03-22; Raspberry Pi Pico W with rp2040

Code/REPL

No code executed, tested without a code.py

Behavior

During my testing I first dismounted the CIRCUITPY drive and then attempted to access the web workflow URL. on commit 60a9c7e and newer the Pi Pico W would restart as soon as I clicked on the link. If I had an serial console open an OSError: [Errno 11] EAGAIN message was displayed and then the board would restart. Even though the board appeared to restart once the error occurred I was unable to reconnect to the serial port until I power cycled the board.

The build from this commit: 09f84e3 did not seem to have the issue.

Description

No response

Additional information

No response

[jepler]

#7623 introduced a problem that I believe could cause crashes in the web worfklow, but we thought we promptly fixed it in #7632. The ref you are testing at, 60a9c7e, is within the range of commits known to be affected. Can you check whether this problem is still affecting current versions?

[RetiredWizard]

I am seeing the issue on the latest build from circuitpython.org. I am a bit concerned I'm missing something because the commit that the problem seems to start at doesn't make a lot of sense for this type of issue and I'm surprised that no one else has reported this by now. I did try plugging the pico w into both a Windows 8 PC and a Linux box and got the same result. I also connected the Pico to a usb charger so there was no computer involved and confirmed that web workflow didn't work in that case either.

[jepler]

Just to eliminate doubt can you show the boot_out.txt from the "latest version" you're using?

[RetiredWizard]

Adafruit CircuitPython 8.1.0-beta.0-48-gcfedcd411 on 2023-03-22; Raspberry Pi Pico W with rp2040
Board ID:raspberry_pi_pico_w
UID:E6614103E71F6622
MAC:28:CD:C1:00:43:35

It looks like another one just dropped on S3, it also does the same thing for me:

Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.

Press any key to enter the REPL. Use CTRL-D to reload.

Adafruit CircuitPython 8.1.0-beta.0-50-ge1f16472c on 2023-03-22; Raspberry Pi Pico W with rp2040
>>>
OSError: [Errno 11]

[DavePutz]

I am also reproducing this on the latest builds (both downloaded and generated locally). The EAGAIN error (Errno 11) is being raised in socketpool_socket_recv_into() due to the change introduced in PR #7623. However, that identical code is working fine in CP 8.0.4.
Trying to see what other CP 8.1 changes may be affecting this.