Hi,
Since Linux 6.6.3, I see some warnings in the late phase of shutdown.
Unfortunately, they are not logged because syslog has already shut down
at that point.
I used a camera to capture a small part of the warnings:
No atomic I2C transfer handler for 'i2c-0'
[trace follows]
i2c_smbus_xfer
[...]
After checking the changelog, the culprit was found quickly:
(3473cf43b) i2c: core: Run atomic i2c xfer when !preemptible
Reverting that commit made the warnings go away.
This is a voluntary preemption kernel running on a Skylake laptop.
Please tell me if you need more info.
Cheers,
Tor
