After update to linux 6.5.5 I observed several crashes during bootup when USB drive connected to USB-C hub. To find out what has been crashed I enabled EFI pstore. Unfortunately there were no crashes after that. However, there are kernel BUG traces in dmesg. After several experiments I found strong correlation between ucsi_acpi driver and the crash. I blacklisted: blacklist typec_ucsi blacklist ucsi_acpi blacklist roles blacklist typec Two dmesgs are in attachment. The messages to search: ucsi_acpi USBC000:00: possible UCSI driver bug 2 ucsi_acpi USBC000:00: error -EINVAL: PPM init failed
Created attachment 305170 [details] dmesg1
Created attachment 305171 [details] dmesg2
(In reply to Oleksii Shevchuk from comment #0) > After update to linux 6.5.5 I observed several crashes during bootup when > USB drive connected to USB-C hub. To find out what has been crashed I > enabled EFI pstore. Unfortunately there were no crashes after that. However, > there are kernel BUG traces in dmesg. After several experiments I found > strong correlation between ucsi_acpi driver and the crash. > > I blacklisted: > blacklist typec_ucsi > blacklist ucsi_acpi > blacklist roles > blacklist typec > > Two dmesgs are in attachment. > > The messages to search: > ucsi_acpi USBC000:00: possible UCSI driver bug 2 > ucsi_acpi USBC000:00: error -EINVAL: PPM init failed Do you have this issue on v6.4?
No. Here is dmesg from 6.4.3 without blacklists
Created attachment 305172 [details] dmesg 6.4.3
On 01/10/2023 21:25, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=217960 > > --- Comment #4 from Oleksii Shevchuk (alxchk@gmail.com) --- > No. Here is dmesg from 6.4.3 without blacklists > Then please bisect (see Documentation/admin-guide/bug-bisect.rst for instructions).