Running grep on root with a USB drive inserted causes a panic

[eliasbakken]

Running grep -r "test-test" / for instance causes a complete freeze.

[eliasbakken]

It seems having the USB drive with Refactor installed causes some instability and seems to also cause a freeze during booting. It might be related to the double mounting in /etc/fstab

[goeland86]

Hmm. In that case we should really be doing a uuid based fstab, and use a command street dd to change the uuid of the emmc partitions. Or the other way around, changing the USB drive's.

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On Fri, Apr 21, 2023, 01:42 Elias Bakken ***@***.***> wrote: It seems having the USB drive with Refactor installed causes some instability and seems to also cause a freeze during booting. It might be related to the double mounting in /etc/fstab — Reply to this email directly, view it on GitHub <#364 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEEI46P2RAHFTHMHV47ZPDDXCHCVVANCNFSM6AAAAAAW7ALR4M> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[eliasbakken]

I'm getting an error message musb-sunxi 1c19000.usb: Error unknown readw offset 0 and repeated several times before the freeze.

[eliasbakken]

Upgrading to kernel 6.1 and running cat /sys/kernel/debug/usb/musb-hdrc.4.auto/regdump produces the Error unknown readw offset issue.
It seems that doing anything with /sys/kernel/debug/psci can also lead to a crash.

[goeland86]

Uh... The values in the debug may need to be read by special utils or when the kernel is booted with debug arguments? Otherwise, yeah, i can see you could cause crashes with that, especially if you're trying to access values that are otherwise restricted because of security features that are enabled by default?

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On Mon, Apr 24, 2023 at 9:43 PM Elias Bakken ***@***.***> wrote: Upgrading to kernel 6.1 and running cat /sys/kernel/debug/usb/musb-hdrc.4.auto/regdump produces the Error unknown readw offset issue. It seems that doing anything with /sys/kernel/debug/psci can also lead to a crash. — Reply to this email directly, view it on GitHub <#364 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEEI46LKH4QTP2B4EMH74MLXC3JXLANCNFSM6AAAAAAW7ALR4M> . You are receiving this because you commented.Message ID: ***@***.***>

[eliasbakken]

I think it should be possible to run a grep on the entire filesystem without causing a crash, but it's not a showstopper really. I will close this for now as "wontfix". It's an embedded system, most people will never access via ssh anyway.