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slaterson
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Joined: 26 Feb 2003
Posts: 313
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 Posted: Thu Feb 03, 2022 12:47 am Post subject: [solved] dota 2 stopped working |
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after an update to dota 2 yesterday, it stopped working. i get this message in the console
| Code: | | bwrap: No permissions to creating new namespace, likely because the kernel does not allow non-privileged user namespaces. On e.g. debian this can be enabled with 'sysctl kernel.unprivileged_userns_clone=1'. |
and of course
| Code: | | sysctl kernel.unprivileged_userns_clone=1 |
doesn't work.
| Code: | sysctl kernel.unprivileged_userns_clone=1
sysctl: cannot stat /proc/sys/kernel/unprivileged_userns_clone: No such file or directory |
user namespaces are enabled in my kernel. how do i enable unprivileged_userns_clone on gentoo to see if that fixes my problem?
this is happening on two boxes where i run steam & dota 2.
Last edited by slaterson on Thu Feb 03, 2022 3:37 am; edited 1 time in total |
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grknight
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slaterson
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Joined: 26 Feb 2003
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| Posted: Thu Feb 03, 2022 1:52 am Post subject: |
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is there a different way to enable this is gentoo, or is it something that the kernel enables by default and debian allows it to be turned on/off? i don't want to get into patching the kernel manually, too much maintenance.
is this possibly a library or executable that is part of the steam install that i could replace with the native gentoo library/executable?
and thanks for the quick reply! |
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Hu
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Joined: 06 Mar 2007
Posts: 21835
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| Posted: Thu Feb 03, 2022 2:37 am Post subject: |
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From the same shell where that fails, can you manually unshare a user namespace? If not, what error is shown?
Exactly what options is bwrap using when it tries to set up the user namespace? |
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slaterson
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Joined: 26 Feb 2003
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| Posted: Thu Feb 03, 2022 3:32 am Post subject: |
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not sure i am doing this correctly, here is my attempt
| Code: | $ unshare -U
unshare: unshare failed: Operation not permitted
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obviously something wrong.
i'm not sure what options bwrap is using as this is run by dota 2 and after searching through a trail of start up scripts, bwrap isn't being called by any of them that i can find. |
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slaterson
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Joined: 26 Feb 2003
Posts: 313
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| Posted: Thu Feb 03, 2022 3:37 am Post subject: |
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marking this as solved.
in a recent dota 2 update (couple days ago) a bunch of steam play stuff was automatically downloaded and installed. after searching the interwebs, i discovered there was an option to use steam play, which made me suspicious. i found the option in the steam client and disabled it on both boxes, restarted steam, and dota 2 works again. |
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slaterson
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Joined: 26 Feb 2003
Posts: 313
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| Posted: Thu Feb 03, 2022 3:48 am Post subject: |
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| also, thanks for the questions and suggestions. while it didn't directly fix anything, it prompted additional thinking and searching which ultimately did solve the problem. |
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Hu
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| Posted: Thu Feb 03, 2022 4:23 am Post subject: |
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| Odd. For me, unshare -U starts a new user namespace with no user mappings. It does not fail. |
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slaterson
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Joined: 26 Feb 2003
Posts: 313
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| Posted: Thu Feb 03, 2022 5:14 am Post subject: |
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| Hu wrote: | | Odd. For me, unshare -U starts a new user namespace with no user mappings. It does not fail. |
my steam install is in a chroot. interestingly, unshare -U works from outside the chroot. not sure what the difference is or what to check. |
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Hu
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| Posted: Thu Feb 03, 2022 4:50 pm Post subject: |
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| You cannot create a user namespace while in a chroot relative to your mount namespace. This appears to have been blocked at least since 2013. See kernel/user_namespace.c function create_user_ns with its call to current_chrooted: |
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slaterson
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Joined: 26 Feb 2003
Posts: 313
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| Posted: Thu Feb 03, 2022 6:19 pm Post subject: |
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| alrighty then. seems if i really want to make this work i'll need to get steam running outisde the chroot. thats something for another day... |
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