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Unintentionally messed up @vbabka 's tree tree by doing last-minute reviews :(
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@hyeyoo haha don't worry it's my fault, I have broken your patch by a stupid cleanup, you told me about it, I've fixed it up on the laptop but the broken version stayed on my desktop.
I've now also realized why git diff @{u} didn't show that I'm pushing unintended changes.
Because I didn't even fetch the remote first.

git hard, me dumb

*SHRIEK*

🎶I've pushed the sheriff
but I didn't fetch the deputy🎶

*brachiates into the fields to frolick there joyously*
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@vbabka @hyeyoo got to confess i'm always a little bit suspicious when a mm/ person says "my fault" tbh *shriek* *shriek* 🐔

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@hyeyoo that said, my git ineptitude probably doesn't explain the "sysfs: cannot create duplicate filename '/kernel/slab/:a-0000176'" messages, only the fallout from them. Wonder what's going on there.
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@vbabka Is that caused only after applying the patch? Or has it been like that before?
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@hyeyoo oh right, it's probably also because of the bug too. When we return -EINVAL from do_kmem_cache_create() because of the bug, the sysfs directory stays, so another attempt with the same size+attributes results in a duplicate
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@lkundrak @vbabka @hyeyoo Faults don't have owners. Should be "my userfaultfd"
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@liskin @lkundrak @hyeyoo no that one can't be my (or yours) as it ends with a "d", so it's inevitably systemd-userfaultfd
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