Messages in this thread | | | From | Linus Torvalds <> | Date | Thu, 16 Dec 2021 08:27:50 -0800 | Subject | Re: [PATCH v3 57/68] afs: Fix afs_write_end() to handle len > page size |
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On Thu, Dec 16, 2021 at 8:22 AM David Howells <dhowells@redhat.com> wrote: > > It is possible for the len argument to afs_write_end() to overrun the end > of the page (len is used to key the size of the page in afs_write_start() > when compound pages become a regular thing).
This smells like a bug in the caller.
It's just insane to call "write_end()" with a range that doesn't actually fit in the page provided.
Exactly how does that happen, and why should AFS deal with it, not whoever called write_end()?
Linus
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