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SubjectRe: [PATCH 05/13] fs: check FMODE_WRITE in __kernel_write
On Mon, Jun 15, 2020 at 5:13 AM Christoph Hellwig <hch@lst.de> wrote:
>
> We still need to check if the fѕ is open write, even for the low-level
> helper.

Is there actually a way to trigger something like this? I'm wondering
if it's worth a WARN_ON_ONCE()?

It doesn't sound sensible to have some kernel functionality try to
write to a file it didn't open for write, and sounds like a kernel bug
if this case were to ever trigger..

Linus

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