On Sat, Sep 23, 2017 at 10:35:45PM -0400, Meng Xu wrote:
> Hi Jaharkes and Coda filesystem developers,
>
> I am resending the email on a potential race condition bug I found in the
> Coda filesystem as well as the patch I propose. Please feel free to comment
> whether you think this is a serious p
Hi Jaharkes and Coda filesystem developers,
I am resending the email on a potential race condition bug I found in the
Coda filesystem as well as the patch I propose. Please feel free to comment
whether you think this is a serious problem and whether the patch will work.
Thank you.
Best Regards,
M
In coda_psdev_write(), the header of the buffer is fetched twice from the
userspace. The first fetch is used to peek at the opcode and unique id while
the second fetch copies the whole message. However, there could be
inconsistency in these two fields between two fetches as buf resides in
userspace
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