Messages in this thread | | | From | David Laight <> | Subject | RE: [PATCH v2] tracing: Add test for user space strings when filtering on string pointers | Date | Fri, 14 Jan 2022 09:35:08 +0000 |
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From: Steven Rostedt > Sent: 14 January 2022 02:15 > > On Thu, 13 Jan 2022 16:51:15 -0500 > Steven Rostedt <rostedt@goodmis.org> wrote: > > > We could add something later. As it is currently the merge window, and this > > is a real bug, I'm going to just leave it as is, and we can work to fix the > > other archs later. I need to get a pull request ready by tomorrow. > > Actually I got this working, and looks like a reasonable answer to the > problem. It basically requires that the user specify that the pointer > points into user space for the kernel to read it.
Certainly look better.
I'm not sure about the difference between the _inatomic() and _nocheck() user access functions though.
David
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