On Wed, 11 Feb 2026 10:46:23 -0500 Steven Rostedt <[email protected]> wrote:
> On Tue, 10 Feb 2026 17:43:51 +0900 > "Masami Hiramatsu (Google)" <[email protected]> wrote: > > > From: Masami Hiramatsu (Google) <[email protected]> > > > > Strictly checking the file read/write permission even if the owner has > > CAP_DAC_OVERRIDE on tracefs as same as sysfs. > > Tracefs is a pseudo filesystem, just like sysfs, so any file that the > > system defines as unwritable should actually be unwritable by anyone. > > This is getting too complex and still doesn't work. As I said in my > other email, simply check for the trace_array being readonly on opens() > and return -EACCES if it is and was opened for write or read-write. yeah, I understand I confused "permission" and "possibility". > > With this still not working this late in the game, it will need to wait > until the next merge window. I'll take the first two patches of this > series now though. OK. I will send the next version without the first 2 patches. Thank you, > > -- Steve > -- Masami Hiramatsu (Google) <[email protected]>
