On Wed, Jan 31, 2007 at 11:54:35AM +0100, Duncan Sands wrote: > Can read_proc still be executing when remove_proc_entry returns? > > In my driver [*] I allocate some data and create a proc entry using > create_proc_entry. My read method reads from my allocated data. When > shutting down, I call remove_proc_entry and immediately free the data. > If some call to read_proc is still executing at this point then it will > be accessing freed memory. Can this happen? I've been rummaging around > in fs/proc to see what prevents it, but didn't find anything yet.
This should be fixed by the following patch (in -mm currently): http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20-rc6/2.6.20-rc6-mm3/broken-out/fix-rmmod-read-write-races-in-proc-entries.patch Tell me if you're unsure it will. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
