On 5/25/21 3:48 PM, Olivier Langlois wrote: > On Tue, 2021-05-25 at 17:26 -0400, Olivier Langlois wrote: >> but the pointers should be hashed by trace. >> >> That would be nice if someone more knowledgeable about the tracing >> system could jump in and comment about the hash-ptr option and tell >> when it is applied and when it is not... > > My concern about hashing pointers directly in the io_uring code > directly. It is that by doing so will make it impossible for a > sufficiently priviledged user to get the raw pointer values without > reverting back the pointer hashing stuff. > > that would not be the right way to address the security concern if the > tracing subsystem already hash them by default and is configurable to > display raw pointers if desired. > > My issue is that I haven't been able to see hashed pointers output from > trace. Just a quick guess, but does it rely on using %p to print the pointers? -- Jens Axboe
