Hey folks, following up on old patches, are there any comments on this? Did you get around to finding a better way to fix this bug, Al?
Cheers, peter On Mon, Aug 20, 2012 at 10:19 AM, Peter Moody <[email protected]> wrote: > Hi Al, > > Any word on a less unpleasant fix? Also, do you know if/how I could > measure the impact of the cacheline bouncing? I haven't been able to > notice anything anecdotally on the machine running this patch, but I'm > not pushing it incredibly hard. > > Cheers, > peter > > On Wed, Aug 15, 2012 at 6:41 PM, Peter Moody <[email protected]> wrote: >> On Wed, Aug 15, 2012 at 6:26 PM, Alexander Viro <[email protected]> wrote: >>> On Wed, Aug 15, 2012 at 06:13:33PM -0700, Peter Moody wrote: >>>> On certain systems, in certain pathalogical cases, current's cwd can >>>> be deleted while we're still processing a syscall. This should prevent >>>> the system from evicting the inode while we're still referencing it. >>>> >>>> This seems to fix the bug I reported here: >>>> https://www.redhat.com/archives/linux-audit/2012-August/msg00017.html >>> >>> Sigh... The bug is real, but I really don't like the fix. Among other >>> things, it's going to cause cacheline bouncing from hell and not everyone >>> runs with audit sensibly disabled... Let me think for a while and see >>> if I can come up with something less unpleasant, OK? >> >> Works for me. I have a set of machines that I can very easily test a fix on. >> >> Cheers, >> peter >> >> -- >> Peter Moody Google 1.650.253.7306 >> Security Engineer pgp:0xC3410038 > > > > -- > Peter Moody Google 1.650.253.7306 > Security Engineer pgp:0xC3410038 -- Peter Moody Google 1.650.253.7306 Security Engineer pgp:0xC3410038 -- Linux-audit mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-audit
