Messages in this thread | | | Date | Wed, 9 Jul 2014 15:59:39 -0700 | From | Andrew Morton <> | Subject | Re: fs: use after free in /proc/pid/mountinfo |
| |
On Wed, 09 Jul 2014 18:10:47 -0400 Sasha Levin <sasha.levin@oracle.com> wrote:
> On 07/09/2014 04:31 PM, Andrew Morton wrote: > > On Wed, 9 Jul 2014 16:24:06 +0200 Heiko Carstens <heiko.carstens@de.ibm.com> wrote: > > > >> > 058504edd026 ("fs/seq_file: fallback to vmalloc allocation") is suspected to > >> > cause a crash. Actually I can't reprocude the crash nor would I be able to > >> > tell how the commit could cause the crash. > >> > Anyway, I'll be offline for the next 2.5 weeks. So if Sasha could confirm > >> > that reverting the patch actually does fix the crash, please revert the > >> > commit, unless somebody else can make sense of the report of course. > >> > > >> > I'm still wondering how Sasha could reproduce the crash. > > This really sucks :( > > > > I suppose I'll queue up a revert of 058504edd026 as a for-3.16 bandaid. > > > > Sasha, it would be great if you could delve a bit further into this, > > see if we can identify a way for others to reproduce the bug. > > > > Did you test that little patchlet which Heiko sent? > > I've been trying, but as there isn't an easy way to reproduce it, breakage > elsewhere in -next (there is a long list) is slowing me down. I'll revert > back to the -next where I've initially observed this issue and will retry. >
Thanks. The bug should be present in current mainline.
| |