| To: | Dave Chinner <david@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: splice vs execve lockdep trace. |
| From: | Al Viro <viro@xxxxxxxxxxxxxxxxxx> |
| Date: | Tue, 16 Jul 2013 07:16:02 +0100 |
| Cc: | Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Dave Jones <davej@xxxxxxxxxx>, Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Ben Myers <bpm@xxxxxxx>, xfs@xxxxxxxxxxx |
| Delivered-to: | xfs@xxxxxxxxxxx |
| In-reply-to: | <20130716060351.GE11674@dastard> |
| References: | <20130716015305.GB30569@xxxxxxxxxx> <CA+55aFyLbqJp0-=7=HOF9sKGOHwsa7A7-V76b8tbsnra8Z2=-w@xxxxxxxxxxxxxx> <20130716023847.GA31481@xxxxxxxxxx> <CA+55aFxiGXht8+Dox=C2ezYYf1yMaLAzMYr40j=+peP8j5Ha6w@xxxxxxxxxxxxxx> <20130716060351.GE11674@dastard> |
| Sender: | Al Viro <viro@xxxxxxxxxxxxxxxx> |
| User-agent: | Mutt/1.5.21 (2010-09-15) |
On Tue, Jul 16, 2013 at 04:03:51PM +1000, Dave Chinner wrote: > I posted patches to fix this i_mutex/i_iolock inversion a couple of > years ago (july 2011): > > https://lkml.org/lkml/2011/7/18/4 > > And V2 was posted here and reviewed (aug 2011): > > http://xfs.9218.n7.nabble.com/PATCH-0-2-splice-i-mutex-vs-splice-write-deadlock-V2-tt4072.html#none Unless I'm misreading the patch, you end up doing file_remove_suid() without holding i_mutex at all... |
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