Messages in this thread | | | Date | Wed, 22 Jan 2014 13:49:26 -0800 (PST) | From | David Rientjes <> | Subject | Re: Slab corruption in fanotify_free_event() |
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On Wed, 22 Jan 2014, Jiri Kosina wrote:
> Hi, > > booting current Linus' tree (df32e43a), I am getting > > Slab corruption (Not tainted): fanotify_event_info start=ffff8800372e3320, len=64 > Redzone: 0x9f911029d74e35b/0x9f911029d74e35b. > Last user: [<ffffffff811e0bdd>](fanotify_free_event+0x2d/0x40) > 030: 6b 6b 6b 6b 6b 6b 6b 6b 00 00 00 00 6b 6b 6b a5 kkkkkkkk....kkk. > Prev obj: start=ffff8800372e32c8, len=64 > Redzone: 0x9f911029d74e35b/0x9f911029d74e35b. > Last user: [<ffffffff811e0bdd>](fanotify_free_event+0x2d/0x40) > 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Next obj: start=ffff8800372e3378, len=64 > Redzone: 0x9f911029d74e35b/0x9f911029d74e35b. > Last user: [<ffffffff811e0bdd>](fanotify_free_event+0x2d/0x40) > 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > > I guess this is due to > > commit 7053aee26a3548ebaba046ae2e52396ccf56ac6c > Author: Jan Kara <jack@suse.cz> > Date: Tue Jan 21 15:48:14 2014 -0800 > > fsnotify: do not share events between notification groups > > as I am not able to see any other recent changes in that area. Haven't > been looking at the patch closely enough to debug this yet ... sending > this as an early heads-up. >
Dave Jones reports slab poison values getting overwritten and bisected it to the same commit. The discussion is at http://marc.info/?t=139037220800006.
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