Messages in this thread | | | Date | Wed, 9 May 2012 12:44:46 +0200 | From | Jan Kara <> | Subject | Re: BUG on fs/inode.c:1442 (linux 3.3.1 and 3.3.2) |
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On Sun 06-05-12 14:31:00, Lluís Batlle i Rossell wrote: > On Wed, Apr 18, 2012 at 01:48:44PM +0200, Jan Kara wrote: > > Hello, > > > > On Sun 15-04-12 23:56:01, Lluís Batlle i Rossell wrote: > > > destroying my openvpn client connection (SIGINT to openvp), in linux 3.3.1 and > > > now also in 3.3.2, I noticed this BUG in dmesg (attached). > > > > > > It's a vanilla 3.3.2, at this shot. > > > > > > I know it never happened to me in any 3.2, but I did not try 3.3.0. > > > > > > I attach the .config. And I have the debug info for this kernel too, if this > > > helps someone find a fix. But I imagine it's easy to reproduce. > > From the first look it would seem as use after free bug but can you > > please post disassembly of iput() function from your kernel? I.e. you load > > vmlinux in gdb and run 'disass iput'. Thanks. > > Sorry for the delay. Here it is, for 3.3.2: Thanks for the disassembly. I was hoping that the contents of inode->i_state would be loaded in some register so we can see what value it has. Sadly that's not the case so I cannot say anything more.
Did the bug happen to you again after the original report?
Honza
-- Jan Kara <jack@suse.cz> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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