BUG in tty_open when using containers and ptrace
root at localdomain.pl
Wed Jul 22 15:25:50 PDT 2009
On wto, lip 21, 2009 at 11:41:20 -0700, Sukadev Bhattiprolu wrote:
> I set
> # CONFIG_SLUB_STATS is not set
> and tried 2.6.29, 2.6.31-rc3 and linux-mmotm from July 13, but have
> not been able to repro either on an i386 machine or on a KVM guest.
> I run your program ./tty-bug in a tight loop. I will try to run the
> program overnight in a loop.
> Given that your program does not depend on NET_NS, can you see if you
> can repro on 2.6.28 and see if we can bisect this problem ?
Immediate crash. I tried 2.6.18-something (Debian etch kernel) that I
had lying around on the VM. The result:
idr_remove called for id=0 which is not allocated.
(on the bright side, the machine is still usable afterwards).
However, 2.6.26 (both mine and Debian) survives the test so it may indeed
be a recent regression (was it broken again after fixing sometime
between .18 and .26?)
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