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Date: Mon, 21 Mar 2011 09:18:33 +0300 From: Alexander Beregalov <a.beregalov@...il.com> To: Al Viro <viro@...iv.linux.org.uk> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: 2.6.39-rc0: umount tmpfs hangs On 21 March 2011 08:54, Al Viro <viro@...iv.linux.org.uk> wrote: > On Mon, Mar 21, 2011 at 08:30:23AM +0300, Alexander Beregalov wrote: > >> > rcu_barrier() hanging for some reason... ??I really wonder what's going >> > on there - missing rcu_read_unlock()? ??Could you try to reproduce that >> > sucker and, if possible, bisect it? >> >> Yes, it's reproducible, but I'm bisecting another issue and have few >> more such issues with the current kernel. > > Could you post the reproducer? Simple mounting tmpfs and umount explicitly > doesn't seem to trigger it; doing some IO on that fs doesn't change that, > ditto for umount done by shutdown instead of doing it manually... For me it is just shutting down. While bisecting another issue I found this range for bisection: ceda86a108671294052cbf51660097b6534672f5 good 7a6362800cb7d1d618a697a650c7aaed3eb39320 bad but only if the bug is 100% reproducible with my test, I can't be sure yet. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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