Re: NFSroot hangs with bad unlock balance in Linux next

2016-05-09 Thread Tony Lindgren
* Al Viro [160509 08:41]: > On Mon, May 09, 2016 at 08:21:38AM -0700, Tony Lindgren wrote: > > > Looks like with both patches applied I still also get this eventually: > > > > = > > [ BUG: bad unlock balance detected! ] > > 4.6.0-rc7-next-20160509+ #1264 Not t

Re: NFSroot hangs with bad unlock balance in Linux next

2016-05-09 Thread Al Viro
On Mon, May 09, 2016 at 08:21:38AM -0700, Tony Lindgren wrote: > Looks like with both patches applied I still also get this eventually: > > = > [ BUG: bad unlock balance detected! ] > 4.6.0-rc7-next-20160509+ #1264 Not tainted >

Re: NFSroot hangs with bad unlock balance in Linux next

2016-05-09 Thread Tony Lindgren
* Tony Lindgren [160509 08:15]: > * Eric Dumazet [160509 07:16]: > > On Mon, May 9, 2016 at 12:32 AM, Al Viro wrote: > > > On Sun, May 08, 2016 at 03:16:29PM +0100, Al Viro wrote: > > > > > >> Very strange. We grab that rwsem at the entry into nfs_call_unlink() > > >> and then either release it

Re: NFSroot hangs with bad unlock balance in Linux next

2016-05-09 Thread Tony Lindgren
* Eric Dumazet [160509 07:16]: > On Mon, May 9, 2016 at 12:32 AM, Al Viro wrote: > > On Sun, May 08, 2016 at 03:16:29PM +0100, Al Viro wrote: > > > >> Very strange. We grab that rwsem at the entry into nfs_call_unlink() > >> and then either release it there and return or call nfs_do_call_unlink(

Re: NFSroot hangs with bad unlock balance in Linux next

2016-05-09 Thread Eric Dumazet
On Mon, May 9, 2016 at 12:32 AM, Al Viro wrote: > On Sun, May 08, 2016 at 03:16:29PM +0100, Al Viro wrote: > >> Very strange. We grab that rwsem at the entry into nfs_call_unlink() >> and then either release it there and return or call nfs_do_call_unlink(). >> Which arranges for eventual call of