Re: zram: lockdep spew for zram->init_lock

2014-03-03 Thread Sergey Senozhatsky
Hello, On (03/03/14 07:30), Minchan Kim wrote: > Hello Andrew, > > I'm not in office now and I would be off in this week, maybe > so I don't have source code on top of Sergey's recent change > but it seems below code has same problem. > > Pz, Sergey or Jerome Could you confirm it instead of me?

Re: zram: lockdep spew for zram-init_lock

2014-03-03 Thread Sergey Senozhatsky
Hello, On (03/03/14 07:30), Minchan Kim wrote: Hello Andrew, I'm not in office now and I would be off in this week, maybe so I don't have source code on top of Sergey's recent change but it seems below code has same problem. Pz, Sergey or Jerome Could you confirm it instead of me? On

Re: zram: lockdep spew for zram->init_lock

2014-03-02 Thread Minchan Kim
Hello Andrew, I'm not in office now and I would be off in this week, maybe so I don't have source code on top of Sergey's recent change but it seems below code has same problem. Pz, Sergey or Jerome Could you confirm it instead of me? On Fri, Feb 28, 2014 at 04:32:06PM -0800, Andrew Morton

Re: zram: lockdep spew for zram-init_lock

2014-03-02 Thread Minchan Kim
Hello Andrew, I'm not in office now and I would be off in this week, maybe so I don't have source code on top of Sergey's recent change but it seems below code has same problem. Pz, Sergey or Jerome Could you confirm it instead of me? On Fri, Feb 28, 2014 at 04:32:06PM -0800, Andrew Morton

Re: zram: lockdep spew for zram->init_lock

2014-03-01 Thread Sergey Senozhatsky
On (02/28/14 16:32), Andrew Morton wrote: > Date: Fri, 28 Feb 2014 16:32:06 -0800 > From: Andrew Morton > To: Minchan Kim > Cc: Sasha Levin , ngu...@vflare.org, LKML > , Sergey Senozhatsky > > Subject: Re: zram: lockdep spew for zram->init_lock > X-Mailer: Sylphe

Re: zram: lockdep spew for zram-init_lock

2014-03-01 Thread Sergey Senozhatsky
...@gmail.com Subject: Re: zram: lockdep spew for zram-init_lock X-Mailer: Sylpheed 3.2.0beta5 (GTK+ 2.24.10; x86_64-pc-linux-gnu) On Fri, 28 Feb 2014 08:56:29 +0900 Minchan Kim minc...@kernel.org wrote: Sasha reported following below lockdep spew of zram. It was introduced by [1

Re: zram: lockdep spew for zram->init_lock

2014-02-28 Thread Andrew Morton
On Fri, 28 Feb 2014 08:56:29 +0900 Minchan Kim wrote: > Sasha reported following below lockdep spew of zram. > > It was introduced by [1] in recent linux-next but it's false positive > because zram_meta_alloc with down_write(init_lock) couldn't be called > during zram is working as swap device

Re: zram: lockdep spew for zram-init_lock

2014-02-28 Thread Andrew Morton
On Fri, 28 Feb 2014 08:56:29 +0900 Minchan Kim minc...@kernel.org wrote: Sasha reported following below lockdep spew of zram. It was introduced by [1] in recent linux-next but it's false positive because zram_meta_alloc with down_write(init_lock) couldn't be called during zram is working as

Re: zram: lockdep spew for zram->init_lock

2014-02-27 Thread Minchan Kim
562569f46ae460763 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Fri, 28 Feb 2014 08:39:21 +0900 Subject: [PATCH] zram: prevent lockdep spew of init_lock Sasha reported following below lockdep spew of zram. It was introduced by [1] in recent linux-next but it's false positive because zram_me

zram: lockdep spew for zram->init_lock

2014-02-27 Thread Sasha Levin
Hi all, I've stumbled on the following spew while fuzzing with trinity inside a KVM tools guest running latest -next. It looks like a false positive (we only set size for uninitialized devices, so we can't deadlock on them being in-use) but I'd really like someone to confirm it before I write

zram: lockdep spew for zram-init_lock

2014-02-27 Thread Sasha Levin
Hi all, I've stumbled on the following spew while fuzzing with trinity inside a KVM tools guest running latest -next. It looks like a false positive (we only set size for uninitialized devices, so we can't deadlock on them being in-use) but I'd really like someone to confirm it before I write

Re: zram: lockdep spew for zram-init_lock

2014-02-27 Thread Minchan Kim
From: Minchan Kim minc...@kernel.org Date: Fri, 28 Feb 2014 08:39:21 +0900 Subject: [PATCH] zram: prevent lockdep spew of init_lock Sasha reported following below lockdep spew of zram. It was introduced by [1] in recent linux-next but it's false positive because zram_meta_alloc with down_write