Re: INFO: task hung in wb_shutdown (2)

2018-05-03 Thread Jens Axboe
On 5/1/18 4:14 PM, Tetsuo Handa wrote: >>From 1b90d7f71d60e743c69cdff3ba41edd1f9f86f93 Mon Sep 17 00:00:00 2001 > From: Tetsuo Handa > Date: Wed, 2 May 2018 07:07:55 +0900 > Subject: [PATCH v2] bdi: wake up concurrent wb_shutdown() callers. > > syzbot is

Re: INFO: task hung in wb_shutdown (2)

2018-05-03 Thread Jan Kara
On Wed 02-05-18 07:14:51, Tetsuo Handa wrote: > >From 1b90d7f71d60e743c69cdff3ba41edd1f9f86f93 Mon Sep 17 00:00:00 2001 > From: Tetsuo Handa > Date: Wed, 2 May 2018 07:07:55 +0900 > Subject: [PATCH v2] bdi: wake up concurrent wb_shutdown() callers. > > syzbot

Re: INFO: task hung in wb_shutdown (2)

2018-05-01 Thread Tetsuo Handa
>From 1b90d7f71d60e743c69cdff3ba41edd1f9f86f93 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Wed, 2 May 2018 07:07:55 +0900 Subject: [PATCH v2] bdi: wake up concurrent wb_shutdown() callers. syzbot is reporting hung tasks at wait_on_bit(WB_shutting_down)

Re: INFO: task hung in wb_shutdown (2)

2018-05-01 Thread Jens Axboe
On 5/1/18 10:06 AM, Linus Torvalds wrote: > On Tue, May 1, 2018 at 3:27 AM Tetsuo Handa < > penguin-ker...@i-love.sakura.ne.jp> wrote: > >> Can you review this patch? syzbot has hit this bug for nearly 4000 times > but >> is still unable to find a reproducer. Therefore, the only way to test >

Re: INFO: task hung in wb_shutdown (2)

2018-05-01 Thread Jens Axboe
On 5/1/18 4:27 AM, Tetsuo Handa wrote: > Tejun, Jan, Jens, > > Can you review this patch? syzbot has hit this bug for nearly 4000 times but > is still unable to find a reproducer. Therefore, the only way to test would be > to apply this patch upstream and test whether the problem is solved. I'll

Re: INFO: task hung in wb_shutdown (2)

2018-05-01 Thread Linus Torvalds
On Tue, May 1, 2018 at 3:27 AM Tetsuo Handa < penguin-ker...@i-love.sakura.ne.jp> wrote: > Can you review this patch? syzbot has hit this bug for nearly 4000 times but > is still unable to find a reproducer. Therefore, the only way to test would be > to apply this patch upstream and test whether

Re: INFO: task hung in wb_shutdown (2)

2018-05-01 Thread Tetsuo Handa
Tejun, Jan, Jens, Can you review this patch? syzbot has hit this bug for nearly 4000 times but is still unable to find a reproducer. Therefore, the only way to test would be to apply this patch upstream and test whether the problem is solved. On 2018/04/24 21:19, Tetsuo Handa wrote: >>From