Re: [PATCH] bdi: Fix another oops in wb_workfn()

2018-06-11 Thread Tejun Heo
Hello, On Mon, Jun 11, 2018 at 11:12:48AM +0200, Jan Kara wrote: > However this is wrong and so is the patch. The problem is in > cgwb_bdi_unregister() which does cgwb_kill() and thus drops bdi's > reference to wb structures before going through the list of wbs again and > calling wb_shutdown()

Re: [PATCH] bdi: Fix another oops in wb_workfn()

2018-06-11 Thread Tejun Heo
Hello, On Mon, Jun 11, 2018 at 11:12:48AM +0200, Jan Kara wrote: > However this is wrong and so is the patch. The problem is in > cgwb_bdi_unregister() which does cgwb_kill() and thus drops bdi's > reference to wb structures before going through the list of wbs again and > calling wb_shutdown()

Re: [PATCH] bdi: Fix another oops in wb_workfn()

2018-06-11 Thread Jan Kara
On Sat 09-06-18 23:00:05, Tetsuo Handa wrote: > From 014c4149f2e24cd26b278b32d5dfda056eecf093 Mon Sep 17 00:00:00 2001 > From: Tetsuo Handa > Date: Sat, 9 Jun 2018 22:47:52 +0900 > Subject: [PATCH] bdi: Fix another oops in wb_workfn() > > syzbot is reporting NULL pointer derefe

Re: [PATCH] bdi: Fix another oops in wb_workfn()

2018-06-11 Thread Jan Kara
On Sat 09-06-18 23:00:05, Tetsuo Handa wrote: > From 014c4149f2e24cd26b278b32d5dfda056eecf093 Mon Sep 17 00:00:00 2001 > From: Tetsuo Handa > Date: Sat, 9 Jun 2018 22:47:52 +0900 > Subject: [PATCH] bdi: Fix another oops in wb_workfn() > > syzbot is reporting NULL pointer derefe

Re: [PATCH] bdi: Fix another oops in wb_workfn()

2018-05-26 Thread Tejun Heo
On Sun, May 27, 2018 at 11:21:25AM +0900, Tetsuo Handa wrote: > From 8a8222698163d1fe180258566e9a3ff43f54fcd9 Mon Sep 17 00:00:00 2001 > From: Tetsuo Handa <penguin-ker...@i-love.sakura.ne.jp> > Date: Sun, 27 May 2018 11:08:20 +0900 > Subject: [PATCH] bdi: Fix another

Re: [PATCH] bdi: Fix another oops in wb_workfn()

2018-05-26 Thread Tejun Heo
On Sun, May 27, 2018 at 11:21:25AM +0900, Tetsuo Handa wrote: > From 8a8222698163d1fe180258566e9a3ff43f54fcd9 Mon Sep 17 00:00:00 2001 > From: Tetsuo Handa > Date: Sun, 27 May 2018 11:08:20 +0900 > Subject: [PATCH] bdi: Fix another oops in wb_workfn() > > syzbot is still hi

[PATCH] bdi: Fix another oops in wb_workfn()

2018-05-26 Thread Tetsuo Handa
>From 8a8222698163d1fe180258566e9a3ff43f54fcd9 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa <penguin-ker...@i-love.sakura.ne.jp> Date: Sun, 27 May 2018 11:08:20 +0900 Subject: [PATCH] bdi: Fix another oops in wb_workfn() syzbot is still hitting NULL pointer dereference at wb_wo

[PATCH] bdi: Fix another oops in wb_workfn()

2018-05-26 Thread Tetsuo Handa
>From 8a8222698163d1fe180258566e9a3ff43f54fcd9 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Sun, 27 May 2018 11:08:20 +0900 Subject: [PATCH] bdi: Fix another oops in wb_workfn() syzbot is still hitting NULL pointer dereference at wb_workfn() [1]. This might be because we overloo