Re: Crashes/hung tasks with z3pool under memory pressure

Hi Vitaly, On Thu, Apr 19, 2018 at 08:18:51AM +, Vitaly Wool wrote: > Hi Guenter, > > Den ons 18 apr. 2018 kl 18:07 skrev Guenter Roeck : > > > On Wed, Apr 18, 2018 at 10:13:17AM +0200, Vitaly Wool wrote: > > > Den tis 17 apr. 2018 kl 18:35 skrev Guenter Roeck

Re: Crashes/hung tasks with z3pool under memory pressure

Hi Vitaly, On Thu, Apr 19, 2018 at 08:18:51AM +, Vitaly Wool wrote: > Hi Guenter, > > Den ons 18 apr. 2018 kl 18:07 skrev Guenter Roeck : > > > On Wed, Apr 18, 2018 at 10:13:17AM +0200, Vitaly Wool wrote: > > > Den tis 17 apr. 2018 kl 18:35 skrev Guenter Roeck : > > > > > > > > > > > > >

Re: Crashes/hung tasks with z3pool under memory pressure

On Wed, Apr 18, 2018 at 10:13:17AM +0200, Vitaly Wool wrote: > Den tis 17 apr. 2018 kl 18:35 skrev Guenter Roeck : > > > > > Getting better; the log is much less noisy. Unfortunately, there are still > > locking problems, resulting in a hung task. I copied the log message to

Re: Crashes/hung tasks with z3pool under memory pressure

On Wed, Apr 18, 2018 at 10:13:17AM +0200, Vitaly Wool wrote: > Den tis 17 apr. 2018 kl 18:35 skrev Guenter Roeck : > > > > > Getting better; the log is much less noisy. Unfortunately, there are still > > locking problems, resulting in a hung task. I copied the log message to [1]. > > This is

Re: Crashes/hung tasks with z3pool under memory pressure

Den tis 17 apr. 2018 kl 18:35 skrev Guenter Roeck : > Getting better; the log is much less noisy. Unfortunately, there are still > locking problems, resulting in a hung task. I copied the log message to [1]. > This is with [2] applied on top of v4.17-rc1. Now this version

Re: Crashes/hung tasks with z3pool under memory pressure

Den tis 17 apr. 2018 kl 18:35 skrev Guenter Roeck : > Getting better; the log is much less noisy. Unfortunately, there are still > locking problems, resulting in a hung task. I copied the log message to [1]. > This is with [2] applied on top of v4.17-rc1. Now this version (this is a full patch

Re: Crashes/hung tasks with z3pool under memory pressure

On Tue, Apr 17, 2018 at 04:00:32PM +0200, Vitaly Wool wrote: > Hi Guenter, > > > [ ... ] > > > Ugh. Could you please keep that patch and apply this on top: > > > > > > diff --git a/mm/z3fold.c b/mm/z3fold.c > > > index c0bca6153b95..e8a80d044d9e 100644 > > > --- a/mm/z3fold.c > > > +++

Re: Crashes/hung tasks with z3pool under memory pressure

On Tue, Apr 17, 2018 at 04:00:32PM +0200, Vitaly Wool wrote: > Hi Guenter, > > > [ ... ] > > > Ugh. Could you please keep that patch and apply this on top: > > > > > > diff --git a/mm/z3fold.c b/mm/z3fold.c > > > index c0bca6153b95..e8a80d044d9e 100644 > > > --- a/mm/z3fold.c > > > +++

Re: Crashes/hung tasks with z3pool under memory pressure

Hi Guenter, > [ ... ] > > Ugh. Could you please keep that patch and apply this on top: > > > > diff --git a/mm/z3fold.c b/mm/z3fold.c > > index c0bca6153b95..e8a80d044d9e 100644 > > --- a/mm/z3fold.c > > +++ b/mm/z3fold.c > > @@ -840,6 +840,7 @@ static int z3fold_reclaim_page(struct z3fold_pool

Re: Crashes/hung tasks with z3pool under memory pressure

Hi Guenter, > [ ... ] > > Ugh. Could you please keep that patch and apply this on top: > > > > diff --git a/mm/z3fold.c b/mm/z3fold.c > > index c0bca6153b95..e8a80d044d9e 100644 > > --- a/mm/z3fold.c > > +++ b/mm/z3fold.c > > @@ -840,6 +840,7 @@ static int z3fold_reclaim_page(struct z3fold_pool

Re: Crashes/hung tasks with z3pool under memory pressure

On Tue, Apr 17, 2018 at 12:14:37AM +0200, Vitaly Wool wrote: [ ... ] > Ugh. Could you please keep that patch and apply this on top: > > diff --git a/mm/z3fold.c b/mm/z3fold.c > index c0bca6153b95..e8a80d044d9e 100644 > --- a/mm/z3fold.c > +++ b/mm/z3fold.c > @@ -840,6 +840,7 @@ static int

Re: Crashes/hung tasks with z3pool under memory pressure

On Tue, Apr 17, 2018 at 12:14:37AM +0200, Vitaly Wool wrote: [ ... ] > Ugh. Could you please keep that patch and apply this on top: > > diff --git a/mm/z3fold.c b/mm/z3fold.c > index c0bca6153b95..e8a80d044d9e 100644 > --- a/mm/z3fold.c > +++ b/mm/z3fold.c > @@ -840,6 +840,7 @@ static int

Re: Crashes/hung tasks with z3pool under memory pressure

On 4/16/18 5:58 PM, Guenter Roeck wrote: On Mon, Apr 16, 2018 at 02:43:01PM +0200, Vitaly Wool wrote: Hey Guenter, On 04/13/2018 07:56 PM, Guenter Roeck wrote: On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck

Re: Crashes/hung tasks with z3pool under memory pressure

On 4/16/18 5:58 PM, Guenter Roeck wrote: On Mon, Apr 16, 2018 at 02:43:01PM +0200, Vitaly Wool wrote: Hey Guenter, On 04/13/2018 07:56 PM, Guenter Roeck wrote: On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck wrote: On Fri, Apr 13,

Re: Crashes/hung tasks with z3pool under memory pressure

On Mon, Apr 16, 2018 at 02:43:01PM +0200, Vitaly Wool wrote: > Hey Guenter, > > On 04/13/2018 07:56 PM, Guenter Roeck wrote: > > >On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: > >>On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck wrote: > >> > >>>On Fri, Apr 13,

Re: Crashes/hung tasks with z3pool under memory pressure

On Mon, Apr 16, 2018 at 02:43:01PM +0200, Vitaly Wool wrote: > Hey Guenter, > > On 04/13/2018 07:56 PM, Guenter Roeck wrote: > > >On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: > >>On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck wrote: > >> > >>>On Fri, Apr 13, 2018 at 05:21:02AM

Re: Crashes/hung tasks with z3pool under memory pressure

Hey Guenter, On 04/13/2018 07:56 PM, Guenter Roeck wrote: On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck wrote: On Fri, Apr 13, 2018 at 05:21:02AM +, Vitaly Wool wrote: Hi Guenter, Den fre 13 apr. 2018 kl

Re: Crashes/hung tasks with z3pool under memory pressure

Hey Guenter, On 04/13/2018 07:56 PM, Guenter Roeck wrote: On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck wrote: On Fri, Apr 13, 2018 at 05:21:02AM +, Vitaly Wool wrote: Hi Guenter, Den fre 13 apr. 2018 kl 00:01 skrev Guenter

Re: Crashes/hung tasks with z3pool under memory pressure

On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: > On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck wrote: > > > On Fri, Apr 13, 2018 at 05:21:02AM +, Vitaly Wool wrote: > > > Hi Guenter, > > > > > > > > > Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck

Re: Crashes/hung tasks with z3pool under memory pressure

On Fri, Apr 13, 2018 at 05:40:18PM +, Vitaly Wool wrote: > On Fri, Apr 13, 2018, 7:35 PM Guenter Roeck wrote: > > > On Fri, Apr 13, 2018 at 05:21:02AM +, Vitaly Wool wrote: > > > Hi Guenter, > > > > > > > > > Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck : > > > > > > > Hi all, > > >

Re: Crashes/hung tasks with z3pool under memory pressure

On Fri, Apr 13, 2018 at 05:21:02AM +, Vitaly Wool wrote: > Hi Guenter, > > > Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck : > > > Hi all, > > > we are observing crashes with z3pool under memory pressure. The kernel > version > > used to reproduce the problem is

Re: Crashes/hung tasks with z3pool under memory pressure

On Fri, Apr 13, 2018 at 05:21:02AM +, Vitaly Wool wrote: > Hi Guenter, > > > Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck : > > > Hi all, > > > we are observing crashes with z3pool under memory pressure. The kernel > version > > used to reproduce the problem is

Re: Crashes/hung tasks with z3pool under memory pressure

Hi Guenter, Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck : > Hi all, > we are observing crashes with z3pool under memory pressure. The kernel version > used to reproduce the problem is v4.16-11827-g5d1365940a68, but the problem was > also seen with v4.14 based kernels.

Re: Crashes/hung tasks with z3pool under memory pressure

Hi Guenter, Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck : > Hi all, > we are observing crashes with z3pool under memory pressure. The kernel version > used to reproduce the problem is v4.16-11827-g5d1365940a68, but the problem was > also seen with v4.14 based kernels. just before I dig

Crashes/hung tasks with z3pool under memory pressure

Hi all, we are observing crashes with z3pool under memory pressure. The kernel version used to reproduce the problem is v4.16-11827-g5d1365940a68, but the problem was also seen with v4.14 based kernels. For simplicity, here is a set of shortened logs. A more complete log is available at [1].

Crashes/hung tasks with z3pool under memory pressure

Hi all, we are observing crashes with z3pool under memory pressure. The kernel version used to reproduce the problem is v4.16-11827-g5d1365940a68, but the problem was also seen with v4.14 based kernels. For simplicity, here is a set of shortened logs. A more complete log is available at [1].