Re: Crashes/hung tasks with z3pool under memory pressure
- Date: Fri, 13 Apr 2018 10:35:55 -0700
- From: Guenter Roeck <linux@xxxxxxxxxxxx>
- Subject: Re: Crashes/hung tasks with z3pool under memory pressure
On Fri, Apr 13, 2018 at 05:21:02AM +0000, Vitaly Wool wrote:
> Hi Guenter,
> Den fre 13 apr. 2018 kl 00:01 skrev Guenter Roeck <linux@xxxxxxxxxxxx>:
> > Hi all,
> > we are observing crashes with z3pool under memory pressure. The kernel
> > 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 into this, could you please try reproducing the errors
> you see with https://patchwork.kernel.org/patch/10210459/ applied?
As mentioned above, I tested with v4.16-11827-g5d1365940a68, which already
includes this patch.
$ git log --oneline v4.14..5d1365940a68 mm/z3fold.c
8a97ea546bb6 mm/z3fold.c: use gfpflags_allow_blocking
1ec6995d1290 z3fold: fix memory leak
5c9bab592f53 z3fold: limit use of stale list for allocation
f144c390f905 mm: docs: fix parameter names mismatch
5d03a6613957 mm/z3fold.c: use kref to prevent page free/compact race