From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Mike Galbraith <efault@gmx.de>
Cc: RT <linux-rt-users@vger.kernel.org>
Subject: Re: zswap explosion when using zsmalloc pool compression
Date: Thu, 3 Dec 2020 10:48:05 +0100 [thread overview]
Message-ID: <20201203094805.dhk3f7mlth3vm6ck@linutronix.de> (raw)
In-Reply-To: <345fdb33f5bc0046b80c6319e61e9ee33b83cac6.camel@gmx.de>
On 2020-12-03 10:40:16 [+0100], Mike Galbraith wrote:
> In thread "scheduling while atomic in z3fold", I mentioned that of the
> three pool methods, only zbud did not explode. Below is the explosion
> encountered when zsmalloc is used in conjunction with runltp -f mm. As
> with the z3fold explosion, this one also seems to be highly repeatable,
> this from one of my full distro "my box plays russian dolls [1]" KVMs.
great.
> [ 5763.720268] kernel BUG at kernel/locking/rtmutex.c:1057!
…
> [ 5763.726016] RAX: 00000000ffffffdd RBX: ffff903f77c68080 RCX: 0000000000000001
That is a deadlock. Does lockdep say anything or does it disable the bug
from happening?
Sebastian
next prev parent reply other threads:[~2020-12-03 9:49 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-28 14:05 scheduling while atomic in z3fold Oleksandr Natalenko
2020-11-28 14:09 ` Oleksandr Natalenko
2020-11-28 14:27 ` Oleksandr Natalenko
2020-11-29 6:41 ` Mike Galbraith
2020-11-29 6:41 ` Mike Galbraith
2020-11-29 7:48 ` Mike Galbraith
2020-11-29 9:21 ` Mike Galbraith
2020-11-29 9:21 ` Mike Galbraith
2020-11-29 10:56 ` Mike Galbraith
2020-11-29 10:56 ` Mike Galbraith
2020-11-29 11:29 ` Oleksandr Natalenko
2020-11-29 11:41 ` Mike Galbraith
2020-11-29 11:41 ` Mike Galbraith
2020-11-30 13:20 ` Sebastian Andrzej Siewior
2020-11-30 13:53 ` Oleksandr Natalenko
2020-11-30 14:28 ` Sebastian Andrzej Siewior
2020-11-30 14:42 ` Mike Galbraith
2020-11-30 14:42 ` Mike Galbraith
2020-11-30 14:52 ` Sebastian Andrzej Siewior
2020-11-30 15:01 ` Mike Galbraith
2020-11-30 15:01 ` Mike Galbraith
2020-11-30 15:03 ` Mike Galbraith
2020-11-30 15:03 ` Mike Galbraith
2020-11-30 16:03 ` Sebastian Andrzej Siewior
2020-11-30 16:27 ` Mike Galbraith
2020-11-30 16:27 ` Mike Galbraith
2020-11-30 16:32 ` Sebastian Andrzej Siewior
2020-11-30 16:36 ` Mike Galbraith
2020-11-30 16:36 ` Mike Galbraith
2020-11-30 19:09 ` Mike Galbraith
2020-11-30 19:09 ` Mike Galbraith
2020-11-30 16:53 ` Mike Galbraith
2020-11-30 16:53 ` Mike Galbraith
2020-12-02 2:30 ` Mike Galbraith
2020-12-02 2:30 ` Mike Galbraith
2020-12-02 22:08 ` Sebastian Andrzej Siewior
2020-12-03 2:16 ` Mike Galbraith
2020-12-03 2:16 ` Mike Galbraith
2020-12-03 8:18 ` Mike Galbraith
2020-12-03 8:18 ` Mike Galbraith
2020-12-03 9:40 ` zswap explosion when using zsmalloc pool compression Mike Galbraith
2020-12-03 9:48 ` Sebastian Andrzej Siewior [this message]
2020-12-03 11:03 ` Mike Galbraith
2020-12-03 12:51 ` Mike Galbraith
2020-12-03 13:07 ` Mike Galbraith
2020-12-03 13:43 ` Mike Galbraith
2020-12-03 14:04 ` Mike Galbraith
2020-12-04 5:22 ` [patch] mm,zswap: fix zswap::zswap_comp.lock vs zsmalloc::zs_map_area.lock deadlock Mike Galbraith
2020-12-03 13:39 ` scheduling while atomic in z3fold Sebastian Andrzej Siewior
2020-12-03 14:07 ` Vitaly Wool
2020-12-03 14:07 ` Vitaly Wool
2020-12-06 9:18 ` Mike Galbraith
2020-12-06 9:18 ` Mike Galbraith
2020-12-07 1:05 ` Vitaly Wool
2020-12-07 2:18 ` Mike Galbraith
2020-12-07 2:18 ` Mike Galbraith
2020-12-07 11:52 ` Vitaly Wool
2020-12-07 11:52 ` Vitaly Wool
2020-12-07 12:34 ` Mike Galbraith
2020-12-07 12:34 ` Mike Galbraith
2020-12-07 15:21 ` Vitaly Wool
2020-12-07 15:21 ` Vitaly Wool
2020-12-07 15:41 ` Sebastian Andrzej Siewior
2020-12-07 15:41 ` Mike Galbraith
2020-12-07 15:41 ` Mike Galbraith
2020-12-08 23:26 ` Vitaly Wool
2020-12-09 6:13 ` Mike Galbraith
2020-12-09 6:13 ` Mike Galbraith
2020-12-09 6:31 ` Mike Galbraith
2020-12-09 6:31 ` Mike Galbraith
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