From: "Deucher, Alexander" <Alexander.Deucher@amd.com>
To: "Michel Dänzer" <michel@daenzer.net>,
"Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>,
"Kazlauskas, Nicholas" <Nicholas.Kazlauskas@amd.com>,
"Wentland, Harry" <Harry.Wentland@amd.com>,
"Li, Sun peng (Leo)" <Sunpeng.Li@amd.com>,
"amd-gfx@lists.freedesktop.org" <amd-gfx@lists.freedesktop.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: amdgpu crashes on OOM
Date: Mon, 26 Oct 2020 14:34:20 +0000 [thread overview]
Message-ID: <MN2PR12MB448824F6E08D1498206EFFE6F7190@MN2PR12MB4488.namprd12.prod.outlook.com> (raw)
In-Reply-To: <81568253-518f-43b7-6b20-432f7dbd6c2b@daenzer.net>
[AMD Public Use]
> -----Original Message-----
> From: Michel Dänzer <michel@daenzer.net>
> Sent: Monday, October 26, 2020 7:04 AM
> To: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>; Kazlauskas, Nicholas
> <Nicholas.Kazlauskas@amd.com>; Deucher, Alexander
> <Alexander.Deucher@amd.com>; Wentland, Harry
> <Harry.Wentland@amd.com>; Li, Sun peng (Leo) <Sunpeng.Li@amd.com>;
> amd-gfx@lists.freedesktop.org
> Cc: linux-kernel@vger.kernel.org
> Subject: Re: amdgpu crashes on OOM
>
> On 2020-10-26 5:29 a.m., Alex Xu (Hello71) wrote:
> > Hi,
> >
> > I frequently encounter OOM on my system, mostly due to my own fault.
> > Recently, I noticed that not only does a swap storm happen and OOM
> > killer gets invoked, but the graphics output freezes permanently.
> > Checking the kernel messages, I see:
> >
> > kworker/u24:4: page allocation failure: order:5,
> mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO),
> nodemask=(null)
> > CPU: 6 PID: 279469 Comm: kworker/u24:4 Tainted: G W 5.9.0-14732-
> g20b1adb60cf6 #2
> > Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./B450
> > Pro4, BIOS P4.20 06/18/2020
> > Workqueue: events_unbound commit_work
> > Call Trace:
> > ? dump_stack+0x57/0x6a
> > ? warn_alloc.cold+0x69/0xcd
> > ? __alloc_pages_direct_compact+0xfb/0x116
> > ? __alloc_pages_slowpath.constprop.0+0x9c2/0xc14
> > ? __alloc_pages_nodemask+0x143/0x167
> > ? kmalloc_order+0x24/0x64
> > ? dc_create_state+0x1a/0x4d
> > ? amdgpu_dm_atomic_commit_tail+0x1b19/0x227d
>
> Looks like dc_create_state should use kvzalloc instead of kzalloc
> (dc_state_free already uses kvfree).
>
> order:5 means it's trying to allocate 32 physically contiguous pages, which can
> be hard to fulfill even with lower memory pressure.
>
It was using kvzalloc, but was accidently dropped when that code was refactored. I just sent a patch to fix it.
Alex
>
> --
> Earthling Michel Dänzer |
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fredh
> at.com%2F&data=04%7C01%7Calexander.deucher%40amd.com%7Cc60
> 56551dd4d423bdc0508d8799ed189%7C3dd8961fe4884e608e11a82d994e183d
> %7C0%7C0%7C637393070333648663%7CUnknown%7CTWFpbGZsb3d8eyJWIj
> oiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1
> 000&sdata=a7Lpu04KnpsFQpCO7y5WOLJSMPpA%2Be1s%2FufgYTDHs2k
> %3D&reserved=0
> Libre software enthusiast | Mesa and X developer
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next prev parent reply other threads:[~2020-10-26 14:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1603684905.h43s1t0y05.none.ref@localhost>
2020-10-26 4:29 ` amdgpu crashes on OOM Alex Xu (Hello71)
2020-10-26 11:03 ` Michel Dänzer
2020-10-26 14:34 ` Deucher, Alexander [this message]
2020-10-26 14:50 ` Alex Xu (Hello71)
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