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Date: Mon, 15 Aug 2022 03:43:10 -0400 From: "Michael S. Tsirkin" <mst@...hat.com> To: Andres Freund <andres@...razel.de> Cc: Jens Axboe <axboe@...nel.dk>, Linus Torvalds <torvalds@...ux-foundation.org>, James Bottomley <James.Bottomley@...senpartnership.com>, "Martin K. Petersen" <martin.petersen@...cle.com>, Guenter Roeck <linux@...ck-us.net>, linux-kernel@...r.kernel.org, Greg KH <gregkh@...uxfoundation.org> Subject: Re: upstream kernel crashes On Mon, Aug 15, 2022 at 12:17:44AM -0700, Andres Freund wrote: > Hi, > > On August 14, 2022 11:36:55 PM PDT, "Michael S. Tsirkin" <mst@...hat.com> wrote: > >On Sun, Aug 14, 2022 at 06:36:51PM -0700, Andres Freund wrote: > >> Hi, > >> > >> On 2022-08-14 19:04:22 -0600, Jens Axboe wrote: > >> > I took a quick look and added more SCSI bits to my vm images, but > >> > haven't been able to hit it. > >> > >> Didn't immediately hit anything locally in a vm either... > >> > >> > >> > Sounds like Andres is already bisecting this, so I guess we'll be wiser > >> > soon enough. > >> > >> I started bisecting the network issue, as it occurred first, and who knows > >> what else it could affect. Will bisect the other range after. > >> > >> Due to the serial console issue mentioned upthread it's pretty slow > >> going. Each iteration I create a new gcp snapshot and vm. Adds like ~10min. > >> Doesn't help if intermediary steps don't boot with different symptoms and > >> another doesn't immediately build... > > > >Just so we can stop pestering everyone, could you try > > > >git revert --no-edit 0b6fd46ec5f5..a335b33f4f35 ? > > > >Equivalently I pushed it here: > > > >https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git test > > Saw this too late - I assume you don't need this anymore now that I pinpointed the one commit? > > Andres Right, at least not yet - could you clarify the folliwing please: So IIUC you see several issues, right? With 762faee5a2678559d3dc09d95f8f2c54cd0466a7 you see networking issues. With ebcce492636506443e4361db6587e6acd1a624f9 you see crashes. I just want to make sure the issue is virtio specific and then we can drop Linus et al and move this to the virtio ML. Thanks! -- MST
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