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CentOS Errata and Bugfix Advisory 2018:2895 Upstream details at : https://access.redhat.com/errata/RHBA-2018:2895 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 334ee6d935abe38fdd59e2d7d328190730db5c3ece3eb93c47af9665396809d5 libcgroup-0.40.rc1-27.el6_10.i686.rpm f...

When doing cpu hotplug in a KVM guest with virtio blk I get warnings like 747.652408] ------------[ cut here ]------------ [ 747.652410] WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 __blk_mq_run_hw_queue+0xd4/0x100 [ 747.652410] Modules linked in: dm_multipath [ 747.652412] CPU: 4 PID: 2895 Comm: kworker/4:1H Tainted: G W 4.14.0+ #191 [ 747.652412] Hardware name: IBM 2964 NC9 704 (KVM/Linux) [ 747.652414] Workqueue: kblockd blk_mq_run_wo...

When doing cpu hotplug in a KVM guest with virtio blk I get warnings like 747.652408] ------------[ cut here ]------------ [ 747.652410] WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 __blk_mq_run_hw_queue+0xd4/0x100 [ 747.652410] Modules linked in: dm_multipath [ 747.652412] CPU: 4 PID: 2895 Comm: kworker/4:1H Tainted: G W 4.14.0+ #191 [ 747.652412] Hardware name: IBM 2964 NC9 704 (KVM/Linux) [ 747.652414] Workqueue: kblockd blk_mq_run_wo...

On Fri, 2017-11-17 at 15:42 +0100, Christian Borntraeger wrote: > This is > > b7a71e66d (Jens Axboe 2017-08-01 09:28:24 -0600 1141) * are mapped to it. > b7a71e66d (Jens Axboe 2017-08-01 09:28:24 -0600 1142) */ > 6a83e74d2 (Bart Van Assche 2016-11-02 10:09:51 -0600 1143) WARN_ON(!cpumask_test_cpu(raw_smp_processor_id(),

On 11/20/2017 12:29 PM, Christian Borntraeger wrote: > > > On 11/20/2017 08:20 PM, Bart Van Assche wrote: >> On Fri, 2017-11-17 at 15:42 +0100, Christian Borntraeger wrote: >>> This is >>> >>> b7a71e66d (Jens Axboe 2017-08-01 09:28:24 -0600 1141) * are mapped to it. >>> b7a71e66d (Jens Axboe 2017-08-01 09:28:24

On 11/21/2017 03:14 AM, Christian Borntraeger wrote: > Bisect points to > > 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit > commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 > Author: Christoph Hellwig <hch at lst.de> > Date: Mon Jun 26 12:20:57 2017 +0200 > > blk-mq: Create hctx for each present CPU > > commit

On 11/21/2017 07:09 PM, Jens Axboe wrote: > On 11/21/2017 10:27 AM, Jens Axboe wrote: >> On 11/21/2017 03:14 AM, Christian Borntraeger wrote: >>> Bisect points to >>> >>> 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit >>> commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 >>> Author: Christoph Hellwig <hch at lst.de>

Jens, please don't just revert the commit in your for-linus tree. On its own this will totally mess up the interrupt assignments. Give me a bit of time to sort this out properly.

I can't reproduce it in my VM with adding a new CPU. Do you have any interesting blk-mq like actually using multiple queues? I'll give that a spin next.

Jens, please don't just revert the commit in your for-linus tree. On its own this will totally mess up the interrupt assignments. Give me a bit of time to sort this out properly.

I can't reproduce it in my VM with adding a new CPU. Do you have any interesting blk-mq like actually using multiple queues? I'll give that a spin next.

I stand to "inherit" some of these motherboards from another project. They seem like a nice dual socket 940 board that also supports dual core opterons, but I don't have any personal experience with them. Anyone using them in production w/CentOS 4.2? Best regards,

On 11/21/2017 09:35 AM, Christian Borntraeger wrote: > > > On 11/20/2017 09:52 PM, Jens Axboe wrote: >> On 11/20/2017 01:49 PM, Christian Borntraeger wrote: >>> >>> >>> On 11/20/2017 08:42 PM, Jens Axboe wrote: >>>> On 11/20/2017 12:29 PM, Christian Borntraeger wrote: >>>>> >>>>> >>>>> On

On 11/20/2017 01:49 PM, Christian Borntraeger wrote: > > > On 11/20/2017 08:42 PM, Jens Axboe wrote: >> On 11/20/2017 12:29 PM, Christian Borntraeger wrote: >>> >>> >>> On 11/20/2017 08:20 PM, Bart Van Assche wrote: >>>> On Fri, 2017-11-17 at 15:42 +0100, Christian Borntraeger wrote: >>>>> This is >>>>>

...b3e0a68f7 f4572aa21b249a851a1b604c148eea109e93b30d M include adding Christoph FWIW, your patch triggers the following on 4.14 when doing a cpu hotplug (adding a CPU) and then accessing a virtio-blk device. 747.652408] ------------[ cut here ]------------ [ 747.652410] WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 __blk_mq_run_hw_queue+0xd4/0x100 [ 747.652410] Modules linked in: dm_multipath [ 747.652412] CPU: 4 PID: 2895 Comm: kworker/4:1H Tainted: G W 4.14.0+ #191 [ 747.652412] Hardware name: IBM 2964 NC9 704 (KVM/Linux) [ 747.652414] Workqueue: kblockd blk_mq_run_wo...

...b3e0a68f7 f4572aa21b249a851a1b604c148eea109e93b30d M include adding Christoph FWIW, your patch triggers the following on 4.14 when doing a cpu hotplug (adding a CPU) and then accessing a virtio-blk device. 747.652408] ------------[ cut here ]------------ [ 747.652410] WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 __blk_mq_run_hw_queue+0xd4/0x100 [ 747.652410] Modules linked in: dm_multipath [ 747.652412] CPU: 4 PID: 2895 Comm: kworker/4:1H Tainted: G W 4.14.0+ #191 [ 747.652412] Hardware name: IBM 2964 NC9 704 (KVM/Linux) [ 747.652414] Workqueue: kblockd blk_mq_run_wo...

On 11/21/2017 11:27 AM, Jens Axboe wrote: > On 11/21/2017 11:12 AM, Christian Borntraeger wrote: >> >> >> On 11/21/2017 07:09 PM, Jens Axboe wrote: >>> On 11/21/2017 10:27 AM, Jens Axboe wrote: >>>> On 11/21/2017 03:14 AM, Christian Borntraeger wrote: >>>>> Bisect points to >>>>> >>>>>

On 11/21/2017 01:12 PM, Christian Borntraeger wrote: > > > On 11/21/2017 08:30 PM, Jens Axboe wrote: >> On 11/21/2017 12:15 PM, Christian Borntraeger wrote: >>> >>> >>> On 11/21/2017 07:39 PM, Jens Axboe wrote: >>>> On 11/21/2017 11:27 AM, Jens Axboe wrote: >>>>> On 11/21/2017 11:12 AM, Christian Borntraeger wrote:

On 11/21/2017 01:19 PM, Christian Borntraeger wrote: > > On 11/21/2017 09:14 PM, Jens Axboe wrote: >> On 11/21/2017 01:12 PM, Christian Borntraeger wrote: >>> >>> >>> On 11/21/2017 08:30 PM, Jens Axboe wrote: >>>> On 11/21/2017 12:15 PM, Christian Borntraeger wrote: >>>>> >>>>> >>>>> On 11/21/2017

On 11/20/2017 08:20 PM, Bart Van Assche wrote: > On Fri, 2017-11-17 at 15:42 +0100, Christian Borntraeger wrote: >> This is >> >> b7a71e66d (Jens Axboe 2017-08-01 09:28:24 -0600 1141) * are mapped to it. >> b7a71e66d (Jens Axboe 2017-08-01 09:28:24 -0600 1142) */ >> 6a83e74d2 (Bart Van Assche 2016-11-02 10:09:51