Messages in this thread | | | Date | Tue, 24 Nov 2015 11:35:28 +0530 | From | Raghavendra K T <> | Subject | Re: BUG: Unable to handle kernel paging request for data at address __percpu_counter_add |
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On 11/24/2015 02:43 AM, Tejun Heo wrote: > Hello, > > On Thu, Nov 19, 2015 at 03:54:35PM +0530, Raghavendra K T wrote: >> While I was creating thousands of docker container on a power8 baremetal >> (config: 4.3.0 kernel 1TB RAM, 20core (=160 cpu) system. After creating >> around 5600 container >> I have hit below problem. >> [This is looking similar to >> https://bugzilla.kernel.org/show_bug.cgi?id=101011, but >> kernel had Revert "ext4: remove block_device_ejected" (bdfe0cbd746aa9) since >> it is 4.3.0 tagged kernel] >> >> Any hints on how to go about the fix. Please let me know if you think any >> more information needed. >> >> docker daemon is device mapper based. (and it took a day to recreate the >> problem) >> >> [ by disabling CONFIG_BLK_CGROUP and CONFIG_CGROUP_WRITEBACK I am able to >> create 10k containers without any problem] > > Could be the same problem that Ilya is trying to fix. ie. blkdev i_wb > pointing to a stale wb. Can you please see whether the following > patch resolves the issue? > > http://lkml.kernel.org/g/1448054554-24138-1-git-send-email-idryomov@gmail.com >
Thanks Tejun for the pointer. Will check if the patch resolves the issue. (reproduction takes loong time.. so it may take some time to report back).
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