On Tue, Jun 13, 2023 at 11:58:05AM -0700, Bhatnagar, Rishabh wrote:
On 6/13/23 11:49 AM, Bhatnagar, Rishabh wrote:
Hi Sebastian/Greg
We are seeing RCU stall warnings from recent stable tree updates: 5.4.243, 5.10.180, 5.15.113, 6.1.31 onwards. This is seen in the upstream stable trees without any downstream patches.
The issue is seen few minutes after booting without any workload. We launch hundred's of virtual instances and this shows up in 1-2 instances, so its hard to reproduce. Attaching a few stack traces below.
The issue can be seen on virtual and baremetal instances. Another interesting point is we only see this on x86 based instances. We also did test this on linux-mainline but were not able to reproduce the issue. So maybe there's a fixup or related commit that has gone in?
Oops, missed this.
Yes, there might be, can you do 'git bisect' and track down the patch that fixed this?
thanks,
greg k-h