I'm not aware of this, please provide further reproduction details on JIRA
(which kernel, full gem5 CLIs, gem5 git version) and we'll have a look.
________________________________
From: Choe, Jiwon via gem5-users <gem5-users@gem5.org>
Sent: Wednesday, July 8, 2020 5:35 PM
To: gem5 users mailing list <gem5-users@gem5.org>
Cc: Choe, Jiwon <jiwon_c...@brown.edu>
Subject: [gem5-users] ARM full-system simulation error during checkpoint:
rcu_preempt detected stalls on CPUs/tasks
Hi,
I am currently running a 32-bit ARM full-system simulation. After I boot up the
OS on the simulated system, I take a checkpoint.
This worked fine before, but after I made some changes to the DRAM controller
code, the checkpoint stalls and I get this error message in the simulated
console:
INFO: rcu_preempt detected stalls on CPUs/tasks: { 2} (detected by 0, t=2102
jiffies, g=4294967009, c=4294967008, q=255)
(A huge log of CPU backtraces follow this error message.)
Has anyone run into similar issues before? I am a bit lost on where to start
debugging.
Thanks,
Jiwon
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