Bug 102321

Summary: deadlock in smp.c at on_each_cpu/smp_call_function_many
Product: Process Management Reporter: Kamil Paral (kparal)
Component: SchedulerAssignee: Ingo Molnar (mingo)
Status: NEW ---    
Severity: normal CC: szg00000
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: kernel-4.0.7-300.fc22.x86_64 Subsystem:
Regression: No Bisected commit-id:

Description Kamil Paral 2015-08-05 07:09:40 UTC 
Hello,

I've experienced a kernel panic, the screenshots are here:
https://bugs.freedesktop.org/attachment.cgi?id=117026
https://bugs.freedesktop.org/attachment.cgi?id=117027

It happened with kernel-4.0.7-300.fc22.x86_64 on Fedora 22.

Originally I reported it against the radeon driver [1], but I was told that it 
seems to be a deadlock in on_each_cpu/smp_call_function_many (which seems 
to be in smp.c) and that I should report it into an appropriate mailing list. I did that [2], but no one replied in two weeks. I hope I picked the right component here in bugzilla.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=91291
[2] http://thread.gmane.org/gmane.linux.kernel/2000325