Opened 15 months ago

Last modified 13 months ago

#15105 new bug

KDL: Failed to acquire spinlock (ConditionVariables)

Reported by: konrad Owned by: nobody
Priority: normal Milestone: Unscheduled
Component: System/Kernel Version: R1/Development
Keywords: Cc:
Blocked By: Blocking: #15005, #15163
Platform: x86-64


Was browsing (hrev53176) in Parallels on a Macbook Pro.

Attachments (1)

Skärmavbild 2019-06-02 kl. 20.21.13.png (273.7 KB ) - added by konrad 15 months ago.
stack trace

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Change History (7)

by konrad, 15 months ago

stack trace

comment:1 by pulkomandy, 15 months ago

Component: - GeneralSystem/Kernel

comment:2 by waddlesplash, 14 months ago

The implementation for ConditionVariable::Add calls another function that locks a static mutex, and I've no idea how that could be uninitialized or the like. So I'm not sure what's going on here.

comment:3 by waddlesplash, 13 months ago

Blocking: 15163 added

comment:4 by waddlesplash, 13 months ago

Summary: kdl from WebpositiveKDL: Failed to acquire spinlock (ConditionVariables)

comment:5 by waddlesplash, 13 months ago

Blocking: 15005 added

comment:6 by waddlesplash, 13 months ago

The implementation I linked above is the one for the kernelland_emu (whoops.) The real one had what looked like a disturbing amount of spinlock contention. Following hrev53336, that should be fixed (though there was a bug in it that I fixed in hrev53337.) So if you can test after that hrev, it will be very interesting to see if this is improved at all.

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