[DragonFlyBSD - Bug #1634] panic: spin_lock: 0xe4ad1320, indefinitive wait!

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Mon Jan 19 03:21:52 PST 2015

Issue #1634 has been updated by tuxillo.

Description updated
Category set to Kernel
Assignee deleted (0)
Target version set to Unverifiable

Moving to unverifiable.

Bug #1634: panic: spin_lock: 0xe4ad1320, indefinitive wait!

* Author: elekktretterr
* Status: New
* Priority: Normal
* Assignee: 
* Category: Kernel
* Target version: Unverifiable
Our dragonfly box has got a panic last night. it runs master from last week.

I wrote down some text from the panic:

mp_lock = 00000002; cpuid = 2

Trace beginning at frame  0xe42d3b88

exponential_backoff(ff010000, 1 ,3c, e4ad1320, c727dbb)
spin_lock_wr_contested(e4ad1320, 0000000)
crfree(e4ad12b0,2, e42f3cc4, c00ef73, e42f3c00)
nlookup_done(e42f3c00, e4960720, c0304fe3, 0, c0384b5c)

Whoever can understand this, can you tell me what happened and how can
this be fixed?

Also, is there any way to automate this: when panic occurs, automatically
start a memory dump process and then automatically reboot? I've been going
to the data center way too many times recently to investigate why the box
has crashed and it would be very helpful.


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