Kernel 64bit Crash/Hung

Giridhara RP (grp) grp at
Mon Jan 26 19:29:18 EST 2015


Please note my CPU is this.
Intel(R) Xeon(R) CPU E5-4650 v2 @ 2.40GHz stepping 04

From: Giridhara RP (grp)
Sent: Tuesday, January 27, 2015 5:37 AM
To: kernelnewbies at
Subject: Kernel 64bit Crash/Hung


I am facing crash/hang  with Kernel (64bit). My maxcpus (CONFIG_NR_CPUS)  count is 64 and below is the call trace. I see log saying "BUG: spinlock lockup on CPU#74". Is it a  known bug? If its fixed let me know the patch.  Any pointers really appreciated.
Please note, if I change maxcpus=8 kernel boots successfully.

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