Bug 126863

Summary: 6.2 (SMP) crashes when polling disabled
Product: Base System Reporter: Vladimir Melnik <noc>
Component: kernAssignee: Gavin Atkinson <gavin>
Status: Closed FIXED    
Severity: Affects Only Me CC: noc
Priority: Normal    
Version: 6.2-RELEASE   
Hardware: Any   
OS: Any   

Description Vladimir Melnik 2008-08-26 19:40:03 UTC 
When we disabled device polling with sysctl, system has been crashed in a hour after that.

Aug 26 12:17:53 kompas kernel: kernel trap 12 with interrupts disabled
Aug 26 12:17:53 kompas kernel:
Aug 26 12:17:53 kompas kernel:
Aug 26 12:17:53 kompas kernel: Fatal trap 12: page fault while in kernel mode
Aug 26 12:17:53 kompas kernel: cpuid = 1; apic id = 01
Aug 26 12:17:53 kompas kernel: fault virtual address    = 0x104
Aug 26 12:17:53 kompas kernel: fault code               = supervisor read, page not present
Aug 26 12:17:53 kompas kernel: instruction pointer      = 0x20:0xc0509985
Aug 26 12:17:53 kompas kernel: stack pointer            = 0x28:0xe74ccb74
Aug 26 12:17:53 kompas kernel: frame pointer            = 0x28:0xe74ccb80
Aug 26 12:17:53 kompas kernel: code segment             = base rx0, limit 0xfffff, type 0x1b
Aug 26 12:17:53 kompas kernel: = DPL 0, pres 1, def32 1, gran 1
Aug 26 12:17:53 kompas kernel: processor eflags = resume, IOPL = 0
Aug 26 12:17:53 kompas kernel: current process          = 12 (swi1: net)
Aug 26 12:17:53 kompas kernel: trap number              = 12
Aug 26 12:17:53 kompas kernel: panic: page fault
Aug 26 12:17:53 kompas kernel: cpuid = 1
Aug 26 12:17:53 kompas kernel: Uptime: 7d5h0m54s
Aug 26 12:17:53 kompas kernel: Cannot dump. No dump device defined.

After reboot system was worked almost 2 hours and crashed again, but there was no messages in /var/log/messages.

Fix: 

It would be just great to know how to fix it :-)
How-To-Repeat: 
I'm not sure I really know how to repeat it again :-(
Comment 1 Gavin Atkinson freebsd_committer freebsd_triage 2008-08-26 20:09:51 UTC 
State Changed
From-To: open->closed

Close, duplicate of 126861
Comment 2 Gavin Atkinson freebsd_committer freebsd_triage 2008-08-26 20:09:51 UTC 
Responsible Changed
From-To: freebsd-bugs->gavin