Bug 192776

Summary: Random System Freeze
Product: [Retired] Fedora Legacy Reporter: Keith Chew <keith.chew>
Component: kernelAssignee: Fedora Legacy Bugs <bugs>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: fc3   
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2006-05-26 01:22:56 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Full Sysrq stack traces none

Description Keith Chew 2006-05-22 21:35:51 UTC 
Description of problem:

At random times, we encounter a system freeze. Stack trace is captured via 
serial console and attached below.

Version-Release number of selected component (if applicable):
FC3 with kernel 2.6.14.2

How reproducible:
It is very hard to reproduce this problem, we has to allocate 5 PCs all running 
with serial console. After a couple of days, we get a system freeze.

Actual results:
[17385817.624000] SysRq : Show Regs
[17385817.624000] 
[17385817.624000] Pid: 0, comm:              swapper
[17385817.624000] EIP: 0060:[<c010ff94>] CPU: 0
[17385817.624000] EIP is at delay_pmtmr+0x14/0x20
[17385817.624000]  EFLAGS: 00000293    Not tainted  (2.6.14.2)
[17385817.624000] EAX: f1c54d17 EBX: 0019c0be ECX: f1b07a21 EDX: 00013f29
[17385817.624000] ESI: ffffffff EDI: c0351800 EBP: c0403bfc DS: 007b ES: 007b
[17385817.624000] CR0: 8005003b CR2: 6c9e4616 CR3: 1a1e4000 CR4: 000006d0
[17385817.624000]  [<c010137d>] show_regs+0x14d/0x174
[17385817.624000]  [<c023b0e5>] sysrq_handle_showregs+0x15/0x20
[17385817.624000]  [<c023b305>] __handle_sysrq+0x85/0x130
[17385817.624000]  [<c023b3e3>] handle_sysrq+0x33/0x40
[17385817.624000]  [<c025b07f>] receive_chars+0x20f/0x2d0
[17385817.624000]  [<c025b479>] serial8250_interrupt+0x109/0x110
[17385817.624000]  [<c013e72e>] handle_IRQ_event+0x3e/0x90
[17385817.624000]  [<c013e7f6>] __do_IRQ+0x76/0xe0
[17385817.624000]  [<c01049f7>] do_IRQ+0x37/0x70
[17385817.624000]  [<c01032f6>] common_interrupt+0x1a/0x20
[17385817.624000]  [<c01de9d4>] __delay+0x14/0x20
[17385817.624000]  [<c01dea0a>] __const_udelay+0x2a/0x30
[17385817.624000]  [<c011b8c8>] panic+0xf8/0x100
[17385817.624000]  [<c0103a9a>] die+0x14a/0x160
[17385817.624000]  [<c0351be1>] do_page_fault+0x3e1/0x620
[17385817.624000]  [<c0103353>] error_code+0x4f/0x54
[17385817.624000]  [<c013e72e>] handle_IRQ_event+0x3e/0x90
[17385817.624000]  [<c013e7f6>] __do_IRQ+0x76/0xe0
[17385817.624000]  [<c01049f7>] do_IRQ+0x37/0x70
[17385817.624000]  [<c01032f6>] common_interrupt+0x1a/0x20
[17385817.624000]  [<c0351be1>] do_page_fault+0x3e1/0x620
[17385817.624000]  [<c0103353>] error_code+0x4f/0x54
[17385817.624000]  [<c013e72e>] handle_IRQ_event+0x3e/0x90
[17385817.624000]  [<c013e7f6>] __do_IRQ+0x76/0xe0
[17385817.624000]  [<c01049f7>] do_IRQ+0x37/0x70
[17385817.624000]  [<c01032f6>] common_interrupt+0x1a/0x20
[17385817.624000]  [<c0101123>] cpu_idle+0x63/0x70
[17385817.624000]  [<c010024b>] rest_init+0x2b/0x40
[17385817.624000]  [<c040487f>] start_kernel+0x18f/0x1d0
[17385817.624000]  [<c0100199>] 0xc0100199


We have mencoder running in the background recording from the bttv driver. We 
also have mplayer playing video periodically. 

What's special about this stack trace is there are no driver modules associated 
with the crash! In all our previous stack traces that we have debugged, there's 
always a driver module associated, which helped us track the problem.
Comment 1 Keith Chew 2006-05-22 21:35:51 UTC 
Created attachment 129830 [details]
Full Sysrq stack traces
Comment 2 Marc Deslauriers 2006-05-26 01:22:56 UTC 
kernel 2.6.14.2 is not a version Fedora Legacy supports. Please install the
kernel-2.6.12-2.3.legacy_FC3 rpm and see if the problem persists.