Bug 39864 - Kernel panic when using apend mem=xxxM
Kernel panic when using apend mem=xxxM
Status: CLOSED NOTABUG
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
7.1
i386 Linux
medium Severity high
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Assigned To: Ingo Molnar
Brock Organ
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Depends On: 36940
Blocks:
  Show dependency treegraph
 
Reported: 2001-05-09 09:59 EDT by David Revor
Modified: 2007-04-18 12:33 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2001-05-30 10:41:47 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description David Revor 2001-05-09 09:59:56 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; Win 9x 4.90; 
NetCaptor 6.2.1A)

Description of problem:
On a compaq proliant 4500 the installer doesn't see enough memory to run 
so I adjusted the memory like I have for previous vers. The kernel panics 
with "VFS: cannot mount root device on 8:35". I have 512M in the system so 
I started with mem=512M then I tuned it down some knowing sometimes you 
have to go 1 less ie mem=511M. Still got a panic. Note: this box is NOT on 
the hardware list.

How reproducible:
Always

Steps to Reproduce:
1.from installation welcome screen type "linux mem=512M <cr>"
2.
3.
	

Actual Results:  Kernel panic

Expected Results:  Installtion should continue as normal with the kernel 
being able to utilize all available memory

Additional info:
Comment 1 Need Real Name 2001-05-09 16:29:08 EDT
I have the same problem with a Compaq 2500R.
Comment 2 Arjan van de Ven 2001-05-09 16:34:13 EDT
Ingo: could you add an example of exactmap for a 64Mb machine here ?
Comment 3 Arjan van de Ven 2001-05-11 04:38:49 EDT
Please look at bug 36940 for the commandline option to work around this.

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