kernel panic-not syncing:fatal exception while booting


 
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Special Forums UNIX Desktop Questions & Answers kernel panic-not syncing:fatal exception while booting
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Old 06-17-2009
RHEL 5.2 is really stable, and SATA is not exactly ultra-modern hardware. It's a good possibility that there is a defect in the motherboard, CPU, or memory. Have you tried booting off the CD-ROM without the hard drive? (Download a "live CD" based off another distribution). Try swapping memory banks to see if the problem occurs at a different point during the process. Have you manually adjusted any BIOS settings? Overriding the BIOS auto-detected memory-refresh settings can have such effects.
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KASSERT(9)						   BSD Kernel Developer's Manual						KASSERT(9)

NAME
KASSERT, KASSERTMSG, KDASSERT, KDASSERTMSG -- kernel expression verification macros SYNOPSIS
void KASSERT(expression); void KASSERTMSG(expression, format, ...); void KDASSERT(expression); void KDASSERTMSG(expression, format, ...); DESCRIPTION
These machine independent assertion-checking macros cause a kernel panic(9) if the given expression evaluates to false. Two compile-time options(4) define the behavior of the checks. 1. The KASSERT() and KASSERTMSG() tests are included only in kernels compiled with the DIAGNOSTIC configuration option. In a kernel that does not have this configuration option, the macros are defined to be no-ops. 2. The KDASSERT() and KDASSERTMSG() tests are included only in kernels compiled with the DEBUG configuration option. The KDASSERT() and KASSERT() macros are identical except for the controlling option (DEBUG vs DIAGNOSTIC). Basically, KASSERT() should be used for light-weight checks and KDASSERT() should be used for heavier ones. Callers should not rely on the side effects of expression because, depending on the kernel compile options mentioned above, expression might not be evaluated at all. The panic message will display the style of assertion (debugging vs. diagnostic), the expression that failed and the filename, and line num- ber the failure happened on. The KASSERTMSG() and KDASSERTMSG() macros append to the panic(9) format string the message specified by format and its subsequent arguments, similar to printf(9) functions. SEE ALSO
config(1), options(4), CTASSERT(9), panic(9), printf(9) AUTHORS
These macros were written by Chris G. Demetriou <cgd@netbsd.org>. BSD
September 27, 2011 BSD