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Kernel Panics

Posted on 2004-09-21
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im having some trouble with my Freebsd 4.9 box

i keep getting kernel panics and i cant work out whats causing them

uname -a :

FreeBSD hostname.here.removed 4.10-STABLE FreeBSD 4.10-STABLE #0: Tue Aug  3 01:26:41 BST 2004     root@hostname.removed:/usr/src/sys/compile/Jamie  i386

these are the errors:


Sep 20 21:23:03 aftershock /kernel: Fatal trap 1: privileged instruction fault while in kernel mode
Sep 20 21:23:03 aftershock /kernel: instruction pointer = 0x8:0xc0260793
Sep 20 21:23:03 aftershock /kernel: stack pointer               = 0x10:0xd92d3e40
Sep 20 21:23:03 aftershock /kernel: frame pointer               = 0x10:0xd92d3e58
Sep 20 21:23:03 aftershock /kernel: code segment                = base 0x0, limit 0xfffff, type 0x1b
Sep 20 21:23:03 aftershock /kernel: = DPL 0, pres 1, def32 1, gran 1
Sep 20 21:23:03 aftershock /kernel: processor eflags    = interrupt enabled, resume, IOPL = 0
Sep 20 21:23:03 aftershock /kernel: current process             = 184 (perl)
Sep 20 21:23:03 aftershock /kernel: interrupt mask              = none
Sep 20 21:23:03 aftershock /kernel: trap number         = 1
Sep 20 21:23:03 aftershock /kernel: panic: privileged instruction fault

Sep 20 22:42:07 aftershock /kernel: Fatal trap 12: page fault while in kernel mode
Sep 20 22:42:07 aftershock /kernel: fault virtual address       = 0x36f58d0e
Sep 20 22:42:07 aftershock /kernel: fault code          = supervisor write, page not present
Sep 20 22:42:07 aftershock /kernel: instruction pointer = 0x8:0xc0340f7f
Sep 20 22:42:07 aftershock /kernel: stack pointer               = 0x10:0xd885ee28
Sep 20 22:42:07 aftershock /kernel: frame pointer               = 0x10:0xd885ee4c
Sep 20 22:42:07 aftershock /kernel: code segment                = base 0x0, limit 0xfffff, type 0x1b
Sep 20 22:42:07 aftershock /kernel: = DPL 0, pres 1, def32 1, gran 1
Sep 20 22:42:07 aftershock /kernel: processor eflags    = interrupt enabled, resume, IOPL = 0
Sep 20 22:42:07 aftershock /kernel: current process             = 7 (syncer)
Sep 20 22:42:07 aftershock /kernel: interrupt mask              = bio
Sep 20 22:42:07 aftershock /kernel: trap number         = 12
Sep 20 22:42:07 aftershock /kernel: panic: page fault
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Question by:OSLAdmin
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jdw_2004 earned 500 total points
ID: 12132390
That looks like bad RAM or a similar hardware problem, because they aren't the same panic.

If you have the FreeBSD sources loaded, try doing:

(assuming root permissions and csh, as obtained by "su" in a default config)
YourPrompt# cd /usr/src
YourPrompt# repeat 5 make buildworld buildkernel

This will take a long time (if it doesn't crash); let it go overnight or something.  If it consistently crashes, then you almost certainly have a hardware issue of some sort.
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