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problem with code segment. not a valid code segment!

http://f.osdev.org/viewtopic.php?t=25451

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problem with code segment. not a valid code segment!

Posted: Thu Jun 14, 2012 8:04 am
by hegde1997

Code: Select all

00076668201e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076669718e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076671235e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076672752e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076674269e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076675786e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076677303e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076678820e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076680337e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076681854e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076683371e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076684888e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076686405e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076687922e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076689439e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076690956e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076692473e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076693990e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076695507e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076697024e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076698541e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076700058e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076701575e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076703092e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076704609e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076706126e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076707643e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076709160e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076710677e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076712194e[CPU0 ] fetch_raw_descriptor: GDT: index (af) 15 > limit (27)
00076714301e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076716021e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076717741e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076719461e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076721181e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076722901e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076724621e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076726341e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076728061e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076729781e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076731501e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076733221e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076734941e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076736661e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076738381e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076740101e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076741821e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076743541e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076745261e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076746981e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076748701e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076750421e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076752141e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076753861e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076755581e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076757301e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076759611e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076761331e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076763051e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076764771e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076766491e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076768211e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076769931e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076771651e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076773371e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076775091e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076776811e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076778531e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076780251e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076781971e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076783691e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076785411e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076787131e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076788851e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076790571e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076792291e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076794011e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076795731e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076797451e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076799171e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076800891e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076802611e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076804921e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076806641e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076808361e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076810081e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076811801e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076813521e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076815241e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076816961e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076818681e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076820401e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076822121e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076823841e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076825561e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076827281e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076829001e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076830721e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076832441e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076834161e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076835881e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076837601e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076839321e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076841041e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076842761e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076844481e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076846201e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076847921e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076850231e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076851951e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076853671e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076855391e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076857111e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076858831e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076860551e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076862271e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076863991e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076865711e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076867431e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076869151e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076870871e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076872591e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076874311e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076876031e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076877751e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076879471e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076881191e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076882911e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076884631e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076886351e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076888071e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076889791e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076891511e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076893231e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076895541e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076897261e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076898981e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076900701e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076902421e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076904141e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076905861e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076907581e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076909301e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076911021e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076912741e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076914461e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076916181e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076917901e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076919621e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076921341e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076923061e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076924781e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076926501e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076928221e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076929941e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076931661e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076933381e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076935101e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076936821e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076938541e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076940851e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076942571e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076944291e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076946011e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076947731e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076949451e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076951171e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076952891e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076954611e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076956331e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076958051e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076959771e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076961491e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076963211e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076964931e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076966651e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076968371e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076970091e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076971811e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076973531e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00076975251e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00077001641e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00077003361e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00077005081e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00077006801e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00077008521e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00077010241e[CPU0 ] check_cs(0x11ad): not a valid code segment !
00077011961e[CPU0 ] check_cs(0x11ad): not a valid code segment !
in bochs i am getting hell lot of these stmts. please help.
during setting up gdt i did 0x08:flush the way shown in few tutorials and gs,es,ds and fs have value 0x10.

thank you in advance.

Re: problem with code segment. not a valid code segment!

Posted: Thu Jun 14, 2012 12:22 pm
by AJ
Hi,

Any chance of seeing a couple of relevant code-snippets from where you do this? On the face of it, you are attempting to load a segment register with 0xAF, where your GDT limit is 0x27.

If you are relying on values passed on the stack for segment register loading, is (E/R)SP where you would expect?

Cheers,
Adam

Re: problem with code segment. not a valid code segment!

Posted: Thu Jun 14, 2012 12:35 pm
by AJ
Locked along with the other topic. Duplicate thread. It's a stack alignment problem in your IRQ handler because it only happens when you enable interrupts - and IMO that's quite a generous hint!

Cheers,
Adam
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