On Wed, 2004-12-22 11:19:06 +0100, moreau francis <francis_moreau2000@xxxxxxxx> wrote in message <20041222101906.27137.qmail@xxxxxxxxxxxxxxxxxxxxxxxxxxx>: > > > CPU 0 Unable to handle kernel paging request at > > virtual address 00000004, epc =4 > > Well it suggests me that your driver is trying to > access a really nasty pointer: 0x00000004... > How did you get this address ? From user space ? Accesses to nearly NULL are normally structure accesses where a pointer to a given struct was supplied as a NULL pointer. So an access to 0x00000004 is most probably an access to the second element of a struct, given/expected that all fields are usually 4-byte aligned. >From looking at ./kernel/irq/manage.c:setup_irq(), I guess that you supply NULL as the "struct irqaction *", which is the 2nd argument of setup_irq(). It's 2nd structure element is "flags" then... This is the first thing accessed by the "new" pointer in setup_irq(). MfG, JBG -- Jan-Benedict Glaw jbglaw@xxxxxxxxxx . +49-172-7608481 _ O _ "Eine Freie Meinung in einem Freien Kopf | Gegen Zensur | Gegen Krieg _ _ O fuer einen Freien Staat voll Freier BÃrger" | im Internet! | im Irak! O O O ret = do_actions((curr | FREE_SPEECH) & ~(NEW_COPYRIGHT_LAW | DRM | TCPA));
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