From: Grant Grundler <grundler@dsl2.external.hp.com>
To: "Rafael E. Herrera" <raffo@neuronet.pitt.edu>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] EISA 100/10 add-on card causes kernel BUG
Date: Sat, 16 Mar 2002 11:42:31 -0700 [thread overview]
Message-ID: <20020316184231.482C6482C@dsl2.external.hp.com> (raw)
In-Reply-To: Message from "Rafael E. Herrera" <raffo@neuronet.pitt.edu> of "Sat, 16 Mar 2002 00:50:13 EST." <3C92DD15.4060008@neuronet.pitt.edu>
"Rafael E. Herrera" wrote:
...
> WARNING! Stack pointer and cr30 do not correspond!
A few times, this error (it's not a warning) meant the
driver was attempting to access user space data directly.
This is wrong and unfortunately it *usually* (but not always)
works on x86 arch. The right way to access user space data
is via copy_from_user() or write asm code that explicitly
references Space Registers (eg sr3).
grant
next prev parent reply other threads:[~2002-03-16 18:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-16 5:50 [parisc-linux] EISA 100/10 add-on card causes kernel BUG Rafael E. Herrera
2002-03-16 18:42 ` Grant Grundler [this message]
2002-03-16 21:39 ` Matthew Wilcox
2002-03-17 5:38 ` Grant Grundler
2002-03-17 13:43 ` Matthew Wilcox
2002-03-17 16:59 ` Grant Grundler
2002-03-22 3:16 ` [parisc-linux] EISA 100/10 add-on card on a 715/80 Rafael E. Herrera
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