From: Tim Sullivan <tsulliva@iex.net>
To: Brian Gerst <bgerst@didntduck.org>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: test12-pre3: paging problem
Date: Wed, 29 Nov 2000 09:37:22 -0700 [thread overview]
Message-ID: <3A2530C2.456BF661@iex.net> (raw)
In-Reply-To: <3A250F85.EF1FD067@iex.net> <3A252464.2AB55600@didntduck.org>
Brian Gerst wrote:
>
> Tim Sullivan wrote:
> >
> > Hello,
> >
> > The following occurred during startup using test12-pre3. test12-pre2
> > does not exhibit the problem.
> >
> > regards,
> >
> > -tim
> >
> > kernel: Unable to handle kernel paging request at virtual address
> > fffffffc
> > kernel: printing eip:
> > kernel: c011a41f
> > kernel: *pde = 00001063
> > kernel: *pte = 00000000
> > kernel: Oops: 0000
> > kernel: CPU: 0
> > kernel: EIP: 0010:[sys_setitimer+191/208]
> > kernel: EFLAGS: 00010246
> > kernel: eax: 00000000 ebx: cf4e1fb0 ecx: 00000000 edx: c027169d
> > kernel: esi: bffffc68 edi: cf4e1fc0 ebp: 00000000 esp: cf4e1f88
> > kernel: ds: 0018 es: 0018 ss: 0018
> > kernel: Process ntpdate (pid: 451, stackpage=cf4e1000)
> > kernel: Stack: cf4e0000 bffffd1c 00000009 bffffc70 00000000 cf4e0000
> > 400538e8 00000000
> > kernel: 00000000 40166214 00000000 00030d40 00000000 000186a0
> > c010a847 00000000
> > kernel: bffffc58 00000000 bffffd1c 00000009 bffffc70 00000068
> > 0000002b 0000002b
> > kernel: Call Trace: [system_call+51/56]
> > kernel: Code: c8 5d 83 c4 28 c3 90 90 90 90 90 90 90 90 90 90 90 83 ec
> > 44
>
> Disassemblind the code bytes, it shows up as:
> 0: c8 5d 83 c4 enter $0x835d,$0xc4
> 4: 28 c3 subb %al,%bl
> 6: 90 nop
> which is definately wrong. Moving one byte forward it becomes:
> 0: 5d popl %ebp
> 1: 83 c4 28 addl $0x28,%esp
> 4: c3 ret
> 5: 90 nop
> which a normal sequence of instructions for the end of a function. It
> looks like a branch may have been miscompiled off by one. What
> compiler/binutils are you using?
>
> --
>
> Brian Gerst
compiler = kgcc (RedHat 7)
gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
binutils = 2.10.0.18
-tim
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/
prev parent reply other threads:[~2000-11-29 17:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-29 14:15 test12-pre3: paging problem Tim Sullivan
[not found] ` <3A251361.CC904AC0@didntduck.org>
2000-11-29 15:26 ` Tim Sullivan
2000-11-29 15:44 ` Brian Gerst
2000-11-29 16:37 ` Tim Sullivan [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3A2530C2.456BF661@iex.net \
--to=tsulliva@iex.net \
--cc=bgerst@didntduck.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.