From: Richard Henderson <rth@twiddle.net>
To: george anzinger <george@mvista.com>
Cc: Mikael Pettersson <mikpe@csd.uu.se>,
Daniel Jacobowitz <dan@debian.org>,
Brian Gerst <bgerst@didntduck.org>,
Petr Vandrovec <VANDROVE@vc.cvut.cz>,
"Richard B. Johnson" <root@chaos.analogic.com>,
dvorak <dvorak@xs4all.nl>,
linux-kernel@vger.kernel.org
Subject: Re: Syscall changes registers beyond %eax, on linux-i386
Date: Fri, 20 Sep 2002 23:19:46 -0700 [thread overview]
Message-ID: <20020920231946.B27148@twiddle.net> (raw)
In-Reply-To: <3D8ADD05.999E4A5C@mvista.com>; from george@mvista.com on Fri, Sep 20, 2002 at 01:32:05AM -0700
On Fri, Sep 20, 2002 at 01:32:05AM -0700, george anzinger wrote:
> So, is there a problem? Yes, neither the call stub macros
> in asm/unistd.h nor those in glibc bother to list the used
> registers beyond the third ":".
No, this is not the real problem. The real problem is that if
the program receives a signal during a system call, the kernel
will return all the way up to entry.S, deliver the signal and
then restart the syscall.
Except the syscall will restart with the corrupted registers.
Hilarity ensues.
r~
next prev parent reply other threads:[~2002-09-21 6:15 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-19 17:44 Syscall changes registers beyond %eax, on linux-i386 Petr Vandrovec
2002-09-19 18:04 ` Brian Gerst
2002-09-19 18:30 ` Richard Henderson
2002-09-19 18:51 ` Brian Gerst
2002-09-19 18:57 ` Richard Henderson
2002-09-19 19:40 ` Richard B. Johnson
2002-09-19 19:41 ` Richard Henderson
2002-09-19 19:53 ` Richard B. Johnson
2002-09-19 22:46 ` J.A. Magallon
2002-09-20 12:27 ` Richard B. Johnson
2002-09-20 17:16 ` Richard Henderson
2002-09-22 1:33 ` Pavel Machek
2002-09-23 13:11 ` Richard B. Johnson
2002-09-23 18:31 ` Pavel Machek
2002-09-19 19:18 ` Richard B. Johnson
2002-09-19 19:24 ` Daniel Jacobowitz
2002-09-19 20:25 ` Mikael Pettersson
2002-09-20 8:32 ` george anzinger
2002-09-21 6:19 ` Richard Henderson [this message]
2002-09-21 8:09 ` george anzinger
2002-09-21 15:08 ` Richard Henderson
2002-09-24 18:02 ` CHECKER bate: " george anzinger
-- strict thread matches above, loose matches on Subject: below --
2002-09-19 14:45 dvorak
2002-09-19 16:11 ` Richard B. Johnson
2002-09-19 17:09 ` Brian Gerst
2002-09-19 17:22 ` Richard B. Johnson
2002-09-19 17:51 ` Brian Gerst
2002-09-19 18:30 ` Richard B. Johnson
2002-09-19 17:59 ` dvorak
2002-09-19 18:32 ` Richard B. Johnson
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=20020920231946.B27148@twiddle.net \
--to=rth@twiddle.net \
--cc=VANDROVE@vc.cvut.cz \
--cc=bgerst@didntduck.org \
--cc=dan@debian.org \
--cc=dvorak@xs4all.nl \
--cc=george@mvista.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mikpe@csd.uu.se \
--cc=root@chaos.analogic.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).