lkml.org 
[lkml]   [2009]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: possible regression with pty.c commit
On Sat, 11 Jul 2009 22:15:56 +0300
Sergey Senozhatsky <sergey.senozhatsky@mail.by> wrote:

> Hello,
> commit d945cb9cce20ac7143c2de8d88b187f62db99bdc ("pty: Rework the pty layer to use the normal buffering logic")
> seems to brake kdesu.

This looks like a timing bug in kdesu at first glance but it may be more
complex.

> close(11) = 0

We close one side of the pty/tty pair

> write(10, "stop", 4) = 4
> write(10, "\n", 1) = 1
> fcntl64(10, F_GETFL) = 0x2 (flags O_RDWR)
> read(10, 0xbf840858, 255) = -1 EIO (Input/output error) <<<<<<<<<

At this point the other side is closed, we have a hangup and the read
correctly I think gets -EIO.

I will have a look at kdesu on Monday, I've got Fedora setups here so
hopefully I can reproduce it simply.


\
 
 \ /
  Last update: 2009-07-12 00:29    [from the cache]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and my Meterkast|Read the blog