linux-kernel - Re: "Switch !O_CREAT case to use of do

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Message-ID: <4B929CF9.8010506@gmail.com>
Date:	Sat, 06 Mar 2010 10:20:41 -0800
From:	walt <w41ter@...il.com>
To:	Al Viro <viro@...IV.linux.org.uk>
CC:	linux-kernel@...r.kernel.org
Subject: Re: "Switch !O_CREAT case to use of do_last()" causes segfault in
 glibc

On 03/06/2010 10:03 AM, Al Viro wrote:

> _Really_ interesting; it doesn't look like an oops - smells like an attempt
> to do opendir() that fails for some reason, goes unnoticed and resulting
> FILE * (i.e. NULL) is fed to readdir()?
>
> What does it attempt to open?

Ah, this may help:

open("/usr/share/zoneinfo/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 47
open("/usr/share/zoneinfo/MST7MDT", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 48
open("/usr/share/zoneinfo/MST7MDT/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1 ENOTDIR (Not a directory)
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
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