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From: walt <w41ter@gmail.com>
To: Al Viro <viro@ZenIV.linux.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: "Switch !O_CREAT case to use of do_last()" causes segfault in glibc
Date: Sat, 06 Mar 2010 10:20:41 -0800	[thread overview]
Message-ID: <4B929CF9.8010506@gmail.com> (raw)
In-Reply-To: <20100306180313.GE30031@ZenIV.linux.org.uk>

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) ---

  reply	other threads:[~2010-03-06 18:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-06 17:43 "Switch !O_CREAT case to use of do_last()" causes segfault in glibc walt
2010-03-06 17:59 ` Al Viro
2010-03-06 18:03   ` Al Viro
2010-03-06 18:20     ` walt [this message]
2010-03-06 18:24       ` Al Viro
2010-03-06 18:32       ` Al Viro
2010-03-06 18:41         ` Al Viro

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