From: Brian Millar <D00144121@student.dkit.ie>
To: "zsh-workers@zsh.org" <zsh-workers@zsh.org>
Subject: Possible Bug
Date: Mon, 31 Aug 2015 21:30:34 +0000 [thread overview]
Message-ID: <AM2PR03MB0980E6D5549A6ABD3EB9D43BEA6B0@AM2PR03MB0980.eurprd03.prod.outlook.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 872 bytes --]
Hi, I think I may have discovered a bug in ZSH.
I was trying to install a prompt theme and I mixed things up moved things and named things wrong.
This resulted in the file wanted by the set_prompt actually being a directory.
ZSH would crash on start, if I ran it on top of another shell I could see the error was "set_prompt:100: fatal error: out of memory".
I traced it and found that the open() syscall ran on the directory, the result was passed to lseek() with argument SEEK_END which I don't think makes any sense for a directory.
lseek() returned an astronomically huge value which was passed to mmap() as bytes to allocate. Thats when the crash happens.
I talked to some kernel folks who say you should check that the file coming from open() is not anything other than a normal file.
If this is not a ZSH bug I'm sorry for wasting your time.
next reply other threads:[~2015-08-31 21:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-31 21:30 Brian Millar [this message]
2015-09-01 5:53 ` Bart Schaefer
2015-09-01 12:02 ` Brian Millar
2015-09-01 20:51 ` Peter Stephenson
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