bug#7317: Bug in SLEEP command (original) (raw)

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From: Eric Blake
Subject: bug#7317: Bug in SLEEP command
Date: Tue, 02 Nov 2010 10:41:40 -0600
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100827 Red Hat/3.1.3-1.el6 Mnenhy/0.8.3 Thunderbird/3.1.3

On 11/02/2010 09:46 AM, Андрей Передрий wrote:

Hello guys!

I found a bug in 'sleep' command.

As you can see - 'sleep' was terminated by himself after 24 days, 20 hours, 26 minutes and 33 seconds. 24243600 + 203600 + 2660 + 33 = 2073600 + 72000 + 1560 + 33 = 2147193 seconds It seems like overflow. coreutils 6.10-6 Debian 5.0.6

Is your system 32-bit or 64-bit? It makes a difference in determining whether there is a bug in the OS sleep primitives (for example, we know that 64-bit Linux has a bug where nanosleep with an extremely large value will cause the kernel to overflow and sleep for the wrong amount of time, but coreutils has workarounds in place for that).

Also, consider upgrading; the latest stable coreutils release is 8.6, and there have been some gnulib fixes in the meantime to improve the robustness of the sleep workarounds in use by coreutils.

-- Eric Blake address@hidden +1-801-349-2682 Libvirt virtualization library http://libvirt.org

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