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Re: execve E2BIG (Argument list too long)

From: Daniel Colascione
Subject: Re: execve E2BIG (Argument list too long)
Date: Wed, 30 Sep 2020 08:37:17 -0700
User-agent: AquaMail/1.26.0-1689 (build: 102600004)

On September 30, 2020 8:24:01 AM Ilkka Virta <itvirta@gmail.com> wrote:

On Wed, Sep 30, 2020 at 5:53 PM Michael Green <green@strato.de> wrote:

The included short script when run with the following command results
in execve "E2BIG (Argument list too long) errors".

* The number of arguments can be tuned down to "seq 1 23694" and it
still occurs, but any lower and it disappears.

That sounds a lot like the 128 kB hard limit Linux puts on the size of a
single argument to exec. (I know it counts for command line arguments, I
expect it also counts for env variables. They're passed in pretty much the
same way anyway.)

It might be worth asking lkml to lift this restriction

seq 1 23694 | wc  gives 131058, just a bit less than 131072. Add the
variable name and it goes over. Workaround: use another OS, or pass big
data like that in files.

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