[Pkg-zsh-devel] Bug#859923: linux-image-4.9.0-2-amd64: mmap system call problem
ben at decadent.org.uk
Wed Apr 12 17:02:04 UTC 2017
Control: severity -1 normal
Control: clone -1 -2
Control: retitle -1 zshbuiltins(1): Explain what data segment means for ulimit
Control: reassign -1 zsh
Control: retitle -2 bash(1): Explain what data segment means for ulimit
Control: reassign -2 bash
On Wed, 2017-04-12 at 10:07 +0200, Fernando Santagata wrote:
> Right now is at its default state:
> -d: data seg size (kbytes) 131072
No, the default is unlimited.
> previously I tried to increase it to 200000, but it didn't work.
> I guess the problem is with the heap, not the data segment.
The 'data segment' includes the heap. From the setrlimit(2) manual
The maximum size of the process's data segment (initialized
data, uninitialized data, and heap). This limit affects calls
to brk(2) and sbrk(2), which fail with the error ENOMEM upon
encountering the soft limit of this resource.
Looking at the implementation, I can see that it applies to all memory
mappings that are writable, not shared and not specified as stack. I
think that the above description is close enough to that.
It looks like you're using zsh, for which the manual page says:
-d Kilobytes on the size of the data segment.
While the bash manual page says similarly:
-d The maximum size of a process's data segment
These could both benefit from a longer description of 'data segment'.
I'm not a reverse psychological virus. Please don't copy me into your
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