[Bug 253337] Linuxulator: glibc's pthread_getattr_np reports stack size as 124K

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253337

--- Comment #4 from Alex S <iwtcex at gmail.com> ---
Here's how this looks on Ubuntu:

xubuntu at xubuntu:~$ uname -a
Linux xubuntu 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
xubuntu at xubuntu:~$ gcc apparent_stack_size.c -pthread -o test
xubuntu at xubuntu:~$ ./test
7feaba441000-7feaba442000 rw-p 00000000 00:00 0 
7ffca0aef000-7ffca0b10000 rw-p 00000000 00:00 0                         
[stack]
7ffca0b6b000-7ffca0b6e000 r--p 00000000 00:00 0                          [vvar]
7ffca0b6e000-7ffca0b6f000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0                 
[vsyscall]
stack size = 8384512
xubuntu at xubuntu:~$ ulimit -s 3000
xubuntu at xubuntu:~$ ./test
7f07aa268000-7f07aa269000 rw-p 00000000 00:00 0 
7ffc606ee000-7ffc6070f000 rw-p 00000000 00:00 0                         
[stack]
7ffc60765000-7ffc60768000 r--p 00000000 00:00 0                          [vvar]
7ffc60768000-7ffc60769000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0                 
[vsyscall]
stack size = 3063808

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