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From: "aurelien at aurel32 dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/26248] Incorrect argument types for INLINE_SETXID_SYSCALL
Date: Thu, 16 Jul 2020 08:36:11 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26248

Aurelien Jarno <aurelien at aurel32 dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aurelien at aurel32 dot net

--- Comment #2 from Aurelien Jarno <aurelien at aurel32 dot net> ---
Created attachment 12703
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D12703&action=3Ded=
it
Reproducer for the issue

Please find attached a small reproducer for the issue. Compile it with "gcc
-mx32 -o setgroups-x32 setgroups-x32.c -lpthread". Running it as root retur=
ns:

# ./setgroups-x32=20
setgroups failed: Bad address

It runs successfully with commit df76ff3a446a787a95cf74cb15c285464d73a93d
reverted.

(Note that this commit has been backported in 2.30 and 2.31).

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