Re-visiting SKIP_TEST_BOGUS_ADDR in tests/ipc_msg.c

[Dmitry V. Levin]

On Fri, Sep 11, 2020 at 06:10:35PM +0800, Ruinland ChuanTzu Tsai wrote:
> Hi all,
> 
> In glibc's 2.32 implementation, the syscall wrapper code now will ac-
> cess the `buf` for transforming data types into kernel desired ones :
> 
> https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/msgctl.c;h=0776472d5e01dea3d4a90e5f025f5074e10d0250;hb=HEAD
> 
> which is introduced in the commit 3283f711 :
> https://sourceware.org/git/?p=glibc.git;a=commit;f=sysdeps/unix/sysv/linux/msgctl.c;h=3283f711132eaadc4f04bd8c1d84c910c29ba066
> 
> This will definitely triggers the segmentation fault in user space
> first instead of triggering EFAULT inside Linux kernel on _every_
> platform.
> 
> So I'm thinking whether we should either enforce` SKIP_TEST_BOGUS_ADDR`
> as default now or discuss this behavior with glibc developers ?

I'd suggest skipping that part of the test on glibc >= 2.32 as well.


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ldv