Re: [PATCHv8 resend 2/2] selftest/x86: add mremap vdso test

From: Dmitry Safonov
Date: Mon May 16 2016 - 12:41:54 EST


On 05/16/2016 04:54 PM, Ingo Molnar wrote:

* Dmitry Safonov <dsafonov@xxxxxxxxxxxxx> wrote:

Should print on success:
[root@localhost ~]# ./test_mremap_vdso_32
AT_SYSINFO_EHDR is 0xf773f000
[NOTE] Moving vDSO: [f773f000, f7740000] -> [a000000, a001000]
[OK]
Or segfault if landing was bad (before patches):
[root@localhost ~]# ./test_mremap_vdso_32
AT_SYSINFO_EHDR is 0xf774f000
[NOTE] Moving vDSO: [f774f000, f7750000] -> [a000000, a001000]
Segmentation fault (core dumped)

Can the segfault be caught and recovered from, to print a proper failure message?

Will add segfault handler, thanks.