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

From Ingo Molnar <mingo@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCHv8 resend 2/2] selftest/x86: add mremap vdso test
Date 2016-05-16 16:00 +0200
Message-ID <rzrdU-7Kg-29@gated-at.bofh.it> (permalink)
References <rxgcV-3iL-9@gated-at.bofh.it> <rxgcW-3iL-11@gated-at.bofh.it>
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* Dmitry Safonov <dsafonov@virtuozzo.com> 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?

Thanks,

	Ingo

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Re: [PATCHv8 resend 2/2] selftest/x86: add mremap vdso test Ingo Molnar <mingo@kernel.org> - 2016-05-16 16:00 +0200
  Re: [PATCHv8 resend 2/2] selftest/x86: add mremap vdso test Dmitry Safonov <dsafonov@virtuozzo.com> - 2016-05-16 18:50 +0200
    Re: [PATCHv8 resend 2/2] selftest/x86: add mremap vdso test Andy Lutomirski <luto@amacapital.net> - 2016-05-16 20:30 +0200

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