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Groups > linux.kernel > #1321074

Re: x86: Hardware breakpoints are not always triggered

From Paolo Bonzini <pbonzini@redhat.com>
Newsgroups linux.kernel
Subject Re: x86: Hardware breakpoints are not always triggered
Date 2016-01-28 22:30 +0100
Message-ID <qW2iD-UG-27@gated-at.bofh.it> (permalink)
References <qVQhs-Jf-3@gated-at.bofh.it> <qW1Pz-ui-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 28/01/2016 21:53, Oleg Nesterov wrote:
> > We use hardware breakpoints in CRIU and we found that sometimes we set
> > a break-point, but a process doesn't stop on it.
> 
> reproduced, and this certainly looks like kvm bug to me.

Yes, in all likelihood.  Thanks, I'll reproduce and look for a fix.

Paolo

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Thread

x86: Hardware breakpoints are not always triggered Andrey Wagin <avagin@gmail.com> - 2016-01-28 09:40 +0100
  Re: x86: Hardware breakpoints are not always triggered Jan Kiszka <jan.kiszka@siemens.com> - 2016-01-28 12:10 +0100
  Re: x86: Hardware breakpoints are not always triggered Oleg Nesterov <oleg@redhat.com> - 2016-01-28 22:00 +0100
    Re: x86: Hardware breakpoints are not always triggered Paolo Bonzini <pbonzini@redhat.com> - 2016-01-28 22:30 +0100
    Re: x86: Hardware breakpoints are not always triggered Oleg Nesterov <oleg@redhat.com> - 2016-01-28 23:10 +0100
  Re: x86: Hardware breakpoints are not always triggered Paolo Bonzini <pbonzini@redhat.com> - 2016-01-28 22:40 +0100
    Re: x86: Hardware breakpoints are not always triggered Andrey Wagin <avagin@gmail.com> - 2016-01-28 23:50 +0100
      Re: [CRIU] x86: Hardware breakpoints are not always triggered Andrew Vagin <avagin@virtuozzo.com> - 2016-01-29 23:30 +0100
        Re: [CRIU] x86: Hardware breakpoints are not always triggered Paolo Bonzini <pbonzini@redhat.com> - 2016-01-31 12:10 +0100
          Re: [CRIU] x86: Hardware breakpoints are not always triggered Nadav Amit <nadav.amit@gmail.com> - 2016-02-03 19:20 +0100
            Re: [CRIU] x86: Hardware breakpoints are not always triggered Nadav Amit <nadav.amit@gmail.com> - 2016-02-04 00:40 +0100
              Re: [CRIU] x86: Hardware breakpoints are not always triggered Paolo Bonzini <pbonzini@redhat.com> - 2016-02-04 12:30 +0100

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