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Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c

From David Miller <davem@davemloft.net>
Newsgroups linux.kernel
Subject Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c
Date 2017-06-22 00:00 +0200
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References <tUVvX-3sm-3@gated-at.bofh.it> <tUVvX-3sm-1@gated-at.bofh.it> <tUVFD-3xy-11@gated-at.bofh.it>
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From: Michael D <michael.j.dilmore@gmail.com>
Date: Wed, 21 Jun 2017 22:41:07 +0100

> I don't think you can stop it being dereferenced... you just need to
> prevent an attacker from exploiting the null pointer dereference
> vulnerability right? And this is done by returning the function right
> away?

What's all of this about an "attacker"?

If there is a bug, we dererence a NULL pointer, and we should
fix that bug.

The BUG_ON() helps us see where the problem is while at the
same time stopping the kernel before the NULL deref happens.

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Thread

[PATCH] Convert BUG_ON to WARN_ON in bond_options.c Michael J Dilmore <michael.j.dilmore@gmail.com> - 2017-06-21 20:10 +0200
  Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Jay Vosburgh <jay.vosburgh@canonical.com> - 2017-06-21 20:40 +0200
    Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c David Miller <davem@davemloft.net> - 2017-06-21 23:40 +0200
      Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Michael D <michael.j.dilmore@gmail.com> - 2017-06-21 23:50 +0200
        Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c David Miller <davem@davemloft.net> - 2017-06-22 00:00 +0200
          Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Michael J Dilmore <michael.j.dilmore@gmail.com> - 2017-06-22 00:30 +0200
            Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Jay Vosburgh <jay.vosburgh@canonical.com> - 2017-06-22 00:40 +0200
              Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Michael J Dilmore <michael.j.dilmore@gmail.com> - 2017-06-22 01:10 +0200
                Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Michal Kubecek <mkubecek@suse.cz> - 2017-06-22 10:10 +0200
              Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Bjørn Mork <bjorn@mork.no> - 2017-06-22 10:20 +0200
          Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Jay Vosburgh <jay.vosburgh@canonical.com> - 2017-06-22 00:40 +0200
        Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c David Miller <davem@davemloft.net> - 2017-06-22 00:00 +0200
    Re: [PATCH] Convert BUG_ON to WARN_ON in bond_options.c Michael D <michael.j.dilmore@gmail.com> - 2017-06-21 23:40 +0200

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