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On 28/08/14 05:02 PM, Sven Vermeulen wrote: |
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> On Wed, Aug 27, 2014 at 05:34:20PM +0100, André Aparício wrote: |
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>> I encountered the same problem with qemu/kvm but can't even login, I |
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>> get random segfaults and even failed malloc assertions |
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>> in /sbin/init, /sbin/rc or /bin/login (never past this). |
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>> |
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>> But it works fine with CONFIG_PAX_MEMORY_UDEREF disabled. |
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> |
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> I am not able to reproduce this :-( |
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> |
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> Host and guest are both on 3.15.5-hardened-r2 and both have UDEREF enabled. |
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> |
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> I tried emerging boost on the guest as recommended in another post but this |
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> didn't fail. |
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> |
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> Wkr, |
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> Sven Vermeulen |
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> |
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|
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My VM has 12 CPUs but I use MAKEOPTS=-j3. Maybe this affects |
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reproducibility. |
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|
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My host is of unknown kernel, but I'm pretty sure it's not Gentoo, let |
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alone Hardened. |
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|
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Also, I am using <cpu mode="host-passthrough"/> in libvirt (equivalent |
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to -cpu host in qemu opts), so PAX detects PCID and enables strong |
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UDEREF. I will try with pax_weakuderef as soon as I get a chance to |
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reboot the VM. |
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