Thread: Disabling VDSO
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allnameswereout is offline allnameswereout
2009-10-13 , 00:09
Posts: 3,397 | Thanked: 1,212 times | Joined on Jul 2008 @ Netherlands
#9
Bah, all this isn't necessary. You don't have to play in your bootloader to disable VDSO32. Its just that the setting has been renamed.

All you have to do is execute

# sysctl abi.vsyscall32=0

or if you prefer to use /proc

# echo 0>/proc/sys/abi/vsyscall32

To make this change permanent type

# echo abi.vsyscall32=0>>/etc/sysctl.conf

It will then be disabled even after reboot.

To check if VDSO32 is enabled execute

# sysctl abi.vsyscall32

or if you prefer to /proc

# cat /proc/sys/abi/vsyscall32

Note this only works on 2.6.25+ x86-64!
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Last edited by allnameswereout; 2009-10-13 at 00:15.
 

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