prctl(0x8) -> EINVAL [Was: 2.6.25-rc3-mm1]

[Jiri Slaby]

On 03/04/2008 10:19 AM, Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.25-rc3/2.6.25-rc3-mm1/
> +capabilities-implement-per-process-securebits.patch

This probably causes userspace damage:

dbus:
prctl(0x8, 0x1, 0, 0, 0)                = -1 EINVAL (Invalid argument)

named:
named: -u with Linux threads not supported: requires kernel support for 
prctl(PR_SET_KEEPCAPS)
prctl(0x8, 0x1, 0, 0, 0)          = -1 EINVAL (Invalid argument)

ntpd:
prctl(0x8, 0x1, 0xffffffffffffffa8, 0x1, 0) = -1 EINVAL (Invalid argument)
prctl(0x8, 0x1, 0, 0, 0)          = -1 EINVAL (Invalid argument)

$ grep CONFIG_SECURITY .config
# CONFIG_SECURITY is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
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