Hosts the 0x221E linux distro kernel. https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-2.6.30.y 2009-02-09T23:42:01Z 2009-02-09T23:42:01Z Tejun Heo 2009-02-09T13:17:40Z urn:sha1:60a5317ff0f42dd313094b88f809f63041568b08 Impact: stack protector for x86_32 Implement stack protector for x86_32. GDT entry 28 is used for it. It's set to point to stack_canary-20 and have the length of 24 bytes. CONFIG_CC_STACKPROTECTOR turns off CONFIG_X86_32_LAZY_GS and sets %gs to the stack canary segment on entry. As %gs is otherwise unused by the kernel, the canary can be anywhere. It's defined as a percpu variable. x86_32 exception handlers take register frame on stack directly as struct pt_regs. With -fstack-protector turned on, gcc copies the whole structure after the stack canary and (of course) doesn't copy back on return thus losing all changed. For now, -fno-stack-protector is added to all files which contain those functions. We definitely need something better. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> 2008-10-23T05:55:23Z H. Peter Anvin 2008-10-23T05:26:29Z urn:sha1:1965aae3c98397aad957412413c07e97b1bd4e64 Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 2008-10-23T05:55:20Z Al Viro 2008-08-18T01:05:42Z urn:sha1:bb8985586b7a906e116db835c64773b7a7d51663 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>