user/sven/linux.git/Makefile, branch v4.9.79Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.9.792018-01-31T11:55:57ZLinux 4.9.792018-01-31T11:55:57ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-31T11:55:57Zurn:sha1:6c6f924f9c6294944ee6efb1bbd8cdb853582e50Linux 4.9.782018-01-23T18:57:10ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-23T18:57:10Zurn:sha1:79584a4221253611a4d033087f373b046350df9fLinux 4.9.772018-01-17T08:39:00ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-17T08:39:00Zurn:sha1:b8cf9ff79d63a3ac5567bd7cbb9445bfed193f4dLinux 4.9.762018-01-10T08:29:55ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-10T08:29:55Zurn:sha1:7bbc6ca4887794cc44b41412a35bdfbe0cbd1c50Linux 4.9.752018-01-05T14:46:36ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-05T14:46:36Zurn:sha1:9f74755895f9b080f79384edb600a18433788adcLinux 4.9.742018-01-02T19:35:18ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-02T19:35:18Zurn:sha1:07bcb2489b96b2bd8b030822b4495e4a18c7b5dakbuild: add '-fno-stack-check' to kernel build options2018-01-02T19:35:10ZLinus Torvaldstorvalds@linux-foundation.org2017-12-30T01:34:43Zurn:sha1:b929ccccbc8c22736d1fd722da181e275465f5a6
commit 3ce120b16cc548472f80cf8644f90eda958cf1b6 upstream.
It appears that hardened gentoo enables "-fstack-check" by default for
gcc.
That doesn't work _at_all_ for the kernel, because the kernel stack
doesn't act like a user stack at all: it's much smaller, and it doesn't
auto-expand on use. So the extra "probe one page below the stack" code
generated by -fstack-check just breaks the kernel in horrible ways,
causing infinite double faults etc.
[ I have to say, that the particular code gcc generates looks very
stupid even for user space where it works, but that's a separate
issue. ]
Reported-and-tested-by: Alexander Tsoy <alexander@tsoy.me>
Reported-and-tested-by: Toralf Förster <toralf.foerster@gmx.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 4.9.732017-12-29T16:43:00ZGreg Kroah-Hartmangregkh@linuxfoundation.org2017-12-29T16:43:00Zurn:sha1:b3e88217e2f95b004da89a0ff931e1dc45d3d094Linux 4.9.722017-12-25T13:23:47ZGreg Kroah-Hartmangregkh@linuxfoundation.org2017-12-25T13:23:47Zurn:sha1:2df397931072ff4e66f9e42ae1f1630c03513ce7Linux 4.9.712017-12-20T09:07:34ZGreg Kroah-Hartmangregkh@linuxfoundation.org2017-12-20T09:07:34Zurn:sha1:b632d710149f1a638ffa6e999cfbd9ee9fbdada6