user/sven/linux.git/Makefile, branch v3.18.98Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v3.18.982018-03-03T09:17:11ZLinux 3.18.982018-03-03T09:17:11ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-03-03T09:17:11Zurn:sha1:7c017f897e601aced95b71521bb0eb58af9002d5Linux 3.18.972018-02-28T09:16:18ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-02-28T09:16:18Zurn:sha1:43a69271f55a952895915b69f6c50c90c4abdbcdLinux 3.18.962018-02-25T10:01:21ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-02-25T10:01:21Zurn:sha1:f8f8e8c5bbed6c3941845a1b7956bd893818f29fLinux 3.18.952018-02-16T19:14:46ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-02-16T19:14:46Zurn:sha1:0c946219398a3108a9fe8dbc5096586bdcc797d6Linux 3.18.942018-02-07T19:07:58ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-02-07T19:07:58Zurn:sha1:cde3537bd1098cd4df322c397ef016015890913cLinux 3.18.932018-01-31T13:46:16ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-31T13:46:16Zurn:sha1:90aaf2f25609f99b63fcbed280716f80b4bc5f56Linux 3.18.922018-01-17T08:29:32ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-17T08:29:32Zurn:sha1:a5d35deca214e095bf9d1745aa6c00dd7ced0517Linux 3.18.912018-01-02T19:05:10ZGreg Kroah-Hartmangregkh@linuxfoundation.org2018-01-02T19:05:10Zurn:sha1:788ccf7552c82179135470473d9035f7c8b0b188kbuild: add '-fno-stack-check' to kernel build options2018-01-02T19:04:58ZLinus Torvaldstorvalds@linux-foundation.org2017-12-30T01:34:43Zurn:sha1:20a0462fffafa1d549e93c16d5b9749ed5441e99
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 3.18.902017-12-25T13:20:09ZGreg Kroah-Hartmangregkh@linuxfoundation.org2017-12-25T13:20:09Zurn:sha1:8da23652fa4353a2e5281f444aeaa639b452630a