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| author | Pierre Labastie <pieere@linuxfromscratch.org> | 2020-05-21 07:40:38 +0000 |
|---|---|---|
| committer | Pierre Labastie <pieere@linuxfromscratch.org> | 2020-05-21 07:40:38 +0000 |
| commit | 1405c4a2c66b956950ad7eb2821db451cb1cb643 (patch) | |
| tree | e599a03117695e65f3f38ede1c9a60d445548d71 /chapter08/kernel.xml | |
| parent | aabe1face46e8f5f2aad19c297fe29a400b65755 (diff) | |
Fix kernel crash when using STACK_PROTECTOR_STRONG=y
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11852 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter08/kernel.xml')
| -rw-r--r-- | chapter08/kernel.xml | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/chapter08/kernel.xml b/chapter08/kernel.xml index 0173f7445..a31b545a9 100644 --- a/chapter08/kernel.xml +++ b/chapter08/kernel.xml @@ -54,6 +54,16 @@ kernel compilation. Do not rely on the source tree being clean after un-tarring.</para> + <!-- The following paragraph and sed should be only necessary on the 5.6 + series, but check when 5.7 is out. --> + <para>When using <envar>CONFIG_STACKPROTECTOR_STRONG=y</envar>, and + compiling with GCC 10 and later, the default optimization is too + aggressive, and generates a kernel panic when booting. This can be + fixed with:</para> + +<screen><userinput remap="pre">sed -e '/cpu_startup/a asm("");' \ + -i arch/x86/{kernel/smpboot.c,xen/smp_pv.c}</userinput></screen> + <!-- Support for compiling a keymap into the kernel is deliberately removed --> <para>Configure the kernel via a menu-driven interface. For general |