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| author | Tianling Shen <cnsztl@immortalwrt.org> | 2023-05-16 12:38:53 +0800 |
|---|---|---|
| committer | Christian Lamparter <chunkeey@gmail.com> | 2023-05-18 16:17:52 +0200 |
| commit | c07038da27cefa5a93e433909b9aca594386ddc1 (patch) | |
| tree | a134c0037d935a568694cebe8a1124f0e3d603e1 /config | |
| parent | 8217f02a1c5e2396f083793575de2e79811842e8 (diff) | |
| download | upstream-c07038da27cefa5a93e433909b9aca594386ddc1.tar.gz upstream-c07038da27cefa5a93e433909b9aca594386ddc1.tar.bz2 upstream-c07038da27cefa5a93e433909b9aca594386ddc1.zip | |
kernel: add MODULE_ALLOW_BTF_MISMATCH option
BTF mismatch can occur for a separately-built module even when the ABI
is otherwise compatible and nothing else would prevent successfully
loading. Add a new config to control how mismatches are handled. By
default, preserve the current behavior of refusing to load the
module. If MODULE_ALLOW_BTF_MISMATCH is enabled, load the module but
ignore its BTF information.
Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
Diffstat (limited to 'config')
| -rw-r--r-- | config/Config-kernel.in | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/config/Config-kernel.in b/config/Config-kernel.in index 3a2189d63a..6c5e6a967a 100644 --- a/config/Config-kernel.in +++ b/config/Config-kernel.in @@ -373,6 +373,16 @@ config KERNEL_DEBUG_INFO_BTF Required to run BPF CO-RE applications. +config KERNEL_MODULE_ALLOW_BTF_MISMATCH + bool "Allow loading modules with non-matching BTF type info" + depends on KERNEL_DEBUG_INFO_BTF + help + For modules whose split BTF does not match vmlinux, load without + BTF rather than refusing to load. The default behavior with + module BTF enabled is to reject modules with such mismatches; + this option will still load module BTF where possible but ignore + it when a mismatch is found. + config KERNEL_DEBUG_INFO_REDUCED bool "Reduce debugging information" default y |