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authorJo-Philipp Wich <jo@mein.io>2016-06-24 15:04:27 +0200
committerJo-Philipp Wich <jo@mein.io>2016-06-24 15:59:36 +0200
commitcb7aa4b1fee688342950d02195b927962295514e (patch)
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parentd4ede1c1189abff6f52887179878cb950a4e47a0 (diff)
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ebtables: fix segmentation fault due to uninitialized extension data
The ebtables code relies on the `-nostartfiles` linker argument to execute the extension modules' `_init()` functions automatically which is not working reliably across all supported targets and gcc versions. Running an ebtables executable linked this way just crashes with a segmentation fault at runtime on program startup, e.g. on ARM architectures. In order to fix the issue ... - remove the use of the -nostartfiles linker flag - rename the init procedures to a generic name without implicit semantics - explicitely annotate those init procedures as constructors The patch has been taken from the Alpine Linux distribution at http://git.alpinelinux.org/cgit/aports/tree/main/ebtables/fix-extension-init.patch Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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