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Andrey Ryabinin
9ddf82521c
KASan uses constructors for initializing redzones for global variables. Globals instrumentation in GCC 4.9.2 produces constructors with priority (.init_array.00099) Currently kernel ignores such constructors. Only constructors with default priority supported (.init_array) This patch adds support for constructors with priorities. For kernel image we put pointers to constructors between __ctors_start/__ctors_end and do_ctors() will call them on start up. For modules we merge .init_array.* sections into resulting .init_array. Module code properly handles constructors in .init_array section. Signed-off-by: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Konstantin Serebryany <[email protected]> Cc: Dmitry Chernenkov <[email protected]> Signed-off-by: Andrey Konovalov <[email protected]> Cc: Yuri Gribov <[email protected]> Cc: Konstantin Khlebnikov <[email protected]> Cc: Sasha Levin <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: David Rientjes <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
23 lines
833 B
Plaintext
23 lines
833 B
Plaintext
/*
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* Common module linker script, always used when linking a module.
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* Archs are free to supply their own linker scripts. ld will
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* combine them automatically.
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*/
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SECTIONS {
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/DISCARD/ : { *(.discard) }
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__ksymtab 0 : { *(SORT(___ksymtab+*)) }
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__ksymtab_gpl 0 : { *(SORT(___ksymtab_gpl+*)) }
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__ksymtab_unused 0 : { *(SORT(___ksymtab_unused+*)) }
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__ksymtab_unused_gpl 0 : { *(SORT(___ksymtab_unused_gpl+*)) }
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__ksymtab_gpl_future 0 : { *(SORT(___ksymtab_gpl_future+*)) }
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__kcrctab 0 : { *(SORT(___kcrctab+*)) }
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__kcrctab_gpl 0 : { *(SORT(___kcrctab_gpl+*)) }
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__kcrctab_unused 0 : { *(SORT(___kcrctab_unused+*)) }
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__kcrctab_unused_gpl 0 : { *(SORT(___kcrctab_unused_gpl+*)) }
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__kcrctab_gpl_future 0 : { *(SORT(___kcrctab_gpl_future+*)) }
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. = ALIGN(8);
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.init_array 0 : { *(SORT(.init_array.*)) *(.init_array) }
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}
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