x86/orc: Make it callthunk aware

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Callthunks addresses on the stack would confuse the ORC unwinder. Handle
them correctly and tell ORC to proceed further down the stack.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220915111148.511637628@infradead.org

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Peter Zijlstra 2022-09-15 13:11:33 +02:00

parent f138918162

commit 396e0b8e09

3 changed files with 38 additions and 1 deletions

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5

arch/x86/include/asm/alternative.h

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13

arch/x86/kernel/callthunks.c

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21

arch/x86/kernel/unwind_orc.c

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