x86: Fix __get_wchan() for !STACKTRACE

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Use asm/unwind.h to implement wchan, since we cannot always rely on
STACKTRACE=y.

Fixes: bc9bbb8173 ("x86: Fix get_wchan() to support the ORC unwinder")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20211022152104.137058575@infradead.org

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Peter Zijlstra 2021-10-22 16:53:02 +02:00

parent 55409ac5c3

commit 5d1ceb3969

1 changed files with 14 additions and 3 deletions

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arch/x86/kernel/process.c

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