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Commit 19e617aa authored by Prateek Sood's avatar Prateek Sood Committed by Gerrit - the friendly Code Review server
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kasan: disable kasan during unwind_frame() 



Disable kasan during unwind_frame() as current version
of LLVM is not supporting following compiler attribute:
__attribute__((no_sanitize("address"))).

Change-Id: I600efd6c68efc3dbf4f6ed2acbd320f8c6038b69
Signed-off-by: default avatarPrateek Sood <prsood@codeaurora.org>
parent c31a9282

arch/arm64/kernel/stacktrace.c

+3 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
#include <linux/sched/debug.h>

#include <linux/sched/task_stack.h>

#include <linux/stacktrace.h>

#include <linux/kasan.h>



#include <asm/irq.h>

#include <asm/stack_pointer.h>
@@ -53,8 +54,10 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame) 
	if (!on_accessible_stack(tsk, fp))

		return -EINVAL;



	kasan_disable_current();

	frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp));

	frame->pc = READ_ONCE_NOCHECK(*(unsigned long *)(fp + 8));

	kasan_enable_current();



#ifdef CONFIG_FUNCTION_GRAPH_TRACER

	if (tsk->ret_stack &&