The DWARF unwinder stores the return address in an internal structure.
This is returned to the generic unwinder. So do not check only
ret_addr_p against the current stack pointer, but also if the address is
the return address.
This makes the unwinder to really think the addresses are reliable.
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: "H. Peter Anvin" <h...@zytor.com>
Cc: x...@kernel.org
Cc: Josh Poimboeuf <jpoim...@redhat.com>
---
arch/x86/kernel/dumpstack.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index dbce3cca94cb..963c6b60887f 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -123,7 +123,8 @@ void show_trace_log_lvl(struct task_struct *task, struct
pt_regs *regs,
continue;
}
- if (stack == ret_addr_p)
+ if (stack == ret_addr_p ||
+ (ret_addr_p && addr == *ret_addr_p))
reliable = 1;
/*
--
2.12.2
