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[PATCH] i386: Terminate backtrace fallback early if unwinder stack pointer is zero
[deliverable/linux.git]
/
arch
/
i386
/
kernel
/
traps.c
diff --git
a/arch/i386/kernel/traps.c
b/arch/i386/kernel/traps.c
index 4ced4285163bd2b3d9f929593452384313e02ba9..86fa7e47f301a15184a8318b0e313711f1e8b4b4 100644
(file)
--- a/
arch/i386/kernel/traps.c
+++ b/
arch/i386/kernel/traps.c
@@
-197,6
+197,8
@@
void dump_trace(struct task_struct *task, struct pt_regs *regs,
if (UNW_SP(&info) >= PAGE_OFFSET) {
ops->warning(data, "Leftover inexact backtrace:\n");
stack = (void *)UNW_SP(&info);
+ if (!stack)
+ return;
} else
ops->warning(data, "Full inexact backtrace again:\n");
} else if (call_trace >= 1)
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