Commit 950fee84 authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen

[PATCH] i386: Terminate backtrace fallback early if unwinder stack pointer is zero

Cc: jbeulich@novell.com
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent 2b14a78c
...@@ -197,6 +197,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, ...@@ -197,6 +197,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
if (UNW_SP(&info) >= PAGE_OFFSET) { if (UNW_SP(&info) >= PAGE_OFFSET) {
ops->warning(data, "Leftover inexact backtrace:\n"); ops->warning(data, "Leftover inexact backtrace:\n");
stack = (void *)UNW_SP(&info); stack = (void *)UNW_SP(&info);
if (!stack)
return;
} else } else
ops->warning(data, "Full inexact backtrace again:\n"); ops->warning(data, "Full inexact backtrace again:\n");
} else if (call_trace >= 1) } else if (call_trace >= 1)
......
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