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Subject[PATCH] x86/dumpstack: fix show_stack() task pointer regression
On Tue, Sep 20, 2016 at 08:01:02AM -0700, tip-bot for Josh Poimboeuf wrote:
> Commit-ID: e18bcccd1a4ecb41e99678e002ef833586185bf1
> Gitweb: http://git.kernel.org/tip/e18bcccd1a4ecb41e99678e002ef833586185bf1
> Author: Josh Poimboeuf <jpoimboe@redhat.com>
> AuthorDate: Fri, 16 Sep 2016 14:18:16 -0500
> Committer: Ingo Molnar <mingo@kernel.org>
> CommitDate: Tue, 20 Sep 2016 08:29:34 +0200
>
> x86/dumpstack: Convert show_trace_log_lvl() to use the new unwinder

Ingo,

My apologies, I introduced a small regression with this patch -- another
rebase gone bad. Here's the fix:

---

From: Josh Poimboeuf <jpoimboe@redhat.com>
Subject: [PATCH] x86/dumpstack: fix show_stack() task pointer regression

With the following commit:

e18bcccd1a4e ("x86/dumpstack: Convert show_trace_log_lvl() to use the new unwinder")

The task pointer argument to show_stack_log_lvl() in show_stack() was
inadvertently changed to 'current'.

Fixes: e18bcccd1a4e ("x86/dumpstack: Convert show_trace_log_lvl() to use the new unwinder")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
---
arch/x86/kernel/dumpstack.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index 999de3b..9b7cf5c 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -164,7 +164,7 @@ void show_stack(struct task_struct *task, unsigned long *sp)
if (!sp && task == current)
sp = get_stack_pointer(current, NULL);

- show_stack_log_lvl(current, NULL, sp, "");
+ show_stack_log_lvl(task, NULL, sp, "");
}

void show_stack_regs(struct pt_regs *regs)
--
2.7.4
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