linux-kernel - [PATCH] um: Fix _print

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Date:   Sun, 25 Dec 2016 23:11:05 +0100
From:   Richard Weinberger <richard@....at>
To:     user-mode-linux-devel@...ts.sourceforge.net
Cc:     user-mode-linux-user@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Richard Weinberger <richard@....at>
Subject: [PATCH] um: Fix _print_addr()

Recent changes to printk() broke UML's stack trace
output. Kill the root of the problem by using a single
printk() statement.

Signed-off-by: Richard Weinberger <richard@....at>
---
 arch/um/kernel/sysrq.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
index aa1b56f5ac68..18eddf677ec6 100644
--- a/arch/um/kernel/sysrq.c
+++ b/arch/um/kernel/sysrq.c
@@ -17,10 +17,8 @@
 
 static void _print_addr(void *data, unsigned long address, int reliable)
 {
-	pr_info(" [<%08lx>]", address);
-	pr_cont(" %s", reliable ? "" : "? ");
-	print_symbol("%s", address);
-	pr_cont("\n");
+	pr_info(" [<%08lx>] %s%pF\n", address, reliable ? "" : "? ",
+		(void *)address);
 }
 
 static const struct stacktrace_ops stackops = {
-- 
2.10.2