print_symbol() uses extra stack space to sprintf() symbol
information and then to feed that buffer to printk()
char buffer[KSYM_SYMBOL_LEN];
sprint_symbol(buffer, address);
printk(fmt, buffer);
Replace print_symbol() with a direct printk("%pS") call.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 +--
arch/x86/mm/mmio-mod.c | 5 ++---
2 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index b1d616d08eee..8ca8f6eb32db 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -14,7 +14,6 @@
#include <linux/capability.h>
#include <linux/miscdevice.h>
#include <linux/ratelimit.h>
-#include <linux/kallsyms.h>
#include <linux/rcupdate.h>
#include <linux/kobject.h>
#include <linux/uaccess.h>
@@ -235,7 +234,7 @@ static void __print_mce(struct mce *m)
m->cs, m->ip);
if (m->cs == __KERNEL_CS)
- print_symbol("{%s}", m->ip);
+ pr_cont("{%pS}", (void *)m->ip);
pr_cont("\n");
}
diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
index 4d434ddb75db..2c1ecf4763c4 100644
--- a/arch/x86/mm/mmio-mod.c
+++ b/arch/x86/mm/mmio-mod.c
@@ -29,7 +29,6 @@
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/io.h>
-#include <linux/kallsyms.h>
#include <asm/pgtable.h>
#include <linux/mmiotrace.h>
#include <asm/e820/api.h> /* for ISA_START_ADDRESS */
@@ -123,8 +122,8 @@ static void die_kmmio_nesting_error(struct pt_regs *regs, unsigned long addr)
pr_emerg("unexpected fault for address: 0x%08lx, last fault for address: 0x%08lx\n",
addr, my_reason->addr);
print_pte(addr);
- print_symbol(KERN_EMERG "faulting IP is at %s\n", regs->ip);
- print_symbol(KERN_EMERG "last faulting IP was at %s\n", my_reason->ip);
+ pr_emerg("faulting IP is at %pS\n", (void *)regs->ip);
+ pr_emerg("last faulting IP was at %pS\n", (void *)my_reason->ip);
#ifdef __i386__
pr_emerg("eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
regs->ax, regs->bx, regs->cx, regs->dx);
--
2.15.1
--
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