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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-10-25 08:19:59 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-10-25 08:19:59 +0100
commitbdf4e9482360a3ddc1619efbd5d1c928ede8c3fa (patch)
treeb02319e809c5b8abfca85409a11472775e27f597 /arch/arm/kernel/traps.c
parent06afb1a087d49ae0f676b2e5b9ffe5f4b3aba355 (diff)
parenteb0474544bc16a9dab53b26abd846e86ba814eb1 (diff)
downloadlinux-bdf4e9482360a3ddc1619efbd5d1c928ede8c3fa.tar.bz2
Merge branch 'misc' into for-linus
Conflicts: arch/arm/mach-integrator/integrator_ap.c
Diffstat (limited to 'arch/arm/kernel/traps.c')
-rw-r--r--arch/arm/kernel/traps.c31
1 files changed, 21 insertions, 10 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 210382555af1..7f5b99eb2c50 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -21,6 +21,7 @@
#include <linux/kdebug.h>
#include <linux/module.h>
#include <linux/kexec.h>
+#include <linux/bug.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/sched.h>
@@ -271,6 +272,8 @@ void die(const char *str, struct pt_regs *regs, int err)
spin_lock_irq(&die_lock);
console_verbose();
bust_spinlocks(1);
+ if (!user_mode(regs))
+ report_bug(regs->ARM_pc, regs);
ret = __die(str, err, thread, regs);
if (regs && kexec_should_crash(thread->task))
@@ -302,6 +305,24 @@ void arm_notify_die(const char *str, struct pt_regs *regs,
}
}
+#ifdef CONFIG_GENERIC_BUG
+
+int is_valid_bugaddr(unsigned long pc)
+{
+#ifdef CONFIG_THUMB2_KERNEL
+ unsigned short bkpt;
+#else
+ unsigned long bkpt;
+#endif
+
+ if (probe_kernel_address((unsigned *)pc, bkpt))
+ return 0;
+
+ return bkpt == BUG_INSTR_VALUE;
+}
+
+#endif
+
static LIST_HEAD(undef_hook);
static DEFINE_SPINLOCK(undef_lock);
@@ -707,16 +728,6 @@ baddataabort(int code, unsigned long instr, struct pt_regs *regs)
arm_notify_die("unknown data abort code", regs, &info, instr, 0);
}
-void __attribute__((noreturn)) __bug(const char *file, int line)
-{
- printk(KERN_CRIT"kernel BUG at %s:%d!\n", file, line);
- *(int *)0 = 0;
-
- /* Avoid "noreturn function does return" */
- for (;;);
-}
-EXPORT_SYMBOL(__bug);
-
void __readwrite_bug(const char *fn)
{
printk("%s called, but not implemented\n", fn);