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Diffstat (limited to 'arch/arm/kernel/traps.c')
-rw-r--r--arch/arm/kernel/traps.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index dbf0923e8d76..172ee18ff124 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -36,7 +36,13 @@
#include <asm/system_misc.h>
#include <asm/opcodes.h>
-static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" };
+static const char *handler[]= {
+ "prefetch abort",
+ "data abort",
+ "address exception",
+ "interrupt",
+ "undefined instruction",
+};
void *vectors_page;
@@ -56,7 +62,7 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long);
void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
{
#ifdef CONFIG_KALLSYMS
- printk("[<%08lx>] (%pS) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
+ printk("[<%08lx>] (%ps) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
#else
printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
#endif
@@ -425,9 +431,10 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
instr2 = __mem_to_opcode_thumb16(instr2);
instr = __opcode_thumb32_compose(instr, instr2);
}
- } else if (get_user(instr, (u32 __user *)pc)) {
+ } else {
+ if (get_user(instr, (u32 __user *)pc))
+ goto die_sig;
instr = __mem_to_opcode_arm(instr);
- goto die_sig;
}
if (call_undef_hook(regs, instr) == 0)
@@ -509,9 +516,10 @@ static inline int
__do_cache_op(unsigned long start, unsigned long end)
{
int ret;
- unsigned long chunk = PAGE_SIZE;
do {
+ unsigned long chunk = min(PAGE_SIZE, end - start);
+
if (signal_pending(current)) {
struct thread_info *ti = current_thread_info();