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parisc: Show trap name in kernel crash 

Show the real trap name when the kernel crashes.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2016-10-11 20:49:42 +02:00
parent e3b6a02816
commit 0a862485f4
3 changed files with 14 additions and 8 deletions
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1
arch/parisc/include/asm/traps.h
View File

@ -11,6 +11,7 @@ void parisc_terminate(char *msg, struct pt_regs *regs,
void die_if_kernel(char *str, struct pt_regs *regs, long err);
/* mm/fault.c */
const char *trap_name(unsigned long code);
void do_page_fault(struct pt_regs *regs, unsigned long code,
unsigned long address);
#endif

4
arch/parisc/kernel/traps.c
View File

@ -458,8 +458,8 @@ void parisc_terminate(char *msg, struct pt_regs *regs, int code, unsigned long o
}
printk("\n");
printk(KERN_CRIT "%s: Code=%d regs=%p (Addr=" RFMT ")\n",
msg, code, regs, offset);
pr_crit("%s: Code=%d (%s) regs=%p (Addr=" RFMT ")\n",
msg, code, trap_name(code), regs, offset);
show_regs(regs);
spin_unlock(&terminate_lock);

17
arch/parisc/mm/fault.c
View File

@ -204,6 +204,16 @@ static const char * const trap_description[] = {
[28] "Unaligned data reference trap",
};
const char *trap_name(unsigned long code)
{
const char *t = NULL;
if (code < ARRAY_SIZE(trap_description))
t = trap_description[code];
return t ? t : "Unknown trap";
}
/*
* Print out info about fatal segfaults, if the show_unhandled_signals
* sysctl is set:
@ -213,8 +223,6 @@ show_signal_msg(struct pt_regs *regs, unsigned long code,
unsigned long address, struct task_struct *tsk,
struct vm_area_struct *vma)
{
const char *trap_name = NULL;
if (!unhandled_signal(tsk, SIGSEGV))
return;
@ -226,10 +234,7 @@ show_signal_msg(struct pt_regs *regs, unsigned long code,
tsk->comm, code, address);
print_vma_addr(KERN_CONT " in ", regs->iaoq[0]);
if (code < ARRAY_SIZE(trap_description))
trap_name = trap_description[code];
pr_warn(KERN_CONT " trap #%lu: %s%c", code,
trap_name ? trap_name : "unknown",
pr_cont(" trap #%lu: %s%c", code, trap_name(code),
vma ? ',':'\n');
if (vma)