diff options
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/traps.c | 33 | ||||
| -rw-r--r-- | arch/ia64/mm/fault.c | 8 |
2 files changed, 40 insertions, 1 deletions
diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c index 1861173bd4f..e7e520d90f0 100644 --- a/arch/ia64/kernel/traps.c +++ b/arch/ia64/kernel/traps.c @@ -21,12 +21,26 @@ #include <asm/intrinsics.h> #include <asm/processor.h> #include <asm/uaccess.h> +#include <asm/kdebug.h> extern spinlock_t timerlist_lock; fpswa_interface_t *fpswa_interface; EXPORT_SYMBOL(fpswa_interface); +struct notifier_block *ia64die_chain; +static DEFINE_SPINLOCK(die_notifier_lock); + +int register_die_notifier(struct notifier_block *nb) +{ + int err = 0; + unsigned long flags; + spin_lock_irqsave(&die_notifier_lock, flags); + err = notifier_chain_register(&ia64die_chain, nb); + spin_unlock_irqrestore(&die_notifier_lock, flags); + return err; +} + void __init trap_init (void) { @@ -137,6 +151,10 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs) switch (break_num) { case 0: /* unknown error (used by GCC for __builtin_abort()) */ + if (notify_die(DIE_BREAK, "break 0", regs, break_num, TRAP_BRKPT, SIGTRAP) + == NOTIFY_STOP) { + return; + } die_if_kernel("bugcheck!", regs, break_num); sig = SIGILL; code = ILL_ILLOPC; break; @@ -189,6 +207,15 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs) sig = SIGILL; code = __ILL_BNDMOD; break; + case 0x80200: + case 0x80300: + if (notify_die(DIE_BREAK, "kprobe", regs, break_num, TRAP_BRKPT, SIGTRAP) + == NOTIFY_STOP) { + return; + } + sig = SIGTRAP; code = TRAP_BRKPT; + break; + default: if (break_num < 0x40000 || break_num > 0x100000) die_if_kernel("Bad break", regs, break_num); @@ -548,7 +575,11 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa, #endif break; case 35: siginfo.si_code = TRAP_BRANCH; ifa = 0; break; - case 36: siginfo.si_code = TRAP_TRACE; ifa = 0; break; + case 36: + if (notify_die(DIE_SS, "ss", ®s, vector, + vector, SIGTRAP) == NOTIFY_STOP) + return; + siginfo.si_code = TRAP_TRACE; ifa = 0; break; } siginfo.si_signo = SIGTRAP; siginfo.si_errno = 0; diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c index 4174ec999dd..ff62551eb3a 100644 --- a/arch/ia64/mm/fault.c +++ b/arch/ia64/mm/fault.c @@ -14,6 +14,7 @@ #include <asm/processor.h> #include <asm/system.h> #include <asm/uaccess.h> +#include <asm/kdebug.h> extern void die (char *, struct pt_regs *, long); @@ -102,6 +103,13 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re goto bad_area_no_up; #endif + /* + * This is to handle the kprobes on user space access instructions + */ + if (notify_die(DIE_PAGE_FAULT, "page fault", regs, code, TRAP_BRKPT, + SIGSEGV) == NOTIFY_STOP) + return; + down_read(&mm->mmap_sem); vma = find_vma_prev(mm, address, &prev_vma); |