diff options
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce_64.c | 8 | ||||
| -rw-r--r-- | arch/x86/kernel/traps_64.c | 23 | ||||
| -rw-r--r-- | arch/x86/mm/fault_64.c | 12 | ||||
| -rw-r--r-- | include/asm-x86/kdebug.h | 4 |
4 files changed, 27 insertions, 20 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c index 8cd47fe2ef2c..bc6e35153d83 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_64.c +++ b/arch/x86/kernel/cpu/mcheck/mce_64.c @@ -192,10 +192,10 @@ void do_machine_check(struct pt_regs * regs, long error_code) atomic_inc(&mce_entry); - if (regs) - notify_die(DIE_NMI, "machine check", regs, error_code, 18, - SIGKILL); - if (!banks) + if ((regs + && notify_die(DIE_NMI, "machine check", regs, error_code, + 18, SIGKILL) == NOTIFY_STOP) + || !banks) goto out2; memset(&m, 0, sizeof(struct mce)); diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c index 1a12a81fdb1b..cf90ceb48f5f 100644 --- a/arch/x86/kernel/traps_64.c +++ b/arch/x86/kernel/traps_64.c @@ -488,7 +488,7 @@ unsigned __kprobes long oops_begin(void) return flags; } -void __kprobes oops_end(unsigned long flags) +void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr) { die_owner = -1; bust_spinlocks(0); @@ -497,12 +497,17 @@ void __kprobes oops_end(unsigned long flags) /* Nest count reaches zero, release the lock. */ __raw_spin_unlock(&die_lock); raw_local_irq_restore(flags); + if (!regs) { + oops_exit(); + return; + } if (panic_on_oops) panic("Fatal exception"); oops_exit(); + do_exit(signr); } -void __kprobes __die(const char * str, struct pt_regs * regs, long err) +int __kprobes __die(const char * str, struct pt_regs * regs, long err) { static int die_counter; printk(KERN_EMERG "%s: %04lx [%u] ", str, err & 0xffff,++die_counter); @@ -516,7 +521,8 @@ void __kprobes __die(const char * str, struct pt_regs * regs, long err) printk("DEBUG_PAGEALLOC"); #endif printk("\n"); - notify_die(DIE_OOPS, str, regs, err, current->thread.trap_no, SIGSEGV); + if (notify_die(DIE_OOPS, str, regs, err, current->thread.trap_no, SIGSEGV) == NOTIFY_STOP) + return 1; show_registers(regs); add_taint(TAINT_DIE); /* Executive summary in case the oops scrolled away */ @@ -525,6 +531,7 @@ void __kprobes __die(const char * str, struct pt_regs * regs, long err) printk(" RSP <%016lx>\n", regs->sp); if (kexec_should_crash(current)) crash_kexec(regs); + return 0; } void die(const char * str, struct pt_regs * regs, long err) @@ -534,9 +541,9 @@ void die(const char * str, struct pt_regs * regs, long err) if (!user_mode(regs)) report_bug(regs->ip, regs); - __die(str, regs, err); - oops_end(flags); - do_exit(SIGSEGV); + if (__die(str, regs, err)) + regs = NULL; + oops_end(flags, regs, SIGSEGV); } void __kprobes die_nmi(char *str, struct pt_regs *regs, int do_panic) @@ -553,10 +560,10 @@ void __kprobes die_nmi(char *str, struct pt_regs *regs, int do_panic) crash_kexec(regs); if (do_panic || panic_on_oops) panic("Non maskable interrupt"); - oops_end(flags); + oops_end(flags, NULL, SIGBUS); nmi_exit(); local_irq_enable(); - do_exit(SIGSEGV); + do_exit(SIGBUS); } static void __kprobes do_trap(int trapnr, int signr, char *str, diff --git a/arch/x86/mm/fault_64.c b/arch/x86/mm/fault_64.c index 162050d4e5a3..121c7bda6297 100644 --- a/arch/x86/mm/fault_64.c +++ b/arch/x86/mm/fault_64.c @@ -227,9 +227,9 @@ static noinline void pgtable_bad(unsigned long address, struct pt_regs *regs, tsk->thread.cr2 = address; tsk->thread.trap_no = 14; tsk->thread.error_code = error_code; - __die("Bad pagetable", regs, error_code); - oops_end(flags); - do_exit(SIGKILL); + if (__die("Bad pagetable", regs, error_code)) + regs = NULL; + oops_end(flags, regs, SIGKILL); } /* @@ -541,11 +541,11 @@ no_context: tsk->thread.cr2 = address; tsk->thread.trap_no = 14; tsk->thread.error_code = error_code; - __die("Oops", regs, error_code); + if (__die("Oops", regs, error_code)) + regs = NULL; /* Executive summary in case the body of the oops scrolled away */ printk(KERN_EMERG "CR2: %016lx\n", address); - oops_end(flags); - do_exit(SIGKILL); + oops_end(flags, regs, SIGKILL); /* * We ran out of memory, or some other thing happened to us that made diff --git a/include/asm-x86/kdebug.h b/include/asm-x86/kdebug.h index 49e5c91d490c..a5e5e3b7eb23 100644 --- a/include/asm-x86/kdebug.h +++ b/include/asm-x86/kdebug.h @@ -25,7 +25,7 @@ enum die_val { extern void early_printk(const char *fmt, ...) __attribute__((format(printf,1,2))); extern void printk_address(unsigned long address); extern void die(const char *,struct pt_regs *,long); -extern void __die(const char *,struct pt_regs *,long); +extern int __must_check __die(const char *, struct pt_regs *, long); extern void show_registers(struct pt_regs *regs); extern void __show_registers(struct pt_regs *, int all); extern void show_trace(struct task_struct *, struct pt_regs *, unsigned long *); @@ -33,6 +33,6 @@ extern void __show_regs(struct pt_regs *regs); extern void show_regs(struct pt_regs *regs); extern void dump_pagetable(unsigned long); extern unsigned long oops_begin(void); -extern void oops_end(unsigned long); +extern void oops_end(unsigned long, struct pt_regs *, int signr); #endif |