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authorJan Beulich <jbeulich@novell.com>2006-03-26 01:37:01 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:56:53 -0800
commit20c0d2d4402973050e7aad8a481ec6f847ee40d8 (patch)
treea3fc29f54187aa9d2dad25a018011443ca83d7ff /arch
parent841b8a46bffec232377d2de157f971e812be4fe4 (diff)
[PATCH] i386: pass proper trap numbers to die chain handlers
Pass the trap number causing the call to notify_die() to the die notification handler chain in a number of instances. Also, honor the return value from the handler chain invocation in die() as, through a debugger, the fault may have been fixed. Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-By: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/kernel/traps.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index de5386b01d3..4624f8ca245 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -386,8 +386,12 @@ void die(const char * str, struct pt_regs * regs, long err)
#endif
if (nl)
printk("\n");
- notify_die(DIE_OOPS, (char *)str, regs, err, 255, SIGSEGV);
- show_registers(regs);
+ if (notify_die(DIE_OOPS, str, regs, err,
+ current->thread.trap_no, SIGSEGV) !=
+ NOTIFY_STOP)
+ show_registers(regs);
+ else
+ regs = NULL;
} else
printk(KERN_EMERG "Recursive die() failure, output suppressed\n");
@@ -395,6 +399,9 @@ void die(const char * str, struct pt_regs * regs, long err)
die.lock_owner = -1;
spin_unlock_irqrestore(&die.lock, flags);
+ if (!regs)
+ return;
+
if (kexec_should_crash(current))
crash_kexec(regs);
@@ -623,7 +630,7 @@ static DEFINE_SPINLOCK(nmi_print_lock);
void die_nmi (struct pt_regs *regs, const char *msg)
{
- if (notify_die(DIE_NMIWATCHDOG, msg, regs, 0, 0, SIGINT) ==
+ if (notify_die(DIE_NMIWATCHDOG, msg, regs, 0, 2, SIGINT) ==
NOTIFY_STOP)
return;
@@ -662,7 +669,7 @@ static void default_do_nmi(struct pt_regs * regs)
reason = get_nmi_reason();
if (!(reason & 0xc0)) {
- if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 0, SIGINT)
+ if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 2, SIGINT)
== NOTIFY_STOP)
return;
#ifdef CONFIG_X86_LOCAL_APIC
@@ -678,7 +685,7 @@ static void default_do_nmi(struct pt_regs * regs)
unknown_nmi_error(reason, regs);
return;
}
- if (notify_die(DIE_NMI, "nmi", regs, reason, 0, SIGINT) == NOTIFY_STOP)
+ if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT) == NOTIFY_STOP)
return;
if (reason & 0x80)
mem_parity_error(reason, regs);