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authorJason Wessel <jason.wessel@windriver.com>2008-03-07 16:34:16 -0600
committerIngo Molnar <mingo@elte.hu>2008-04-17 20:05:40 +0200
commit737a460f21febe551ff1d2299b63bae9b154078f (patch)
tree7a2d9440222c22446e283f6fbc959b4a44270989 /arch/x86/kernel/traps_64.c
parent84b5ae15216aa3ea0314f395536ef9829af21e14 (diff)
kgdb: fix several kgdb regressions
kgdb core fixes: - Check to see that mm->mmap_cache is not null before calling flush_cache_range(), else on arch=ARM it will cause a fatal fault. - Breakpoints should only be restored if they are in the BP_ACTIVE state. - Fix a typo in comments to "kgdb_register_io_module" x86 kgdb fixes: - Fix the x86 arch handler such that on a kill or detach that the appropriate cleanup on the single stepping flags gets run. - Add in the DIE_NMIWATCHDOG call for x86_64 - Touch the nmi watchdog before returning the system to normal operation after performing any kind of kgdb operation, else the possibility exists to trigger the watchdog. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/traps_64.c')
-rw-r--r--arch/x86/kernel/traps_64.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c
index 055b1650c69..4e073320e70 100644
--- a/arch/x86/kernel/traps_64.c
+++ b/arch/x86/kernel/traps_64.c
@@ -600,8 +600,13 @@ void die(const char * str, struct pt_regs * regs, long err)
void __kprobes die_nmi(char *str, struct pt_regs *regs, int do_panic)
{
- unsigned long flags = oops_begin();
+ unsigned long flags;
+
+ if (notify_die(DIE_NMIWATCHDOG, str, regs, 0, 2, SIGINT) ==
+ NOTIFY_STOP)
+ return;
+ flags = oops_begin();
/*
* We are in trouble anyway, lets at least try
* to get a message out.