diff options
| author | Andi Kleen <ak@suse.de> | 2006-09-26 10:52:27 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:27 +0200 |
| commit | fac58550e80c307bf17cfa0dd544fca4eff120a5 (patch) | |
| tree | 04eb287f3dd1bb2d7e9887e4d25073ca9794fa27 | |
| parent | 4038f901cf102a40715b900984ed7540a9fa637f (diff) | |
| download | linux-fac58550e80c307bf17cfa0dd544fca4eff120a5.tar.bz2 | |
[PATCH] Fix up panic messages for different NMI panics
When a unknown NMI happened the panic would claim a NMI watchdog timeout.
Also it would check the variable set by nmi_watchdog=panic and panic then.
Fix up the panic message to be generic
Unconditionally panic on unknown NMI when panic on unknown nmi is enabled.
Noticed by Jan Beulich
Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
| -rw-r--r-- | arch/x86_64/kernel/nmi.c | 5 | ||||
| -rw-r--r-- | arch/x86_64/kernel/traps.c | 7 | ||||
| -rw-r--r-- | include/asm-x86_64/nmi.h | 2 |
3 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86_64/kernel/nmi.c b/arch/x86_64/kernel/nmi.c index 5a35975e5763..1b76d1574529 100644 --- a/arch/x86_64/kernel/nmi.c +++ b/arch/x86_64/kernel/nmi.c @@ -695,7 +695,8 @@ int __kprobes nmi_watchdog_tick(struct pt_regs * regs, unsigned reason) */ local_inc(&__get_cpu_var(alert_counter)); if (local_read(&__get_cpu_var(alert_counter)) == 5*nmi_hz) - die_nmi("NMI Watchdog detected LOCKUP on CPU %d\n", regs); + die_nmi("NMI Watchdog detected LOCKUP on CPU %d\n", regs, + panic_on_timeout); } else { __get_cpu_var(last_irq_sum) = sum; local_set(&__get_cpu_var(alert_counter), 0); @@ -765,7 +766,7 @@ static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu) char buf[64]; sprintf(buf, "NMI received for unknown reason %02x\n", reason); - die_nmi(buf,regs); + die_nmi(buf, regs, 1); /* Always panic here */ return 0; } diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c index dae10df60926..96f62a033242 100644 --- a/arch/x86_64/kernel/traps.c +++ b/arch/x86_64/kernel/traps.c @@ -570,7 +570,7 @@ void die(const char * str, struct pt_regs * regs, long err) do_exit(SIGSEGV); } -void __kprobes die_nmi(char *str, struct pt_regs *regs) +void __kprobes die_nmi(char *str, struct pt_regs *regs, int do_panic) { unsigned long flags = oops_begin(); @@ -582,9 +582,8 @@ void __kprobes die_nmi(char *str, struct pt_regs *regs) show_registers(regs); if (kexec_should_crash(current)) crash_kexec(regs); - if (panic_on_timeout || panic_on_oops) - panic("nmi watchdog"); - printk("console shuts up ...\n"); + if (do_panic || panic_on_oops) + panic("Non maskable interrupt"); oops_end(flags); nmi_exit(); local_irq_enable(); diff --git a/include/asm-x86_64/nmi.h b/include/asm-x86_64/nmi.h index 578596494275..cbf2669bca71 100644 --- a/include/asm-x86_64/nmi.h +++ b/include/asm-x86_64/nmi.h @@ -37,7 +37,7 @@ static inline void unset_nmi_pm_callback(struct pm_dev * dev) #endif /* CONFIG_PM */ extern void default_do_nmi(struct pt_regs *); -extern void die_nmi(char *str, struct pt_regs *regs); +extern void die_nmi(char *str, struct pt_regs *regs, int do_panic); #define get_nmi_reason() inb(0x61) |