Date: Thu, 10 Jun 2004 20:34:10 +1000 (EST) From: Andy Farkas <andyf@speednet.com.au> To: Bruce Evans <bde@zeta.org.au> Cc: "'current@freebsd.org'" <current@freebsd.org> Subject: Re: kernel trap 19 with interrupts disabled Message-ID: <20040610202545.E9618@hewey.af.speednet.com.au> In-Reply-To: <20040610194112.S8078@gamplex.bde.org> References: <FE045D4D9F7AED4CBFF1B3B813C85337051D8F48@mail.sandvine.com> <20040610194112.S8078@gamplex.bde.org>
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Bruce Evans wrote: > Don Bowman wrote: > ... > > kernel trap 19 with interrupts disabled > > NMI ... going to debugger ... > > It means that the NMI was serviced by a CPU that has interrupts disabled > at the CPU level. The message for this is a little spurious because NMI > by definition is supposed to be able to occur when interrupts are masked, > but it can be useful to know when an unexpected or even an expected trap > occurs with interrupts disabled. Here it tells us that the interrupt > may really have needed to be non-maskable to break into some code that is > looping with interrupts disabled. My box did the following the other day (its a quad ppro-200 with ecc ram; dell 6100/200). I'd like to know if it is safe to continue running the kernel as is, or should it be rebooted? I pressed 'c' at the debugger prompt and nothing bad has happened so far. I've rebooted since. Jun 6 17:44:47 <kern.crit> hummer kernel: NMI ISA a8, EISA 0 Jun 6 17:44:47 <kern.crit> hummer kernel: RAM parity error, likely hardware failure. Jun 6 17:44:47 <kern.crit> hummer kernel: Jun 6 17:44:47 <kern.crit> hummer kernel: Fatal trap 19: non-maskable interrupt trap while in kernel mode Jun 6 17:44:47 <kern.crit> hummer kernel: cpuid = 0; apic id = 00 Jun 6 17:44:47 <kern.crit> hummer kernel: instruction pointer = 0x8:0xc049cd12 Jun 6 17:44:47 <kern.crit> hummer kernel: stack pointer = 0x10:0xd7d0ac70 Jun 6 17:44:47 <kern.crit> hummer kernel: frame pointer = 0x10:0xd7d0ac9c Jun 6 17:44:47 <kern.crit> hummer kernel: code segment = base 0x0, limit 0xfffff, type 0x1b Jun 6 17:44:47 <kern.crit> hummer kernel: = DPL 0, pres 1, def32 1, gran 1 Jun 6 17:44:47 <kern.crit> hummer kernel: processor eflags = interrupt enabled, resume, IOPL = 0 Jun 6 17:44:47 <kern.crit> hummer kernel: current process = 43 (irq14: ata0) Jun 6 17:44:48 <kern.crit> hummer kernel: kernel: type 19 trap, code=0 (yes, there is a blank "kernel:" line!) -- :{ andyf@speednet.com.au Andy Farkas System Administrator Speednet Communications http://www.speednet.com.au/
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