Date: Fri, 14 Feb 2003 23:02:11 -0800 From: Arun Sharma <arun@sharma-home.net> To: smp@freebsd.org Subject: Re: SMP vulnerable to panics early on ? Message-ID: <20030215070211.GA24479@sharma-home.net> In-Reply-To: <20030214060808.GA15893@sharma-home.net> References: <20030214060808.GA15893@sharma-home.net>
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On Thu, Feb 13, 2003 at 10:08:08PM -0800, Arun Sharma wrote: > It sounds like the time when FreeBSD first comes up and execs "sh" is the > most vulnerable time for panics. Here's my latest one. I was using the > experimental SCHED_ULE option. > > If my SMP kernel boots up ok, it normally is pretty solid. But right now, I > have a roughly 50% failure rate at boot up. Here's another one. -Arun panic: lockmgr: locking against myself cpuid = 1; lapic.id = 01000000 db> tr Debugger(c0364696,1000000,c03633a2,cad35f14,1) at Debugger+0x55 panic(c03633a2,0,0,0,b) at panic+0x11f lockmgr(c03c033c,2,0,c0d18a80,b8) at lockmgr+0x531 _vm_map_lock_read(c03c0300,0,0,200024c,0) at _vm_map_lock_read+0x5a vm_map_lookup(cad36074,0,2,cad36078,cad36068) at vm_map_lookup+0x38 vm_fault(1,0,2,8,c03c033c) at vm_fault+0xc4 _mtx_lock_spin(c038b6c0,0,0,0,0) at _mtx_lock_spin+0x6e msleep(c03c033c,c03d0c38,44,c0371b53,0) at msleep+0xf4 acquire(cad361bc,1000000,600,cad361a0,c0d17b10) at acquire+0xa0 lockmgr(c03c033c,2,0,c0d18a80,61) at lockmgr+0x3e4 _vm_map_lock_read(c03c0300,0,0,1000101,cad764ec) at _vm_map_lock_read+0x5a vm_map_lookup(cad362e4,cad764ec,1,cad362e8,cad362d8) at vm_map_lookup+0x38 vm_fault(c03c0300,cad764ec,0,0,0) at vm_fault+0xc4 _end() at 0xcad764ec db> show pcpu cpuid = 1 curthread = 0xc0d18a80: pid 11 "idle: cpu1" curpcb = 0xcad36da0 fpcurthread = none idlethread = 0xc0d18a80: pid 11 "idle: cpu1" currentldt = 0x28 db> show pcpu 0 cpuid = 0 curthread = 0xc0d18a80: pid 11 "idle: cpu1" curpcb = 0xcad36da0 fpcurthread = none idlethread = 0xc0d18b60: pid 12 "idle: cpu0" currentldt = 0x28 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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