Date: Fri, 30 Nov 2012 04:42:45 -0800 (PST) From: sig6247 <sig6247@gmail.com> To: Konstantin Belousov <kostikbel@gmail.com> Cc: freebsd-current@freebsd.org, Bruce Evans <brde@optusnet.com.au>, fs@freebsd.org Subject: Re: clang compiled kernel panic when mounting zfs root on i386 Message-ID: <50b8a9c5.e64dec0a.1d88.133a@mx.google.com> In-Reply-To: <20121129232944.GQ3013@kib.kiev.ua> (Konstantin Belousov's message of "Fri, 30 Nov 2012 01:29:44 %2B0200") References: <50b37d46.8584440a.735c.ffffb4e6@mx.google.com> <20121126171658.GD3013@kib.kiev.ua> <20121127071243.D1255@besplex.bde.org> <20121129232944.GQ3013@kib.kiev.ua>
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On Fri, 30 Nov 2012 01:29:44 +0200, Konstantin Belousov <kostikbel@gmail.com> wrote: > Please apply the patch below and obtain the backtrace of the double fault > panic again. I will commit the patch later. Thanks for the patch. WARNING: WITNESS option enabled, expect reduced performance. Trying to mount root from zfs:zroot []... Fatal double fault: eip = 0xc0e93e07 esp = 0xc86bffbc ebp = 0xc86c0032 cpuid = 1; apic id = 01 panic: double fault cpuid = 1 KDB: enter: panic [ thread pid 1 tid 100002 ] Stopped at kdb_enter+0x3d: movl $0,kdb_why db> bt Tracing pid 1 tid 100002 td 0xc89efbc0 kdb_enter(c1065960,c1065960,c10b903b,c139f438,aef01785,...) at kdb_enter+0x3d/frame 0xc139f3f0 panic(c10b903b,1,1,1,c86c0032,...) at panic+0x14b/frame 0xc139f42c dblfault_handler() at dblfault_handler+0xab/frame 0xc139f42c --- trap 0x17, eip = 0xc0e93e07, esp = 0xc86bffbc, ebp = 0xc86c0032 --- __qdivrem(0,aba80000,c10d,98600000,68c119,...) at __qdivrem+0x197/frame 0xc86c0032 db>
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