Date: Thu, 20 Nov 2008 06:47:11 +0100 From: Ruben de Groot <mail25@bzerk.org> To: Marius Strobl <marius@alchemy.franken.de> Cc: Ruben de Groot <mail25@bzerk.org>, sparc64@freebsd.org Subject: Re: Panic in 7.1-PRERELEASE (was: Re: kgdb on sparc64) Message-ID: <20081120054711.GA11035@ei.bzerk.org> In-Reply-To: <20081119220317.GP64456@alchemy.franken.de> References: <20081103120215.GA32257@ei.bzerk.org> <20081103221111.GA8256@alchemy.franken.de> <20081105195630.GA52831@ei.bzerk.org> <20081109183232.GC76319@alchemy.franken.de> <20081119080344.GA96293@ei.bzerk.org> <20081119220317.GP64456@alchemy.franken.de>
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On Wed, Nov 19, 2008 at 11:03:17PM +0100, Marius Strobl typed: > On Wed, Nov 19, 2008 at 09:03:44AM +0100, Ruben de Groot wrote: > > > > FreeBSD nostalgia4infinity.bzerk.org 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #5: Mon Nov 10 21:25:55 CET 2008 root@nostalgia4infinity.bzerk.org:/usr/obj/usr/src/sys/N4I sparc64 > > > > panic: trap: data access error > > cpuid = 0 > > KDB: stack backtrace: > > panic() at panic+0x1c8 > > trap() at trap+0x4d0 > > -- data access error %o7=0xc00bac60 -- > > dc_mii_writebit() at dc_mii_writebit+0xd8 > > dc_miibus_writereg() at dc_miibus_writereg+0x2a0 > > miibus_writereg() at miibus_writereg+0x64 > > mii_phy_reset() at mii_phy_reset+0x7c > > mii_phy_tick() at mii_phy_tick+0x154 > > amphy_service() at amphy_service+0x164 > > mii_tick() at mii_tick+0x1c > > dc_tick() at dc_tick+0x1ec > > softclock() at softclock+0x3c4 > > ithread_loop() at ithread_loop+0x21c > > fork_exit() at fork_exit+0x88 > > fork_trampoline() at fork_trampoline+0x8 > > Uptime: 4d22h16m5s > > Dumping 1024 MB (4 chunks) > > chunk at 0: 268435456 bytes ... ok > > chunk at 0x20000000: 268435456 bytes ... ok > > chunk at 0x40000000: 268435456 bytes ... ok > > chunk at 0x60000000: 268435456 bytes ... ok > > > > Could you please run gdb on the corresponding kernel.debug > and report the output of the following commands? > l*(0xc00bac60) > l*(dc_mii_writebit+0xd8) (gdb) l*(0xc00bac60) 0xc00bac60 is in dc_mii_send (/usr/src/sys/dev/dc/if_dc.c:661). 656 dc_mii_send(struct dc_softc *sc, u_int32_t bits, int cnt) 657 { 658 int i; 659 660 for (i = (0x1 << (cnt - 1)); i; i >>= 1) 661 dc_mii_writebit(sc, bits & i); 662 } 663 664 /* 665 * Read an PHY register through the MII. (gdb) l*(dc_mii_writebit+0xd8) 0xc00baaf8 is in dc_mii_writebit (cpufunc.h:129). 124 : : "r" (val), "r" (va), "r" (asi)); \ 125 } 126 127 STNC_GEN(u_char, stba); 128 STNC_GEN(u_short, stha); 129 STNC_GEN(u_int, stwa); 130 STNC_GEN(u_long, stxa); 131 132 #define ST_GENERIC(va, asi, val, op) \ 133 __asm __volatile(#op " %0, [%1] %2" \ > If you need a quick workaround I think that locally reverting > src/sys/dev/dc/if_dc.c r182461/1.192.2.5 will get you rid of > this problem, this will also make dc(4) again no longer check > the link state of this interface once it's up though, so this > is no real solution. Thanks. I've moved all websites away from this machine, so it's available for any further tests to help find a solution. Ruben
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