Date: Mon, 9 Jul 2012 12:12:25 +0400 From: Gleb Smirnoff <glebius@FreeBSD.org> To: Przemyslaw Frasunek <venglin@freebsd.lublin.pl> Cc: freebsd-net@FreeBSD.org, Mike Tancsa <mike@sentex.net>, Ryan Stone <rysto32@gmail.com>, Eugene Grosbein <egrosbein@rdtc.ru>, bzeeb-lists@lists.zabbadoz.net Subject: Re: mpd5/Netgraph issues after upgrading to 7.4 Message-ID: <20120709081225.GJ21957@glebius.int.ru> In-Reply-To: <4FF7F2C6.5070401@freebsd.lublin.pl> References: <20110513162311.GK95084@glebius.int.ru> <4DD298AD.2060905@frasunek.com> <20110517184613.GN74366@glebius.int.ru> <4FDB1D71.6050908@freebsd.lublin.pl> <20120615203142.GW28613@glebius.int.ru> <4FDBAFD7.9020606@freebsd.lublin.pl> <4FDF2F81.6030307@sentex.net> <4FDF3097.6080701@freebsd.lublin.pl> <4FE0EE62.5070905@freebsd.lublin.pl> <4FF7F2C6.5070401@freebsd.lublin.pl>
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On Sat, Jul 07, 2012 at 10:26:46AM +0200, Przemyslaw Frasunek wrote: P> > After reenabling IPv6, the crash occurred within 6 hours. This time, crashdump P> > was properly saved (thanks to patch suggested by Eugene). P> P> My PPPoE BRAS was stable for 17 days. This morning, it crashed in another way: P> P> current process = 2762 (mpd5) P> trap number = 9 P> panic: general protection fault P> cpuid = 5 P> KDB: stack backtrace: P> #0 0xffffffff803a04a6 at kdb_backtrace+0x66 P> #1 0xffffffff8036dfde at panic+0x1ce P> #2 0xffffffff80503300 at trap_fatal+0x290 P> #3 0xffffffff80503851 at trap+0x111 P> #4 0xffffffff804ea5d4 at calltrap+0x8 P> #5 0xffffffff8041d314 at lltable_prefix_free+0x74 P> #6 0xffffffff8044c014 at in_ifscrub+0x2c4 P> #7 0xffffffff8044d3f3 at in_control+0x793 P> #8 0xffffffff80418d2d at ifioctl+0xccd P> #9 0xffffffff803b6842 at kern_ioctl+0x92 P> #10 0xffffffff803b6aa0 at ioctl+0xf0 P> #11 0xffffffff80502ab2 at amd64_syscall+0x302 P> #12 0xffffffff804ea8cc at Xfast_syscall+0xfc P> Uptime: 17d7h18m38s This looks very much related to a known race in ARP code. See this email and related thread: http://lists.freebsd.org/pipermail/freebsd-net/2012-March/031865.html Ryan didn't check in any patches since, and I failed to follow on this problem due to ENOTIME. I've added Ryan to Cc. Ryan, what's the status of the problem at your side? Did you come to any solution? -- Totus tuus, Glebius.
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