Date: Wed, 21 Jun 2006 15:35:38 +0400 (MSD) From: Maxim Konovalov <maxim@macomnet.ru> To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> Cc: Max Laier <max@love2party.net>, Gleb Smirnoff <glebius@FreeBSD.org>, cvs-all@FreeBSD.org, src-committers@FreeBSD.org, cvs-src@FreeBSD.org Subject: Re: cvs commit: src/sys/net if.c Message-ID: <20060621153300.K51644@mp2.macomnet.net> In-Reply-To: <20060621100956.I60374@maildrop.int.zabbadoz.net> References: <200606210602.k5L62Zor029243@repoman.freebsd.org> <20060621120212.D93005@mp2.macomnet.net> <200606211113.31621.max@love2party.net> <20060621100956.I60374@maildrop.int.zabbadoz.net>
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On Wed, 21 Jun 2006, 10:16-0000, Bjoern A. Zeeb wrote: > On Wed, 21 Jun 2006, Max Laier wrote: > > > On Wednesday 21 June 2006 10:06, Maxim Konovalov wrote: > > > On Wed, 21 Jun 2006, 06:02-0000, Gleb Smirnoff wrote: > > > > glebius 2006-06-21 06:02:35 UTC > > > > > > > > FreeBSD src repository > > > > > > > > Modified files: > > > > sys/net if.c > > > > Log: > > > > - First initialize ifnet, and then insert it into global > > > > list. > > > > - First remove from global list, then start destroying. > > > > > > > > PR: kern/97679 > > > > Submitted by: Alex Lyashkov <shadow itt.net.ru> > > > > Reviewed by: rwatson, brooks > > > > > > FWIW, even with Yar's recent commit to if_vlan.c it still panics. I > > > told Alex about that. A testcase below. Run it for several minutes. > > > > Yes, we simply keep too many implicit references to ifnets. The real > > sequence > > for interface destruction should be: > > I had been looking at that code somewhen last year I think > trying to clean up some ordering along the af/domain logic and > my conclusion was that in netinet6/* some bad things are done > that by that time prevented me from further working on this > to get it anywhere w/o a panic. Welcome to the club ;) Actually, it panics without INET6 in kernel too: db> bt Tracing pid 71448 tid 100106 td 0xc3a19960 vlan_ioctl(c2de1c00,c0286938,c3d9f900) at vlan_ioctl+0x112 ifhwioctl(c0286938,c2de1c00,c3d9f900,c3a19960) at ifhwioctl+0xa30 ifioctl(c281b14c,c0286938,c3d9f900,c3a19960,0,...) at ifioctl+0xab soo_ioctl(c2784510,c0286938,c3d9f900,c28b0200,c3a19960) at soo_ioctl+0x2db ioctl(c3a19960,d57b0d04) at ioctl+0x370 syscall(3b,3b,3b,bfbfe2d8,3,...) at syscall+0x27e Xint0x80_syscall() at Xint0x80_syscall+0x1f -- Maxim Konovalov
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