Date: Sun, 30 Jan 2011 22:13:36 +0300 From: Chagin Dmitry <dchagin@freebsd.org> To: Alexander Best <arundel@freebsd.org> Cc: oleg.ginzburg@nevosoft.ru, freebsd-emulation@freebsd.org Subject: Re: kern/145024: [linux] kernel crash by linux.ko module with nooptions COMPAT_FREEBSD32 Message-ID: <20110130191336.GA34554@dchagin.static.corbina.ru> In-Reply-To: <20110130185924.GA19604@freebsd.org> References: <201101301827.p0UIRrnk089915@freefall.freebsd.org> <20110130184157.GA11074@dchagin.static.corbina.ru> <20110130185924.GA19604@freebsd.org>
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[-- Attachment #1 --] On Sun, Jan 30, 2011 at 06:59:24PM +0000, Alexander Best wrote: > On Sun Jan 30 11, Chagin Dmitry wrote: > > On Sun, Jan 30, 2011 at 06:27:53PM +0000, arundel@freebsd.org wrote: > > > Old Synopsis: [linux] [panic] kernel crash by linux.ko module with nooptions COMPAT_FREEBSD32 > > > New Synopsis: [linux] kernel crash by linux.ko module with nooptions COMPAT_FREEBSD32 > > > > > > State-Changed-From-To: open->analyzed > > > State-Changed-By: arundel > > > State-Changed-When: Sun Jan 30 18:13:13 UTC 2011 > > > State-Changed-Why: > > > We have two possibilities in order to fix this issue: > > > > > > 1) Add something like the following somewhere in sys/amd/linux32: > > > > > > #ifndef COMPAT_FREEBSD32 > > > #error "linux emulation requires COMPAT_FREEBSD32 \ > > > option for non 32 bit architectures" > > > #endif > > > > > > 2) Find a way to avoid the freebsd32_exec_copyin_args() call in > > > linux32_machdep.c. I believe this is the only place in the sys/amd/linux32 > > > code that depends on sys/amd64/ia32 code. > > > > > > NB: I've removed the panic tag from this PR. I was able to reproduce the issue, > > > however a panic didn't occur. The problem is that > > > freebsd32_exec_copyin_args() wasn't compiled into the kernel and loading the > > > linux kernel module thus fails. > > > > > > > hi, close report, see r205014. > > i verified the issue with a recent HEAD just a few minutes ago. the point is > that users should be informed, when they build the linuxulator on 64 bit > architectures without the COMPAT_FREEBSD32, because that will give them a > broken linuxulator. either that or remove the freebsd32_exec_copyin_args() call > from the linuxulator to make it independent from COMPAT_FREEBSD32 code. > ah, i see.. module Makefile. so, we should sync kernel and module build options. -- Have fun! chd [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.10 (FreeBSD) iEYEARECAAYFAk1FuGAACgkQ0t2Tb3OO/O0nYwCg0VRrdwfASLl6sgQZm2x8QIGd kLkAoKiz0Os/fqs+Mz/CJ+A3bWHhRmxo =Ans7 -----END PGP SIGNATURE-----
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